/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 10:56:04,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 10:56:04,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 10:56:04,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 10:56:04,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 10:56:04,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 10:56:04,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 10:56:04,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 10:56:04,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 10:56:04,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 10:56:04,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 10:56:04,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 10:56:04,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 10:56:04,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 10:56:04,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 10:56:04,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 10:56:04,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 10:56:04,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 10:56:04,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 10:56:04,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 10:56:04,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 10:56:04,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 10:56:04,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 10:56:04,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 10:56:04,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 10:56:04,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 10:56:04,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 10:56:04,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 10:56:04,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 10:56:04,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 10:56:04,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 10:56:04,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 10:56:04,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 10:56:04,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 10:56:04,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 10:56:04,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 10:56:04,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 10:56:04,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 10:56:04,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 10:56:04,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 10:56:04,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 10:56:04,327 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 10:56:04,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 10:56:04,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 10:56:04,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 10:56:04,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 10:56:04,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 10:56:04,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 10:56:04,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 10:56:04,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 10:56:04,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 10:56:04,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 10:56:04,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 10:56:04,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 10:56:04,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 10:56:04,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 10:56:04,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 10:56:04,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 10:56:04,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 10:56:04,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 10:56:04,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 10:56:04,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 10:56:04,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 10:56:04,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 10:56:04,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 10:56:04,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 10:56:04,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 10:56:04,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 10:56:04,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 10:56:04,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 10:56:04,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 10:56:04,637 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 10:56:04,638 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-16 10:56:04,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2735765f7/73a42ae926fb46029af869f83a720f41/FLAGff83fd070 [2020-10-16 10:56:05,255 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 10:56:05,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-16 10:56:05,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2735765f7/73a42ae926fb46029af869f83a720f41/FLAGff83fd070 [2020-10-16 10:56:05,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2735765f7/73a42ae926fb46029af869f83a720f41 [2020-10-16 10:56:05,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 10:56:05,680 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 10:56:05,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 10:56:05,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 10:56:05,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 10:56:05,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:56:05" (1/1) ... [2020-10-16 10:56:05,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b5d11e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:05, skipping insertion in model container [2020-10-16 10:56:05,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:56:05" (1/1) ... [2020-10-16 10:56:05,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 10:56:05,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 10:56:06,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:56:06,264 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 10:56:06,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:56:06,426 INFO L208 MainTranslator]: Completed translation [2020-10-16 10:56:06,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06 WrapperNode [2020-10-16 10:56:06,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 10:56:06,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 10:56:06,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 10:56:06,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 10:56:06,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06" (1/1) ... [2020-10-16 10:56:06,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06" (1/1) ... [2020-10-16 10:56:06,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 10:56:06,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 10:56:06,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 10:56:06,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 10:56:06,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06" (1/1) ... [2020-10-16 10:56:06,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06" (1/1) ... [2020-10-16 10:56:06,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06" (1/1) ... [2020-10-16 10:56:06,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06" (1/1) ... [2020-10-16 10:56:06,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06" (1/1) ... [2020-10-16 10:56:06,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06" (1/1) ... [2020-10-16 10:56:06,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06" (1/1) ... [2020-10-16 10:56:06,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 10:56:06,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 10:56:06,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 10:56:06,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 10:56:06,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:56:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 10:56:06,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 10:56:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 10:56:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 10:56:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 10:56:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 10:56:06,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 10:56:06,586 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 10:56:06,913 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 10:56:06,913 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-16 10:56:06,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:56:06 BoogieIcfgContainer [2020-10-16 10:56:06,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 10:56:06,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 10:56:06,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 10:56:06,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 10:56:06,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 10:56:05" (1/3) ... [2020-10-16 10:56:06,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155d7e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:56:06, skipping insertion in model container [2020-10-16 10:56:06,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:56:06" (2/3) ... [2020-10-16 10:56:06,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@155d7e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:56:06, skipping insertion in model container [2020-10-16 10:56:06,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:56:06" (3/3) ... [2020-10-16 