/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 0.1.25-60655ea [2020-09-14 13:01:04,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-14 13:01:04,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-14 13:01:04,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-14 13:01:04,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-14 13:01:04,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-14 13:01:04,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-14 13:01:04,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-14 13:01:04,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-14 13:01:04,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-14 13:01:04,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-14 13:01:04,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-14 13:01:04,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-14 13:01:04,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-14 13:01:04,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-14 13:01:04,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-14 13:01:04,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-14 13:01:04,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-14 13:01:04,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-14 13:01:04,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-14 13:01:04,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-14 13:01:04,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-14 13:01:04,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-14 13:01:04,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-14 13:01:04,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-14 13:01:04,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-14 13:01:04,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-14 13:01:04,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-14 13:01:04,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-14 13:01:04,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-14 13:01:04,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-14 13:01:04,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-14 13:01:04,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-14 13:01:04,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-14 13:01:04,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-14 13:01:04,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-14 13:01:04,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-14 13:01:04,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-14 13:01:04,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-14 13:01:04,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-14 13:01:04,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-14 13:01:04,894 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 [2020-09-14 13:01:04,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-14 13:01:04,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-14 13:01:04,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-14 13:01:04,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-14 13:01:04,944 INFO L138 SettingsManager]: * Use SBE=true [2020-09-14 13:01:04,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-14 13:01:04,944 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-14 13:01:04,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-14 13:01:04,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-14 13:01:04,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-14 13:01:04,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-14 13:01:04,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-14 13:01:04,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-14 13:01:04,947 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-14 13:01:04,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-14 13:01:04,947 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-14 13:01:04,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-14 13:01:04,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-14 13:01:04,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-14 13:01:04,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-14 13:01:04,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-14 13:01:04,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-14 13:01:04,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-14 13:01:04,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-14 13:01:04,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-14 13:01:04,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-14 13:01:04,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-14 13:01:04,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-14 13:01:04,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-14 13:01:04,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-14 13:01:05,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-14 13:01:05,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-14 13:01:05,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-14 13:01:05,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-14 13:01:05,432 INFO L275 PluginConnector]: CDTParser initialized [2020-09-14 13:01:05,433 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-09-14 13:01:05,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7efb564a/cc814f7ec838409b90d8f30c2e50547d/FLAGbd0014424 [2020-09-14 13:01:06,186 INFO L306 CDTParser]: Found 1 translation units. [2020-09-14 13:01:06,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-ext/13_unverif.i [2020-09-14 13:01:06,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7efb564a/cc814f7ec838409b90d8f30c2e50547d/FLAGbd0014424 [2020-09-14 13:01:06,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d7efb564a/cc814f7ec838409b90d8f30c2e50547d [2020-09-14 13:01:06,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-14 13:01:06,427 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-14 13:01:06,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-14 13:01:06,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-14 13:01:06,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-14 13:01:06,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 01:01:06" (1/1) ... [2020-09-14 13:01:06,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39bcf4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:06, skipping insertion in model container [2020-09-14 13:01:06,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 01:01:06" (1/1) ... [2020-09-14 13:01:06,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-14 13:01:06,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-14 13:01:07,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 13:01:07,064 INFO L203 MainTranslator]: Completed pre-run [2020-09-14 13:01:07,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-14 13:01:07,224 INFO L208 MainTranslator]: Completed translation [2020-09-14 13:01:07,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07 WrapperNode [2020-09-14 13:01:07,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-14 13:01:07,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-14 13:01:07,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-14 13:01:07,227 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-14 13:01:07,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07" (1/1) ... [2020-09-14 13:01:07,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07" (1/1) ... [2020-09-14 13:01:07,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-14 13:01:07,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-14 13:01:07,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-14 13:01:07,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-14 13:01:07,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07" (1/1) ... [2020-09-14 13:01:07,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07" (1/1) ... [2020-09-14 13:01:07,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07" (1/1) ... [2020-09-14 13:01:07,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07" (1/1) ... [2020-09-14 13:01:07,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07" (1/1) ... [2020-09-14 13:01:07,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07" (1/1) ... [2020-09-14 13:01:07,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07" (1/1) ... [2020-09-14 13:01:07,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-14 13:01:07,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-14 13:01:07,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-14 13:01:07,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-14 13:01:07,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07" (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 [2020-09-14 13:01:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-09-14 13:01:07,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-09-14 13:01:07,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-14 13:01:07,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-14 13:01:07,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-14 13:01:07,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-14 13:01:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-14 13:01:07,401 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-14 13:01:07,861 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-14 13:01:07,861 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-14 13:01:07,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 01:01:07 BoogieIcfgContainer [2020-09-14 13:01:07,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-14 13:01:07,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-14 13:01:07,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-14 13:01:07,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-14 13:01:07,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 01:01:06" (1/3) ... [2020-09-14 13:01:07,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318688b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 01:01:07, skipping insertion in model container [2020-09-14 13:01:07,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 01:01:07" (2/3) ... [2020-09-14 13:01:07,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318688b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 01:01:07, skipping insertion in model container [2020-09-14 13:01:07,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 01:01:07" (3/3) ... [2020-09-14 13:01:07,877 INFO L109 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2020-09-14 13:01:07,888 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-14 13:01:07,888 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-14 13:01:07,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-14 13:01:07,899 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-14 13:01:07,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,921 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,922 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,922 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,923 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,925 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:07,957 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-14 13:01:07,985 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 13:01:07,985 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 13:01:07,985 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 13:01:07,986 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 13:01:07,986 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 13:01:07,986 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 13:01:07,986 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 13:01:07,986 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 13:01:08,003 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 32 transitions, 69 flow [2020-09-14 13:01:08,005 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-09-14 13:01:08,038 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-09-14 13:01:08,038 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 13:01:08,044 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. [2020-09-14 13:01:08,046 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 69 flow [2020-09-14 13:01:08,058 INFO L129 PetriNetUnfolder]: 4/40 cut-off events. [2020-09-14 13:01:08,058 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-14 13:01:08,059 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. [2020-09-14 13:01:08,060 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 260 [2020-09-14 13:01:08,062 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 13:01:08,914 INFO L206 etLargeBlockEncoding]: