/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 14:20:52,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 14:20:52,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 14:20:52,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 14:20:52,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 14:20:52,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 14:20:52,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 14:20:52,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 14:20:52,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 14:20:52,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 14:20:52,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 14:20:52,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 14:20:52,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 14:20:52,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 14:20:52,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 14:20:52,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 14:20:52,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 14:20:52,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 14:20:52,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 14:20:52,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 14:20:52,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 14:20:52,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 14:20:52,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 14:20:52,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 14:20:52,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-16 14:20:52,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 14:20:52,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 14:20:52,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 14:20:52,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 14:20:52,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 14:20:52,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 14:20:52,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 14:20:52,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 14:20:52,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 14:20:52,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 14:20:52,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 14:20:52,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-16 14:20:52,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 14:20:52,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 14:20:52,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 14:20:52,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 14:20:52,180 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 14:20:52,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 14:20:52,181 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 14:20:52,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 14:20:52,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 14:20:52,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 14:20:52,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 14:20:52,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 14:20:52,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 14:20:52,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 14:20:52,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 14:20:52,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 14:20:52,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 14:20:52,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 14:20:52,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 14:20:52,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 14:20:52,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 14:20:52,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 14:20:52,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 14:20:52,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 14:20:52,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 14:20:52,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 14:20:52,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 14:20:52,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 14:20:52,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 14:20:52,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 14:20:52,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 14:20:52,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 14:20:52,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 14:20:52,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 14:20:52,694 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 14:20:52,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-09-16 14:20:52,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ee46e788/699a324724c64404a51153a8e00b3cdd/FLAG2c6cdab16 [2020-09-16 14:20:53,333 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 14:20:53,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-09-16 14:20:53,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ee46e788/699a324724c64404a51153a8e00b3cdd/FLAG2c6cdab16 [2020-09-16 14:20:53,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ee46e788/699a324724c64404a51153a8e00b3cdd [2020-09-16 14:20:53,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 14:20:53,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 14:20:53,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 14:20:53,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 14:20:53,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 14:20:53,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 02:20:53" (1/1) ... [2020-09-16 14:20:53,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38dc30ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:53, skipping insertion in model container [2020-09-16 14:20:53,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 02:20:53" (1/1) ... [2020-09-16 14:20:53,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 14:20:53,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 14:20:54,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 14:20:54,279 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 14:20:54,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 14:20:54,413 INFO L208 MainTranslator]: Completed translation [2020-09-16 14:20:54,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54 WrapperNode [2020-09-16 14:20:54,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 14:20:54,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 14:20:54,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 14:20:54,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 14:20:54,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54" (1/1) ... [2020-09-16 14:20:54,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54" (1/1) ... [2020-09-16 14:20:54,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 14:20:54,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 14:20:54,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 14:20:54,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 14:20:54,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54" (1/1) ... [2020-09-16 14:20:54,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54" (1/1) ... [2020-09-16 14:20:54,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54" (1/1) ... [2020-09-16 14:20:54,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54" (1/1) ... [2020-09-16 14:20:54,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54" (1/1) ... [2020-09-16 14:20:54,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54" (1/1) ... [2020-09-16 14:20:54,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54" (1/1) ... [2020-09-16 14:20:54,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 14:20:54,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 14:20:54,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 14:20:54,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 14:20:54,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54" (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 [2020-09-16 14:20:54,616 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-16 14:20:54,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-16 