10:56:06,926 INFO L111 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-10-16 10:56:06,941 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 10:56:06,941 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 10:56:06,952 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 10:56:06,953 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 10:56:06,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:06,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:06,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:06,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:06,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:06,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:06,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:06,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:06,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:06,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:56:07,020 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 10:56:07,042 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 10:56:07,061 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 10:56:07,061 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 10:56:07,061 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 10:56:07,062 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 10:56:07,062 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 10:56:07,062 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 10:56:07,062 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 10:56:07,062 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 10:56:07,076 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 10:56:07,079 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions, 189 flow [2020-10-16 10:56:07,082 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 92 transitions, 189 flow [2020-10-16 10:56:07,084 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-10-16 10:56:07,133 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-10-16 10:56:07,134 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 10:56:07,141 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2020-10-16 10:56:07,146 INFO L117 LiptonReduction]: Number of co-enabled transitions 2992 [2020-10-16 10:56:08,328 INFO L132 LiptonReduction]: Checked pairs total: 7520 [2020-10-16 10:56:08,329 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 10:56:08,337 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 51 transitions, 107 flow [2020-10-16 10:56:08,362 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 291 states. [2020-10-16 10:56:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2020-10-16 10:56:08,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-16 10:56:08,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:08,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-16 10:56:08,372 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:08,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:08,378 INFO L82 PathProgramCache]: Analyzing trace with hash 12384667, now seen corresponding path program 1 times [2020-10-16 10:56:08,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:08,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600448127] [2020-10-16 10:56:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:08,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600448127] [2020-10-16 10:56:08,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:08,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:56:08,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893728738] [2020-10-16 10:56:08,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 10:56:08,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:08,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 10:56:08,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 10:56:08,577 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 2 states. [2020-10-16 10:56:08,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:08,610 INFO L93 Difference]: Finished difference Result 291 states and 750 transitions. [2020-10-16 10:56:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 10:56:08,612 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-16 10:56:08,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:08,630 INFO L225 Difference]: With dead ends: 291 [2020-10-16 10:56:08,630 INFO L226 Difference]: Without dead ends: 282 [2020-10-16 10:56:08,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 10:56:08,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-16 10:56:08,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-10-16 10:56:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-16 10:56:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 732 transitions. [2020-10-16 10:56:08,721 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 732 transitions. Word has length 4 [2020-10-16 10:56:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:08,722 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 732 transitions. [2020-10-16 10:56:08,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 10:56:08,722 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 732 transitions. [2020-10-16 10:56:08,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 10:56:08,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:08,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:08,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 10:56:08,725 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:08,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:08,725 INFO L82 PathProgramCache]: Analyzing trace with hash 27980612, now seen corresponding path program 1 times [2020-10-16 10:56:08,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:08,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047587089] [2020-10-16 10:56:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:08,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047587089] [2020-10-16 10:56:08,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:08,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:56:08,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434895095] [2020-10-16 10:56:08,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:08,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:08,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:08,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:08,863 INFO L87 Difference]: Start difference. First operand 282 states and 732 transitions. Second operand 3 states. [2020-10-16 10:56:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:08,916 INFO L93 Difference]: Finished difference Result 281 states and 714 transitions. [2020-10-16 10:56:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:08,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 10:56:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:08,921 INFO L225 Difference]: With dead ends: 281 [2020-10-16 10:56:08,922 INFO L226 Difference]: Without dead ends: 242 [2020-10-16 10:56:08,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:08,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-16 10:56:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 236. [2020-10-16 10:56:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-16 10:56:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 615 transitions. [2020-10-16 10:56:08,944 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 615 transitions. Word has length 9 [2020-10-16 10:56:08,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:08,944 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 615 transitions. [2020-10-16 10:56:08,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 615 transitions. [2020-10-16 10:56:08,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 10:56:08,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:08,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:08,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 10:56:08,946 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:08,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:08,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1037274544, now seen corresponding path program 1 times [2020-10-16 10:56:08,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:08,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19139701] [2020-10-16 10:56:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:08,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19139701] [2020-10-16 10:56:08,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:08,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:56:08,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565150195] [2020-10-16 10:56:08,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:08,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:08,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:08,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:08,990 INFO L87 Difference]: Start difference. First operand 236 states and 615 transitions. Second operand 3 states. [2020-10-16 10:56:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:09,013 INFO L93 Difference]: Finished difference Result 225 states and 582 transitions. [2020-10-16 10:56:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:09,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 10:56:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:09,015 INFO L225 Difference]: With dead ends: 225 [2020-10-16 10:56:09,016 INFO L226 Difference]: Without dead ends: 186 [2020-10-16 