Checked pairs total: 174 [2020-09-14 13:01:08,914 INFO L214 etLargeBlockEncoding]: Total number of compositions: 27 [2020-09-14 13:01:08,920 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 10 transitions, 25 flow [2020-09-14 13:01:08,934 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2020-09-14 13:01:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-14 13:01:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-09-14 13:01:08,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:08,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-09-14 13:01:08,955 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 13:01:08,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:08,964 INFO L82 PathProgramCache]: Analyzing trace with hash 174998047, now seen corresponding path program 1 times [2020-09-14 13:01:08,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:08,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281429352] [2020-09-14 13:01:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:09,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281429352] [2020-09-14 13:01:09,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:09,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-14 13:01:09,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050888395] [2020-09-14 13:01:09,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 13:01:09,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:09,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 13:01:09,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 13:01:09,401 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-09-14 13:01:09,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:09,446 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2020-09-14 13:01:09,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 13:01:09,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-09-14 13:01:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:09,460 INFO L225 Difference]: With dead ends: 23 [2020-09-14 13:01:09,461 INFO L226 Difference]: Without dead ends: 23 [2020-09-14 13:01:09,462 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 [2020-09-14 13:01:09,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-14 13:01:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-14 13:01:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-14 13:01:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2020-09-14 13:01:09,507 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2020-09-14 13:01:09,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:09,507 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2020-09-14 13:01:09,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 13:01:09,508 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2020-09-14 13:01:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-09-14 13:01:09,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:09,509 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-09-14 13:01:09,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-14 13:01:09,509 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 13:01:09,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:09,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1129907960, now seen corresponding path program 1 times [2020-09-14 13:01:09,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:09,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634039542] [2020-09-14 13:01:09,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 13:01:09,535 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 13:01:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 13:01:09,548 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 13:01:09,590 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-14 13:01:09,590 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-14 13:01:09,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-14 13:01:09,594 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-14 13:01:09,594 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-09-14 13:01:09,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,606 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,606 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,607 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,607 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,611 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,612 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,613 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,620 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,621 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,621 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,622 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,622 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,623 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,624 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,624 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,624 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,624 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,625 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,625 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,625 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,626 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,626 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,626 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,626 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,626 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,627 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,630 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,630 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,631 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,631 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,631 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,631 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,631 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:09,636 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-14 13:01:09,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 13:01:09,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 13:01:09,637 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 13:01:09,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 13:01:09,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 13:01:09,637 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 13:01:09,637 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 13:01:09,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 13:01:09,643 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 46 transitions, 104 flow [2020-09-14 13:01:09,644 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-09-14 13:01:09,672 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-09-14 13:01:09,672 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-14 13:01:09,673 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. [2020-09-14 13:01:09,675 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 46 places, 46 transitions, 104 flow [2020-09-14 13:01:09,691 INFO L129 PetriNetUnfolder]: 7/63 cut-off events. [2020-09-14 13:01:09,691 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-09-14 13:01:09,693 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. [2020-09-14 13:01:09,694 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 884 [2020-09-14 13:01:09,694 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 13:01:10,561 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1690 [2020-09-14 13:01:10,562 INFO L214 etLargeBlockEncoding]: Total number of compositions: 31 [2020-09-14 13:01:10,562 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 21 transitions, 54 flow [2020-09-14 13:01:10,574 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 208 states. [2020-09-14 13:01:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2020-09-14 13:01:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-14 13:01:10,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:10,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:10,576 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 13:01:10,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:10,576 INFO L82 PathProgramCache]: Analyzing trace with hash -918990935, now seen corresponding path program 1 times [2020-09-14 13:01:10,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:10,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96666443] [2020-09-14 13:01:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:10,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96666443] [2020-09-14 13:01:10,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:10,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:10,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240259667] [2020-09-14 13:01:10,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:01:10,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:10,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:01:10,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:01:10,671 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 5 states. [2020-09-14 13:01:10,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:10,743 INFO L93 Difference]: Finished difference Result 251 states and 667 transitions. [2020-09-14 13:01:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:01:10,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-14 13:01:10,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:10,760 INFO L225 Difference]: With dead ends: 251 [2020-09-14 13:01:10,761 INFO L226 Difference]: Without dead ends: 251 [2020-09-14 13:01:10,761 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 [2020-09-14 13:01:10,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-09-14 13:01:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 211. [2020-09-14 13:01:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-14 13:01:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 561 transitions. [2020-09-14 13:01:10,813 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 561 transitions. Word has length 7 [2020-09-14 13:01:10,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:10,813 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 561 transitions. [2020-09-14 13:01:10,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 13:01:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 561 transitions. [2020-09-14 13:01:10,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 13:01:10,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:10,815 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-09-14 13:01:10,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-14 13:01:10,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 13:01:10,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:10,816 INFO L82 PathProgramCache]: Analyzing trace with hash -684520473, now seen corresponding path program 1 times [2020-09-14 13:01:10,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:10,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466232590] [2020-09-14 13:01:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 13:01:10,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 13:01:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 13:01:10,847 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 13:01:10,852 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-14 13:01:10,852 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-14 13:01:10,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-14 13:01:10,853 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-14 13:01:10,855 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-09-14 13:01:10,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,861 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,861 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,862 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,862 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,863 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,863 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,864 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,864 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,864 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,865 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,865 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,865 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,865 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,866 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,866 