14:20:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 14:20:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 14:20:54,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 14:20:54,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 14:20:54,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 14:20:54,622 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 14:20:55,021 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 14:20:55,022 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-16 14:20:55,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 02:20:55 BoogieIcfgContainer [2020-09-16 14:20:55,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 14:20:55,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 14:20:55,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 14:20:55,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 14:20:55,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 02:20:53" (1/3) ... [2020-09-16 14:20:55,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3f2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 02:20:55, skipping insertion in model container [2020-09-16 14:20:55,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 02:20:54" (2/3) ... [2020-09-16 14:20:55,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3f2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 02:20:55, skipping insertion in model container [2020-09-16 14:20:55,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 02:20:55" (3/3) ... [2020-09-16 14:20:55,050 INFO L109 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-09-16 14:20:55,062 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 14:20:55,062 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 14:20:55,075 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-16 14:20:55,076 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 14:20:55,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:20:55,116 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:20:55,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:20:55,116 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:20:55,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:20:55,119 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:20:55,128 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:20:55,128 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:20:55,129 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:20:55,129 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 14:20:55,161 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 14:20:55,184 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 14:20:55,184 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 14:20:55,185 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 14:20:55,185 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 14:20:55,185 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 14:20:55,185 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 14:20:55,185 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 14:20:55,185 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 14:20:55,206 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 92 transitions, 189 flow [2020-09-16 14:20:55,208 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-09-16 14:20:55,262 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-09-16 14:20:55,262 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 14:20:55,274 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2020-09-16 14:20:55,280 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-09-16 14:20:55,316 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-09-16 14:20:55,319 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 14:20:55,321 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2020-09-16 14:20:55,326 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2992 [2020-09-16 14:20:55,328 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 14:20:56,721 INFO L206 etLargeBlockEncoding]: Checked pairs total: 7520 [2020-09-16 14:20:56,721 INFO L214 etLargeBlockEncoding]: Total number of compositions: 46 [2020-09-16 14:20:56,727 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 51 transitions, 107 flow [2020-09-16 14:20:56,771 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 291 states. [2020-09-16 14:20:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2020-09-16 14:20:56,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-09-16 14:20:56,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:20:56,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-09-16 14:20:56,786 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:20:56,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:20:56,794 INFO L82 PathProgramCache]: Analyzing trace with hash 12384667, now seen corresponding path program 1 times [2020-09-16 14:20:56,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:20:56,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214553246] [2020-09-16 14:20:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:20:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:20:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:20:57,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214553246] [2020-09-16 14:20:57,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:20:57,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 14:20:57,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797476020] [2020-09-16 14:20:57,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-16 14:20:57,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:20:57,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-16 14:20:57,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 14:20:57,032 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 2 states. [2020-09-16 14:20:57,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:20:57,067 INFO L93 Difference]: Finished difference Result 291 states and 750 transitions. [2020-09-16 14:20:57,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-16 14:20:57,069 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-09-16 14:20:57,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:20:57,090 INFO L225 Difference]: With dead ends: 291 [2020-09-16 14:20:57,091 INFO L226 Difference]: Without dead ends: 282 [2020-09-16 14:20:57,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-16 14:20:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-16 14:20:57,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-09-16 14:20:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-16 14:20:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 732 transitions. [2020-09-16 14:20:57,168 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 732 transitions. Word has length 4 [2020-09-16 14:20:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:20:57,168 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 732 transitions. [2020-09-16 14:20:57,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-16 14:20:57,168 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 732 transitions. [2020-09-16 14:20:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 14:20:57,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:20:57,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:20:57,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 14:20:57,170 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:20:57,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:20:57,171 INFO L82 PathProgramCache]: Analyzing trace with hash 27980612, now seen corresponding path program 1 times [2020-09-16 14:20:57,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:20:57,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891360483] [2020-09-16 14:20:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:20:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:20:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:20:57,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891360483] [2020-09-16 14:20:57,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:20:57,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 