/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-ext/13_unverif.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 15:46:57,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 15:46:57,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 15:46:57,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 15:46:57,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 15:46:57,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 15:46:57,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 15:46:57,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 15:46:57,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 15:46:57,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 15:46:57,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 15:46:57,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 15:46:57,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 15:46:57,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 15:46:57,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 15:46:57,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 15:46:57,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 15:46:57,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 15:46:57,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 15:46:57,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 15:46:57,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 15:46:57,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 15:46:57,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 15:46:57,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 15:46:57,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 15:46:57,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 15:46:57,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 15:46:57,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 15:46:57,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 15:46:57,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 15:46:57,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 15:46:57,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 15:46:57,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 15:46:57,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 15:46:57,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 15:46:57,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 15:46:57,907 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-SemanticLbe.epf [2019-12-18 15:46:57,921 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 15:46:57,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 15:46:57,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 15:46:57,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 15:46:57,923 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 15:46:57,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 15:46:57,923 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 15:46:57,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 15:46:57,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 15:46:57,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 15:46:57,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 15:46:57,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 15:46:57,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 15:46:57,925 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 15:46:57,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 15:46:57,925 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 15:46:57,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 15:46:57,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 15:46:57,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 15:46:57,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 15:46:57,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 15:46:57,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 15:46:57,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 15:46:57,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 15:46:57,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 15:46:57,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 15:46:57,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 15:46:57,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 15:46:57,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 15:46:58,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 15:46:58,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 15:46:58,202 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 15:46:58,204 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 15:46:58,204 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 15:46:58,205 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/13_unverif.i [2019-12-18 15:46:58,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8705bfb73/16b571eead4d4e78be50a779611bb844/FLAG269551b61 [2019-12-18 15:46:58,779 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 15:46:58,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i [2019-12-18 15:46:58,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8705bfb73/16b571eead4d4e78be50a779611bb844/FLAG269551b61 [2019-12-18 15:46:59,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8705bfb73/16b571eead4d4e78be50a779611bb844 [2019-12-18 15:46:59,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 15:46:59,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 15:46:59,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 15:46:59,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 15:46:59,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 15:46:59,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:46:59" (1/1) ... [2019-12-18 15:46:59,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f372da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59, skipping insertion in model container [2019-12-18 15:46:59,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:46:59" (1/1) ... [2019-12-18 15:46:59,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 15:46:59,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 15:46:59,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 15:46:59,680 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 15:46:59,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 15:46:59,794 INFO L208 MainTranslator]: Completed translation [2019-12-18 15:46:59,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59 WrapperNode [2019-12-18 15:46:59,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 15:46:59,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 15:46:59,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 15:46:59,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 15:46:59,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59" (1/1) ... [2019-12-18 15:46:59,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59" (1/1) ... [2019-12-18 15:46:59,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 15:46:59,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 15:46:59,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 15:46:59,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 15:46:59,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59" (1/1) ... [2019-12-18 15:46:59,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59" (1/1) ... [2019-12-18 15:46:59,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59" (1/1) ... [2019-12-18 15:46:59,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59" (1/1) ... [2019-12-18 15:46:59,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59" (1/1) ... [2019-12-18 15:46:59,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59" (1/1) ... [2019-12-18 15:46:59,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59" (1/1) ... [2019-12-18 15:46:59,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 15:46:59,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 15:46:59,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 15:46:59,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 15:46:59,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59" (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 [2019-12-18 15:46:59,943 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-18 15:46:59,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-18 15:46:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 15:46:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 15:46:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 15:46:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 15:46:59,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 15:46:59,946 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 15:47:00,078 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_inc_r_returnLabel [2019-12-18 15:47:00,256 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 15:47:00,257 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-18 15:47:00,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:47:00 BoogieIcfgContainer [2019-12-18 15:47:00,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 15:47:00,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 15:47:00,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 15:47:00,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 15:47:00,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:46:59" (1/3) ... [2019-12-18 15:47:00,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8c52ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:47:00, skipping insertion in model container [2019-12-18 15:47:00,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:46:59" (2/3) ... [2019-12-18 15:47:00,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8c52ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:47:00, skipping insertion in model container [2019-12-18 15:47:00,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:47:00" (3/3) ... [2019-12-18 15:47:00,267 INFO L109 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2019-12-18 15:47:00,277 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 15:47:00,277 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 15:47:00,284 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 15:47:00,286 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 15:47:00,308 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,309 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,310 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,310 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,312 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,312 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,313 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,314 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,315 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,315 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,316 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,322 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,322 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,323 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,324 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,324 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:00,342 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-18 15:47:00,358 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:47:00,358 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:47:00,358 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:47:00,359 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:47:00,359 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:47:00,359 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:47:00,359 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:47:00,359 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:47:00,371 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 31 transitions [2019-12-18 15:47:00,373 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 31 places, 31 transitions [2019-12-18 15:47:00,402 INFO L126 PetriNetUnfolder]: 4/39 cut-off events. [2019-12-18 15:47:00,402 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:00,410 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 39 events. 4/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs. 5/37 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2019-12-18 15:47:00,414 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 31 places, 31 transitions [2019-12-18 15:47:00,426 INFO L126 PetriNetUnfolder]: 4/39 cut-off events. [2019-12-18 15:47:00,426 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:00,427 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 39 events. 