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,866 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,866 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,866 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,866 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,867 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,867 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,867 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,867 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,868 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,868 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,868 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,868 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,868 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,869 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,869 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,869 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,869 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,870 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,870 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,870 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,870 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,871 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,871 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,874 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,874 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,875 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,875 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,877 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,877 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,878 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,878 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:10,881 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-14 13:01:10,881 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 13:01:10,881 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 13:01:10,881 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 13:01:10,881 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 13:01:10,882 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 13:01:10,882 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 13:01:10,882 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 13:01:10,882 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 13:01:10,884 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 60 transitions, 141 flow [2020-09-14 13:01:10,884 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-09-14 13:01:10,899 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-09-14 13:01:10,899 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-14 13:01:10,901 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. [2020-09-14 13:01:10,903 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 141 flow [2020-09-14 13:01:10,916 INFO L129 PetriNetUnfolder]: 10/86 cut-off events. [2020-09-14 13:01:10,916 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-09-14 13:01:10,917 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. [2020-09-14 13:01:10,920 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1872 [2020-09-14 13:01:10,920 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 13:01:11,973 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3466 [2020-09-14 13:01:11,973 INFO L214 etLargeBlockEncoding]: Total number of compositions: 40 [2020-09-14 13:01:11,974 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 27 transitions, 75 flow [2020-09-14 13:01:12,035 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1252 states. [2020-09-14 13:01:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states. [2020-09-14 13:01:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-14 13:01:12,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:12,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:12,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 13:01:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:12,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1577579009, now seen corresponding path program 1 times [2020-09-14 13:01:12,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:12,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603911874] [2020-09-14 13:01:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:12,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603911874] [2020-09-14 13:01:12,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:12,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:12,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223920361] [2020-09-14 13:01:12,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:01:12,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:12,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:01:12,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:01:12,148 INFO L87 Difference]: Start difference. First operand 1252 states. Second operand 5 states. [2020-09-14 13:01:12,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:12,250 INFO L93 Difference]: Finished difference Result 1547 states and 5625 transitions. [2020-09-14 13:01:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:01:12,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-14 13:01:12,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:12,269 INFO L225 Difference]: With dead ends: 1547 [2020-09-14 13:01:12,270 INFO L226 Difference]: Without dead ends: 1547 [2020-09-14 13:01:12,270 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 [2020-09-14 13:01:12,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2020-09-14 13:01:12,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1213. [2020-09-14 13:01:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-09-14 13:01:12,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 4426 transitions. [2020-09-14 13:01:12,346 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 4426 transitions. Word has length 7 [2020-09-14 13:01:12,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:12,346 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 4426 transitions. [2020-09-14 13:01:12,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 13:01:12,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 4426 transitions. [2020-09-14 13:01:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 13:01:12,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:12,348 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:12,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-14 13:01:12,348 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 13:01:12,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:12,348 INFO L82 PathProgramCache]: Analyzing trace with hash 70043134, now seen corresponding path program 1 times [2020-09-14 13:01:12,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:12,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235461293] [2020-09-14 13:01:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:12,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235461293] [2020-09-14 13:01:12,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:12,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:12,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941664410] [2020-09-14 13:01:12,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 13:01:12,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:12,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 13:01:12,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 13:01:12,494 INFO L87 Difference]: Start difference. First operand 1213 states and 4426 transitions. Second operand 4 states. [2020-09-14 13:01:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:12,626 INFO L93 Difference]: Finished difference Result 1516 states and 5554 transitions. [2020-09-14 13:01:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 13:01:12,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-14 13:01:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:12,641 INFO L225 Difference]: With dead ends: 1516 [2020-09-14 13:01:12,641 INFO L226 Difference]: Without dead ends: 1516 [2020-09-14 13:01:12,641 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 [2020-09-14 13:01:12,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2020-09-14 13:01:12,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1241. [2020-09-14 13:01:12,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-09-14 13:01:12,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 4558 transitions. [2020-09-14 13:01:12,743 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 4558 transitions. Word has length 9 [2020-09-14 13:01:12,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:12,743 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 4558 transitions. [2020-09-14 13:01:12,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 13:01:12,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 4558 transitions. [2020-09-14 13:01:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 13:01:12,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:12,746 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:12,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-14 13:01:12,746 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 13:01:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:12,747 INFO L82 PathProgramCache]: Analyzing trace with hash 745225709, now seen corresponding path program 1 times [2020-09-14 13:01:12,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:12,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351449938] [2020-09-14 13:01:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-14 13:01:12,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351449938] [2020-09-14 13:01:12,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:12,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:12,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484668290] [2020-09-14 13:01:12,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:01:12,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:12,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:01:12,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:01:12,836 INFO L87 Difference]: Start difference. First operand 1241 states and 4558 transitions. Second operand 5 states. [2020-09-14 13:01:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:12,909 INFO L93 Difference]: Finished difference Result 1685 states and 6153 transitions. [2020-09-14 13:01:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:01:12,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-14 13:01:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:12,924 INFO L225 Difference]: With dead ends: 1685 [2020-09-14 13:01:12,925 INFO L226 Difference]: Without dead ends: 1685 [2020-09-14 13:01:12,925 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 [2020-09-14 13:01:12,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-09-14 13:01:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1404. [2020-09-14 13:01:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2020-09-14 13:01:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5142 transitions. [2020-09-14 13:01:12,989 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5142 transitions. Word has length 10 [2020-09-14 13:01:12,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:12,990 INFO L479 AbstractCegarLoop]: Abstraction has 1404 states and 5142 transitions. [2020-09-14 13:01:12,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 13:01:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5142 transitions. [2020-09-14 13:01:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 13:01:12,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:12,993 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-09-14 13:01:12,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-14 13:01:12,993 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 13:01:12,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:12,993 INFO L82 PathProgramCache]: Analyzing trace with hash 405776013, now seen corresponding path program 1 times [2020-09-14 13:01:12,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:12,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543904012] [2020-09-14 13:01:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 13:01:13,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 13:01:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 13:01:13,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 