14:20:57,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419899922] [2020-09-16 14:20:57,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 14:20:57,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:20:57,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 14:20:57,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:57,249 INFO L87 Difference]: Start difference. First operand 282 states and 732 transitions. Second operand 3 states. [2020-09-16 14:20:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:20:57,283 INFO L93 Difference]: Finished difference Result 281 states and 714 transitions. [2020-09-16 14:20:57,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 14:20:57,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-16 14:20:57,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:20:57,287 INFO L225 Difference]: With dead ends: 281 [2020-09-16 14:20:57,287 INFO L226 Difference]: Without dead ends: 242 [2020-09-16 14:20:57,288 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 [2020-09-16 14:20:57,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-16 14:20:57,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 236. [2020-09-16 14:20:57,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-16 14:20:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 615 transitions. [2020-09-16 14:20:57,310 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 615 transitions. Word has length 9 [2020-09-16 14:20:57,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:20:57,311 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 615 transitions. [2020-09-16 14:20:57,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 14:20:57,311 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 615 transitions. [2020-09-16 14:20:57,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 14:20:57,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:20:57,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:20:57,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 14:20:57,313 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:20:57,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:20:57,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1037274544, now seen corresponding path program 1 times [2020-09-16 14:20:57,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:20:57,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347234743] [2020-09-16 14:20:57,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:20:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:20:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:20:57,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347234743] [2020-09-16 14:20:57,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:20:57,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 14:20:57,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103962692] [2020-09-16 14:20:57,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 14:20:57,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:20:57,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 14:20:57,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:57,388 INFO L87 Difference]: Start difference. First operand 236 states and 615 transitions. Second operand 3 states. [2020-09-16 14:20:57,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:20:57,415 INFO L93 Difference]: Finished difference Result 225 states and 582 transitions. [2020-09-16 14:20:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 14:20:57,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-16 14:20:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:20:57,418 INFO L225 Difference]: With dead ends: 225 [2020-09-16 14:20:57,418 INFO L226 Difference]: Without dead ends: 186 [2020-09-16 14:20:57,418 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 [2020-09-16 14:20:57,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-09-16 14:20:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-09-16 14:20:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-16 14:20:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 490 transitions. [2020-09-16 14:20:57,432 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 490 transitions. Word has length 9 [2020-09-16 14:20:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:20:57,433 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 490 transitions. [2020-09-16 14:20:57,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 14:20:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 490 transitions. [2020-09-16 14:20:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 14:20:57,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:20:57,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:20:57,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 14:20:57,436 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:20:57,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:20:57,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1540220195, now seen corresponding path program 1 times [2020-09-16 14:20:57,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:20:57,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102549986] [2020-09-16 14:20:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:20:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:20:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:20:57,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102549986] [2020-09-16 14:20:57,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:20:57,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:20:57,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367901125] [2020-09-16 14:20:57,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 14:20:57,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:20:57,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 14:20:57,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:57,517 INFO L87 Difference]: Start difference. First operand 186 states and 490 transitions. Second operand 3 states. [2020-09-16 14:20:57,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:20:57,539 INFO L93 Difference]: Finished difference Result 308 states and 768 transitions. [2020-09-16 14:20:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 14:20:57,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-16 14:20:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:20:57,543 INFO L225 Difference]: With dead ends: 308 [2020-09-16 14:20:57,543 INFO L226 Difference]: Without dead ends: 306 [2020-09-16 14:20:57,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:57,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-16 14:20:57,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 229. [2020-09-16 14:20:57,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-16 14:20:57,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 602 transitions. [2020-09-16 14:20:57,560 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 602 transitions. Word has length 15 [2020-09-16 14:20:57,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:20:57,561 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 602 transitions. [2020-09-16 14:20:57,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 14:20:57,561 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 602 transitions. [2020-09-16 14:20:57,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 14:20:57,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:20:57,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:20:57,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 14:20:57,564 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:20:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:20:57,565 INFO L82 PathProgramCache]: Analyzing trace with hash 988190489, now seen corresponding path program 1 times [2020-09-16 14:20:57,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:20:57,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796878373] [2020-09-16 14:20:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:20:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:20:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:20:57,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796878373] [2020-09-16 