/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/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-ext/15_dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 19:26:07,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 19:26:07,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 19:26:07,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 19:26:07,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 19:26:07,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 19:26:07,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 19:26:07,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 19:26:07,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 19:26:07,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 19:26:07,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 19:26:07,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 19:26:07,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 19:26:07,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 19:26:07,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 19:26:07,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 19:26:07,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 19:26:07,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 19:26:07,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 19:26:07,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 19:26:07,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 19:26:07,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 19:26:07,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 19:26:07,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 19:26:07,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 19:26:07,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 19:26:07,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 19:26:07,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 19:26:07,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 19:26:07,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 19:26:07,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 19:26:07,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 19:26:07,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 19:26:07,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 19:26:07,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 19:26:07,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 19:26:07,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 19:26:07,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 19:26:07,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 19:26:07,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 19:26:07,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 19:26:07,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-MCR.epf [2019-12-27 19:26:07,179 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 19:26:07,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 19:26:07,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 19:26:07,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 19:26:07,181 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 19:26:07,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 19:26:07,182 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 19:26:07,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 19:26:07,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 19:26:07,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 19:26:07,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 19:26:07,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 19:26:07,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 19:26:07,183 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 19:26:07,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 19:26:07,183 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 19:26:07,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 19:26:07,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 19:26:07,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 19:26:07,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 19:26:07,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 19:26:07,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 19:26:07,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 19:26:07,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 19:26:07,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 19:26:07,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 19:26:07,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 19:26:07,186 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 19:26:07,186 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 19:26:07,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 19:26:07,186 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 19:26:07,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 19:26:07,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 19:26:07,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 19:26:07,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 19:26:07,484 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 19:26:07,486 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 19:26:07,486 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/15_dekker.i [2019-12-27 19:26:07,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99b47e9bb/26605c1c6584446fb2a322535ff7c82f/FLAG5197771fb [2019-12-27 19:26:08,072 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 19:26:08,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/15_dekker.i [2019-12-27 19:26:08,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99b47e9bb/26605c1c6584446fb2a322535ff7c82f/FLAG5197771fb [2019-12-27 19:26:08,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99b47e9bb/26605c1c6584446fb2a322535ff7c82f [2019-12-27 19:26:08,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 19:26:08,339 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 19:26:08,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 19:26:08,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 19:26:08,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 19:26:08,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 07:26:08" (1/1) ... [2019-12-27 19:26:08,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37429fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:08, skipping insertion in model container [2019-12-27 19:26:08,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 07:26:08" (1/1) ... [2019-12-27 19:26:08,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 19:26:08,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 19:26:08,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 19:26:08,903 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 19:26:08,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 19:26:09,019 INFO L208 MainTranslator]: Completed translation [2019-12-27 19:26:09,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09 WrapperNode [2019-12-27 19:26:09,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 19:26:09,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 19:26:09,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 19:26:09,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 19:26:09,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09" (1/1) ... [2019-12-27 19:26:09,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09" (1/1) ... [2019-12-27 19:26:09,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 19:26:09,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 19:26:09,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 19:26:09,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 19:26:09,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09" (1/1) ... [2019-12-27 19:26:09,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09" (1/1) ... [2019-12-27 19:26:09,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09" (1/1) ... [2019-12-27 19:26:09,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09" (1/1) ... [2019-12-27 19:26:09,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09" (1/1) ... [2019-12-27 19:26:09,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09" (1/1) ... [2019-12-27 19:26:09,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09" (1/1) ... [2019-12-27 19:26:09,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 19:26:09,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 19:26:09,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 19:26:09,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 19:26:09,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09" (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 [2019-12-27 19:26:09,175 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-27 19:26:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-27 19:26:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 19:26:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 19:26:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 19:26:09,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 19:26:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 19:26:09,179 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 19:26:09,557 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 19:26:09,557 INFO L287 CfgBuilder]: Removed 10 assume(true) statements. [2019-12-27 19:26:09,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 07:26:09 BoogieIcfgContainer [2019-12-27 19:26:09,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 19:26:09,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 19:26:09,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 19:26:09,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 19:26:09,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 07:26:08" (1/3) ... [2019-12-27 19:26:09,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a339b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 07:26:09, skipping insertion in model container [2019-12-27 19:26:09,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 07:26:09" (2/3) ... [2019-12-27 19:26:09,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a339b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 07:26:09, skipping insertion in model container [2019-12-27 19:26:09,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 07:26:09" (3/3) ... [2019-12-27 19:26:09,567 INFO L109 eAbstractionObserver]: Analyzing ICFG 15_dekker.i [2019-12-27 19:26:09,577 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 19:26:09,577 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 19:26:09,584 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-27 19:26:09,585 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 19:26:09,609 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:09,610 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:09,610 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:09,610 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:09,612 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:09,612 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:09,616 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:09,616 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:09,617 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:09,617 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 19:26:09,633 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 19:26:09,649 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 19:26:09,649 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 19:26:09,649 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 19:26:09,649 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 19:26:09,650 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 19:26:09,650 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 19:26:09,650 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 19:26:09,650 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 19:26:09,662 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 65 transitions [2019-12-27 19:26:09,664 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions [2019-12-27 19:26:09,710 INFO L132 PetriNetUnfolder]: 12/64 cut-off events. [2019-12-27 19:26:09,711 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 19:26:09,720 INFO L76 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2019-12-27 19:26:09,725 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 65 transitions [2019-12-27 19:26:09,746 INFO L132 PetriNetUnfolder]: 12/64 cut-off events. [2019-12-27 19:26:09,746 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 19:26:09,748 INFO L76 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 12/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2019-12-27 19:26:09,751 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1302 [2019-12-27 19:26:09,752 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 19:26:10,547 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4161 [2019-12-27 19:26:10,548 INFO L214 etLargeBlockEncoding]: Total number of compositions: 33 [2019-12-27 19:26:10,552 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 38 transitions [2019-12-27 19:26:10,580 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 170 states. [2019-12-27 19:26:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2019-12-27 19:26:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-27 19:26:10,590 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:26:10,591 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-27 19:26:10,591 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:26:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:26:10,599 INFO L82 PathProgramCache]: Analyzing trace with hash 257581824, now seen corresponding path program 1 times [2019-12-27 19:26:10,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:26:10,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886214025] [2019-12-27 19:26:10,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:26:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:26:10,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:26:10,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886214025] [2019-12-27 19:26:10,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:26:10,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:26:10,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [197203380] [2019-12-27 19:26:10,802 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:26:10,807 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:26:10,819 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 6 states and 5 transitions. [2019-12-27 19:26:10,819 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:26:10,822 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:26:10,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 19:26:10,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:26:10,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 19:26:10,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 19:26:10,835 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 2 states. [2019-12-27 19:26:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:26:10,850 INFO L93 Difference]: Finished difference Result 170 states and 390 transitions. [2019-12-27 19:26:10,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 19:26:10,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-12-27 19:26:10,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:26:10,866 INFO L225 Difference]: With dead ends: 170 [2019-12-27 19:26:10,866 INFO L226 Difference]: Without dead ends: 155 [2019-12-27 19:26:10,867 INFO L631 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 [2019-12-27 19:26:10,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2019-12-27 19:26:10,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2019-12-27 19:26:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2019-12-27 19:26:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 360 transitions. [2019-12-27 19:26:10,932 