13:01:13,032 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-14 13:01:13,032 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-14 13:01:13,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-14 13:01:13,033 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-14 13:01:13,034 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-09-14 13:01:13,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,050 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,050 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,051 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,051 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,052 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,055 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,055 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,056 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,058 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,059 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,061 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,061 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,061 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,064 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,065 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,065 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:13,066 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-14 13:01:13,067 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 13:01:13,067 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 13:01:13,067 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 13:01:13,067 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 13:01:13,067 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 13:01:13,068 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 13:01:13,068 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 13:01:13,068 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 13:01:13,072 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 74 transitions, 180 flow [2020-09-14 13:01:13,072 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-09-14 13:01:13,100 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-09-14 13:01:13,101 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-14 13:01:13,105 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. [2020-09-14 13:01:13,111 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 180 flow [2020-09-14 13:01:13,133 INFO L129 PetriNetUnfolder]: 13/109 cut-off events. [2020-09-14 13:01:13,133 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-14 13:01:13,135 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. [2020-09-14 13:01:13,139 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 3224 [2020-09-14 13:01:13,140 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 13:01:14,509 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6771 [2020-09-14 13:01:14,510 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2020-09-14 13:01:14,510 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 35 transitions, 102 flow [2020-09-14 13:01:15,161 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7516 states. [2020-09-14 13:01:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 7516 states. [2020-09-14 13:01:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-14 13:01:15,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:15,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:15,162 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 13:01:15,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:15,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1757560872, now seen corresponding path program 1 times [2020-09-14 13:01:15,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:15,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024439544] [2020-09-14 13:01:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:15,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024439544] [2020-09-14 13:01:15,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:15,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:15,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274022921] [2020-09-14 13:01:15,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:01:15,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:15,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:01:15,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:01:15,234 INFO L87 Difference]: Start difference. First operand 7516 states. Second operand 5 states. [2020-09-14 13:01:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:15,459 INFO L93 Difference]: Finished difference Result 8945 states and 41357 transitions. [2020-09-14 13:01:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:01:15,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-14 13:01:15,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:15,556 INFO L225 Difference]: With dead ends: 8945 [2020-09-14 13:01:15,556 INFO L226 Difference]: Without dead ends: 8945 [2020-09-14 13:01:15,556 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 [2020-09-14 13:01:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8945 states. [2020-09-14 13:01:15,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8945 to 6943. [2020-09-14 13:01:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6943 states. [2020-09-14 13:01:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6943 states to 6943 states and 32243 transitions. [2020-09-14 13:01:16,621 INFO L78 Accepts]: Start accepts. Automaton has 6943 states and 32243 transitions. Word has length 7 [2020-09-14 13:01:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:16,621 INFO L479 AbstractCegarLoop]: Abstraction has 6943 states and 32243 transitions. [2020-09-14 13:01:16,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 13:01:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6943 states and 32243 transitions. [2020-09-14 13:01:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 13:01:16,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:16,622 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:16,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-14 13:01:16,622 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 13:01:16,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:16,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1093825439, now seen corresponding path program 1 times [2020-09-14 13:01:16,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:16,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962351156] [2020-09-14 13:01:16,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:16,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962351156] [2020-09-14 13:01:16,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909447457] [2020-09-14 13:01:16,702 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 [2020-09-14 13:01:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:16,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-09-14 13:01:16,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-14 13:01:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:16,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-14 13:01:16,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-09-14 13:01:16,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264710814] [2020-09-14 13:01:16,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-14 13:01:16,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:16,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-14 13:01:16,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-14 13:01:16,827 INFO L87 Difference]: Start difference. First operand 6943 states and 32243 transitions. Second operand 9 states. [2020-09-14 13:01:17,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:17,166 INFO L93 Difference]: Finished difference Result 11000 states and 50855 transitions. [2020-09-14 13:01:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-14 13:01:17,167 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-09-14 13:01:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:17,228 INFO L225 Difference]: With dead ends: 11000 [2020-09-14 13:01:17,229 INFO L226 Difference]: Without dead ends: 11000 [2020-09-14 13:01:17,229 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 [2020-09-14 13:01:17,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11000 states. [2020-09-14 13:01:17,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11000 to 6502. [2020-09-14 13:01:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6502 states. [2020-09-14 13:01:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 30281 transitions. [2020-09-14 13:01:17,728 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 30281 transitions. Word has length 9 [2020-09-14 13:01:17,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:17,729 INFO L479 AbstractCegarLoop]: Abstraction has 6502 states and 30281 transitions. [2020-09-14 13:01:17,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-14 13:01:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 30281 transitions. [2020-09-14 13:01:17,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 13:01:17,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:17,730 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:17,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-09-14 13:01:17,944 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 13:01:17,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:17,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1717595244, now seen corresponding path program 1 times [2020-09-14 13:01:17,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:17,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841773247] [2020-09-14 13:01:17,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-14 13:01:18,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841773247] [2020-09-14 13:01:18,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:18,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:18,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779295521] [2020-09-14 13:01:18,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:01:18,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:18,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:01:18,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:01:18,024 INFO L87 Difference]: Start difference. First operand 6502 states and 30281 transitions. Second operand 5 states. [2020-09-14 13:01:18,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:18,170 INFO L93 Difference]: Finished difference Result 8995 states and 41641 transitions. [2020-09-14 13:01:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:01:18,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-14 13:01:18,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:18,216 INFO L225 Difference]: With dead ends: 8995 [2020-09-14 13:01:18,216 INFO L226 Difference]: Without dead ends: 8995 [2020-09-14 13:01:18,218 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 [2020-09-14 13:01:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8995 states. [2020-09-14 13:01:18,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8995 to 7199. [2020-09-14 13:01:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7199 states. [2020-09-14 13:01:18,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7199 states to 7199 states and 33434 transitions. [2020-09-14 13:01:18,608 INFO L78 Accepts]: Start accepts. Automaton has 7199 states and 33434 transitions. Word has length 10 [2020-09-14 13:01:18,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:18,609 INFO L479 AbstractCegarLoop]: Abstraction has 7199 states and 33434 transitions. [2020-09-14 13:01:18,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 13:01:18,609 INFO L276 IsEmpty]: Start isEmpty. Operand 7199 states and 33434 transitions. [2020-09-14 13:01:18,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 13:01:18,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:18,610 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:18,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-14 13:01:18,611 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 13:01:18,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:18,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1341588144, now seen corresponding path program 1 times [2020-09-14 13:01:18,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:18,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474255007] [2020-09-14 13:01:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-14 