4/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs. 5/37 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2019-12-18 15:47:00,429 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 240 [2019-12-18 15:47:00,430 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:47:01,111 INFO L206 etLargeBlockEncoding]: Checked pairs total: 169 [2019-12-18 15:47:01,111 INFO L214 etLargeBlockEncoding]: Total number of compositions: 27 [2019-12-18 15:47:01,115 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 10 places, 10 transitions [2019-12-18 15:47:01,124 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2019-12-18 15:47:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-18 15:47:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 15:47:01,133 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:01,134 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 15:47:01,134 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 15:47:01,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:01,140 INFO L82 PathProgramCache]: Analyzing trace with hash 144192241, now seen corresponding path program 1 times [2019-12-18 15:47:01,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:01,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876489491] [2019-12-18 15:47:01,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:47:01,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876489491] [2019-12-18 15:47:01,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:01,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:47:01,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273513418] [2019-12-18 15:47:01,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:47:01,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:01,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:47:01,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:01,421 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-12-18 15:47:01,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:01,458 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2019-12-18 15:47:01,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:47:01,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-18 15:47:01,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:01,470 INFO L225 Difference]: With dead ends: 23 [2019-12-18 15:47:01,470 INFO L226 Difference]: Without dead ends: 23 [2019-12-18 15:47:01,472 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:01,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-18 15:47:01,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-18 15:47:01,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-18 15:47:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2019-12-18 15:47:01,515 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2019-12-18 15:47:01,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:01,516 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2019-12-18 15:47:01,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:47:01,516 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2019-12-18 15:47:01,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 15:47:01,517 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:01,517 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-18 15:47:01,517 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 15:47:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:01,518 INFO L82 PathProgramCache]: Analyzing trace with hash 174992566, now seen corresponding path program 1 times [2019-12-18 15:47:01,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:01,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517419046] [2019-12-18 15:47:01,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:47:01,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517419046] [2019-12-18 15:47:01,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:01,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 15:47:01,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420719152] [2019-12-18 15:47:01,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 15:47:01,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:01,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 15:47:01,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 15:47:01,669 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand 3 states. [2019-12-18 15:47:01,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:01,692 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2019-12-18 15:47:01,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 15:47:01,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-18 15:47:01,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:01,695 INFO L225 Difference]: With dead ends: 19 [2019-12-18 15:47:01,695 INFO L226 Difference]: Without dead ends: 19 [2019-12-18 15:47:01,696 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 [2019-12-18 15:47:01,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-18 15:47:01,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2019-12-18 15:47:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-18 15:47:01,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2019-12-18 15:47:01,704 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 6 [2019-12-18 15:47:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:01,704 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2019-12-18 15:47:01,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 15:47:01,705 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2019-12-18 15:47:01,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 15:47:01,706 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:01,706 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-12-18 15:47:01,707 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 15:47:01,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:01,707 INFO L82 PathProgramCache]: Analyzing trace with hash 174947503, now seen corresponding path program 1 times [2019-12-18 15:47:01,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:01,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333152148] [2019-12-18 15:47:01,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:47:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:47:01,779 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 15:47:01,779 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 15:47:01,780 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 15:47:01,780 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-18 15:47:01,786 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,787 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,787 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,787 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,787 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,788 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,788 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,790 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,790 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,790 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,790 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,791 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,791 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,792 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,792 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,792 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,792 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,792 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,793 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,793 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,793 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,794 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,794 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,808 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,808 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,808 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,809 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,809 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:01,812 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 15:47:01,813 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:47:01,813 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:47:01,813 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:47:01,813 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:47:01,813 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:47:01,813 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:47:01,814 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:47:01,814 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:47:01,819 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 44 transitions [2019-12-18 15:47:01,819 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 44 transitions [2019-12-18 15:47:01,841 INFO L126 PetriNetUnfolder]: 7/61 cut-off events. [2019-12-18 15:47:01,841 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:01,845 INFO L76 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 7/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs. 14/63 useless extension candidates. Maximal degree in co-relation 40. Up to 6 conditions per place. [2019-12-18 15:47:01,849 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 44 transitions [2019-12-18 15:47:01,863 INFO L126 PetriNetUnfolder]: 7/61 cut-off events. [2019-12-18 15:47:01,865 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:01,866 INFO L76 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 7/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs. 14/63 useless extension candidates. Maximal degree in co-relation 40. Up to 6 conditions per place. [2019-12-18 15:47:01,868 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 792 [2019-12-18 15:47:01,868 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:47:02,583 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1434 [2019-12-18 15:47:02,584 INFO L214 etLargeBlockEncoding]: Total number of compositions: 29 [2019-12-18 15:47:02,584 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 20 transitions [2019-12-18 15:47:02,602 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 208 states. [2019-12-18 15:47:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2019-12-18 15:47:02,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 15:47:02,603 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:02,604 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:02,604 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:02,604 INFO L82 PathProgramCache]: Analyzing trace with hash 569025362, now seen corresponding path program 1 times [2019-12-18 15:47:02,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:02,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097478542] [2019-12-18 15:47:02,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:47:02,690 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097478542] [2019-12-18 15:47:02,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:02,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:02,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791415868] [2019-12-18 15:47:02,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:47:02,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:02,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:47:02,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:02,695 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 5 states. [2019-12-18 15:47:02,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:02,789 INFO L93 Difference]: Finished difference Result 251 states and 667 transitions. [2019-12-18 15:47:02,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:47:02,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 15:47:02,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:02,805 INFO L225 Difference]: With dead ends: 251 [2019-12-18 15:47:02,805 INFO L226 Difference]: Without dead ends: 251 [2019-12-18 15:47:02,809 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:02,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2019-12-18 15:47:02,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 211. [2019-12-18 15:47:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-12-18 15:47:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 561 transitions. [2019-12-18 15:47:02,868 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 561 transitions. Word has length 7 [2019-12-18 15:47:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:02,870 INFO L462 AbstractCegarLoop]: Abstraction has 211 states and 561 transitions. [2019-12-18 15:47:02,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:47:02,871 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 561 transitions. [2019-12-18 15:47:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:47:02,872 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:02,872 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2019-12-18 15:47:02,872 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:02,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:02,873 INFO L82 PathProgramCache]: Analyzing trace with hash 424323391, now seen corresponding path program 1 times [2019-12-18 15:47:02,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:02,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372170793] [2019-12-18 15:47:02,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:47:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:47:02,919 