/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:25:04,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:25:04,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:25:04,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:25:04,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:25:04,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:25:04,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:25:04,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:25:04,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:25:04,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:25:04,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:25:04,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:25:04,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:25:04,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:25:04,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:25:04,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:25:04,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:25:04,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:25:04,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:25:04,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:25:04,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:25:04,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:25:04,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:25:04,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:25:04,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:25:04,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:25:04,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:25:04,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:25:04,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:25:04,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:25:04,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:25:04,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:25:04,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:25:04,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:25:04,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:25:04,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:25:04,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:25:04,973 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:25:04,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:25:04,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:25:04,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:25:04,975 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:25:04,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:25:04,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:25:04,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:25:04,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:25:04,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:25:04,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:25:04,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:25:04,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:25:04,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:25:04,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:25:04,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:25:04,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:25:04,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:25:04,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:25:04,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:25:04,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:25:04,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:25:04,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:25:04,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:25:04,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:25:04,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:25:04,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:25:04,981 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:25:04,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:25:05,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:25:05,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:25:05,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:25:05,274 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:25:05,275 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:25:05,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-05 23:25:05,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f45f39c/9b2889906c5a425e8358d62ab249218d/FLAG558fc2193 [2020-10-05 23:25:05,897 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:25:05,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-05 23:25:05,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f45f39c/9b2889906c5a425e8358d62ab249218d/FLAG558fc2193 [2020-10-05 23:25:06,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f45f39c/9b2889906c5a425e8358d62ab249218d [2020-10-05 23:25:06,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:25:06,195 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:25:06,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:25:06,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:25:06,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:25:06,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:25:06" (1/1) ... [2020-10-05 23:25:06,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5588a755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06, skipping insertion in model container [2020-10-05 23:25:06,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:25:06" (1/1) ... [2020-10-05 23:25:06,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:25:06,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:25:06,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:25:06,717 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:25:06,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:25:06,871 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:25:06,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06 WrapperNode [2020-10-05 23:25:06,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:25:06,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:25:06,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:25:06,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:25:06,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06" (1/1) ... [2020-10-05 23:25:06,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06" (1/1) ... [2020-10-05 23:25:06,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:25:06,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:25:06,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:25:06,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:25:06,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06" (1/1) ... [2020-10-05 23:25:06,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06" (1/1) ... [2020-10-05 23:25:06,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06" (1/1) ... [2020-10-05 23:25:06,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06" (1/1) ... [2020-10-05 23:25:06,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06" (1/1) ... [2020-10-05 23:25:06,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06" (1/1) ... [2020-10-05 23:25:06,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06" (1/1) ... [2020-10-05 23:25:06,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:25:06,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:25:06,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:25:06,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:25:06,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06" (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 [2020-10-05 23:25:07,027 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-05 23:25:07,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-05 23:25:07,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:25:07,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:25:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:25:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:25:07,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:25:07,030 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:25:07,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:25:07,272 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-05 23:25:07,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:25:07 BoogieIcfgContainer [2020-10-05 23:25:07,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:25:07,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:25:07,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:25:07,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:25:07,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:25:06" (1/3) ... [2020-10-05 23:25:07,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242107b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:25:07, skipping insertion in model container [2020-10-05 23:25:07,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:25:06" (2/3) ... [2020-10-05 23:25:07,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242107b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:25:07, skipping insertion in model container [2020-10-05 23:25:07,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:25:07" (3/3) ... [2020-10-05 23:25:07,283 INFO L109 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2020-10-05 23:25:07,295 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:25:07,295 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:25:07,303 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:25:07,304 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:25:07,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:07,328 