13:01:18,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474255007] [2020-09-14 13:01:18,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:18,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:18,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16565282] [2020-09-14 13:01:18,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 13:01:18,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:18,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 13:01:18,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 13:01:18,696 INFO L87 Difference]: Start difference. First operand 7199 states and 33434 transitions. Second operand 4 states. [2020-09-14 13:01:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:18,975 INFO L93 Difference]: Finished difference Result 9593 states and 44612 transitions. [2020-09-14 13:01:18,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 13:01:18,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 13:01:18,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:19,016 INFO L225 Difference]: With dead ends: 9593 [2020-09-14 13:01:19,016 INFO L226 Difference]: Without dead ends: 9593 [2020-09-14 13:01:19,016 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 [2020-09-14 13:01:19,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9593 states. [2020-09-14 13:01:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9593 to 8352. [2020-09-14 13:01:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8352 states. [2020-09-14 13:01:19,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8352 states to 8352 states and 38944 transitions. [2020-09-14 13:01:19,370 INFO L78 Accepts]: Start accepts. Automaton has 8352 states and 38944 transitions. Word has length 12 [2020-09-14 13:01:19,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:19,370 INFO L479 AbstractCegarLoop]: Abstraction has 8352 states and 38944 transitions. [2020-09-14 13:01:19,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 13:01:19,370 INFO L276 IsEmpty]: Start isEmpty. Operand 8352 states and 38944 transitions. [2020-09-14 13:01:19,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 13:01:19,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:19,371 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:19,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-14 13:01:19,371 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 13:01:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:19,372 INFO L82 PathProgramCache]: Analyzing trace with hash 472658435, now seen corresponding path program 1 times [2020-09-14 13:01:19,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:19,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864091004] [2020-09-14 13:01:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:19,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:19,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864091004] [2020-09-14 13:01:19,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227614168] [2020-09-14 13:01:19,446 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 [2020-09-14 13:01:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:19,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-14 13:01:19,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-14 13:01:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:19,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-14 13:01:19,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-09-14 13:01:19,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379471510] [2020-09-14 13:01:19,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 13:01:19,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:19,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 13:01:19,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-14 13:01:19,555 INFO L87 Difference]: Start difference. First operand 8352 states and 38944 transitions. Second operand 6 states. [2020-09-14 13:01:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:19,679 INFO L93 Difference]: Finished difference Result 2132 states and 7715 transitions. [2020-09-14 13:01:19,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 13:01:19,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-14 13:01:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:19,687 INFO L225 Difference]: With dead ends: 2132 [2020-09-14 13:01:19,688 INFO L226 Difference]: Without dead ends: 2132 [2020-09-14 13:01:19,688 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 [2020-09-14 13:01:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-09-14 13:01:19,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1721. [2020-09-14 13:01:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1721 states. [2020-09-14 13:01:19,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 6117 transitions. [2020-09-14 13:01:19,754 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 6117 transitions. Word has length 13 [2020-09-14 13:01:19,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:19,755 INFO L479 AbstractCegarLoop]: Abstraction has 1721 states and 6117 transitions. [2020-09-14 13:01:19,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 13:01:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 6117 transitions. [2020-09-14 13:01:19,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 13:01:19,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:19,756 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:19,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-09-14 13:01:19,970 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 13:01:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:19,971 INFO L82 PathProgramCache]: Analyzing trace with hash -160310730, now seen corresponding path program 1 times [2020-09-14 13:01:19,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:19,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664245410] [2020-09-14 13:01:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:20,153 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-09-14 13:01:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-14 13:01:20,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664245410] [2020-09-14 13:01:20,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:20,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:20,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855147638] [2020-09-14 13:01:20,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:01:20,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:20,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:01:20,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:01:20,174 INFO L87 Difference]: Start difference. First operand 1721 states and 6117 transitions. Second operand 5 states. [2020-09-14 13:01:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:20,265 INFO L93 Difference]: Finished difference Result 2966 states and 10590 transitions. [2020-09-14 13:01:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:01:20,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-14 13:01:20,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:20,274 INFO L225 Difference]: With dead ends: 2966 [2020-09-14 13:01:20,274 INFO L226 Difference]: Without dead ends: 2966 [2020-09-14 13:01:20,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:01:20,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2020-09-14 13:01:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1991. [2020-09-14 13:01:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2020-09-14 13:01:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 7107 transitions. [2020-09-14 13:01:20,350 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 7107 transitions. Word has length 13 [2020-09-14 13:01:20,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:20,351 INFO L479 AbstractCegarLoop]: Abstraction has 1991 states and 7107 transitions. [2020-09-14 13:01:20,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 13:01:20,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 7107 transitions. [2020-09-14 13:01:20,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 13:01:20,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:20,353 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:20,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-14 13:01:20,353 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-09-14 13:01:20,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:20,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1231775675, now seen corresponding path program 1 times [2020-09-14 13:01:20,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:20,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107757617] [2020-09-14 13:01:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 13:01:20,393 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 13:01:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 13:01:20,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 13:01:20,415 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-14 13:01:20,415 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-14 13:01:20,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-14 13:01:20,416 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-14 13:01:20,417 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-09-14 13:01:20,428 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,432 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,432 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,435 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,435 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,438 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,442 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,443 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,443 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,444 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,446 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,446 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,449 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,449 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,451 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,451 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:01:20,453 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-14 13:01:20,453 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 13:01:20,454 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 13:01:20,454 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 13:01:20,454 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 13:01:20,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 13:01:20,454 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 13:01:20,454 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 13:01:20,454 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 13:01:20,455 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 88 transitions, 221 flow [2020-09-14 13:01:20,456 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-09-14 13:01:20,476 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-09-14 13:01:20,476 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-14 13:01:20,478 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. [2020-09-14 13:01:20,483 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 88 places, 88 transitions, 221 flow [2020-09-14 13:01:20,508 INFO L129 PetriNetUnfolder]: 16/132 cut-off events. [2020-09-14 13:01:20,508 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-09-14 13:01:20,511 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. [2020-09-14 13:01:20,516 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4940 [2020-09-14 13:01:20,517 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 13:01:22,262 INFO L206 etLargeBlockEncoding]: Checked pairs total: 11021 [2020-09-14 13:01:22,263 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-09-14 13:01:22,264 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 44 transitions, 133 flow [2020-09-14 13:01:31,638 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 45100 states. [2020-09-14 13:01:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 45100 states. [2020-09-14 13:01:31,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-14 13:01:31,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:31,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:31,639 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]=== [2020-09-14 13:01:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:31,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1689394107, now seen corresponding