14:20:57,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:20:57,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:20:57,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742864493] [2020-09-16 14:20:57,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 14:20:57,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:20:57,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 14:20:57,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:57,634 INFO L87 Difference]: Start difference. First operand 229 states and 602 transitions. Second operand 3 states. [2020-09-16 14:20:57,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:20:57,698 INFO L93 Difference]: Finished difference Result 312 states and 770 transitions. [2020-09-16 14:20:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 14:20:57,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-16 14:20:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:20:57,700 INFO L225 Difference]: With dead ends: 312 [2020-09-16 14:20:57,701 INFO L226 Difference]: Without dead ends: 237 [2020-09-16 14:20:57,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:57,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-16 14:20:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 216. [2020-09-16 14:20:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-16 14:20:57,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 534 transitions. [2020-09-16 14:20:57,714 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 534 transitions. Word has length 15 [2020-09-16 14:20:57,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:20:57,714 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 534 transitions. [2020-09-16 14:20:57,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 14:20:57,714 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 534 transitions. [2020-09-16 14:20:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 14:20:57,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:20:57,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:20:57,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 14:20:57,717 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:20:57,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:20:57,717 INFO L82 PathProgramCache]: Analyzing trace with hash -795157281, now seen corresponding path program 2 times [2020-09-16 14:20:57,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:20:57,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909988390] [2020-09-16 14:20:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:20:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:20:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:20:57,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909988390] [2020-09-16 14:20:57,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:20:57,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:20:57,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231106013] [2020-09-16 14:20:57,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 14:20:57,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:20:57,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 14:20:57,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:57,765 INFO L87 Difference]: Start difference. First operand 216 states and 534 transitions. Second operand 3 states. [2020-09-16 14:20:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:20:57,781 INFO L93 Difference]: Finished difference Result 293 states and 674 transitions. [2020-09-16 14:20:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 14:20:57,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-16 14:20:57,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:20:57,784 INFO L225 Difference]: With dead ends: 293 [2020-09-16 14:20:57,784 INFO L226 Difference]: Without dead ends: 293 [2020-09-16 14:20:57,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-16 14:20:57,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 216. [2020-09-16 14:20:57,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-16 14:20:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 522 transitions. [2020-09-16 14:20:57,795 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 522 transitions. Word has length 15 [2020-09-16 14:20:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:20:57,796 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 522 transitions. [2020-09-16 14:20:57,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 14:20:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 522 transitions. [2020-09-16 14:20:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 14:20:57,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:20:57,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:20:57,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 14:20:57,799 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:20:57,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:20:57,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1884700835, now seen corresponding path program 2 times [2020-09-16 14:20:57,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:20:57,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146393051] [2020-09-16 14:20:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:20:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:20:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:20:57,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146393051] [2020-09-16 14:20:57,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:20:57,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:20:57,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55864978] [2020-09-16 14:20:57,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 14:20:57,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:20:57,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 14:20:57,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:57,839 INFO L87 Difference]: Start difference. First operand 216 states and 522 transitions. Second operand 3 states. [2020-09-16 14:20:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:20:57,886 INFO L93 Difference]: Finished difference Result 181 states and 375 transitions. [2020-09-16 14:20:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 14:20:57,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-16 14:20:57,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:20:57,888 INFO L225 Difference]: With dead ends: 181 [2020-09-16 14:20:57,889 INFO L226 Difference]: Without dead ends: 115 [2020-09-16 14:20:57,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-16 14:20:57,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-09-16 14:20:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-16 14:20:57,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 190 transitions. [2020-09-16 14:20:57,896 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 190 transitions. Word has length 15 [2020-09-16 14:20:57,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:20:57,897 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 190 transitions. [2020-09-16 14:20:57,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 14:20:57,897 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 190 transitions. [2020-09-16 14:20:57,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 14:20:57,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:20:57,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:20:57,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 14:20:57,899 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:20:57,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:20:57,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1567500834, now seen corresponding path program 1 times [2020-09-16 14:20:57,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:20:57,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928467801] [2020-09-16 14:20:57,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:20:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:20:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:20:57,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928467801] [2020-09-16 