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:07,328 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:07,329 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:07,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:07,330 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:07,340 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:07,344 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:07,344 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:07,345 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:07,365 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-05 23:25:07,383 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:25:07,383 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:25:07,383 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:25:07,384 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:25:07,384 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:25:07,384 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:25:07,384 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:25:07,384 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:25:07,398 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 28 transitions, 61 flow [2020-10-05 23:25:07,400 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-10-05 23:25:07,434 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-10-05 23:25:07,434 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:25:07,439 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-10-05 23:25:07,441 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-10-05 23:25:07,453 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-10-05 23:25:07,454 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 23:25:07,455 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-10-05 23:25:07,456 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 180 [2020-10-05 23:25:07,457 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:25:08,007 INFO L206 etLargeBlockEncoding]: Checked pairs total: 114 [2020-10-05 23:25:08,008 INFO L214 etLargeBlockEncoding]: Total number of compositions: 22 [2020-10-05 23:25:08,011 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-10-05 23:25:08,022 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-10-05 23:25:08,025 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-05 23:25:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:25:08,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:08,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:25:08,035 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:25:08,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:08,042 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 1 times [2020-10-05 23:25:08,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:08,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427604121] [2020-10-05 23:25:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:25:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:25:08,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427604121] [2020-10-05 23:25:08,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:25:08,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 23:25:08,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27752154] [2020-10-05 23:25:08,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:25:08,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:25:08,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:25:08,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:25:08,252 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-10-05 23:25:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:25:08,274 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-10-05 23:25:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:25:08,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:25:08,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:25:08,285 INFO L225 Difference]: With dead ends: 11 [2020-10-05 23:25:08,285 INFO L226 Difference]: Without dead ends: 11 [2020-10-05 23:25:08,287 INFO L675 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 [2020-10-05 23:25:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-05 23:25:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-05 23:25:08,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-05 23:25:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-10-05 23:25:08,320 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-10-05 23:25:08,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:25:08,320 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-05 23:25:08,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:25:08,321 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-10-05 23:25:08,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 23:25:08,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:08,321 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-05 23:25:08,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:25:08,322 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:25:08,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:08,322 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 1 times [2020-10-05 23:25:08,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:08,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023611938] [2020-10-05 23:25:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:25:08,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:25:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:25:08,356 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:25:08,377 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:25:08,377 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:25:08,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:25:08,380 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:25:08,380 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-05 23:25:08,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,386 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,386 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,387 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,387 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,388 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,388 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,388 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,388 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,389 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,389 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,389 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,390 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,390 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,396 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,396 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-05 23:25:08,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:25:08,399 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:25:08,399 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:25:08,399 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:25:08,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:25:08,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:25:08,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:25:08,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:25:08,402 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 38 transitions, 88 flow [2020-10-05 23:25:08,402 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-10-05 23:25:08,415 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-05 23:25:08,416 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-05 23:25:08,417 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-10-05 23:25:08,419 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-10-05 23:25:08,430 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-05 23:25:08,430 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-05 23:25:08,431 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-10-05 23:25:08,432 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 540 [2020-10-05 23:25:08,432 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:25:08,778 INFO L206 etLargeBlockEncoding]: Checked pairs total: 836 [2020-10-05 23:25:08,778 INFO L214 etLargeBlockEncoding]: Total number of compositions: 28 [2020-10-05 23:25:08,778 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 44 flow [2020-10-05 23:25:08,787 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 149 states. [2020-10-05 23:25:08,787 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-10-05 23:25:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:25:08,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:08,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:25:08,789 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:25:08,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:08,789 INFO L82 PathProgramCache]: Analyzing trace with hash 6502175, now seen corresponding path program 1 times [2020-10-05 23:25:08,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:08,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944114783] [2020-10-05 23:25:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:25:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:25:08,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944114783] [2020-10-05 23:25:08,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:25:08,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 23:25:08,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281701694] [2020-10-05 