path program 1 times [2020-09-14 13:01:31,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:31,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651785649] [2020-09-14 13:01:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:31,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651785649] [2020-09-14 13:01:31,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:31,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:31,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080267425] [2020-09-14 13:01:31,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:01:31,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:31,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:01:31,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:01:31,704 INFO L87 Difference]: Start difference. First operand 45100 states. Second operand 5 states. [2020-09-14 13:01:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:32,195 INFO L93 Difference]: Finished difference Result 50507 states and 283723 transitions. [2020-09-14 13:01:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:01:32,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-14 13:01:32,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:32,441 INFO L225 Difference]: With dead ends: 50507 [2020-09-14 13:01:32,441 INFO L226 Difference]: Without dead ends: 50507 [2020-09-14 13:01:32,441 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 [2020-09-14 13:01:35,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50507 states. [2020-09-14 13:01:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50507 to 39997. [2020-09-14 13:01:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39997 states. [2020-09-14 13:01:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39997 states to 39997 states and 225588 transitions. [2020-09-14 13:01:36,725 INFO L78 Accepts]: Start accepts. Automaton has 39997 states and 225588 transitions. Word has length 7 [2020-09-14 13:01:36,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:36,725 INFO L479 AbstractCegarLoop]: Abstraction has 39997 states and 225588 transitions. [2020-09-14 13:01:36,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 13:01:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 39997 states and 225588 transitions. [2020-09-14 13:01:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 13:01:36,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:36,726 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:36,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-14 13:01:36,727 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]=== [2020-09-14 13:01:36,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:36,727 INFO L82 PathProgramCache]: Analyzing trace with hash 10078299, now seen corresponding path program 1 times [2020-09-14 13:01:36,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:36,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813923122] [2020-09-14 13:01:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:36,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813923122] [2020-09-14 13:01:36,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:36,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:36,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899813908] [2020-09-14 13:01:36,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 13:01:36,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:36,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 13:01:36,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 13:01:36,782 INFO L87 Difference]: Start difference. First operand 39997 states and 225588 transitions. Second operand 4 states. [2020-09-14 13:01:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:39,303 INFO L93 Difference]: Finished difference Result 56104 states and 316572 transitions. [2020-09-14 13:01:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 13:01:39,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-14 13:01:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:39,548 INFO L225 Difference]: With dead ends: 56104 [2020-09-14 13:01:39,548 INFO L226 Difference]: Without dead ends: 56104 [2020-09-14 13:01:39,548 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 [2020-09-14 13:01:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56104 states. [2020-09-14 13:01:42,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56104 to 48029. [2020-09-14 13:01:42,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48029 states. [2020-09-14 13:01:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48029 states to 48029 states and 271277 transitions. [2020-09-14 13:01:43,196 INFO L78 Accepts]: Start accepts. Automaton has 48029 states and 271277 transitions. Word has length 9 [2020-09-14 13:01:43,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:43,197 INFO L479 AbstractCegarLoop]: Abstraction has 48029 states and 271277 transitions. [2020-09-14 13:01:43,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 13:01:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 48029 states and 271277 transitions. [2020-09-14 13:01:43,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 13:01:43,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:43,197 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:43,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-14 13:01:43,198 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]=== [2020-09-14 13:01:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:43,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1370666711, now seen corresponding path program 1 times [2020-09-14 13:01:43,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:43,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9849524] [2020-09-14 13:01:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-14 13:01:43,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9849524] [2020-09-14 13:01:43,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:43,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:43,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952136978] [2020-09-14 13:01:43,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:01:43,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:43,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:01:43,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:01:43,268 INFO L87 Difference]: Start difference. First operand 48029 states and 271277 transitions. Second operand 5 states. [2020-09-14 13:01:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:43,783 INFO L93 Difference]: Finished difference Result 60653 states and 341167 transitions. [2020-09-14 13:01:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:01:43,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-14 13:01:43,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:44,072 INFO L225 Difference]: With dead ends: 60653 [2020-09-14 13:01:44,072 INFO L226 Difference]: Without dead ends: 60653 [2020-09-14 13:01:44,072 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 [2020-09-14 13:01:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60653 states. [2020-09-14 13:01:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60653 to 50928. [2020-09-14 13:01:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50928 states. [2020-09-14 13:01:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50928 states to 50928 states and 287199 transitions. [2020-09-14 13:01:50,337 INFO L78 Accepts]: Start accepts. Automaton has 50928 states and 287199 transitions. Word has length 10 [2020-09-14 13:01:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:50,337 INFO L479 AbstractCegarLoop]: Abstraction has 50928 states and 287199 transitions. [2020-09-14 13:01:50,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 13:01:50,337 INFO L276 IsEmpty]: Start isEmpty. Operand 50928 states and 287199 transitions. [2020-09-14 13:01:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-14 13:01:50,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:50,338 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:50,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-14 13:01:50,339 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]=== [2020-09-14 13:01:50,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:50,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1344276643, now seen corresponding path program 1 times [2020-09-14 13:01:50,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:50,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362674546] [2020-09-14 13:01:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-14 13:01:50,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362674546] [2020-09-14 13:01:50,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:50,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:50,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976080954] [2020-09-14 13:01:50,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 13:01:50,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:50,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 13:01:50,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 13:01:50,406 INFO L87 Difference]: Start difference. First operand 50928 states and 287199 transitions. Second operand 4 states. [2020-09-14 13:01:51,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:51,088 INFO L93 Difference]: Finished difference Result 71415 states and 402930 transitions. [2020-09-14 13:01:51,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 13:01:51,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-14 13:01:51,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:51,405 INFO L225 Difference]: With dead ends: 71415 [2020-09-14 13:01:51,406 INFO L226 Difference]: Without dead ends: 71415 [2020-09-14 13:01:51,406 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 [2020-09-14 13:01:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71415 states. [2020-09-14 13:01:57,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71415 to 62439. [2020-09-14 13:01:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62439 states. [2020-09-14 13:01:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62439 states to 62439 states and 352729 transitions. [2020-09-14 13:01:58,078 INFO L78 Accepts]: Start accepts. Automaton has 62439 states and 352729 transitions. Word has length 12 [2020-09-14 13:01:58,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:58,079 INFO L479 AbstractCegarLoop]: Abstraction has 62439 states and 352729 transitions. [2020-09-14 13:01:58,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 13:01:58,079 INFO L276 IsEmpty]: Start isEmpty. Operand 62439 states and 352729 transitions. [2020-09-14 13:01:58,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 13:01:58,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:58,080 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:58,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-14 13:01:58,081 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]=== [2020-09-14 13:01:58,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:58,081 INFO L82 PathProgramCache]: Analyzing trace with hash 559710068, now seen corresponding path program 1 times [2020-09-14 13:01:58,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:58,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59359795] [2020-09-14 13:01:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:58,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59359795] [2020-09-14 13:01:58,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735402726] [2020-09-14 13:01:58,147 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 [2020-09-14 13:01:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:58,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-14 13:01:58,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-14 13:01:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:01:58,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-14 13:01:58,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-09-14 13:01:58,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745666049] [2020-09-14 13:01:58,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-14 13:01:58,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:58,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-14 13:01:58,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-14 13:01:58,235 INFO L87 Difference]: Start difference. First operand 62439 states and 352729 transitions. Second operand 6 states. [2020-09-14 13:01:58,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:58,433 