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 15:47:02,919 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 15:47:02,919 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 15:47:02,919 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-18 15:47:02,930 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,931 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,931 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,932 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,932 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,932 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,932 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,932 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,938 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,938 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,939 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,939 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,939 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,939 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,939 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,940 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,940 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,940 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,940 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,940 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,944 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,944 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,945 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,945 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,945 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,948 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,948 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,948 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,948 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,949 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,949 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,949 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,950 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,950 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,950 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,950 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,953 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,953 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,954 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,954 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,954 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,956 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,957 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,957 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,957 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,957 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:02,960 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-18 15:47:02,960 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:47:02,961 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:47:02,961 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:47:02,961 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:47:02,961 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:47:02,961 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:47:02,962 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:47:02,962 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:47:02,964 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 57 transitions [2019-12-18 15:47:02,969 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions [2019-12-18 15:47:02,993 INFO L126 PetriNetUnfolder]: 10/83 cut-off events. [2019-12-18 15:47:02,994 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:02,996 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 83 events. 10/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 195 event pairs. 27/93 useless extension candidates. Maximal degree in co-relation 65. Up to 8 conditions per place. [2019-12-18 15:47:03,003 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions [2019-12-18 15:47:03,028 INFO L126 PetriNetUnfolder]: 10/83 cut-off events. [2019-12-18 15:47:03,028 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:03,033 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 83 events. 10/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 195 event pairs. 27/93 useless extension candidates. Maximal degree in co-relation 65. Up to 8 conditions per place. [2019-12-18 15:47:03,037 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1656 [2019-12-18 15:47:03,037 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:47:03,779 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3648 [2019-12-18 15:47:03,780 INFO L214 etLargeBlockEncoding]: Total number of compositions: 38 [2019-12-18 15:47:03,780 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 28 transitions [2019-12-18 15:47:03,836 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1252 states. [2019-12-18 15:47:03,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states. [2019-12-18 15:47:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 15:47:03,837 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:03,838 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:03,838 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:03,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1782709548, now seen corresponding path program 1 times [2019-12-18 15:47:03,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:03,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100839258] [2019-12-18 15:47:03,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:47:03,913 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100839258] [2019-12-18 15:47:03,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:03,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:03,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330389536] [2019-12-18 15:47:03,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:47:03,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:03,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:47:03,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:03,914 INFO L87 Difference]: Start difference. First operand 1252 states. Second operand 5 states. [2019-12-18 15:47:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:04,021 INFO L93 Difference]: Finished difference Result 1547 states and 5625 transitions. [2019-12-18 15:47:04,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:47:04,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 15:47:04,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:04,040 INFO L225 Difference]: With dead ends: 1547 [2019-12-18 15:47:04,040 INFO L226 Difference]: Without dead ends: 1547 [2019-12-18 15:47:04,041 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:04,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2019-12-18 15:47:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1213. [2019-12-18 15:47:04,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2019-12-18 15:47:04,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 4426 transitions. [2019-12-18 15:47:04,130 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 4426 transitions. Word has length 7 [2019-12-18 15:47:04,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:04,130 INFO L462 AbstractCegarLoop]: Abstraction has 1213 states and 4426 transitions. [2019-12-18 15:47:04,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:47:04,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 4426 transitions. [2019-12-18 15:47:04,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:47:04,133 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:04,133 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:04,133 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:04,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:04,134 INFO L82 PathProgramCache]: Analyzing trace with hash 508067418, now seen corresponding path program 1 times [2019-12-18 15:47:04,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:04,135 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188972241] [2019-12-18 15:47:04,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:04,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:47:04,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188972241] [2019-12-18 15:47:04,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:04,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:04,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970781140] [2019-12-18 15:47:04,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:47:04,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:04,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:47:04,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:04,237 INFO L87 Difference]: Start difference. First operand 1213 states and 4426 transitions. Second operand 4 states. [2019-12-18 15:47:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:04,379 INFO L93 Difference]: Finished difference Result 1516 states and 5554 transitions. [2019-12-18 15:47:04,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:47:04,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 15:47:04,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:04,397 INFO L225 Difference]: With dead ends: 1516 [2019-12-18 15:47:04,397 INFO L226 Difference]: Without dead ends: 1516 [2019-12-18 15:47:04,398 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:04,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2019-12-18 15:47:04,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1241. [2019-12-18 15:47:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2019-12-18 15:47:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 4558 transitions. [2019-12-18 15:47:04,467 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 4558 transitions. Word has length 9 [2019-12-18 15:47:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:04,468 INFO L462 AbstractCegarLoop]: Abstraction has 1241 states and 4558 transitions. [2019-12-18 15:47:04,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:47:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 4558 transitions. [2019-12-18 15:47:04,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 15:47:04,469 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:04,469 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:04,469 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:04,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:04,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1404558460, now seen corresponding path program 1 times [2019-12-18 15:47:04,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:04,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401101116] [2019-12-18 15:47:04,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:04,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 15:47:04,602 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401101116] [2019-12-18 15:47:04,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:04,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:04,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591048359] [2019-12-18 15:47:04,603 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:47:04,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:04,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:47:04,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:04,604 INFO L87 Difference]: Start difference. First operand 1241 states and 4558 transitions. Second operand 5 states. [2019-12-18 15:47:04,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:04,680 INFO L93 Difference]: Finished difference Result 1685 states and 6153 transitions. [2019-12-18 15:47:04,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:47:04,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-18 15:47:04,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:04,697 INFO L225 Difference]: With dead ends: 1685 [2019-12-18 15:47:04,698 INFO L226 Difference]: Without dead ends: 1685 [2019-12-18 15:47:04,698 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:04,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2019-12-18 15:47:04,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1404. [2019-12-18 15:47:04,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2019-12-18 15:47:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5142 transitions. [2019-12-18 15:47:04,765 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5142 transitions. Word has length 10 [2019-12-18 15:47:04,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:04,766 INFO L462 AbstractCegarLoop]: Abstraction has 1404 states and 5142 transitions. [2019-12-18 15:47:04,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:47:04,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5142 transitions. [2019-12-18 15:47:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 15:47:04,772 