14:20:57,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:20:57,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:20:57,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674674820] [2020-09-16 14:20:57,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 14:20:57,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:20:57,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 14:20:57,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:57,991 INFO L87 Difference]: Start difference. First operand 96 states and 190 transitions. Second operand 3 states. [2020-09-16 14:20:58,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:20:58,007 INFO L93 Difference]: Finished difference Result 98 states and 191 transitions. [2020-09-16 14:20:58,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 14:20:58,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-16 14:20:58,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:20:58,009 INFO L225 Difference]: With dead ends: 98 [2020-09-16 14:20:58,009 INFO L226 Difference]: Without dead ends: 81 [2020-09-16 14:20:58,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:58,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-16 14:20:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-16 14:20:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-16 14:20:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 159 transitions. [2020-09-16 14:20:58,013 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 159 transitions. Word has length 17 [2020-09-16 14:20:58,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:20:58,013 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 159 transitions. [2020-09-16 14:20:58,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 14:20:58,014 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 159 transitions. [2020-09-16 14:20:58,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-16 14:20:58,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 14:20:58,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 14:20:58,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 14:20:58,015 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 14:20:58,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 14:20:58,015 INFO L82 PathProgramCache]: Analyzing trace with hash 322655978, now seen corresponding path program 1 times [2020-09-16 14:20:58,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 14:20:58,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104842014] [2020-09-16 14:20:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 14:20:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 14:20:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 14:20:58,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104842014] [2020-09-16 14:20:58,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 14:20:58,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 14:20:58,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21477906] [2020-09-16 14:20:58,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 14:20:58,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 14:20:58,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 14:20:58,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:58,064 INFO L87 Difference]: Start difference. First operand 81 states and 159 transitions. Second operand 3 states. [2020-09-16 14:20:58,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 14:20:58,071 INFO L93 Difference]: Finished difference Result 56 states and 119 transitions. [2020-09-16 14:20:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 14:20:58,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-16 14:20:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 14:20:58,072 INFO L225 Difference]: With dead ends: 56 [2020-09-16 14:20:58,072 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 14:20:58,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 14:20:58,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 14:20:58,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 14:20:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 14:20:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 14:20:58,074 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-16 14:20:58,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 14:20:58,074 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 14:20:58,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 14:20:58,074 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 14:20:58,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 14:20:58,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 14:20:58,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 02:20:58 BasicIcfg [2020-09-16 14:20:58,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 14:20:58,083 INFO L168 Benchmark]: Toolchain (without parser) took 4458.67 ms. Allocated memory was 148.4 MB in the beginning and 244.3 MB in the end (delta: 95.9 MB). Free memory was 102.9 MB in the beginning and 106.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 92.4 MB. Max. memory is 7.1 GB. [2020-09-16 14:20:58,084 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-16 14:20:58,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.58 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 165.6 MB in the end (delta: -63.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-09-16 14:20:58,086 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.87 ms. Allocated memory is still 205.5 MB. Free memory was 165.6 MB in the beginning and 163.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-16 14:20:58,087 INFO L168 Benchmark]: Boogie Preprocessor took 42.99 ms. Allocated memory is still 205.5 MB. Free memory was 163.7 MB in the beginning and 162.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-16 14:20:58,088 INFO L168 Benchmark]: RCFGBuilder took 507.20 ms. Allocated memory is still 205.5 MB. Free memory was 162.4 MB in the beginning and 139.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-16 14:20:58,088 INFO L168 Benchmark]: TraceAbstraction took 3050.68 ms. Allocated memory was 205.5 MB in the beginning and 244.3 MB in the end (delta: 38.8 MB). Free memory was 139.2 MB in the beginning and 106.4 MB in the end (delta: 32.8 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2020-09-16 14:20:58,093 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 148.4 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 785.58 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 165.6 MB in the end (delta: -63.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.87 ms. Allocated memory is still 205.5 MB. Free memory was 165.6 MB in the beginning and 163.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.99 ms. Allocated memory is still 205.5 MB. Free memory was 163.7 MB in the beginning and 162.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 507.20 ms. Allocated memory is still 205.5 MB. Free memory was 162.4 MB in the beginning and 139.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3050.68 ms. Allocated memory was 205.5 MB in the beginning and 244.3 MB in the end (delta: 38.8 MB). Free memory was 139.2 MB in the beginning and 106.4 MB in the end (delta: 32.8 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 72 ProgramPointsBefore, 39 ProgramPointsAfterwards, 92 TransitionsBefore, 51 TransitionsAfterwards, 2992 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 1205 VarBasedMoverChecksPositive, 82 VarBasedMoverChecksNegative, 50 SemBasedMoverChecksPositive, 61 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 0 MoverChecksTotal, 7520 CheckedPairsTotal, 46 TotalNumberOfCompositions - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 724]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 474 SDtfs, 189 SDslu, 211 SDs, 0 SdLazy, 96 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 200 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 2461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...