INFO L93 Difference]: Finished difference Result 8161 states and 34918 transitions. [2020-09-14 13:01:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-14 13:01:58,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-14 13:01:58,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:58,466 INFO L225 Difference]: With dead ends: 8161 [2020-09-14 13:01:58,466 INFO L226 Difference]: Without dead ends: 8161 [2020-09-14 13:01:58,467 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 [2020-09-14 13:01:58,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8161 states. [2020-09-14 13:01:58,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8161 to 6538. [2020-09-14 13:01:58,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6538 states. [2020-09-14 13:01:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6538 states to 6538 states and 27580 transitions. [2020-09-14 13:01:58,734 INFO L78 Accepts]: Start accepts. Automaton has 6538 states and 27580 transitions. Word has length 13 [2020-09-14 13:01:58,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:58,735 INFO L479 AbstractCegarLoop]: Abstraction has 6538 states and 27580 transitions. [2020-09-14 13:01:58,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-14 13:01:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 6538 states and 27580 transitions. [2020-09-14 13:01:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-14 13:01:58,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:58,736 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:58,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-14 13:01:58,943 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]=== [2020-09-14 13:01:58,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:58,943 INFO L82 PathProgramCache]: Analyzing trace with hash -658320024, now seen corresponding path program 1 times [2020-09-14 13:01:58,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:58,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109672300] [2020-09-14 13:01:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-14 13:01:59,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109672300] [2020-09-14 13:01:59,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:59,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:59,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383142995] [2020-09-14 13:01:59,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:01:59,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:59,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:01:59,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:01:59,011 INFO L87 Difference]: Start difference. First operand 6538 states and 27580 transitions. Second operand 5 states. [2020-09-14 13:01:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:59,149 INFO L93 Difference]: Finished difference Result 11626 states and 49057 transitions. [2020-09-14 13:01:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:01:59,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-14 13:01:59,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:59,179 INFO L225 Difference]: With dead ends: 11626 [2020-09-14 13:01:59,179 INFO L226 Difference]: Without dead ends: 11626 [2020-09-14 13:01:59,179 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 [2020-09-14 13:01:59,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11626 states. [2020-09-14 13:01:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11626 to 7402. [2020-09-14 13:01:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7402 states. [2020-09-14 13:01:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 31270 transitions. [2020-09-14 13:01:59,426 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 31270 transitions. Word has length 13 [2020-09-14 13:01:59,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:59,427 INFO L479 AbstractCegarLoop]: Abstraction has 7402 states and 31270 transitions. [2020-09-14 13:01:59,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 13:01:59,427 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 31270 transitions. [2020-09-14 13:01:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-14 13:01:59,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:59,429 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:59,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-14 13:01:59,429 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]=== [2020-09-14 13:01:59,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:59,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1285367916, now seen corresponding path program 1 times [2020-09-14 13:01:59,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:59,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089902801] [2020-09-14 13:01:59,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-14 13:01:59,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089902801] [2020-09-14 13:01:59,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:59,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:59,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542984125] [2020-09-14 13:01:59,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 13:01:59,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:59,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 13:01:59,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 13:01:59,490 INFO L87 Difference]: Start difference. First operand 7402 states and 31270 transitions. Second operand 4 states. [2020-09-14 13:01:59,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:01:59,615 INFO L93 Difference]: Finished difference Result 6970 states and 29425 transitions. [2020-09-14 13:01:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 13:01:59,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-14 13:01:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:01:59,645 INFO L225 Difference]: With dead ends: 6970 [2020-09-14 13:01:59,645 INFO L226 Difference]: Without dead ends: 6970 [2020-09-14 13:01:59,646 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 [2020-09-14 13:01:59,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6970 states. [2020-09-14 13:01:59,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6970 to 6106. [2020-09-14 13:01:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6106 states. [2020-09-14 13:01:59,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6106 states to 6106 states and 25735 transitions. [2020-09-14 13:01:59,906 INFO L78 Accepts]: Start accepts. Automaton has 6106 states and 25735 transitions. Word has length 15 [2020-09-14 13:01:59,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:01:59,906 INFO L479 AbstractCegarLoop]: Abstraction has 6106 states and 25735 transitions. [2020-09-14 13:01:59,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 13:01:59,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6106 states and 25735 transitions. [2020-09-14 13:01:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-14 13:01:59,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:01:59,908 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:01:59,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-14 13:01:59,909 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]=== [2020-09-14 13:01:59,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:01:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash 753296421, now seen corresponding path program 1 times [2020-09-14 13:01:59,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:01:59,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278380259] [2020-09-14 13:01:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:01:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:01:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-14 13:01:59,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278380259] [2020-09-14 13:01:59,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:01:59,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:01:59,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288494194] [2020-09-14 13:01:59,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:01:59,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:01:59,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:01:59,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:01:59,980 INFO L87 Difference]: Start difference. First operand 6106 states and 25735 transitions. Second operand 5 states. [2020-09-14 13:02:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:02:00,112 INFO L93 Difference]: Finished difference Result 10825 states and 45769 transitions. [2020-09-14 13:02:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:02:00,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-14 13:02:00,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:02:00,139 INFO L225 Difference]: With dead ends: 10825 [2020-09-14 13:02:00,140 INFO L226 Difference]: Without dead ends: 10825 [2020-09-14 13:02:00,142 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 [2020-09-14 13:02:00,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2020-09-14 13:02:00,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 6916. [2020-09-14 13:02:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6916 states. [2020-09-14 13:02:00,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6916 states to 6916 states and 29245 transitions. [2020-09-14 13:02:00,368 INFO L78 Accepts]: Start accepts. Automaton has 6916 states and 29245 transitions. Word has length 16 [2020-09-14 13:02:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:02:00,368 INFO L479 AbstractCegarLoop]: Abstraction has 6916 states and 29245 transitions. [2020-09-14 13:02:00,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 13:02:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 6916 states and 29245 transitions. [2020-09-14 13:02:00,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-14 13:02:00,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:02:00,372 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:02:00,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-14 13:02:00,373 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]=== [2020-09-14 13:02:00,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:02:00,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1848176610, now seen corresponding path program 1 times [2020-09-14 13:02:00,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:02:00,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297223472] [2020-09-14 13:02:00,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:02:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 13:02:00,392 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 13:02:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-14 13:02:00,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-14 13:02:00,406 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-14 13:02:00,407 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-14 13:02:00,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-14 13:02:00,407 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-09-14 13:02:00,408 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-09-14 13:02:00,416 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,417 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,417 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,418 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,418 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,418 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,419 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,419 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,419 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,420 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,420 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,420 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,420 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,420 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,420 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,420 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,421 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,421 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,421 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,422 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,422 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,423 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,423 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,423 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,424 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,424 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,424 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,424 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,425 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,425 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,425 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,425 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,425 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,425 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,426 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,426 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,426 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,426 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,426 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,426 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,426 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,427 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,427 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,427 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,427 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,427 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,428 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,428 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,428 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,438 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,438 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,438 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,443 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,443 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,444 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,444 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,444 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,445 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,445 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,445 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,445 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,446 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,446 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,447 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-14 13:02:00,450 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-09-14 13:02:00,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-14 13:02:00,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-14 13:02:00,451 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-14 13:02:00,451 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-14 13:02:00,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-14 13:02:00,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-14 13:02:00,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-14 13:02:00,451 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-14 13:02:00,452 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 102 transitions, 264 flow [2020-09-14 13:02:00,453 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-09-14 13:02:00,470 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-09-14 13:02:00,470 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-14 13:02:00,473 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. [2020-09-14 13:02:00,480 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 102 transitions, 264 flow [2020-09-14 13:02:00,497 INFO L129 PetriNetUnfolder]: 19/155 cut-off events. [2020-09-14 13:02:00,497 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-09-14 13:02:00,499 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. [2020-09-14 13:02:00,507 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 7020 [2020-09-14 13:02:00,507 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-14 13:02:03,103 INFO L206 etLargeBlockEncoding]: Checked pairs total: 17367 [2020-09-14 13:02:03,104 INFO L214 etLargeBlockEncoding]: Total number of compositions: 72 [2020-09-14 13:02:03,106 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 53 transitions, 166 flow [2020-09-14 13:08:32,308 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 270604 states. [2020-09-14 13:08:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 270604 states. [2020-09-14 13:08:32,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-09-14 13:08:32,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:08:32,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:08:32,309 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 13:08:32,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:08:32,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1745298182, now seen corresponding path program 1 times [2020-09-14 13:08:32,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:08:32,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097829354] [2020-09-14 13:08:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:08:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:08:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:08:32,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097829354] [2020-09-14 13:08:32,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:08:32,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:08:32,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522689353] [2020-09-14 13:08:32,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:08:32,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:08:32,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:08:32,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:08:32,368 INFO L87 Difference]: Start difference. First operand 270604 states. Second operand 5 states. [2020-09-14 13:08:44,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:08:44,067 INFO L93 Difference]: Finished difference Result 283913 states and 1878243 transitions. [2020-09-14 13:08:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:08:44,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-09-14 13:08:44,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:08:45,578 INFO L225 Difference]: With dead ends: 283913 [2020-09-14 13:08:45,579 INFO L226 Difference]: Without dead ends: 283913 [2020-09-14 13:08:45,579 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 [2020-09-14 13:09:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283913 states. [2020-09-14 13:09:27,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283913 to 232423. [2020-09-14 13:09:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232423 states. [2020-09-14 13:09:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232423 states to 232423 states and 1542529 transitions. [2020-09-14 13:09:38,763 INFO L78 Accepts]: Start accepts. Automaton has 232423 states and 1542529 transitions. Word has length 7 [2020-09-14 13:09:38,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:09:38,763 INFO L479 AbstractCegarLoop]: Abstraction has 232423 states and 1542529 transitions. [2020-09-14 13:09:38,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-14 13:09:38,764 INFO L276 IsEmpty]: Start isEmpty. Operand 232423 states and 1542529 transitions. [2020-09-14 13:09:38,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-14 13:09:38,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:09:38,764 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:09:38,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-14 13:09:38,765 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 13:09:38,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:09:38,765 INFO L82 PathProgramCache]: Analyzing trace with hash 2100661726, now seen corresponding path program 1 times [2020-09-14 13:09:38,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:09:38,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942164839] [2020-09-14 13:09:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:09:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:09:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-14 13:09:38,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942164839] [2020-09-14 13:09:38,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:09:38,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:09:38,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930293779] [2020-09-14 13:09:38,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-14 13:09:38,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:09:38,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-14 13:09:38,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-14 13:09:38,852 INFO L87 Difference]: Start difference. First operand 232423 states and 1542529 transitions. Second operand 4 states. [2020-09-14 13:09:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:09:55,375 INFO L93 Difference]: Finished difference Result 334390 states and 2219305 transitions. [2020-09-14 13:09:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-14 13:09:55,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-09-14 13:09:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:09:57,155 INFO L225 Difference]: With dead ends: 334390 [2020-09-14 13:09:57,155 INFO L226 Difference]: Without dead ends: 334390 [2020-09-14 13:09:57,156 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 [2020-09-14 13:10:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334390 states. [2020-09-14 13:10:39,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334390 to 289718. [2020-09-14 13:10:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289718 states. [2020-09-14 13:10:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289718 states to 289718 states and 1923958 transitions. [2020-09-14 13:10:58,811 INFO L78 Accepts]: Start accepts. Automaton has 289718 states and 1923958 transitions. Word has length 9 [2020-09-14 13:10:58,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-14 13:10:58,812 INFO L479 AbstractCegarLoop]: Abstraction has 289718 states and 1923958 transitions. [2020-09-14 13:10:58,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-14 13:10:58,812 INFO L276 IsEmpty]: Start isEmpty. Operand 289718 states and 1923958 transitions. [2020-09-14 13:10:58,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-14 13:10:58,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-14 13:10:58,812 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-14 13:10:58,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-14 13:10:58,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-14 13:10:58,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-14 13:10:58,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1805635058, now seen corresponding path program 1 times [2020-09-14 13:10:58,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-14 13:10:58,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806531339] [2020-09-14 13:10:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-14 13:10:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-14 13:10:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-14 13:10:58,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806531339] [2020-09-14 13:10:58,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-14 13:10:58,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-14 13:10:58,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362762517] [2020-09-14 13:10:58,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-14 13:10:58,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-14 13:10:58,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-14 13:10:58,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-14 13:10:58,866 INFO L87 Difference]: Start difference. First operand 289718 states and 1923958 transitions. Second operand 5 states. [2020-09-14 13:11:12,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-14 13:11:12,605 INFO L93 Difference]: Finished difference Result 350111 states and 2318007 transitions. [2020-09-14 13:11:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-14 13:11:12,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-14 13:11:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-14 13:11:14,596 INFO L225 Difference]: With dead ends: 350111 [2020-09-14 13:11:14,596 INFO L226 Difference]: Without dead ends: 350111 [2020-09-14 13:11:14,597 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 [2020-09-14 13:11:59,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350111 states. [2020-09-14 13:12:09,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350111 to 301623. [2020-09-14 13:12:09,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301623 states.