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:04,772 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:04,773 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:04,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:04,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1160945276, now seen corresponding path program 1 times [2019-12-18 15:47:04,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:04,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329510765] [2019-12-18 15:47:04,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 15:47:04,867 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329510765] [2019-12-18 15:47:04,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:04,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:04,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718135662] [2019-12-18 15:47:04,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:47:04,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:04,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:47:04,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:04,870 INFO L87 Difference]: Start difference. First operand 1404 states and 5142 transitions. Second operand 4 states. [2019-12-18 15:47:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:04,975 INFO L93 Difference]: Finished difference Result 1785 states and 6555 transitions. [2019-12-18 15:47:04,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:47:04,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-18 15:47:04,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:04,991 INFO L225 Difference]: With dead ends: 1785 [2019-12-18 15:47:04,991 INFO L226 Difference]: Without dead ends: 1785 [2019-12-18 15:47:04,992 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:05,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2019-12-18 15:47:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1545. [2019-12-18 15:47:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2019-12-18 15:47:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 5692 transitions. [2019-12-18 15:47:05,057 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 5692 transitions. Word has length 12 [2019-12-18 15:47:05,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:05,057 INFO L462 AbstractCegarLoop]: Abstraction has 1545 states and 5692 transitions. [2019-12-18 15:47:05,057 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:47:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 5692 transitions. [2019-12-18 15:47:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 15:47:05,058 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:05,058 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2019-12-18 15:47:05,059 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:05,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:05,059 INFO L82 PathProgramCache]: Analyzing trace with hash -584245207, now seen corresponding path program 1 times [2019-12-18 15:47:05,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:05,059 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502214053] [2019-12-18 15:47:05,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:47:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:47:05,078 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 15:47:05,078 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 15:47:05,078 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 15:47:05,078 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-18 15:47:05,085 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,085 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,085 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,086 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,086 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,086 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,087 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,087 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,087 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,087 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,087 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,087 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,088 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,088 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,088 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,088 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,088 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,089 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,089 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,089 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,089 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,089 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,090 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,090 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,090 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,090 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,090 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,090 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,091 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,091 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,091 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,091 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,091 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,092 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,092 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,092 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,092 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,092 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,092 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,093 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,093 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,093 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,093 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,094 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,094 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,094 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,096 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,096 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,097 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,097 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,097 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,098 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,098 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,099 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,099 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,099 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,100 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,100 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,101 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,101 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,101 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:05,102 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-18 15:47:05,103 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:47:05,103 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:47:05,103 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:47:05,103 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:47:05,103 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:47:05,103 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:47:05,103 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:47:05,104 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:47:05,105 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 70 transitions [2019-12-18 15:47:05,105 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions [2019-12-18 15:47:05,120 INFO L126 PetriNetUnfolder]: 13/105 cut-off events. [2019-12-18 15:47:05,120 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:05,122 INFO L76 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 105 events. 13/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs. 44/127 useless extension candidates. Maximal degree in co-relation 92. Up to 10 conditions per place. [2019-12-18 15:47:05,127 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions [2019-12-18 15:47:05,139 INFO L126 PetriNetUnfolder]: 13/105 cut-off events. [2019-12-18 15:47:05,140 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:05,141 INFO L76 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 105 events. 13/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs. 44/127 useless extension candidates. Maximal degree in co-relation 92. Up to 10 conditions per place. [2019-12-18 15:47:05,146 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2019-12-18 15:47:05,146 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:47:06,088 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6531 [2019-12-18 15:47:06,088 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2019-12-18 15:47:06,088 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 37 transitions [2019-12-18 15:47:06,636 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7516 states. [2019-12-18 15:47:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states. [2019-12-18 15:47:06,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 15:47:06,637 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:06,637 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:06,638 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 15:47:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:06,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1253735484, now seen corresponding path program 1 times [2019-12-18 15:47:06,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:06,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387829491] [2019-12-18 15:47:06,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:47:06,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387829491] [2019-12-18 15:47:06,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:06,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:06,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587717067] [2019-12-18 15:47:06,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:47:06,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:06,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:47:06,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:06,702 INFO L87 Difference]: Start difference. First operand 7516 states. Second operand 5 states. [2019-12-18 15:47:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:06,970 INFO L93 Difference]: Finished difference Result 8945 states and 41357 transitions. [2019-12-18 15:47:06,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:47:06,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 15:47:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:07,053 INFO L225 Difference]: With dead ends: 8945 [2019-12-18 15:47:07,053 INFO L226 Difference]: Without dead ends: 8945 [2019-12-18 15:47:07,053 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:07,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8945 states. [2019-12-18 15:47:07,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8945 to 6943. [2019-12-18 15:47:07,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6943 states. [2019-12-18 15:47:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 32243 transitions. [2019-12-18 15:47:07,500 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 32243 transitions. Word has length 7 [2019-12-18 15:47:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:07,501 INFO L462 AbstractCegarLoop]: Abstraction has 6943 states and 32243 transitions. [2019-12-18 15:47:07,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:47:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 32243 transitions. [2019-12-18 15:47:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:47:07,501 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:07,501 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:07,502 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 15:47:07,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:07,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2045994371, now seen corresponding path program 1 times [2019-12-18 15:47:07,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:07,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840159253] [2019-12-18 15:47:07,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:47:07,544 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840159253] [2019-12-18 15:47:07,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:07,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:07,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254856875] [2019-12-18 15:47:07,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:47:07,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:07,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:47:07,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:07,546 INFO L87 Difference]: Start difference. First operand 6943 states and 32243 transitions. Second operand 4 states. [2019-12-18 15:47:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:07,738 INFO L93 Difference]: Finished difference Result 9334 states and 43415 transitions. [2019-12-18 15:47:07,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:47:07,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 15:47:07,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:07,789 INFO L225 Difference]: With dead ends: 9334 [2019-12-18 15:47:07,789 INFO L226 Difference]: Without dead ends: 9334 [2019-12-18 15:47:07,790 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:08,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9334 states. [2019-12-18 15:47:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9334 to 7850. [2019-12-18 15:47:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7850 states. [2019-12-18 15:47:08,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 36573 transitions. [2019-12-18 15:47:08,846 INFO L78 Accepts]: Start accepts. Automaton has 7850 states and 36573 transitions. Word has length 9 [2019-12-18 15:47:08,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:08,846 INFO L462 AbstractCegarLoop]: Abstraction has 7850 states and 36573 transitions. [2019-12-18 15:47:08,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:47:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states and 36573 transitions. [2019-12-18 15:47:08,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 15:47:08,846 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:08,847 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:08,847 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 15:47:08,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:08,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1685612685, now seen corresponding path program 1 times [2019-12-18 15:47:08,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:08,847 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849770938] [2019-12-18 15:47:08,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 15:47:08,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849770938] [2019-12-18 15:47:08,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:08,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:08,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946439636] [2019-12-18 15:47:08,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:47:08,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:08,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:47:08,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:08,896 INFO L87 Difference]: Start difference. First operand 7850 states and 36573 transitions. Second operand 5 states. [2019-12-18 15:47:09,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:09,042 INFO L93 Difference]: Finished difference Result 10343 states and 47933 transitions. [2019-12-18 15:47:09,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:47:09,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-18 15:47:09,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:09,087 INFO L225 Difference]: With dead ends: 10343 [2019-12-18 15:47:09,087 INFO L226 Difference]: Without dead ends: 10343 [2019-12-18 15:47:09,088 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:09,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10343 states. [2019-12-18 15:47:09,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10343 to 8547. [2019-12-18 15:47:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8547 states. [2019-12-18 15:47:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8547 states to 8547 states and 39726 transitions. [2019-12-18 15:47:09,577 INFO L78 Accepts]: Start accepts. Automaton has 8547 states and 39726 transitions. Word has length 10 [2019-12-18 15:47:09,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:09,577 INFO L462 AbstractCegarLoop]: Abstraction has 8547 states and 39726 transitions. [2019-12-18 15:47:09,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:47:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 8547 states and 39726 transitions. [2019-12-18 15:47:09,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 15:47:09,578 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:09,578 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:09,579 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 15:47:09,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:09,579 INFO L82 PathProgramCache]: Analyzing trace with hash -671121541, now seen corresponding path program 1 times [2019-12-18 15:47:09,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:09,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701658489] [2019-12-18 15:47:09,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 15:47:09,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701658489] [2019-12-18 15:47:09,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:09,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:09,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849896499] [2019-12-18 15:47:09,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:47:09,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:09,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:47:09,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:09,635 INFO L87 Difference]: Start difference. First operand 8547 states and 39726 transitions. Second operand 4 states. [2019-12-18 15:47:09,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:09,815 INFO L93 Difference]: Finished difference Result 11574 states and 53865 transitions. [2019-12-18 15:47:09,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:47:09,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-18 15:47:09,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:10,036 INFO L225 Difference]: With dead ends: 11574 [2019-12-18 15:47:10,037 INFO L226 Difference]: Without dead ends: 11574 [2019-12-18 15:47:10,037 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11574 states. [2019-12-18 15:47:10,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11574 to 10068. [2019-12-18 15:47:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10068 states. [2019-12-18 15:47:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 46954 transitions. [2019-12-18 15:47:10,403 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 46954 transitions. Word has length 12 [2019-12-18 15:47:10,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:10,404 INFO L462 AbstractCegarLoop]: Abstraction has 10068 states and 46954 transitions. [2019-12-18 15:47:10,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:47:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 46954 transitions. [2019-12-18 15:47:10,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 15:47:10,405 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:10,405 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:10,405 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 15:47:10,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:10,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1258447422, now seen corresponding path program 1 times [2019-12-18 15:47:10,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:10,406 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371366848] [2019-12-18 15:47:10,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-18 15:47:10,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371366848] [2019-12-18 15:47:10,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:10,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:10,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586997113] [2019-12-18 15:47:10,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:47:10,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:10,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:47:10,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:10,467 INFO L87 Difference]: Start difference. First operand 10068 states and 46954 transitions. Second operand 5 states. [2019-12-18 15:47:10,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:10,623 INFO L93 Difference]: Finished difference Result 12128 states and 56330 transitions. [2019-12-18 15:47:10,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:47:10,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-18 15:47:10,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:10,873 INFO L225 Difference]: With dead ends: 12128 [2019-12-18 15:47:10,874 INFO L226 Difference]: Without dead ends: 12128 [2019-12-18 15:47:10,874 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:10,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12128 states. [2019-12-18 15:47:11,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12128 to 10579. [2019-12-18 15:47:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10579 states. [2019-12-18 15:47:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10579 states to 10579 states and 49194 transitions. [2019-12-18 15:47:11,303 INFO L78 Accepts]: Start accepts. Automaton has 10579 states and 49194 transitions. Word has length 13 [2019-12-18 15:47:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:11,304 INFO L462 AbstractCegarLoop]: Abstraction has 10579 states and 49194 transitions. [2019-12-18 15:47:11,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:47:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10579 states and 49194 transitions. [2019-12-18 15:47:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 15:47:11,306 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:11,306 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:11,307 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 15:47:11,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:11,307 INFO L82 PathProgramCache]: Analyzing trace with hash -572546880, now seen corresponding path program 1 times [2019-12-18 15:47:11,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:11,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158896155] [2019-12-18 15:47:11,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:11,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 15:47:11,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158896155] [2019-12-18 15:47:11,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:11,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 15:47:11,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995925769] [2019-12-18 15:47:11,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:47:11,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:11,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:47:11,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:11,379 INFO L87 Difference]: Start difference. First operand 10579 states and 49194 transitions. Second operand 5 states. [2019-12-18 15:47:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:11,487 INFO L93 Difference]: Finished difference Result 2356 states and 8479 transitions. [2019-12-18 15:47:11,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:47:11,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-18 15:47:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:11,498 INFO L225 Difference]: With dead ends: 2356 [2019-12-18 15:47:11,498 INFO L226 Difference]: Without dead ends: 2356 [2019-12-18 15:47:11,499 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2019-12-18 15:47:11,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1991. [2019-12-18 15:47:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2019-12-18 15:47:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 7107 transitions. [2019-12-18 15:47:11,572 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 7107 transitions. Word has length 13 [2019-12-18 15:47:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:11,572 INFO L462 AbstractCegarLoop]: Abstraction has 1991 states and 7107 transitions. [2019-12-18 15:47:11,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:47:11,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 7107 transitions. [2019-12-18 15:47:11,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 15:47:11,574 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:11,575 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:11,575 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 15:47:11,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:11,575 INFO L82 PathProgramCache]: Analyzing trace with hash -441088886, now seen corresponding path program 1 times [2019-12-18 15:47:11,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:11,576 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404999682] [2019-12-18 15:47:11,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:47:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:47:11,616 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 15:47:11,617 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 15:47:11,617 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 15:47:11,617 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-18 