23:25:08,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:25:08,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:25:08,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:25:08,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:25:08,832 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-10-05 23:25:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:25:08,858 INFO L93 Difference]: Finished difference Result 87 states and 182 transitions. [2020-10-05 23:25:08,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:25:08,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:25:08,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:25:08,861 INFO L225 Difference]: With dead ends: 87 [2020-10-05 23:25:08,861 INFO L226 Difference]: Without dead ends: 87 [2020-10-05 23:25:08,861 INFO L675 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 [2020-10-05 23:25:08,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-05 23:25:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-05 23:25:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-05 23:25:08,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 182 transitions. [2020-10-05 23:25:08,879 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 182 transitions. Word has length 4 [2020-10-05 23:25:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:25:08,879 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 182 transitions. [2020-10-05 23:25:08,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:25:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 182 transitions. [2020-10-05 23:25:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 23:25:08,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:08,881 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-05 23:25:08,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 23:25:08,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:25:08,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:08,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1890616172, now seen corresponding path program 1 times [2020-10-05 23:25:08,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:08,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289044080] [2020-10-05 23:25:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:25:08,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:25:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:25:08,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:25:08,929 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:25:08,930 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:25:08,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:25:08,934 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:25:08,936 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-05 23:25:08,947 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,947 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,947 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,947 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,948 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,949 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,949 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,949 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,951 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:08,964 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-05 23:25:08,965 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:25:08,965 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:25:08,965 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:25:08,965 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:25:08,965 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:25:08,965 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:25:08,966 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:25:08,966 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:25:08,968 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 117 flow [2020-10-05 23:25:08,968 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-10-05 23:25:08,998 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-05 23:25:09,002 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-05 23:25:09,004 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-10-05 23:25:09,006 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-10-05 23:25:09,029 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-05 23:25:09,030 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-05 23:25:09,033 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-10-05 23:25:09,036 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1080 [2020-10-05 23:25:09,041 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:25:09,506 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1735 [2020-10-05 23:25:09,506 INFO L214 etLargeBlockEncoding]: Total number of compositions: 36 [2020-10-05 23:25:09,507 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 22 transitions, 65 flow [2020-10-05 23:25:09,545 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 749 states. [2020-10-05 23:25:09,545 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states. [2020-10-05 23:25:09,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:25:09,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:09,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:25:09,547 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:25:09,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:09,547 INFO L82 PathProgramCache]: Analyzing trace with hash 9425446, now seen corresponding path program 1 times [2020-10-05 23:25:09,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:09,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186004771] [2020-10-05 23:25:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:25:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:25:09,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186004771] [2020-10-05 23:25:09,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:25:09,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 23:25:09,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366852350] [2020-10-05 23:25:09,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:25:09,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:25:09,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:25:09,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:25:09,594 INFO L87 Difference]: Start difference. First operand 749 states. Second operand 3 states. [2020-10-05 23:25:09,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:25:09,651 INFO L93 Difference]: Finished difference Result 421 states and 1176 transitions. [2020-10-05 23:25:09,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:25:09,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:25:09,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:25:09,663 INFO L225 Difference]: With dead ends: 421 [2020-10-05 23:25:09,663 INFO L226 Difference]: Without dead ends: 421 [2020-10-05 23:25:09,663 INFO L675 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 [2020-10-05 23:25:09,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-05 23:25:09,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-10-05 23:25:09,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-05 23:25:09,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1176 transitions. [2020-10-05 23:25:09,727 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1176 transitions. Word has length 4 [2020-10-05 23:25:09,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:25:09,727 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 1176 transitions. [2020-10-05 23:25:09,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:25:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1176 transitions. [2020-10-05 23:25:09,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:25:09,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:09,728 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:25:09,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:25:09,729 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:25:09,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:09,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1692799425, now seen corresponding path program 1 times [2020-10-05 23:25:09,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:09,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851928025] [2020-10-05 23:25:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:25:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:25:09,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851928025] [2020-10-05 23:25:09,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:25:09,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:25:09,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224703835] [2020-10-05 23:25:09,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:25:09,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:25:09,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:25:09,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:25:09,792 INFO L87 Difference]: Start difference. First operand 421 states and 1176 transitions. Second operand 3 states. [2020-10-05 23:25:09,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:25:09,829 INFO L93 Difference]: Finished difference Result 319 states and 912 transitions. [2020-10-05 23:25:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:25:09,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 23:25:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:25:09,837 INFO L225 Difference]: With dead ends: 319 [2020-10-05 23:25:09,837 INFO L226 Difference]: Without dead ends: 319 [2020-10-05 23:25:09,838 INFO L675 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 [2020-10-05 23:25:09,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-05 23:25:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-10-05 23:25:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-05 23:25:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 912 transitions. [2020-10-05 23:25:09,881 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 912 transitions. Word has length 10 [2020-10-05 23:25:09,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:25:09,882 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 912 transitions. [2020-10-05 23:25:09,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:25:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 912 transitions. [2020-10-05 23:25:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 23:25:09,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:09,884 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-05 23:25:09,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:25:09,885 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:25:09,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:09,886 INFO L82 PathProgramCache]: Analyzing trace with hash 790757285, now seen corresponding path program 1 times [2020-10-05 23:25:09,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:09,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330504669] [2020-10-05 23:25:09,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:25:09,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:25:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:25:09,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:25:09,942 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:25:09,942 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:25:09,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 23:25:09,943 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:25:09,947 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-05 23:25:09,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,954 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,954 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,955 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,957 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,957 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,959 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,959 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,960 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,960 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,960 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,960 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,961 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,961 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,966 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,966 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,967 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:09,976 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-05 23:25:09,976 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:25:09,976 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:25:09,976 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:25:09,976 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:25:09,977 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:25:09,977 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:25:09,977 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:25:09,977 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:25:09,979 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 148 flow [2020-10-05 23:25:09,979 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-10-05 23:25:09,990 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-10-05 23:25:09,990 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-05 23:25:09,991 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 217 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-10-05 23:25:09,994 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-10-05 23:25:10,003 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-10-05 23:25:10,004 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-05 23:25:10,005 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 217 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-10-05 23:25:10,008 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1800 [2020-10-05 23:25:10,008 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:25:10,532 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3606 [2020-10-05 23:25:10,532 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2020-10-05 23:25:10,533 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 31 transitions, 94 flow [2020-10-05 23:25:11,161 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7269 states. [2020-10-05 23:25:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 7269 states. [2020-10-05 23:25:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:25:11,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:11,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:25:11,162 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:25:11,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:11,162 INFO L82 PathProgramCache]: Analyzing trace with hash 12782696, now seen corresponding path program 1 times [2020-10-05 23:25:11,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:11,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933320133] [2020-10-05 23:25:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:25:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:25:11,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933320133] [2020-10-05 23:25:11,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:25:11,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 23:25:11,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300136961] [2020-10-05 23:25:11,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:25:11,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:25:11,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:25:11,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:25:11,215 INFO L87 Difference]: Start difference. First operand 7269 states. Second operand 3 states. [2020-10-05 23:25:11,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:25:11,315 INFO L93 Difference]: Finished difference Result 4227 states and 15765 transitions. [2020-10-05 23:25:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:25:11,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:25:11,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:25:11,356 INFO L225 Difference]: With dead ends: 4227 [2020-10-05 23:25:11,356 INFO L226 Difference]: Without dead ends: 4227 [2020-10-05 23:25:11,356 INFO L675 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 [2020-10-05 23:25:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2020-10-05 23:25:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 4227. [2020-10-05 23:25:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4227 states. [2020-10-05 23:25:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 15765 transitions. [2020-10-05 23:25:11,732 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 15765 transitions. Word has length 4 [2020-10-05 23:25:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:25:11,732 INFO L479 AbstractCegarLoop]: Abstraction has 4227 states and 15765 transitions. [2020-10-05 23:25:11,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:25:11,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 15765 transitions. [2020-10-05 23:25:11,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:25:11,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:11,734 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:25:11,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-05 23:25:11,735 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:25:11,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:11,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1357463974, now seen corresponding path program 1 times [2020-10-05 23:25:11,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:11,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344315602] [2020-10-05 23:25:11,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:25:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:25:11,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344315602] [2020-10-05 23:25:11,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:25:11,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:25:11,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887616382] [2020-10-05 23:25:11,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:25:11,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:25:11,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:25:11,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:25:11,772 INFO L87 Difference]: Start difference. First operand 4227 states and 15765 transitions. Second operand 3 states. [2020-10-05 23:25:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:25:11,852 INFO L93 Difference]: Finished difference Result 1975 states and 7342 transitions. [2020-10-05 23:25:11,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:25:11,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 23:25:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:25:11,876 INFO L225 Difference]: With dead ends: 1975 [2020-10-05 23:25:11,877 INFO L226 Difference]: Without dead ends: 1975 [2020-10-05 23:25:11,878 INFO L675 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 [2020-10-05 23:25:11,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2020-10-05 23:25:11,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1975. [2020-10-05 23:25:11,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-10-05 23:25:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 7342 transitions. [2020-10-05 23:25:11,982 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 7342 transitions. Word has length 10 [2020-10-05 23:25:11,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:25:11,982 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 7342 transitions. [2020-10-05 23:25:11,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:25:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 7342 transitions. [2020-10-05 23:25:11,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:25:11,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:11,991 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-05 23:25:11,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 23:25:11,992 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-05 23:25:11,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:11,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1886547670, now seen corresponding path program 1 times [2020-10-05 23:25:11,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:11,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423460340] [2020-10-05 23:25:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:25:12,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:25:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:25:12,039 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:25:12,049 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:25:12,050 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:25:12,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 23:25:12,053 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:25:12,054 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-05 23:25:12,061 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,061 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,064 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,064 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,065 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,065 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,066 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,066 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,066 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,066 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,067 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,067 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,073 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,077 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,083 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:12,084 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-05 23:25:12,085 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:25:12,085 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:25:12,085 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:25:12,085 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:25:12,085 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:25:12,085 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:25:12,085 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:25:12,085 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:25:12,087 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 181 flow [2020-10-05 23:25:12,087 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-10-05 23:25:12,103 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-10-05 23:25:12,103 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-05 23:25:12,105 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 264 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-10-05 23:25:12,108 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-10-05 23:25:12,120 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-10-05 23:25:12,120 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-05 23:25:12,121 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 264 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-10-05 23:25:12,125 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2700 [2020-10-05 23:25:12,125 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:25:12,776 INFO L206 etLargeBlockEncoding]: Checked pairs total: 5637 [2020-10-05 23:25:12,776 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2020-10-05 23:25:12,776 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 37 transitions, 119 flow [2020-10-05 23:25:18,747 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 36397 states. [2020-10-05 23:25:18,747 INFO L276 IsEmpty]: Start isEmpty. Operand 36397 states. [2020-10-05 23:25:18,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-05 23:25:18,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:18,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-05 23:25:18,748 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:25:18,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:18,748 INFO L82 PathProgramCache]: Analyzing trace with hash 16657360, now seen corresponding path program 1 times [2020-10-05 23:25:18,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:18,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595498279] [2020-10-05 23:25:18,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:25:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:25:18,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595498279] [2020-10-05 23:25:18,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:25:18,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 23:25:18,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235979268] [2020-10-05 23:25:18,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:25:18,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:25:18,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:25:18,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:25:18,801 INFO L87 Difference]: Start difference. First operand 36397 states. Second operand 3 states. [2020-10-05 23:25:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:25:19,320 INFO L93 Difference]: Finished difference Result 22246 states and 100423 transitions. [2020-10-05 23:25:19,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:25:19,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-05 23:25:19,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:25:19,507 INFO L225 Difference]: With dead ends: 22246 [2020-10-05 23:25:19,508 INFO L226 Difference]: Without dead ends: 22246 [2020-10-05 23:25:19,509 INFO L675 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 [2020-10-05 23:25:21,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22246 states. [2020-10-05 23:25:21,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22246 to 22246. [2020-10-05 23:25:21,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22246 states. [2020-10-05 23:25:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22246 states to 22246 states and 100423 transitions. [2020-10-05 23:25:21,790 INFO L78 Accepts]: Start accepts. Automaton has 22246 states and 100423 transitions. Word has length 4 [2020-10-05 23:25:21,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:25:21,790 INFO L479 AbstractCegarLoop]: Abstraction has 22246 states and 100423 transitions. [2020-10-05 23:25:21,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:25:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand 22246 states and 100423 transitions. [2020-10-05 23:25:21,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 23:25:21,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:21,791 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:25:21,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-05 23:25:21,792 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:25:21,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:21,792 INFO L82 PathProgramCache]: Analyzing trace with hash -667162749, now seen corresponding path program 1 times [2020-10-05 23:25:21,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:21,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413711892] [2020-10-05 23:25:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:25:21,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-05 23:25:21,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413711892] [2020-10-05 23:25:21,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:25:21,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 23:25:21,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996086430] [2020-10-05 23:25:21,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:25:21,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:25:21,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:25:21,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:25:21,823 INFO L87 Difference]: Start difference. First operand 22246 states and 100423 transitions. Second operand 3 states. [2020-10-05 23:25:21,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:25:21,908 INFO L93 Difference]: Finished difference Result 7918 states and 35335 transitions. [2020-10-05 23:25:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:25:21,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-05 23:25:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:25:21,953 INFO L225 Difference]: With dead ends: 7918 [2020-10-05 23:25:21,953 INFO L226 Difference]: Without dead ends: 7918 [2020-10-05 23:25:21,953 INFO L675 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 [2020-10-05 23:25:22,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2020-10-05 23:25:22,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7918. [2020-10-05 23:25:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7918 states. [2020-10-05 23:25:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7918 states to 7918 states and 35335 transitions. [2020-10-05 23:25:22,592 INFO L78 Accepts]: Start accepts. Automaton has 7918 states and 35335 transitions. Word has length 10 [2020-10-05 23:25:22,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:25:22,592 INFO L479 AbstractCegarLoop]: Abstraction has 7918 states and 35335 transitions. [2020-10-05 23:25:22,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:25:22,592 INFO L276 IsEmpty]: Start isEmpty. Operand 7918 states and 35335 transitions. [2020-10-05 23:25:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-05 23:25:22,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:25:22,595 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:25:22,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-05 23:25:22,597 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:25:22,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:25:22,597 INFO L82 PathProgramCache]: Analyzing trace with hash 369573413, now seen corresponding path program 1 times [2020-10-05 23:25:22,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:25:22,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220837982] [2020-10-05 23:25:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:25:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:25:22,613 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:25:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-05 23:25:22,625 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-05 23:25:22,634 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-05 23:25:22,634 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-05 23:25:22,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-05 23:25:22,635 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-05 23:25:22,636 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-05 23:25:22,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,654 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,654 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,655 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,656 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,656 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,662 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,665 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,670 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,670 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:25:22,671 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-05 23:25:22,672 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:25:22,672 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:25:22,672 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:25:22,672 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:25:22,672 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:25:22,672 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:25:22,672 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:25:22,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:25:22,676 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 78 transitions, 216 flow [2020-10-05 23:25:22,676 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-10-05 23:25:22,701 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-10-05 23:25:22,702 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-05 23:25:22,704 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-10-05 23:25:22,709 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-10-05 23:25:22,725 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-10-05 23:25:22,726 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-05 23:25:22,727 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-10-05 23:25:22,733 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3780 [2020-10-05 23:25:22,733 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:25:23,410 INFO L206 etLargeBlockEncoding]: Checked pairs total: 9546 [2020-10-05 23:25:23,410 INFO L214 etLargeBlockEncoding]: Total number of compositions: 50 [2020-10-05 23:25:23,411 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 48 transitions, 156 flow Received shutdown request... [2020-10-05 23:29:35,906 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-05 23:29:35,910 WARN L228 ceAbstractionStarter]: Timeout [2020-10-05 23:29:35,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:29:35 BasicIcfg [2020-10-05 23:29:35,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:29:35,917 INFO L168 Benchmark]: Toolchain (without parser) took 269720.97 ms. Allocated memory was 141.0 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 102.5 MB in the beginning and 613.4 MB in the end (delta: -510.8 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-10-05 23:29:35,918 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 23:29:35,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.17 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 164.5 MB in the end (delta: -62.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:29:35,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.63 ms. Allocated memory is still 203.9 MB. Free memory was 164.5 MB in the beginning and 162.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:29:35,921 INFO L168 Benchmark]: Boogie Preprocessor took 25.30 ms. Allocated memory is still 203.9 MB. Free memory was 162.6 MB in the beginning and 160.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-05 23:29:35,922 INFO L168 Benchmark]: RCFGBuilder took 324.37 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 145.1 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-10-05 23:29:35,923 INFO L168 Benchmark]: TraceAbstraction took 268638.70 ms. Allocated memory was 203.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 144.5 MB in the beginning and 613.4 MB in the end (delta: -468.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2020-10-05 23:29:35,932 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.17 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 164.5 MB in the end (delta: -62.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.63 ms. Allocated memory is still 203.9 MB. Free memory was 164.5 MB in the beginning and 162.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.30 ms. Allocated memory is still 203.9 MB. Free memory was 162.6 MB in the beginning and 160.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.37 ms. Allocated memory is still 203.9 MB. Free memory was 160.7 MB in the beginning and 145.1 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 268638.70 ms. Allocated memory was 203.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 144.5 MB in the beginning and 613.4 MB in the end (delta: -468.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 29 ProgramPointsBefore, 11 ProgramPointsAfterwards, 28 TransitionsBefore, 8 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 83 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 114 CheckedPairsTotal, 22 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.3s, 40 ProgramPointsBefore, 20 ProgramPointsAfterwards, 38 TransitionsBefore, 16 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 279 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 836 CheckedPairsTotal, 28 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 51 ProgramPointsBefore, 27 ProgramPointsAfterwards, 48 TransitionsBefore, 22 TransitionsAfterwards, 1080 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 520 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1735 CheckedPairsTotal, 36 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 62 ProgramPointsBefore, 38 ProgramPointsAfterwards, 58 TransitionsBefore, 31 TransitionsAfterwards, 1800 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 781 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3606 CheckedPairsTotal, 37 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 73 ProgramPointsBefore, 45 ProgramPointsAfterwards, 68 TransitionsBefore, 37 TransitionsAfterwards, 2700 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 1219 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 5637 CheckedPairsTotal, 45 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 84 ProgramPointsBefore, 56 ProgramPointsAfterwards, 78 TransitionsBefore, 48 TransitionsAfterwards, 3780 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 1655 VarBasedMoverChecksPositive, 78 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 9546 CheckedPairsTotal, 50 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 677]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 677). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 56 places, 48 transitions, 156 flow. Already constructed 285428 states. Currently 33404 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 268.3s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 262.6s, HoareTripleCheckerStatistics: 179 SDtfs, 87 SDslu, 64 SDs, 0 SdLazy, 89 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36397occurred 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: 3.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 774 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 6/6 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 could not prove your program: Timeout Completed graceful shutdown