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 360 transitions. Word has length 5 [2019-12-27 19:26:10,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:26:10,932 INFO L462 AbstractCegarLoop]: Abstraction has 155 states and 360 transitions. [2019-12-27 19:26:10,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 19:26:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 360 transitions. [2019-12-27 19:26:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 19:26:10,934 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:26:10,934 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-27 19:26:10,934 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:26:10,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:26:10,935 INFO L82 PathProgramCache]: Analyzing trace with hash -604925666, now seen corresponding path program 1 times [2019-12-27 19:26:10,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:26:10,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059375953] [2019-12-27 19:26:10,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:26:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:26:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:26:10,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059375953] [2019-12-27 19:26:10,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:26:10,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:26:10,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1927447435] [2019-12-27 19:26:10,999 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:26:11,000 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:26:11,002 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 7 states and 6 transitions. [2019-12-27 19:26:11,005 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:26:11,005 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:26:11,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:26:11,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:26:11,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:26:11,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:26:11,008 INFO L87 Difference]: Start difference. First operand 155 states and 360 transitions. Second operand 3 states. [2019-12-27 19:26:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:26:11,057 INFO L93 Difference]: Finished difference Result 154 states and 341 transitions. [2019-12-27 19:26:11,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:26:11,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-27 19:26:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:26:11,062 INFO L225 Difference]: With dead ends: 154 [2019-12-27 19:26:11,062 INFO L226 Difference]: Without dead ends: 130 [2019-12-27 19:26:11,066 INFO L631 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 [2019-12-27 19:26:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-12-27 19:26:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2019-12-27 19:26:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-12-27 19:26:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 278 transitions. [2019-12-27 19:26:11,099 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 278 transitions. Word has length 6 [2019-12-27 19:26:11,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:26:11,099 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 278 transitions. [2019-12-27 19:26:11,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:26:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 278 transitions. [2019-12-27 19:26:11,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-27 19:26:11,100 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:26:11,100 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-27 19:26:11,101 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:26:11,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:26:11,102 INFO L82 PathProgramCache]: Analyzing trace with hash -604373151, now seen corresponding path program 1 times [2019-12-27 19:26:11,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:26:11,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377816506] [2019-12-27 19:26:11,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:26:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:26:11,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:26:11,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377816506] [2019-12-27 19:26:11,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:26:11,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 19:26:11,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1186265609] [2019-12-27 19:26:11,182 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:26:11,183 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:26:11,184 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 7 states and 6 transitions. [2019-12-27 19:26:11,186 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:26:11,186 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:26:11,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:26:11,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:26:11,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:26:11,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:26:11,187 INFO L87 Difference]: Start difference. First operand 122 states and 278 transitions. Second operand 3 states. [2019-12-27 19:26:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:26:11,217 INFO L93 Difference]: Finished difference Result 116 states and 257 transitions. [2019-12-27 19:26:11,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:26:11,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-27 19:26:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:26:11,220 INFO L225 Difference]: With dead ends: 116 [2019-12-27 19:26:11,220 INFO L226 Difference]: Without dead ends: 83 [2019-12-27 19:26:11,221 INFO L631 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 [2019-12-27 19:26:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-12-27 19:26:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-12-27 19:26:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-12-27 19:26:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 185 transitions. [2019-12-27 19:26:11,242 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 185 transitions. Word has length 6 [2019-12-27 19:26:11,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:26:11,242 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 185 transitions. [2019-12-27 19:26:11,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:26:11,242 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 185 transitions. [2019-12-27 19:26:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 19:26:11,243 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:26:11,244 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:26:11,245 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:26:11,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:26:11,245 INFO L82 PathProgramCache]: Analyzing trace with hash 342967710, now seen corresponding path program 1 times [2019-12-27 19:26:11,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:26:11,249 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284495372] [2019-12-27 19:26:11,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:26:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:26:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:26:11,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284495372] [2019-12-27 19:26:11,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:26:11,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:26:11,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2099768770] [2019-12-27 19:26:11,303 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:26:11,304 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:26:11,307 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 14 transitions. [2019-12-27 19:26:11,308 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:26:11,311 