15:47:11,630 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,630 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,630 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,631 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,631 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,631 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,631 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,633 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,633 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,633 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,633 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,634 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,634 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,634 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,634 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,635 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,635 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,635 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,635 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,636 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,636 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,636 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,637 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,637 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,637 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,638 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,638 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,638 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,638 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,639 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,639 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,639 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,639 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,639 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,640 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,640 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,641 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,641 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,641 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,641 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,642 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,642 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,642 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,643 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,643 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,643 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,643 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,644 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,644 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,644 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,644 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,645 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,645 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,645 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,646 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,646 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,648 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,648 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,649 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,651 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,651 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,653 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,653 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,654 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,654 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,654 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,656 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,656 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,657 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,657 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,657 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,659 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,659 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,660 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,660 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,660 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:11,662 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-18 15:47:11,663 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:47:11,663 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:47:11,663 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:47:11,663 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:47:11,663 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:47:11,663 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:47:11,664 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:47:11,664 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:47:11,665 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 83 transitions [2019-12-18 15:47:11,667 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions [2019-12-18 15:47:11,694 INFO L126 PetriNetUnfolder]: 16/127 cut-off events. [2019-12-18 15:47:11,695 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:11,699 INFO L76 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 127 events. 16/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs. 65/165 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2019-12-18 15:47:11,710 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions [2019-12-18 15:47:11,933 INFO L126 PetriNetUnfolder]: 16/127 cut-off events. [2019-12-18 15:47:11,934 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:11,937 INFO L76 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 127 events. 16/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs. 65/165 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2019-12-18 15:47:11,945 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4320 [2019-12-18 15:47:11,945 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:47:12,966 INFO L206 etLargeBlockEncoding]: Checked pairs total: 8881 [2019-12-18 15:47:12,966 INFO L214 etLargeBlockEncoding]: Total number of compositions: 55 [2019-12-18 15:47:12,967 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 43 transitions [2019-12-18 15:47:19,472 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 45100 states. [2019-12-18 15:47:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states. [2019-12-18 15:47:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 15:47:19,473 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:19,473 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:19,473 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:19,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:19,473 INFO L82 PathProgramCache]: Analyzing trace with hash 726122603, now seen corresponding path program 1 times [2019-12-18 15:47:19,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:19,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867706501] [2019-12-18 15:47:19,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:47:19,510 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867706501] [2019-12-18 15:47:19,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:19,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:19,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437518901] [2019-12-18 15:47:19,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:47:19,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:19,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:47:19,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:19,512 INFO L87 Difference]: Start difference. First operand 45100 states. Second operand 5 states. [2019-12-18 15:47:21,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:21,025 INFO L93 Difference]: Finished difference Result 50507 states and 283723 transitions. [2019-12-18 15:47:21,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:47:21,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 15:47:21,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:21,210 INFO L225 Difference]: With dead ends: 50507 [2019-12-18 15:47:21,210 INFO L226 Difference]: Without dead ends: 50507 [2019-12-18 15:47:21,211 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50507 states. [2019-12-18 15:47:24,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50507 to 39997. [2019-12-18 15:47:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39997 states. [2019-12-18 15:47:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39997 states to 39997 states and 225588 transitions. [2019-12-18 15:47:25,094 INFO L78 Accepts]: Start accepts. Automaton has 39997 states and 225588 transitions. Word has length 7 [2019-12-18 15:47:25,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:25,094 INFO L462 AbstractCegarLoop]: Abstraction has 39997 states and 225588 transitions. [2019-12-18 15:47:25,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:47:25,094 INFO L276 IsEmpty]: Start isEmpty. Operand 39997 states and 225588 transitions. [2019-12-18 15:47:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 15:47:25,094 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:25,095 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:25,095 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:25,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:25,095 INFO L82 PathProgramCache]: Analyzing trace with hash 2019106765, now seen corresponding path program 1 times [2019-12-18 15:47:25,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:25,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317286360] [2019-12-18 15:47:25,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:47:25,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317286360] [2019-12-18 15:47:25,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:25,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:25,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487529308] [2019-12-18 15:47:25,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:47:25,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:25,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:47:25,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:25,138 INFO L87 Difference]: Start difference. First operand 39997 states and 225588 transitions. Second operand 4 states. [2019-12-18 15:47:25,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:25,634 INFO L93 Difference]: Finished difference Result 56104 states and 316572 transitions. [2019-12-18 15:47:25,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:47:25,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 15:47:25,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:25,848 INFO L225 Difference]: With dead ends: 56104 [2019-12-18 15:47:25,848 INFO L226 Difference]: Without dead ends: 56104 [2019-12-18 15:47:25,849 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:29,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56104 states. [2019-12-18 15:47:30,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56104 to 48029. [2019-12-18 15:47:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48029 states. [2019-12-18 15:47:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48029 states to 48029 states and 271277 transitions. [2019-12-18 15:47:30,309 INFO L78 Accepts]: Start accepts. Automaton has 48029 states and 271277 transitions. Word has length 9 [2019-12-18 15:47:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:30,309 INFO L462 AbstractCegarLoop]: Abstraction has 48029 states and 271277 transitions. [2019-12-18 15:47:30,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:47:30,310 INFO L276 IsEmpty]: Start isEmpty. Operand 48029 states and 271277 transitions. [2019-12-18 15:47:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 15:47:30,310 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:30,310 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:30,310 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:30,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:30,311 INFO L82 PathProgramCache]: Analyzing trace with hash 112098818, now seen corresponding path program 1 times [2019-12-18 15:47:30,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:30,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883524294] [2019-12-18 15:47:30,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 15:47:30,358 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883524294] [2019-12-18 15:47:30,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:30,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:30,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546243046] [2019-12-18 15:47:30,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:47:30,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:30,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:47:30,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:30,360 