10:56:09,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-16 10:56:09,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-10-16 10:56:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-16 10:56:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 490 transitions. [2020-10-16 10:56:09,029 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 490 transitions. Word has length 9 [2020-10-16 10:56:09,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:09,030 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 490 transitions. [2020-10-16 10:56:09,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:09,030 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 490 transitions. [2020-10-16 10:56:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 10:56:09,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:09,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:09,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 10:56:09,033 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:09,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:09,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1540220195, now seen corresponding path program 1 times [2020-10-16 10:56:09,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:09,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786901070] [2020-10-16 10:56:09,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:09,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786901070] [2020-10-16 10:56:09,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:09,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:56:09,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088055374] [2020-10-16 10:56:09,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:09,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:09,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:09,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,106 INFO L87 Difference]: Start difference. First operand 186 states and 490 transitions. Second operand 3 states. [2020-10-16 10:56:09,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:09,140 INFO L93 Difference]: Finished difference Result 308 states and 768 transitions. [2020-10-16 10:56:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:09,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-16 10:56:09,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:09,144 INFO L225 Difference]: With dead ends: 308 [2020-10-16 10:56:09,144 INFO L226 Difference]: Without dead ends: 306 [2020-10-16 10:56:09,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-16 10:56:09,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 229. [2020-10-16 10:56:09,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-16 10:56:09,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 602 transitions. [2020-10-16 10:56:09,157 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 602 transitions. Word has length 15 [2020-10-16 10:56:09,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:09,157 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 602 transitions. [2020-10-16 10:56:09,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:09,158 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 602 transitions. [2020-10-16 10:56:09,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 10:56:09,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:09,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:09,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 10:56:09,161 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:09,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:09,161 INFO L82 PathProgramCache]: Analyzing trace with hash 988190489, now seen corresponding path program 1 times [2020-10-16 10:56:09,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:09,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673194095] [2020-10-16 10:56:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:09,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673194095] [2020-10-16 10:56:09,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:09,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:56:09,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662596493] [2020-10-16 10:56:09,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:09,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:09,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:09,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,197 INFO L87 Difference]: Start difference. First operand 229 states and 602 transitions. Second operand 3 states. [2020-10-16 10:56:09,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:09,248 INFO L93 Difference]: Finished difference Result 312 states and 770 transitions. [2020-10-16 10:56:09,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:09,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-16 10:56:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:09,251 INFO L225 Difference]: With dead ends: 312 [2020-10-16 10:56:09,251 INFO L226 Difference]: Without dead ends: 237 [2020-10-16 10:56:09,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-16 10:56:09,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 216. [2020-10-16 10:56:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 10:56:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 534 transitions. [2020-10-16 10:56:09,261 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 534 transitions. Word has length 15 [2020-10-16 10:56:09,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:09,261 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 534 transitions. [2020-10-16 10:56:09,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:09,261 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 534 transitions. [2020-10-16 10:56:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 10:56:09,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:09,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:09,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 10:56:09,263 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:09,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:09,264 INFO L82 PathProgramCache]: Analyzing trace with hash -795157281, now seen corresponding path program 2 times [2020-10-16 10:56:09,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:09,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38600036] [2020-10-16 10:56:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:09,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38600036] [2020-10-16 10:56:09,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:09,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:56:09,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084382507] [2020-10-16 10:56:09,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:09,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:09,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:09,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,298 INFO L87 Difference]: Start difference. First operand 216 states and 534 transitions. Second operand 3 states. [2020-10-16 10:56:09,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:09,317 INFO L93 Difference]: Finished difference Result 293 states and 674 transitions. [2020-10-16 10:56:09,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:09,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-16 10:56:09,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:09,320 INFO L225 Difference]: With dead ends: 293 [2020-10-16 10:56:09,320 INFO L226 Difference]: Without dead ends: 293 [2020-10-16 10:56:09,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-16 10:56:09,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 216. [2020-10-16 10:56:09,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 10:56:09,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 522 transitions. [2020-10-16 10:56:09,330 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 522 transitions. Word has length 15 [2020-10-16 10:56:09,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:09,331 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 522 transitions. [2020-10-16 10:56:09,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:09,331 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 522 transitions. [2020-10-16 10:56:09,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 10:56:09,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:09,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:09,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 10:56:09,333 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:09,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:09,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1884700835, now seen corresponding path program 2 times [2020-10-16 10:56:09,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:09,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055659222] [2020-10-16 10:56:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:09,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055659222] [2020-10-16 10:56:09,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:09,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:56:09,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762755418] [2020-10-16 10:56:09,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:09,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:09,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:09,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,370 INFO L87 Difference]: Start difference. First operand 216 states and 522 transitions. Second operand 3 states. [2020-10-16 10:56:09,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:09,408 INFO L93 Difference]: Finished difference Result 181 states and 375 transitions. [2020-10-16 10:56:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:09,408 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-16 10:56:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:09,410 INFO L225 Difference]: With dead ends: 181 [2020-10-16 10:56:09,410 INFO L226 Difference]: Without dead ends: 115 [2020-10-16 10:56:09,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-16 10:56:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-10-16 10:56:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 10:56:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 190 transitions. [2020-10-16 10:56:09,415 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 190 transitions. Word has length 15 [2020-10-16 10:56:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:09,416 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 190 transitions. [2020-10-16 10:56:09,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 190 transitions. [2020-10-16 10:56:09,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 10:56:09,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:09,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:09,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 10:56:09,417 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:09,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:09,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1567500834, now seen corresponding path program 1 times [2020-10-16 10:56:09,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:09,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522233435] [2020-10-16 10:56:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:09,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522233435] [2020-10-16 10:56:09,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:09,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:56:09,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706056096] [2020-10-16 10:56:09,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:09,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:09,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:09,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,446 INFO L87 Difference]: Start difference. First operand 96 states and 190 transitions. Second operand 3 states. [2020-10-16 10:56:09,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:09,456 INFO L93 Difference]: Finished difference Result 98 states and 191 transitions. [2020-10-16 10:56:09,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:09,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 10:56:09,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:09,458 INFO L225 Difference]: With dead ends: 98 [2020-10-16 10:56:09,458 INFO L226 Difference]: Without dead ends: 81 [2020-10-16 10:56:09,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-16 10:56:09,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-16 10:56:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-16 10:56:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 159 transitions. [2020-10-16 10:56:09,462 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 159 transitions. Word has length 17 [2020-10-16 10:56:09,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:09,462 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 159 transitions. [2020-10-16 10:56:09,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:09,462 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 159 transitions. [2020-10-16 10:56:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 10:56:09,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:56:09,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:56:09,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 10:56:09,464 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:56:09,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:56:09,464 INFO L82 PathProgramCache]: Analyzing trace with hash 322655978, now seen corresponding path program 1 times [2020-10-16 10:56:09,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:56:09,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213234504] [2020-10-16 10:56:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:56:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:56:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:56:09,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213234504] [2020-10-16 10:56:09,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:56:09,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:56:09,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283893043] [2020-10-16 10:56:09,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 10:56:09,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:56:09,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 10:56:09,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,492 INFO L87 Difference]: Start difference. First operand 81 states and 159 transitions. Second operand 3 states. [2020-10-16 10:56:09,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:56:09,497 INFO L93 Difference]: Finished difference Result 56 states and 119 transitions. [2020-10-16 10:56:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 10:56:09,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 10:56:09,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:56:09,498 INFO L225 Difference]: With dead ends: 56 [2020-10-16 10:56:09,498 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 10:56:09,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 10:56:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 10:56:09,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 10:56:09,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 10:56:09,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 10:56:09,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 10:56:09,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:56:09,500 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 10:56:09,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 10:56:09,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 10:56:09,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 10:56:09,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 10:56:09,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 10:56:09 BasicIcfg [2020-10-16 10:56:09,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 10:56:09,508 INFO L168 Benchmark]: Toolchain (without parser) took 3827.36 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 101.9 MB in the beginning and 127.6 MB in the end (delta: -25.7 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:09,508 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 10:56:09,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 747.81 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.7 MB in the beginning and 160.5 MB in the end (delta: -58.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:09,510 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.60 ms. Allocated memory is still 202.4 MB. Free memory was 160.5 MB in the beginning and 158.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:09,511 INFO L168 Benchmark]: Boogie Preprocessor took 29.72 ms. Allocated memory is still 202.4 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:09,512 INFO L168 Benchmark]: RCFGBuilder took 409.24 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 133.8 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:09,513 INFO L168 Benchmark]: TraceAbstraction took 2588.16 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 133.1 MB in the beginning and 127.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-10-16 10:56:09,517 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 747.81 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 101.7 MB in the beginning and 160.5 MB in the end (delta: -58.9 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.60 ms. Allocated memory is still 202.4 MB. Free memory was 160.5 MB in the beginning and 158.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.72 ms. Allocated memory is still 202.4 MB. Free memory was 158.6 MB in the beginning and 156.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.24 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 133.8 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2588.16 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 133.1 MB in the beginning and 127.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1508 VarBasedMoverChecksPositive, 102 VarBasedMoverChecksNegative, 41 SemBasedMoverChecksPositive, 61 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 395 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 72 PlacesBefore, 39 PlacesAfterwards, 92 TransitionsBefore, 51 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 4 FixpointIterations, 11 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 54 TotalNumberOfCompositions, 7520 MoverChecksTotal - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 724]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 474 SDtfs, 189 SDslu, 211 SDs, 0 SdLazy, 96 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 200 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 2461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...