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1 times. [2019-12-27 19:26:11,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:26:11,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:26:11,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:26:11,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:26:11,313 INFO L87 Difference]: Start difference. First operand 83 states and 185 transitions. Second operand 3 states. [2019-12-27 19:26:11,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:26:11,341 INFO L93 Difference]: Finished difference Result 83 states and 180 transitions. [2019-12-27 19:26:11,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:26:11,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 19:26:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:26:11,342 INFO L225 Difference]: With dead ends: 83 [2019-12-27 19:26:11,342 INFO L226 Difference]: Without dead ends: 71 [2019-12-27 19:26:11,344 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:26:11,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-12-27 19:26:11,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-12-27 19:26:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-12-27 19:26:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 152 transitions. [2019-12-27 19:26:11,350 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 152 transitions. Word has length 9 [2019-12-27 19:26:11,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:26:11,351 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 152 transitions. [2019-12-27 19:26:11,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:26:11,351 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 152 transitions. [2019-12-27 19:26:11,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 19:26:11,352 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 19:26:11,352 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 19:26:11,352 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 19:26:11,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 19:26:11,353 INFO L82 PathProgramCache]: Analyzing trace with hash -321234212, now seen corresponding path program 1 times [2019-12-27 19:26:11,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 19:26:11,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316535244] [2019-12-27 19:26:11,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 19:26:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 19:26:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 19:26:11,394 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316535244] [2019-12-27 19:26:11,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 19:26:11,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 19:26:11,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1158822706] [2019-12-27 19:26:11,394 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 19:26:11,395 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 19:26:11,396 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 14 transitions. [2019-12-27 19:26:11,396 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 19:26:11,396 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 19:26:11,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 19:26:11,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 19:26:11,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 19:26:11,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 19:26:11,397 INFO L87 Difference]: Start difference. First operand 71 states and 152 transitions. Second operand 3 states. [2019-12-27 19:26:11,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 19:26:11,409 INFO L93 Difference]: Finished difference Result 50 states and 123 transitions. [2019-12-27 19:26:11,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 19:26:11,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 19:26:11,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 19:26:11,410 INFO L225 Difference]: With dead ends: 50 [2019-12-27 19:26:11,410 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 19:26:11,410 INFO L631 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 [2019-12-27 19:26:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 19:26:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 19:26:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 19:26:11,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 19:26:11,411 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-12-27 19:26:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 19:26:11,412 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 19:26:11,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 19:26:11,412 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 19:26:11,412 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 19:26:11,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 07:26:11 BasicIcfg [2019-12-27 19:26:11,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 19:26:11,419 INFO L168 Benchmark]: Toolchain (without parser) took 3080.45 ms. Allocated memory was 145.2 MB in the beginning and 235.9 MB in the end (delta: 90.7 MB). Free memory was 100.3 MB in the beginning and 116.0 MB in the end (delta: -15.7 MB). Peak memory consumption was 75.0 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:11,420 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-27 19:26:11,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.91 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 99.9 MB in the beginning and 163.3 MB in the end (delta: -63.5 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:11,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.64 ms. Allocated memory is still 203.4 MB. Free memory was 163.3 MB in the beginning and 161.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:11,423 INFO L168 Benchmark]: Boogie Preprocessor took 29.77 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 159.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:11,424 INFO L168 Benchmark]: RCFGBuilder took 458.60 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 140.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:11,425 INFO L168 Benchmark]: TraceAbstraction took 1856.49 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 140.0 MB in the beginning and 116.0 MB in the end (delta: 24.0 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. [2019-12-27 19:26:11,430 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.91 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 99.9 MB in the beginning and 163.3 MB in the end (delta: -63.5 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.64 ms. Allocated memory is still 203.4 MB. Free memory was 163.3 MB in the beginning and 161.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.77 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 159.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.60 ms. Allocated memory is still 203.4 MB. Free memory was 159.8 MB in the beginning and 140.0 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1856.49 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 140.0 MB in the beginning and 116.0 MB in the end (delta: 24.0 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 57 ProgramPointsBefore, 29 ProgramPointsAfterwards, 65 TransitionsBefore, 38 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 6 FixpointIterations, 10 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 636 VarBasedMoverChecksPositive, 27 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4161 CheckedPairsTotal, 33 TotalNumberOfCompositions - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 701]: 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, 54 locations, 2 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 173 SDtfs, 71 SDslu, 59 SDs, 0 SdLazy, 26 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred 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, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...