INFO L87 Difference]: Start difference. First operand 48029 states and 271277 transitions. Second operand 5 states. [2019-12-18 15:47:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:33,559 INFO L93 Difference]: Finished difference Result 60653 states and 341167 transitions. [2019-12-18 15:47:33,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:47:33,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-18 15:47:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:33,803 INFO L225 Difference]: With dead ends: 60653 [2019-12-18 15:47:33,803 INFO L226 Difference]: Without dead ends: 60653 [2019-12-18 15:47:33,804 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:34,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60653 states. [2019-12-18 15:47:35,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60653 to 50928. [2019-12-18 15:47:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50928 states. [2019-12-18 15:47:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50928 states to 50928 states and 287199 transitions. [2019-12-18 15:47:35,684 INFO L78 Accepts]: Start accepts. Automaton has 50928 states and 287199 transitions. Word has length 10 [2019-12-18 15:47:35,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:35,685 INFO L462 AbstractCegarLoop]: Abstraction has 50928 states and 287199 transitions. [2019-12-18 15:47:35,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:47:35,685 INFO L276 IsEmpty]: Start isEmpty. Operand 50928 states and 287199 transitions. [2019-12-18 15:47:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 15:47:35,686 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:35,686 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:35,686 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:35,686 INFO L82 PathProgramCache]: Analyzing trace with hash 352805076, now seen corresponding path program 1 times [2019-12-18 15:47:35,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:35,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640840709] [2019-12-18 15:47:35,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 15:47:35,728 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640840709] [2019-12-18 15:47:35,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:35,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:35,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725967200] [2019-12-18 15:47:35,729 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:47:35,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:35,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:47:35,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:35,730 INFO L87 Difference]: Start difference. First operand 50928 states and 287199 transitions. Second operand 4 states. [2019-12-18 15:47:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:36,862 INFO L93 Difference]: Finished difference Result 71415 states and 402930 transitions. [2019-12-18 15:47:36,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:47:36,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-18 15:47:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:37,137 INFO L225 Difference]: With dead ends: 71415 [2019-12-18 15:47:37,137 INFO L226 Difference]: Without dead ends: 71415 [2019-12-18 15:47:37,138 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71415 states. [2019-12-18 15:47:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71415 to 62439. [2019-12-18 15:47:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62439 states. [2019-12-18 15:47:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62439 states to 62439 states and 352729 transitions. [2019-12-18 15:47:43,288 INFO L78 Accepts]: Start accepts. Automaton has 62439 states and 352729 transitions. Word has length 12 [2019-12-18 15:47:43,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:43,288 INFO L462 AbstractCegarLoop]: Abstraction has 62439 states and 352729 transitions. [2019-12-18 15:47:43,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:47:43,288 INFO L276 IsEmpty]: Start isEmpty. Operand 62439 states and 352729 transitions. [2019-12-18 15:47:43,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 15:47:43,289 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:43,289 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:43,289 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:43,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:43,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2145715478, now seen corresponding path program 1 times [2019-12-18 15:47:43,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:43,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187476326] [2019-12-18 15:47:43,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:47:43,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187476326] [2019-12-18 15:47:43,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567075332] [2019-12-18 15:47:43,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:47:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:43,434 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-18 15:47:43,436 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 15:47:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:47:43,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 15:47:43,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2019-12-18 15:47:43,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886233801] [2019-12-18 15:47:43,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-18 15:47:43,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:43,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-18 15:47:43,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-18 15:47:43,523 INFO L87 Difference]: Start difference. First operand 62439 states and 352729 transitions. Second operand 9 states. [2019-12-18 15:47:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:44,039 INFO L93 Difference]: Finished difference Result 8460 states and 36312 transitions. [2019-12-18 15:47:44,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-18 15:47:44,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-12-18 15:47:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:44,075 INFO L225 Difference]: With dead ends: 8460 [2019-12-18 15:47:44,075 INFO L226 Difference]: Without dead ends: 8460 [2019-12-18 15:47:44,076 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-18 15:47:44,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8460 states. [2019-12-18 15:47:44,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8460 to 6538. [2019-12-18 15:47:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6538 states. [2019-12-18 15:47:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 27580 transitions. [2019-12-18 15:47:44,323 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 27580 transitions. Word has length 13 [2019-12-18 15:47:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:44,324 INFO L462 AbstractCegarLoop]: Abstraction has 6538 states and 27580 transitions. [2019-12-18 15:47:44,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-18 15:47:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 27580 transitions. [2019-12-18 15:47:44,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 15:47:44,327 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:44,327 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:44,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 15:47:44,532 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:44,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:44,532 INFO L82 PathProgramCache]: Analyzing trace with hash 33841388, now seen corresponding path program 1 times [2019-12-18 15:47:44,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:44,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010544588] [2019-12-18 15:47:44,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-18 15:47:44,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010544588] [2019-12-18 15:47:44,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:44,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:44,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027806708] [2019-12-18 15:47:44,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:47:44,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:44,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:47:44,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:44,603 INFO L87 Difference]: Start difference. First operand 6538 states and 27580 transitions. Second operand 5 states. [2019-12-18 15:47:44,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:44,742 INFO L93 Difference]: Finished difference Result 11626 states and 49057 transitions. [2019-12-18 15:47:44,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:47:44,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-18 15:47:44,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:45,326 INFO L225 Difference]: With dead ends: 11626 [2019-12-18 15:47:45,326 INFO L226 Difference]: Without dead ends: 11626 [2019-12-18 15:47:45,326 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:45,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11626 states. [2019-12-18 15:47:45,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11626 to 7402. [2019-12-18 15:47:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7402 states. [2019-12-18 15:47:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 31270 transitions. [2019-12-18 15:47:45,498 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 31270 transitions. Word has length 13 [2019-12-18 15:47:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:45,498 INFO L462 AbstractCegarLoop]: Abstraction has 7402 states and 31270 transitions. [2019-12-18 15:47:45,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:47:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 31270 transitions. [2019-12-18 15:47:45,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 15:47:45,500 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:45,500 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:45,500 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:45,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1838131737, now seen corresponding path program 1 times [2019-12-18 15:47:45,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:45,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459873758] [2019-12-18 15:47:45,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-18 15:47:45,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459873758] [2019-12-18 15:47:45,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:45,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:45,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833617116] [2019-12-18 15:47:45,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 15:47:45,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:45,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 15:47:45,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:45,557 INFO L87 Difference]: Start difference. First operand 7402 states and 31270 transitions. Second operand 4 states. [2019-12-18 15:47:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:45,647 INFO L93 Difference]: Finished difference Result 6970 states and 29425 transitions. [2019-12-18 15:47:45,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 15:47:45,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-18 15:47:45,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:45,673 INFO L225 Difference]: With dead ends: 6970 [2019-12-18 15:47:45,673 INFO L226 Difference]: Without dead ends: 6970 [2019-12-18 15:47:45,674 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 15:47:45,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6970 states. [2019-12-18 15:47:45,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6970 to 6106. [2019-12-18 15:47:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6106 states. [2019-12-18 15:47:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 25735 transitions. [2019-12-18 15:47:45,824 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 25735 transitions. Word has length 15 [2019-12-18 15:47:45,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:45,824 INFO L462 AbstractCegarLoop]: Abstraction has 6106 states and 25735 transitions. [2019-12-18 15:47:45,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 15:47:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 25735 transitions. [2019-12-18 15:47:45,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 15:47:45,827 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:45,827 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:45,827 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:45,828 INFO L82 PathProgramCache]: Analyzing trace with hash 727939589, now seen corresponding path program 1 times [2019-12-18 15:47:45,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:45,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121105653] [2019-12-18 15:47:45,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:47:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-18 15:47:45,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121105653] [2019-12-18 15:47:45,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:47:45,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:47:45,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699830860] [2019-12-18 15:47:45,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:47:45,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:47:45,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:47:45,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:45,887 INFO L87 Difference]: Start difference. First operand 6106 states and 25735 transitions. Second operand 5 states. [2019-12-18 15:47:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:47:46,035 INFO L93 Difference]: Finished difference Result 10825 states and 45769 transitions. [2019-12-18 15:47:46,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:47:46,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-12-18 15:47:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:47:46,073 INFO L225 Difference]: With dead ends: 10825 [2019-12-18 15:47:46,074 INFO L226 Difference]: Without dead ends: 10825 [2019-12-18 15:47:46,074 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:47:46,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2019-12-18 15:47:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 6916. [2019-12-18 15:47:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6916 states. [2019-12-18 15:47:46,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6916 states to 6916 states and 29245 transitions. [2019-12-18 15:47:46,246 INFO L78 Accepts]: Start accepts. Automaton has 6916 states and 29245 transitions. Word has length 16 [2019-12-18 15:47:46,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 15:47:46,247 INFO L462 AbstractCegarLoop]: Abstraction has 6916 states and 29245 transitions. [2019-12-18 15:47:46,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 15:47:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 6916 states and 29245 transitions. [2019-12-18 15:47:46,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-18 15:47:46,251 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:47:46,251 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:47:46,251 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:47:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:47:46,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1525432798, now seen corresponding path program 1 times [2019-12-18 15:47:46,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:47:46,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126156900] [2019-12-18 15:47:46,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:47:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:47:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 15:47:46,268 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 15:47:46,268 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 15:47:46,268 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 15:47:46,268 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-18 15:47:46,278 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,278 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,278 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,278 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,278 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,279 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,279 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,279 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,279 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,279 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,279 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,280 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,280 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,280 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,280 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,280 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,280 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,280 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,281 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,281 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,281 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,281 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,281 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,281 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,281 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,282 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,282 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,282 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,282 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,282 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,282 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,282 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,283 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,283 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,283 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,283 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,283 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,283 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,284 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,284 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,284 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,284 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,284 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,284 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,284 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,285 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,285 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,285 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,285 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,285 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,285 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,285 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,286 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,286 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,286 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,286 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,286 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,286 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,287 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,287 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,287 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,287 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,287 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,287 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,287 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,288 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,288 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,288 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,288 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,288 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,288 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,290 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,290 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,290 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,290 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,291 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,292 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,292 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,292 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,292 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,292 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,294 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,294 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,294 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,294 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,294 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,296 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,296 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,296 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,296 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,296 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,298 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,298 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,299 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,299 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,299 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 15:47:46,301 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-18 15:47:46,301 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 15:47:46,301 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 15:47:46,301 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 15:47:46,301 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 15:47:46,301 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 15:47:46,301 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 15:47:46,302 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 15:47:46,302 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 15:47:46,303 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 96 transitions [2019-12-18 15:47:46,303 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions [2019-12-18 15:47:46,322 INFO L126 PetriNetUnfolder]: 19/149 cut-off events. [2019-12-18 15:47:46,322 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:46,326 INFO L76 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 149 events. 19/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 421 event pairs. 90/207 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2019-12-18 15:47:46,337 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions [2019-12-18 15:47:46,355 INFO L126 PetriNetUnfolder]: 19/149 cut-off events. [2019-12-18 15:47:46,355 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 15:47:46,359 INFO L76 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 149 events. 19/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 421 event pairs. 90/207 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2019-12-18 15:47:46,371 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6120 [2019-12-18 15:47:46,371 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 15:47:47,730 INFO L206 etLargeBlockEncoding]: Checked pairs total: 13093 [2019-12-18 15:47:47,730 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2019-12-18 15:47:47,731 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 52 transitions [2019-12-18 15:50:48,939 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 270604 states. [2019-12-18 15:50:48,940 INFO L276 IsEmpty]: Start isEmpty. Operand 270604 states. [2019-12-18 15:50:48,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 15:50:48,940 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 15:50:48,940 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 15:50:48,940 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 15:50:48,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 15:50:48,941 INFO L82 PathProgramCache]: Analyzing trace with hash 604056706, now seen corresponding path program 1 times [2019-12-18 15:50:48,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 15:50:48,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317776582] [2019-12-18 15:50:48,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 15:50:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 15:50:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 15:50:48,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317776582] [2019-12-18 15:50:48,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 15:50:48,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 15:50:48,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902174693] [2019-12-18 15:50:48,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 15:50:48,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 15:50:48,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 15:50:48,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 15:50:48,986 INFO L87 Difference]: Start difference. First operand 270604 states. Second operand 5 states. [2019-12-18 15:50:58,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 15:50:58,527 INFO L93 Difference]: Finished difference Result 283913 states and 1878243 transitions. [2019-12-18 15:50:58,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 15:50:58,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 15:50:58,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 15:51:01,377 INFO L225 Difference]: With dead ends: 283913 [2019-12-18 15:51:01,378 INFO L226 Difference]: Without dead ends: 283913 [2019-12-18 15:51:01,378 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown