/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/13_unverif.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 12:10:50,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 12:10:50,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 12:10:50,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 12:10:50,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 12:10:50,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 12:10:50,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 12:10:50,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 12:10:50,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 12:10:50,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 12:10:50,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 12:10:50,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 12:10:50,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 12:10:50,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 12:10:50,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 12:10:50,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 12:10:50,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 12:10:50,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 12:10:50,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 12:10:50,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 12:10:50,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 12:10:50,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 12:10:50,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 12:10:50,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 12:10:50,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-11 12:10:50,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 12:10:50,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 12:10:50,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 12:10:50,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 12:10:50,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 12:10:50,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 12:10:50,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 12:10:50,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 12:10:50,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 12:10:50,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 12:10:50,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 12:10:50,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 12:10:51,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 12:10:51,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 12:10:51,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 12:10:51,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 12:10:51,036 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 12:10:51,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 12:10:51,036 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 12:10:51,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 12:10:51,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 12:10:51,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 12:10:51,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 12:10:51,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 12:10:51,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 12:10:51,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 12:10:51,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 12:10:51,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 12:10:51,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 12:10:51,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 12:10:51,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 12:10:51,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 12:10:51,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 12:10:51,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 12:10:51,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 12:10:51,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 12:10:51,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 12:10:51,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 12:10:51,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 12:10:51,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 12:10:51,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 12:10:51,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 12:10:51,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 12:10:51,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 12:10:51,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 12:10:51,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 12:10:51,524 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 12:10:51,525 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-09-11 12:10:51,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f6dcac4e/9e0640a162ce4b6fbda30ff7c14c5a7e/FLAG0714d3cad [2020-09-11 12:10:52,200 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 12:10:52,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-09-11 12:10:52,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f6dcac4e/9e0640a162ce4b6fbda30ff7c14c5a7e/FLAG0714d3cad [2020-09-11 12:10:52,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f6dcac4e/9e0640a162ce4b6fbda30ff7c14c5a7e [2020-09-11 12:10:52,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 12:10:52,483 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 12:10:52,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 12:10:52,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 12:10:52,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 12:10:52,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 12:10:52" (1/1) ... [2020-09-11 12:10:52,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db515e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:52, skipping insertion in model container [2020-09-11 12:10:52,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 12:10:52" (1/1) ... [2020-09-11 12:10:52,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 12:10:52,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 12:10:53,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 12:10:53,111 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 12:10:53,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 12:10:53,235 INFO L208 MainTranslator]: Completed translation [2020-09-11 12:10:53,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53 WrapperNode [2020-09-11 12:10:53,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 12:10:53,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 12:10:53,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 12:10:53,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 12:10:53,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53" (1/1) ... [2020-09-11 12:10:53,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53" (1/1) ... [2020-09-11 12:10:53,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 12:10:53,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 12:10:53,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 12:10:53,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 12:10:53,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53" (1/1) ... [2020-09-11 12:10:53,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53" (1/1) ... [2020-09-11 12:10:53,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53" (1/1) ... [2020-09-11 12:10:53,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53" (1/1) ... [2020-09-11 12:10:53,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53" (1/1) ... [2020-09-11 12:10:53,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53" (1/1) ... [2020-09-11 12:10:53,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53" (1/1) ... [2020-09-11 12:10:53,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 12:10:53,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 12:10:53,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 12:10:53,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 12:10:53,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 12:10:53,411 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-11 12:10:53,412 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-11 12:10:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 12:10:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 12:10:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 12:10:53,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 12:10:53,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 12:10:53,415 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 12:10:53,786 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 12:10:53,786 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-11 12:10:53,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 12:10:53 BoogieIcfgContainer [2020-09-11 12:10:53,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 12:10:53,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 12:10:53,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 12:10:53,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 12:10:53,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 12:10:52" (1/3) ... [2020-09-11 12:10:53,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f40c5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 12:10:53, skipping insertion in model container [2020-09-11 12:10:53,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 12:10:53" (2/3) ... [2020-09-11 12:10:53,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f40c5d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 12:10:53, skipping insertion in model container [2020-09-11 12:10:53,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 12:10:53" (3/3) ... [2020-09-11 12:10:53,802 INFO L109 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2020-09-11 12:10:53,815 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 12:10:53,816 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 12:10:53,826 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 12:10:53,827 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 12:10:53,853 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,853 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,854 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,855 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,855 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,857 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,865 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,865 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,865 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,865 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:53,890 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-11 12:10:53,914 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 12:10:53,914 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 12:10:53,914 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 12:10:53,915 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 12:10:53,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 12:10:53,915 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 12:10:53,915 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 12:10:53,915 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 12:10:53,930 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 32 transitions, 69 flow [2020-09-11 12:10:53,932 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-09-11 12:10:53,969 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-09-11 12:10:53,969 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 12:10:53,975 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 4/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-09-11 12:10:53,978 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-09-11 12:10:53,999 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-09-11 12:10:54,000 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 12:10:54,001 INFO L80 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 4/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2020-09-11 12:10:54,002 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 260 [2020-09-11 12:10:54,004 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 12:10:54,783 INFO L206 etLargeBlockEncoding]: Checked pairs total: 174 [2020-09-11 12:10:54,783 INFO L214 etLargeBlockEncoding]: Total number of compositions: 27 [2020-09-11 12:10:54,788 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 10 transitions, 25 flow [2020-09-11 12:10:54,800 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2020-09-11 12:10:54,803 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-11 12:10:54,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-09-11 12:10:54,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:10:54,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-09-11 12:10:54,814 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 12:10:54,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:10:54,823 INFO L82 PathProgramCache]: Analyzing trace with hash 174998047, now seen corresponding path program 1 times [2020-09-11 12:10:54,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:10:54,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192101134] [2020-09-11 12:10:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:10:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:10:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:10:55,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192101134] [2020-09-11 12:10:55,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:10:55,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 12:10:55,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861203001] [2020-09-11 12:10:55,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 12:10:55,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:10:55,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 12:10:55,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 12:10:55,254 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-09-11 12:10:55,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:10:55,302 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2020-09-11 12:10:55,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 12:10:55,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-09-11 12:10:55,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:10:55,316 INFO L225 Difference]: With dead ends: 23 [2020-09-11 12:10:55,317 INFO L226 Difference]: Without dead ends: 23 [2020-09-11 12:10:55,319 INFO L675 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 [2020-09-11 12:10:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-11 12:10:55,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-11 12:10:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-11 12:10:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2020-09-11 12:10:55,361 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2020-09-11 12:10:55,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:10:55,361 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-09-11 12:10:55,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 12:10:55,362 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2020-09-11 12:10:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-11 12:10:55,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:10:55,363 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-09-11 12:10:55,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 12:10:55,363 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 12:10:55,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:10:55,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1129907960, now seen corresponding path program 1 times [2020-09-11 12:10:55,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:10:55,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720404990] [2020-09-11 12:10:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:10:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 12:10:55,386 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 12:10:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 12:10:55,397 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 12:10:55,427 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 12:10:55,427 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 12:10:55,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 12:10:55,429 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 12:10:55,430 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-11 12:10:55,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,444 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,445 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,445 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,445 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,445 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,446 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,446 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,451 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,453 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:55,454 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 12:10:55,455 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 12:10:55,455 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 12:10:55,455 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 12:10:55,455 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 12:10:55,455 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 12:10:55,456 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 12:10:55,456 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 12:10:55,456 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 12:10:55,458 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 46 transitions, 104 flow [2020-09-11 12:10:55,459 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-09-11 12:10:55,475 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-09-11 12:10:55,475 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-11 12:10:55,478 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 7/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 6 conditions per place. [2020-09-11 12:10:55,480 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-09-11 12:10:55,493 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-09-11 12:10:55,493 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-11 12:10:55,494 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 7/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 145 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 41. Up to 6 conditions per place. [2020-09-11 12:10:55,496 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 884 [2020-09-11 12:10:55,496 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 12:10:56,339 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1690 [2020-09-11 12:10:56,340 INFO L214 etLargeBlockEncoding]: Total number of compositions: 31 [2020-09-11 12:10:56,340 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 21 transitions, 54 flow [2020-09-11 12:10:56,353 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 208 states. [2020-09-11 12:10:56,353 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2020-09-11 12:10:56,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-11 12:10:56,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:10:56,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:10:56,357 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:10:56,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:10:56,358 INFO L82 PathProgramCache]: Analyzing trace with hash -918990935, now seen corresponding path program 1 times [2020-09-11 12:10:56,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:10:56,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135833643] [2020-09-11 12:10:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:10:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:10:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:10:56,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135833643] [2020-09-11 12:10:56,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:10:56,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:10:56,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787897645] [2020-09-11 12:10:56,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 12:10:56,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:10:56,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 12:10:56,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 12:10:56,482 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 5 states. [2020-09-11 12:10:56,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:10:56,547 INFO L93 Difference]: Finished difference Result 251 states and 667 transitions. [2020-09-11 12:10:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 12:10:56,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-11 12:10:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:10:56,557 INFO L225 Difference]: With dead ends: 251 [2020-09-11 12:10:56,558 INFO L226 Difference]: Without dead ends: 251 [2020-09-11 12:10:56,558 INFO L675 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 [2020-09-11 12:10:56,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-09-11 12:10:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 211. [2020-09-11 12:10:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-11 12:10:56,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 561 transitions. [2020-09-11 12:10:56,600 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 561 transitions. Word has length 7 [2020-09-11 12:10:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:10:56,601 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 561 transitions. [2020-09-11 12:10:56,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 12:10:56,601 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 561 transitions. [2020-09-11 12:10:56,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 12:10:56,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:10:56,602 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-09-11 12:10:56,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 12:10:56,603 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:10:56,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:10:56,603 INFO L82 PathProgramCache]: Analyzing trace with hash -684520473, now seen corresponding path program 1 times [2020-09-11 12:10:56,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:10:56,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659053248] [2020-09-11 12:10:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:10:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 12:10:56,620 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 12:10:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 12:10:56,632 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 12:10:56,643 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 12:10:56,643 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 12:10:56,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 12:10:56,645 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 12:10:56,648 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-11 12:10:56,659 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,659 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,660 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,662 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,662 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,662 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,662 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,663 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,663 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,663 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,663 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,663 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,664 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,664 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,665 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,667 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,669 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,671 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,674 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,674 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,675 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,675 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:56,676 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-11 12:10:56,677 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 12:10:56,677 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 12:10:56,677 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 12:10:56,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 12:10:56,677 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 12:10:56,678 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 12:10:56,678 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 12:10:56,678 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 12:10:56,679 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 60 transitions, 141 flow [2020-09-11 12:10:56,680 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-09-11 12:10:56,694 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-09-11 12:10:56,695 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-11 12:10:56,696 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 86 events. 10/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-09-11 12:10:56,699 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-09-11 12:10:56,713 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-09-11 12:10:56,713 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-11 12:10:56,715 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 86 events. 10/86 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-09-11 12:10:56,717 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1872 [2020-09-11 12:10:56,717 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 12:10:57,793 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3466 [2020-09-11 12:10:57,794 INFO L214 etLargeBlockEncoding]: Total number of compositions: 40 [2020-09-11 12:10:57,794 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 27 transitions, 75 flow [2020-09-11 12:10:57,857 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1252 states. [2020-09-11 12:10:57,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states. [2020-09-11 12:10:57,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-11 12:10:57,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:10:57,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:10:57,858 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:10:57,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:10:57,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1577579009, now seen corresponding path program 1 times [2020-09-11 12:10:57,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:10:57,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030260397] [2020-09-11 12:10:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:10:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:10:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:10:57,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030260397] [2020-09-11 12:10:57,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:10:57,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:10:57,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530840738] [2020-09-11 12:10:57,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 12:10:57,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:10:57,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 12:10:57,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 12:10:57,962 INFO L87 Difference]: Start difference. First operand 1252 states. Second operand 5 states. [2020-09-11 12:10:58,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:10:58,079 INFO L93 Difference]: Finished difference Result 1547 states and 5625 transitions. [2020-09-11 12:10:58,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 12:10:58,080 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-11 12:10:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:10:58,101 INFO L225 Difference]: With dead ends: 1547 [2020-09-11 12:10:58,102 INFO L226 Difference]: Without dead ends: 1547 [2020-09-11 12:10:58,102 INFO L675 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 [2020-09-11 12:10:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2020-09-11 12:10:58,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1213. [2020-09-11 12:10:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-09-11 12:10:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 4426 transitions. [2020-09-11 12:10:58,187 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 4426 transitions. Word has length 7 [2020-09-11 12:10:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:10:58,188 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 4426 transitions. [2020-09-11 12:10:58,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 12:10:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 4426 transitions. [2020-09-11 12:10:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 12:10:58,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:10:58,189 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:10:58,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 12:10:58,189 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:10:58,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:10:58,190 INFO L82 PathProgramCache]: Analyzing trace with hash 70043134, now seen corresponding path program 1 times [2020-09-11 12:10:58,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:10:58,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51844881] [2020-09-11 12:10:58,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:10:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:10:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:10:58,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51844881] [2020-09-11 12:10:58,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:10:58,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:10:58,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374913537] [2020-09-11 12:10:58,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 12:10:58,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:10:58,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 12:10:58,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 12:10:58,361 INFO L87 Difference]: Start difference. First operand 1213 states and 4426 transitions. Second operand 4 states. [2020-09-11 12:10:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:10:58,499 INFO L93 Difference]: Finished difference Result 1516 states and 5554 transitions. [2020-09-11 12:10:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 12:10:58,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 12:10:58,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:10:58,513 INFO L225 Difference]: With dead ends: 1516 [2020-09-11 12:10:58,514 INFO L226 Difference]: Without dead ends: 1516 [2020-09-11 12:10:58,514 INFO L675 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 [2020-09-11 12:10:58,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2020-09-11 12:10:58,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1241. [2020-09-11 12:10:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-09-11 12:10:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 4558 transitions. [2020-09-11 12:10:58,571 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 4558 transitions. Word has length 9 [2020-09-11 12:10:58,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:10:58,571 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 4558 transitions. [2020-09-11 12:10:58,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 12:10:58,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 4558 transitions. [2020-09-11 12:10:58,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 12:10:58,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:10:58,572 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:10:58,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 12:10:58,573 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:10:58,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:10:58,573 INFO L82 PathProgramCache]: Analyzing trace with hash 745225709, now seen corresponding path program 1 times [2020-09-11 12:10:58,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:10:58,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941966295] [2020-09-11 12:10:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:10:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:10:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 12:10:58,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941966295] [2020-09-11 12:10:58,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:10:58,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:10:58,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811559122] [2020-09-11 12:10:58,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 12:10:58,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:10:58,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 12:10:58,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 12:10:58,636 INFO L87 Difference]: Start difference. First operand 1241 states and 4558 transitions. Second operand 5 states. [2020-09-11 12:10:58,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:10:58,706 INFO L93 Difference]: Finished difference Result 1685 states and 6153 transitions. [2020-09-11 12:10:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 12:10:58,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-11 12:10:58,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:10:58,723 INFO L225 Difference]: With dead ends: 1685 [2020-09-11 12:10:58,723 INFO L226 Difference]: Without dead ends: 1685 [2020-09-11 12:10:58,724 INFO L675 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 [2020-09-11 12:10:58,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-09-11 12:10:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1404. [2020-09-11 12:10:58,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2020-09-11 12:10:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5142 transitions. [2020-09-11 12:10:58,786 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5142 transitions. Word has length 10 [2020-09-11 12:10:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:10:58,788 INFO L479 AbstractCegarLoop]: Abstraction has 1404 states and 5142 transitions. [2020-09-11 12:10:58,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 12:10:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5142 transitions. [2020-09-11 12:10:58,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 12:10:58,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:10:58,790 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-09-11 12:10:58,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 12:10:58,791 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:10:58,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:10:58,791 INFO L82 PathProgramCache]: Analyzing trace with hash 405776013, now seen corresponding path program 1 times [2020-09-11 12:10:58,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:10:58,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833429956] [2020-09-11 12:10:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:10:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 12:10:58,806 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 12:10:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 12:10:58,816 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 12:10:58,821 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 12:10:58,821 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 12:10:58,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 12:10:58,822 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 12:10:58,822 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-11 12:10:58,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,836 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,836 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,840 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,840 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,841 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,841 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,843 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,843 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,844 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,845 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,845 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,846 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,846 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:10:58,849 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-11 12:10:58,850 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 12:10:58,850 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 12:10:58,850 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 12:10:58,850 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 12:10:58,850 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 12:10:58,850 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 12:10:58,850 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 12:10:58,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 12:10:58,852 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 74 transitions, 180 flow [2020-09-11 12:10:58,852 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-09-11 12:10:58,868 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-09-11 12:10:58,869 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-11 12:10:58,870 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 13/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 308 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2020-09-11 12:10:58,875 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-09-11 12:10:58,888 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-09-11 12:10:58,888 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-11 12:10:58,890 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 109 events. 13/109 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 308 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 10 conditions per place. [2020-09-11 12:10:58,894 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3224 [2020-09-11 12:10:58,894 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 12:11:00,219 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6771 [2020-09-11 12:11:00,219 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-09-11 12:11:00,220 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 35 transitions, 102 flow [2020-09-11 12:11:00,778 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7516 states. [2020-09-11 12:11:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states. [2020-09-11 12:11:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-11 12:11:00,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:00,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:00,779 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 12:11:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:00,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1757560872, now seen corresponding path program 1 times [2020-09-11 12:11:00,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:00,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774835516] [2020-09-11 12:11:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:00,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774835516] [2020-09-11 12:11:00,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:00,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:00,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888354181] [2020-09-11 12:11:00,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 12:11:00,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:00,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 12:11:00,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 12:11:00,848 INFO L87 Difference]: Start difference. First operand 7516 states. Second operand 5 states. [2020-09-11 12:11:01,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:01,032 INFO L93 Difference]: Finished difference Result 8945 states and 41357 transitions. [2020-09-11 12:11:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 12:11:01,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-11 12:11:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:01,147 INFO L225 Difference]: With dead ends: 8945 [2020-09-11 12:11:01,147 INFO L226 Difference]: Without dead ends: 8945 [2020-09-11 12:11:01,148 INFO L675 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 [2020-09-11 12:11:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8945 states. [2020-09-11 12:11:01,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8945 to 6943. [2020-09-11 12:11:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6943 states. [2020-09-11 12:11:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 32243 transitions. [2020-09-11 12:11:01,660 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 32243 transitions. Word has length 7 [2020-09-11 12:11:01,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:01,660 INFO L479 AbstractCegarLoop]: Abstraction has 6943 states and 32243 transitions. [2020-09-11 12:11:01,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 12:11:01,661 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 32243 transitions. [2020-09-11 12:11:01,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 12:11:01,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:01,664 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:01,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 12:11:01,664 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 12:11:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:01,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1093825439, now seen corresponding path program 1 times [2020-09-11 12:11:01,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:01,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006650408] [2020-09-11 12:11:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:01,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006650408] [2020-09-11 12:11:01,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:01,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:01,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612444470] [2020-09-11 12:11:01,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 12:11:01,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:01,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 12:11:01,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 12:11:01,759 INFO L87 Difference]: Start difference. First operand 6943 states and 32243 transitions. Second operand 4 states. [2020-09-11 12:11:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:01,946 INFO L93 Difference]: Finished difference Result 9334 states and 43415 transitions. [2020-09-11 12:11:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 12:11:01,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-11 12:11:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:02,001 INFO L225 Difference]: With dead ends: 9334 [2020-09-11 12:11:02,001 INFO L226 Difference]: Without dead ends: 9334 [2020-09-11 12:11:02,002 INFO L675 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 [2020-09-11 12:11:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9334 states. [2020-09-11 12:11:03,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9334 to 7850. [2020-09-11 12:11:03,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7850 states. [2020-09-11 12:11:03,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7850 states to 7850 states and 36573 transitions. [2020-09-11 12:11:03,070 INFO L78 Accepts]: Start accepts. Automaton has 7850 states and 36573 transitions. Word has length 9 [2020-09-11 12:11:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:03,070 INFO L479 AbstractCegarLoop]: Abstraction has 7850 states and 36573 transitions. [2020-09-11 12:11:03,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 12:11:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 7850 states and 36573 transitions. [2020-09-11 12:11:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 12:11:03,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:03,071 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:03,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 12:11:03,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 12:11:03,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:03,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1717595244, now seen corresponding path program 1 times [2020-09-11 12:11:03,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:03,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937397973] [2020-09-11 12:11:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 12:11:03,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937397973] [2020-09-11 12:11:03,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:03,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:03,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762601972] [2020-09-11 12:11:03,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 12:11:03,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:03,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 12:11:03,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 12:11:03,136 INFO L87 Difference]: Start difference. First operand 7850 states and 36573 transitions. Second operand 5 states. [2020-09-11 12:11:03,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:03,295 INFO L93 Difference]: Finished difference Result 10343 states and 47933 transitions. [2020-09-11 12:11:03,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 12:11:03,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-11 12:11:03,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:03,341 INFO L225 Difference]: With dead ends: 10343 [2020-09-11 12:11:03,341 INFO L226 Difference]: Without dead ends: 10343 [2020-09-11 12:11:03,342 INFO L675 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 [2020-09-11 12:11:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10343 states. [2020-09-11 12:11:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10343 to 8547. [2020-09-11 12:11:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8547 states. [2020-09-11 12:11:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8547 states to 8547 states and 39726 transitions. [2020-09-11 12:11:03,814 INFO L78 Accepts]: Start accepts. Automaton has 8547 states and 39726 transitions. Word has length 10 [2020-09-11 12:11:03,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:03,814 INFO L479 AbstractCegarLoop]: Abstraction has 8547 states and 39726 transitions. [2020-09-11 12:11:03,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 12:11:03,814 INFO L276 IsEmpty]: Start isEmpty. Operand 8547 states and 39726 transitions. [2020-09-11 12:11:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 12:11:03,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:03,815 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:03,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-11 12:11:03,816 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 12:11:03,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:03,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1341588144, now seen corresponding path program 1 times [2020-09-11 12:11:03,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:03,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538605866] [2020-09-11 12:11:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 12:11:03,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538605866] [2020-09-11 12:11:03,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:03,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:03,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313940482] [2020-09-11 12:11:03,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 12:11:03,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:03,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 12:11:03,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 12:11:03,894 INFO L87 Difference]: Start difference. First operand 8547 states and 39726 transitions. Second operand 4 states. [2020-09-11 12:11:04,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:04,095 INFO L93 Difference]: Finished difference Result 11574 states and 53865 transitions. [2020-09-11 12:11:04,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 12:11:04,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 12:11:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:04,139 INFO L225 Difference]: With dead ends: 11574 [2020-09-11 12:11:04,139 INFO L226 Difference]: Without dead ends: 11574 [2020-09-11 12:11:04,139 INFO L675 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 [2020-09-11 12:11:04,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11574 states. [2020-09-11 12:11:04,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11574 to 10068. [2020-09-11 12:11:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10068 states. [2020-09-11 12:11:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 46954 transitions. [2020-09-11 12:11:04,645 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 46954 transitions. Word has length 12 [2020-09-11 12:11:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:04,646 INFO L479 AbstractCegarLoop]: Abstraction has 10068 states and 46954 transitions. [2020-09-11 12:11:04,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 12:11:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 46954 transitions. [2020-09-11 12:11:04,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 12:11:04,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:04,647 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:04,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-11 12:11:04,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 12:11:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:04,648 INFO L82 PathProgramCache]: Analyzing trace with hash 472658435, now seen corresponding path program 1 times [2020-09-11 12:11:04,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:04,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165483866] [2020-09-11 12:11:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:04,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165483866] [2020-09-11 12:11:04,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202562567] [2020-09-11 12:11:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-11 12:11:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:04,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 12:11:04,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 12:11:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:04,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 12:11:04,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-09-11 12:11:04,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361763112] [2020-09-11 12:11:04,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 12:11:04,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:04,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 12:11:04,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-11 12:11:04,873 INFO L87 Difference]: Start difference. First operand 10068 states and 46954 transitions. Second operand 6 states. [2020-09-11 12:11:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:04,997 INFO L93 Difference]: Finished difference Result 2132 states and 7715 transitions. [2020-09-11 12:11:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 12:11:04,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-11 12:11:04,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:05,004 INFO L225 Difference]: With dead ends: 2132 [2020-09-11 12:11:05,004 INFO L226 Difference]: Without dead ends: 2132 [2020-09-11 12:11:05,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-11 12:11:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-09-11 12:11:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1721. [2020-09-11 12:11:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1721 states. [2020-09-11 12:11:05,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 6117 transitions. [2020-09-11 12:11:05,056 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 6117 transitions. Word has length 13 [2020-09-11 12:11:05,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:05,056 INFO L479 AbstractCegarLoop]: Abstraction has 1721 states and 6117 transitions. [2020-09-11 12:11:05,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 12:11:05,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 6117 transitions. [2020-09-11 12:11:05,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 12:11:05,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:05,058 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:05,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-09-11 12:11:05,274 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 12:11:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:05,274 INFO L82 PathProgramCache]: Analyzing trace with hash -160310730, now seen corresponding path program 1 times [2020-09-11 12:11:05,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:05,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601180295] [2020-09-11 12:11:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-11 12:11:05,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601180295] [2020-09-11 12:11:05,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:05,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:05,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571069782] [2020-09-11 12:11:05,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 12:11:05,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:05,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 12:11:05,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 12:11:05,336 INFO L87 Difference]: Start difference. First operand 1721 states and 6117 transitions. Second operand 5 states. [2020-09-11 12:11:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:05,408 INFO L93 Difference]: Finished difference Result 2966 states and 10590 transitions. [2020-09-11 12:11:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 12:11:05,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 12:11:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:05,416 INFO L225 Difference]: With dead ends: 2966 [2020-09-11 12:11:05,417 INFO L226 Difference]: Without dead ends: 2966 [2020-09-11 12:11:05,417 INFO L675 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 [2020-09-11 12:11:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-09-11 12:11:05,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1991. [2020-09-11 12:11:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-09-11 12:11:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 7107 transitions. [2020-09-11 12:11:05,475 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 7107 transitions. Word has length 13 [2020-09-11 12:11:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:05,476 INFO L479 AbstractCegarLoop]: Abstraction has 1991 states and 7107 transitions. [2020-09-11 12:11:05,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 12:11:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 7107 transitions. [2020-09-11 12:11:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 12:11:05,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:05,477 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:05,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-11 12:11:05,477 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-11 12:11:05,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:05,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1231775675, now seen corresponding path program 1 times [2020-09-11 12:11:05,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:05,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815941134] [2020-09-11 12:11:05,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 12:11:05,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 12:11:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 12:11:05,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 12:11:05,504 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 12:11:05,504 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 12:11:05,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-11 12:11:05,505 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 12:11:05,505 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-11 12:11:05,514 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,515 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,515 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,516 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,516 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,517 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,517 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,518 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,518 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,519 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,519 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,519 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,520 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,520 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,520 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,520 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,520 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,520 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,521 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,521 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,521 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,521 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,521 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,522 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,522 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,523 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,523 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,524 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,524 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,525 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,525 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,526 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,526 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,527 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,527 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:05,546 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-11 12:11:05,547 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 12:11:05,547 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 12:11:05,547 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 12:11:05,547 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 12:11:05,547 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 12:11:05,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 12:11:05,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 12:11:05,548 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 12:11:05,549 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 88 transitions, 221 flow [2020-09-11 12:11:05,549 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-09-11 12:11:05,564 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-09-11 12:11:05,564 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-11 12:11:05,566 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 16/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 391 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 125. Up to 12 conditions per place. [2020-09-11 12:11:05,571 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-09-11 12:11:05,585 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-09-11 12:11:05,586 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-11 12:11:05,587 INFO L80 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 132 events. 16/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 391 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 125. Up to 12 conditions per place. [2020-09-11 12:11:05,593 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4940 [2020-09-11 12:11:05,593 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 12:11:07,504 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11021 [2020-09-11 12:11:07,504 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-11 12:11:07,505 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 44 transitions, 133 flow [2020-09-11 12:11:16,239 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 45100 states. [2020-09-11 12:11:16,239 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states. [2020-09-11 12:11:16,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-11 12:11:16,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:16,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:16,240 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:16,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1689394107, now seen corresponding path program 1 times [2020-09-11 12:11:16,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:16,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127343335] [2020-09-11 12:11:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:16,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:16,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127343335] [2020-09-11 12:11:16,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:16,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:16,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425838463] [2020-09-11 12:11:16,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 12:11:16,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:16,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 12:11:16,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 12:11:16,322 INFO L87 Difference]: Start difference. First operand 45100 states. Second operand 5 states. [2020-09-11 12:11:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:16,847 INFO L93 Difference]: Finished difference Result 50507 states and 283723 transitions. [2020-09-11 12:11:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 12:11:16,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-11 12:11:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:17,035 INFO L225 Difference]: With dead ends: 50507 [2020-09-11 12:11:17,035 INFO L226 Difference]: Without dead ends: 50507 [2020-09-11 12:11:17,035 INFO L675 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 [2020-09-11 12:11:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50507 states. [2020-09-11 12:11:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50507 to 39997. [2020-09-11 12:11:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39997 states. [2020-09-11 12:11:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39997 states to 39997 states and 225588 transitions. [2020-09-11 12:11:21,191 INFO L78 Accepts]: Start accepts. Automaton has 39997 states and 225588 transitions. Word has length 7 [2020-09-11 12:11:21,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:21,191 INFO L479 AbstractCegarLoop]: Abstraction has 39997 states and 225588 transitions. [2020-09-11 12:11:21,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 12:11:21,192 INFO L276 IsEmpty]: Start isEmpty. Operand 39997 states and 225588 transitions. [2020-09-11 12:11:21,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 12:11:21,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:21,192 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:21,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-11 12:11:21,192 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:21,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:21,193 INFO L82 PathProgramCache]: Analyzing trace with hash 10078299, now seen corresponding path program 1 times [2020-09-11 12:11:21,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:21,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860411185] [2020-09-11 12:11:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:22,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860411185] [2020-09-11 12:11:22,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883493599] [2020-09-11 12:11:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 12:11:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:23,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-09-11 12:11:23,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 12:11:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:23,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 12:11:23,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-11 12:11:23,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400131501] [2020-09-11 12:11:23,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-11 12:11:23,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:23,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-11 12:11:23,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-11 12:11:23,061 INFO L87 Difference]: Start difference. First operand 39997 states and 225588 transitions. Second operand 9 states. [2020-09-11 12:11:23,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:23,728 INFO L93 Difference]: Finished difference Result 60741 states and 341022 transitions. [2020-09-11 12:11:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-11 12:11:23,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-09-11 12:11:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:23,964 INFO L225 Difference]: With dead ends: 60741 [2020-09-11 12:11:23,965 INFO L226 Difference]: Without dead ends: 60741 [2020-09-11 12:11:23,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-11 12:11:25,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60741 states. [2020-09-11 12:11:29,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60741 to 38665. [2020-09-11 12:11:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38665 states. [2020-09-11 12:11:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38665 states to 38665 states and 218361 transitions. [2020-09-11 12:11:29,168 INFO L78 Accepts]: Start accepts. Automaton has 38665 states and 218361 transitions. Word has length 9 [2020-09-11 12:11:29,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:29,168 INFO L479 AbstractCegarLoop]: Abstraction has 38665 states and 218361 transitions. [2020-09-11 12:11:29,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-11 12:11:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 38665 states and 218361 transitions. [2020-09-11 12:11:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 12:11:29,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:29,169 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:29,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-09-11 12:11:29,370 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:29,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:29,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1370666711, now seen corresponding path program 1 times [2020-09-11 12:11:29,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:29,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171875534] [2020-09-11 12:11:29,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 12:11:29,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171875534] [2020-09-11 12:11:29,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:29,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:29,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18436457] [2020-09-11 12:11:29,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 12:11:29,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:29,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 12:11:29,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 12:11:29,433 INFO L87 Difference]: Start difference. First operand 38665 states and 218361 transitions. Second operand 5 states. [2020-09-11 12:11:29,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:29,869 INFO L93 Difference]: Finished difference Result 51289 states and 288251 transitions. [2020-09-11 12:11:29,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 12:11:29,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-11 12:11:29,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:30,060 INFO L225 Difference]: With dead ends: 51289 [2020-09-11 12:11:30,061 INFO L226 Difference]: Without dead ends: 51289 [2020-09-11 12:11:30,061 INFO L675 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 [2020-09-11 12:11:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51289 states. [2020-09-11 12:11:35,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51289 to 41564. [2020-09-11 12:11:35,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41564 states. [2020-09-11 12:11:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41564 states to 41564 states and 234283 transitions. [2020-09-11 12:11:35,327 INFO L78 Accepts]: Start accepts. Automaton has 41564 states and 234283 transitions. Word has length 10 [2020-09-11 12:11:35,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:35,327 INFO L479 AbstractCegarLoop]: Abstraction has 41564 states and 234283 transitions. [2020-09-11 12:11:35,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 12:11:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 41564 states and 234283 transitions. [2020-09-11 12:11:35,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 12:11:35,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:35,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:35,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-11 12:11:35,328 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:35,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:35,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1344276643, now seen corresponding path program 1 times [2020-09-11 12:11:35,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:35,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743235525] [2020-09-11 12:11:35,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-11 12:11:35,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743235525] [2020-09-11 12:11:35,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:35,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:35,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253403769] [2020-09-11 12:11:35,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 12:11:35,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:35,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 12:11:35,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 12:11:35,415 INFO L87 Difference]: Start difference. First operand 41564 states and 234283 transitions. Second operand 4 states. [2020-09-11 12:11:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:35,969 INFO L93 Difference]: Finished difference Result 57674 states and 325273 transitions. [2020-09-11 12:11:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 12:11:35,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 12:11:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:36,204 INFO L225 Difference]: With dead ends: 57674 [2020-09-11 12:11:36,204 INFO L226 Difference]: Without dead ends: 57674 [2020-09-11 12:11:36,204 INFO L675 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 [2020-09-11 12:11:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57674 states. [2020-09-11 12:11:42,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57674 to 50562. [2020-09-11 12:11:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50562 states. [2020-09-11 12:11:42,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50562 states to 50562 states and 285616 transitions. [2020-09-11 12:11:42,295 INFO L78 Accepts]: Start accepts. Automaton has 50562 states and 285616 transitions. Word has length 12 [2020-09-11 12:11:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:42,295 INFO L479 AbstractCegarLoop]: Abstraction has 50562 states and 285616 transitions. [2020-09-11 12:11:42,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 12:11:42,295 INFO L276 IsEmpty]: Start isEmpty. Operand 50562 states and 285616 transitions. [2020-09-11 12:11:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 12:11:42,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:42,296 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:42,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-11 12:11:42,297 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:42,297 INFO L82 PathProgramCache]: Analyzing trace with hash 559710068, now seen corresponding path program 1 times [2020-09-11 12:11:42,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:42,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019539668] [2020-09-11 12:11:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:42,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019539668] [2020-09-11 12:11:42,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383889197] [2020-09-11 12:11:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 12:11:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:42,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-11 12:11:42,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-11 12:11:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 12:11:42,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-11 12:11:42,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-09-11 12:11:42,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517573822] [2020-09-11 12:11:42,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 12:11:42,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:42,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 12:11:42,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-11 12:11:42,468 INFO L87 Difference]: Start difference. First operand 50562 states and 285616 transitions. Second operand 6 states. [2020-09-11 12:11:42,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:42,664 INFO L93 Difference]: Finished difference Result 8161 states and 34918 transitions. [2020-09-11 12:11:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 12:11:42,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-11 12:11:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:42,691 INFO L225 Difference]: With dead ends: 8161 [2020-09-11 12:11:42,691 INFO L226 Difference]: Without dead ends: 8161 [2020-09-11 12:11:42,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-11 12:11:42,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2020-09-11 12:11:42,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 6538. [2020-09-11 12:11:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6538 states. [2020-09-11 12:11:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 27580 transitions. [2020-09-11 12:11:42,933 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 27580 transitions. Word has length 13 [2020-09-11 12:11:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:42,933 INFO L479 AbstractCegarLoop]: Abstraction has 6538 states and 27580 transitions. [2020-09-11 12:11:42,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 12:11:42,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 27580 transitions. [2020-09-11 12:11:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 12:11:42,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:42,934 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:43,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-11 12:11:43,143 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:43,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:43,143 INFO L82 PathProgramCache]: Analyzing trace with hash -658320024, now seen corresponding path program 1 times [2020-09-11 12:11:43,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:43,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973279405] [2020-09-11 12:11:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-11 12:11:43,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973279405] [2020-09-11 12:11:43,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:43,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:43,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803495420] [2020-09-11 12:11:43,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 12:11:43,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:43,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 12:11:43,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 12:11:43,211 INFO L87 Difference]: Start difference. First operand 6538 states and 27580 transitions. Second operand 5 states. [2020-09-11 12:11:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:43,358 INFO L93 Difference]: Finished difference Result 11626 states and 49057 transitions. [2020-09-11 12:11:43,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 12:11:43,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-11 12:11:43,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:43,404 INFO L225 Difference]: With dead ends: 11626 [2020-09-11 12:11:43,404 INFO L226 Difference]: Without dead ends: 11626 [2020-09-11 12:11:43,404 INFO L675 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 [2020-09-11 12:11:43,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11626 states. [2020-09-11 12:11:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11626 to 7402. [2020-09-11 12:11:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7402 states. [2020-09-11 12:11:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 31270 transitions. [2020-09-11 12:11:43,776 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 31270 transitions. Word has length 13 [2020-09-11 12:11:43,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:43,776 INFO L479 AbstractCegarLoop]: Abstraction has 7402 states and 31270 transitions. [2020-09-11 12:11:43,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 12:11:43,776 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 31270 transitions. [2020-09-11 12:11:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 12:11:43,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:43,780 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:43,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-11 12:11:43,780 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:43,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:43,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1285367916, now seen corresponding path program 1 times [2020-09-11 12:11:43,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:43,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463979900] [2020-09-11 12:11:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-11 12:11:43,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463979900] [2020-09-11 12:11:43,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:43,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:43,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845226808] [2020-09-11 12:11:43,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 12:11:43,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:43,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 12:11:43,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 12:11:43,856 INFO L87 Difference]: Start difference. First operand 7402 states and 31270 transitions. Second operand 4 states. [2020-09-11 12:11:43,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:43,960 INFO L93 Difference]: Finished difference Result 6970 states and 29425 transitions. [2020-09-11 12:11:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 12:11:43,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-11 12:11:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:43,986 INFO L225 Difference]: With dead ends: 6970 [2020-09-11 12:11:43,987 INFO L226 Difference]: Without dead ends: 6970 [2020-09-11 12:11:43,988 INFO L675 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 [2020-09-11 12:11:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6970 states. [2020-09-11 12:11:44,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6970 to 6106. [2020-09-11 12:11:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6106 states. [2020-09-11 12:11:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 25735 transitions. [2020-09-11 12:11:44,290 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 25735 transitions. Word has length 15 [2020-09-11 12:11:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:44,291 INFO L479 AbstractCegarLoop]: Abstraction has 6106 states and 25735 transitions. [2020-09-11 12:11:44,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 12:11:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 25735 transitions. [2020-09-11 12:11:44,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-11 12:11:44,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:44,294 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:44,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-11 12:11:44,294 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:44,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:44,295 INFO L82 PathProgramCache]: Analyzing trace with hash 753296421, now seen corresponding path program 1 times [2020-09-11 12:11:44,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:44,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50019498] [2020-09-11 12:11:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 12:11:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-11 12:11:44,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50019498] [2020-09-11 12:11:44,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 12:11:44,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 12:11:44,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671917242] [2020-09-11 12:11:44,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 12:11:44,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 12:11:44,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 12:11:44,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 12:11:44,374 INFO L87 Difference]: Start difference. First operand 6106 states and 25735 transitions. Second operand 5 states. [2020-09-11 12:11:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 12:11:44,524 INFO L93 Difference]: Finished difference Result 10825 states and 45769 transitions. [2020-09-11 12:11:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 12:11:44,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-11 12:11:44,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 12:11:44,558 INFO L225 Difference]: With dead ends: 10825 [2020-09-11 12:11:44,558 INFO L226 Difference]: Without dead ends: 10825 [2020-09-11 12:11:44,558 INFO L675 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 [2020-09-11 12:11:44,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2020-09-11 12:11:44,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 6916. [2020-09-11 12:11:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6916 states. [2020-09-11 12:11:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6916 states to 6916 states and 29245 transitions. [2020-09-11 12:11:44,889 INFO L78 Accepts]: Start accepts. Automaton has 6916 states and 29245 transitions. Word has length 16 [2020-09-11 12:11:44,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 12:11:44,889 INFO L479 AbstractCegarLoop]: Abstraction has 6916 states and 29245 transitions. [2020-09-11 12:11:44,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 12:11:44,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6916 states and 29245 transitions. [2020-09-11 12:11:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 12:11:44,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 12:11:44,894 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 12:11:44,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-11 12:11:44,895 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 12:11:44,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 12:11:44,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1848176610, now seen corresponding path program 1 times [2020-09-11 12:11:44,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 12:11:44,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414247848] [2020-09-11 12:11:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 12:11:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 12:11:44,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 12:11:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-11 12:11:44,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-11 12:11:44,949 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-11 12:11:44,950 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-11 12:11:44,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-11 12:11:44,950 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-11 12:11:44,951 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-11 12:11:44,962 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,962 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,963 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,963 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,963 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,964 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,964 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,964 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,964 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,965 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,965 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,965 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,965 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,965 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,965 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,966 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,966 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,966 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,966 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,966 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,966 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,967 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,968 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,968 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,969 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,969 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,969 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,969 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,970 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,970 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,971 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,971 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,972 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,972 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,973 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,973 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,974 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,974 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,975 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,980 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,981 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,982 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,982 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,983 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,983 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,984 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,985 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,985 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,987 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,987 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,988 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,988 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,990 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,991 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,991 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,993 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,996 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,997 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,998 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,998 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 12:11:44,999 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-11 12:11:45,000 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 12:11:45,000 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 12:11:45,000 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 12:11:45,000 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 12:11:45,000 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 12:11:45,000 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 12:11:45,001 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 12:11:45,001 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 12:11:45,002 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 102 transitions, 264 flow [2020-09-11 12:11:45,002 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-09-11 12:11:45,023 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-09-11 12:11:45,023 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-11 12:11:45,025 INFO L80 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 155 events. 19/155 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 461 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 14 conditions per place. [2020-09-11 12:11:45,033 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-09-11 12:11:45,054 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-09-11 12:11:45,054 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-11 12:11:45,056 INFO L80 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 155 events. 19/155 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 461 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 156. Up to 14 conditions per place. [2020-09-11 12:11:45,064 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 7020 [2020-09-11 12:11:45,064 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 12:11:45,684 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-09-11 12:11:47,435 INFO L206 etLargeBlockEncoding]: Checked pairs total: 17367 [2020-09-11 12:11:47,435 INFO L214 etLargeBlockEncoding]: Total number of compositions: 72 [2020-09-11 12:11:47,437 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 53 transitions, 166 flow Received shutdown request... [2020-09-11 12:15:02,475 WARN L544 AbstractCegarLoop]: Verification canceled [2020-09-11 12:15:02,481 WARN L228 ceAbstractionStarter]: Timeout [2020-09-11 12:15:02,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 12:15:02 BasicIcfg [2020-09-11 12:15:02,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 12:15:02,495 INFO L168 Benchmark]: Toolchain (without parser) took 250006.43 ms. Allocated memory was 138.9 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 100.7 MB in the beginning and 1.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-09-11 12:15:02,495 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 12:15:02,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 752.77 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.1 MB in the beginning and 161.3 MB in the end (delta: -61.3 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-09-11 12:15:02,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.10 ms. Allocated memory is still 201.3 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 12:15:02,502 INFO L168 Benchmark]: Boogie Preprocessor took 34.84 ms. Allocated memory is still 201.3 MB. Free memory was 158.7 MB in the beginning and 157.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 12:15:02,502 INFO L168 Benchmark]: RCFGBuilder took 456.22 ms. Allocated memory is still 201.3 MB. Free memory was 157.3 MB in the beginning and 136.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-09-11 12:15:02,503 INFO L168 Benchmark]: TraceAbstraction took 248690.20 ms. Allocated memory was 201.3 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 135.7 MB in the beginning and 1.1 GB in the end (delta: -986.7 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-09-11 12:15:02,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 752.77 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 100.1 MB in the beginning and 161.3 MB in the end (delta: -61.3 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.10 ms. Allocated memory is still 201.3 MB. Free memory was 160.7 MB in the beginning and 158.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.84 ms. Allocated memory is still 201.3 MB. Free memory was 158.7 MB in the beginning and 157.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.22 ms. Allocated memory is still 201.3 MB. Free memory was 157.3 MB in the beginning and 136.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248690.20 ms. Allocated memory was 201.3 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 135.7 MB in the beginning and 1.1 GB in the end (delta: -986.7 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 32 ProgramPointsBefore, 12 ProgramPointsAfterwards, 32 TransitionsBefore, 10 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 133 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 174 CheckedPairsTotal, 27 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 46 ProgramPointsBefore, 22 ProgramPointsAfterwards, 46 TransitionsBefore, 21 TransitionsAfterwards, 884 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 460 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 14 SemBasedMoverChecksPositive, 26 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 1690 CheckedPairsTotal, 31 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.1s, 60 ProgramPointsBefore, 30 ProgramPointsAfterwards, 60 TransitionsBefore, 27 TransitionsAfterwards, 1872 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 914 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 37 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 3466 CheckedPairsTotal, 40 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 74 ProgramPointsBefore, 38 ProgramPointsAfterwards, 74 TransitionsBefore, 35 TransitionsAfterwards, 3224 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 1534 VarBasedMoverChecksPositive, 75 VarBasedMoverChecksNegative, 35 SemBasedMoverChecksPositive, 60 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 6771 CheckedPairsTotal, 49 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 88 ProgramPointsBefore, 46 ProgramPointsAfterwards, 88 TransitionsBefore, 44 TransitionsAfterwards, 4940 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 2371 VarBasedMoverChecksPositive, 155 VarBasedMoverChecksNegative, 107 SemBasedMoverChecksPositive, 76 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 0 MoverChecksTotal, 11021 CheckedPairsTotal, 59 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.4s, 102 ProgramPointsBefore, 54 ProgramPointsAfterwards, 102 TransitionsBefore, 53 TransitionsAfterwards, 7020 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 3582 VarBasedMoverChecksPositive, 168 VarBasedMoverChecksNegative, 103 SemBasedMoverChecksPositive, 92 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 0 MoverChecksTotal, 17367 CheckedPairsTotal, 72 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 690]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 690). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 54 places, 53 transitions, 166 flow. Already constructed 215189 states. Currently 25017 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 6 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 248.3s, OverallIterations: 24, TraceHistogramMax: 6, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 213.0s, HoareTripleCheckerStatistics: 1052 SDtfs, 1115 SDslu, 1479 SDs, 0 SdLazy, 1301 SolverSat, 127 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50562occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 24.8s AutomataMinimizationTime, 19 MinimizatonAttempts, 69147 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 11344 SizeOfPredicates, 2 NumberOfNonLiveVariables, 191 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 22 InterpolantComputations, 16 PerfectInterpolantSequences, 56/68 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown