/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 08:23:39,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 08:23:39,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 08:23:40,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 08:23:40,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 08:23:40,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 08:23:40,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 08:23:40,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 08:23:40,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 08:23:40,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 08:23:40,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 08:23:40,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 08:23:40,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 08:23:40,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 08:23:40,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 08:23:40,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 08:23:40,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 08:23:40,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 08:23:40,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 08:23:40,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 08:23:40,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 08:23:40,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 08:23:40,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 08:23:40,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 08:23:40,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 08:23:40,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 08:23:40,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 08:23:40,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 08:23:40,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 08:23:40,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 08:23:40,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 08:23:40,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 08:23:40,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 08:23:40,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 08:23:40,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 08:23:40,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 08:23:40,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 08:23:40,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 08:23:40,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 08:23:40,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 08:23:40,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 08:23:40,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-27 08:23:40,088 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 08:23:40,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 08:23:40,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 08:23:40,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 08:23:40,089 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 08:23:40,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 08:23:40,090 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 08:23:40,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 08:23:40,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 08:23:40,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 08:23:40,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 08:23:40,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 08:23:40,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 08:23:40,091 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 08:23:40,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 08:23:40,092 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 08:23:40,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 08:23:40,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 08:23:40,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 08:23:40,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 08:23:40,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 08:23:40,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 08:23:40,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 08:23:40,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 08:23:40,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 08:23:40,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 08:23:40,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 08:23:40,094 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-27 08:23:40,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 08:23:40,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 08:23:40,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 08:23:40,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 08:23:40,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 08:23:40,434 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 08:23:40,434 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 08:23:40,435 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-27 08:23:40,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17497f13/8a1398d6f7204add88c4fea0cc8e3b97/FLAG24b915aa5 [2019-12-27 08:23:41,101 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 08:23:41,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-27 08:23:41,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17497f13/8a1398d6f7204add88c4fea0cc8e3b97/FLAG24b915aa5 [2019-12-27 08:23:41,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17497f13/8a1398d6f7204add88c4fea0cc8e3b97 [2019-12-27 08:23:41,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 08:23:41,333 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 08:23:41,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 08:23:41,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 08:23:41,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 08:23:41,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:23:41" (1/1) ... [2019-12-27 08:23:41,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614e4f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:41, skipping insertion in model container [2019-12-27 08:23:41,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 08:23:41" (1/1) ... [2019-12-27 08:23:41,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 08:23:41,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 08:23:42,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:23:42,082 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 08:23:42,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 08:23:42,360 INFO L208 MainTranslator]: Completed translation [2019-12-27 08:23:42,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42 WrapperNode [2019-12-27 08:23:42,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 08:23:42,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 08:23:42,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 08:23:42,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 08:23:42,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42" (1/1) ... [2019-12-27 08:23:42,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42" (1/1) ... [2019-12-27 08:23:42,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 08:23:42,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 08:23:42,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 08:23:42,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 08:23:42,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42" (1/1) ... [2019-12-27 08:23:42,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42" (1/1) ... [2019-12-27 08:23:42,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42" (1/1) ... [2019-12-27 08:23:42,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42" (1/1) ... [2019-12-27 08:23:42,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42" (1/1) ... [2019-12-27 08:23:42,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42" (1/1) ... [2019-12-27 08:23:42,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42" (1/1) ... [2019-12-27 08:23:42,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 08:23:42,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 08:23:42,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 08:23:42,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 08:23:42,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 08:23:42,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 08:23:42,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 08:23:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 08:23:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2019-12-27 08:23:42,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2019-12-27 08:23:42,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 08:23:42,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 08:23:42,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 08:23:42,557 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 08:23:43,090 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 08:23:43,093 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-27 08:23:43,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:23:43 BoogieIcfgContainer [2019-12-27 08:23:43,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 08:23:43,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 08:23:43,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 08:23:43,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 08:23:43,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 08:23:41" (1/3) ... [2019-12-27 08:23:43,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3afbf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:23:43, skipping insertion in model container [2019-12-27 08:23:43,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 08:23:42" (2/3) ... [2019-12-27 08:23:43,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e3afbf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 08:23:43, skipping insertion in model container [2019-12-27 08:23:43,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 08:23:43" (3/3) ... [2019-12-27 08:23:43,105 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2019-12-27 08:23:43,115 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 08:23:43,116 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 08:23:43,123 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 08:23:43,124 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 08:23:43,154 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,154 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,154 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,154 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,156 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,156 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,157 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,157 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,158 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,158 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,158 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,158 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,159 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,159 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,159 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,160 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,160 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,160 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,160 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,160 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,161 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,164 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,165 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,165 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,165 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,165 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,165 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,166 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,166 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 08:23:43,183 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 08:23:43,198 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 08:23:43,199 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 08:23:43,199 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 08:23:43,199 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 08:23:43,199 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 08:23:43,199 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 08:23:43,199 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 08:23:43,199 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 08:23:43,213 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions [2019-12-27 08:23:43,214 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions [2019-12-27 08:23:43,273 INFO L132 PetriNetUnfolder]: 7/84 cut-off events. [2019-12-27 08:23:43,275 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 08:23:43,283 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2019-12-27 08:23:43,287 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions [2019-12-27 08:23:43,331 INFO L132 PetriNetUnfolder]: 7/84 cut-off events. [2019-12-27 08:23:43,332 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 08:23:43,333 INFO L76 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 7/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2019-12-27 08:23:43,335 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 640 [2019-12-27 08:23:43,336 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-27 08:23:44,827 WARN L192 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-12-27 08:23:45,099 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-12-27 08:23:45,602 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-12-27 08:23:45,839 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-27 08:23:46,303 WARN L192 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-27 08:23:46,687 WARN L192 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-12-27 08:23:47,944 WARN L192 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2019-12-27 08:23:48,406 WARN L192 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-27 08:23:48,410 INFO L206 etLargeBlockEncoding]: Checked pairs total: 510 [2019-12-27 08:23:48,410 INFO L214 etLargeBlockEncoding]: Total number of compositions: 77 [2019-12-27 08:23:48,414 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 13 transitions [2019-12-27 08:23:48,421 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17 states. [2019-12-27 08:23:48,423 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-12-27 08:23:48,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 08:23:48,428 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:23:48,429 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:23:48,429 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:23:48,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:23:48,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1101690005, now seen corresponding path program 1 times [2019-12-27 08:23:48,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:23:48,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304549854] [2019-12-27 08:23:48,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:23:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:23:48,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:23:48,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304549854] [2019-12-27 08:23:48,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:23:48,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 08:23:48,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106961548] [2019-12-27 08:23:48,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 08:23:48,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:23:48,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 08:23:48,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 08:23:48,667 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-12-27 08:23:48,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:23:48,703 INFO L93 Difference]: Finished difference Result 20 states and 36 transitions. [2019-12-27 08:23:48,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 08:23:48,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 08:23:48,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:23:48,717 INFO L225 Difference]: With dead ends: 20 [2019-12-27 08:23:48,717 INFO L226 Difference]: Without dead ends: 20 [2019-12-27 08:23:48,719 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 08:23:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-27 08:23:48,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-27 08:23:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-27 08:23:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 36 transitions. [2019-12-27 08:23:48,758 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 36 transitions. Word has length 8 [2019-12-27 08:23:48,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:23:48,758 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 36 transitions. [2019-12-27 08:23:48,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 08:23:48,759 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 36 transitions. [2019-12-27 08:23:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 08:23:48,759 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:23:48,760 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:23:48,760 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:23:48,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:23:48,760 INFO L82 PathProgramCache]: Analyzing trace with hash -176981712, now seen corresponding path program 1 times [2019-12-27 08:23:48,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:23:48,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474901831] [2019-12-27 08:23:48,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:23:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:23:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 08:23:48,869 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474901831] [2019-12-27 08:23:48,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 08:23:48,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 08:23:48,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239754969] [2019-12-27 08:23:48,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 08:23:48,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:23:48,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 08:23:48,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 08:23:48,875 INFO L87 Difference]: Start difference. First operand 20 states and 36 transitions. Second operand 3 states. [2019-12-27 08:23:48,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:23:48,893 INFO L93 Difference]: Finished difference Result 28 states and 52 transitions. [2019-12-27 08:23:48,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 08:23:48,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 08:23:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:23:48,895 INFO L225 Difference]: With dead ends: 28 [2019-12-27 08:23:48,895 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 08:23:48,896 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 08:23:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 08:23:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2019-12-27 08:23:48,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-27 08:23:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2019-12-27 08:23:48,907 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 44 transitions. Word has length 9 [2019-12-27 08:23:48,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:23:48,907 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 44 transitions. [2019-12-27 08:23:48,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 08:23:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 44 transitions. [2019-12-27 08:23:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 08:23:48,908 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:23:48,909 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:23:48,909 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:23:48,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:23:48,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1360713053, now seen corresponding path program 1 times [2019-12-27 08:23:48,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:23:48,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145317216] [2019-12-27 08:23:48,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:23:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:23:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:23:49,051 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145317216] [2019-12-27 08:23:49,052 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118328761] [2019-12-27 08:23:49,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:23:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:23:49,158 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-27 08:23:49,164 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:23:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 08:23:49,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:23:49,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2019-12-27 08:23:49,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642203100] [2019-12-27 08:23:49,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 08:23:49,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:23:49,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 08:23:49,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-27 08:23:49,198 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 8 states. [2019-12-27 08:23:49,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:23:49,424 INFO L93 Difference]: Finished difference Result 64 states and 124 transitions. [2019-12-27 08:23:49,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-27 08:23:49,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-12-27 08:23:49,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:23:49,426 INFO L225 Difference]: With dead ends: 64 [2019-12-27 08:23:49,427 INFO L226 Difference]: Without dead ends: 64 [2019-12-27 08:23:49,429 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2019-12-27 08:23:49,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-27 08:23:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 32. [2019-12-27 08:23:49,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-27 08:23:49,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 60 transitions. [2019-12-27 08:23:49,436 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 60 transitions. Word has length 11 [2019-12-27 08:23:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:23:49,437 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 60 transitions. [2019-12-27 08:23:49,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 08:23:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 60 transitions. [2019-12-27 08:23:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-27 08:23:49,438 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:23:49,438 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:23:49,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:23:49,639 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:23:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:23:49,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1616632394, now seen corresponding path program 2 times [2019-12-27 08:23:49,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:23:49,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797150307] [2019-12-27 08:23:49,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:23:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:23:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:23:49,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797150307] [2019-12-27 08:23:49,764 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50803640] [2019-12-27 08:23:49,764 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2019-12-27 08:23:49,855 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:23:49,855 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:23:49,857 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 08:23:49,859 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:23:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 08:23:49,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:23:49,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2019-12-27 08:23:49,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908240901] [2019-12-27 08:23:49,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-27 08:23:49,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:23:49,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-27 08:23:49,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-12-27 08:23:49,896 INFO L87 Difference]: Start difference. First operand 32 states and 60 transitions. Second operand 11 states. [2019-12-27 08:23:50,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:23:50,459 INFO L93 Difference]: Finished difference Result 112 states and 220 transitions. [2019-12-27 08:23:50,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-12-27 08:23:50,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-12-27 08:23:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:23:50,463 INFO L225 Difference]: With dead ends: 112 [2019-12-27 08:23:50,463 INFO L226 Difference]: Without dead ends: 112 [2019-12-27 08:23:50,466 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=445, Invalid=1037, Unknown=0, NotChecked=0, Total=1482 [2019-12-27 08:23:50,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-12-27 08:23:50,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 40. [2019-12-27 08:23:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-27 08:23:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 76 transitions. [2019-12-27 08:23:50,475 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 76 transitions. Word has length 13 [2019-12-27 08:23:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:23:50,475 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 76 transitions. [2019-12-27 08:23:50,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-27 08:23:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 76 transitions. [2019-12-27 08:23:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-27 08:23:50,476 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:23:50,476 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:23:50,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:23:50,681 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:23:50,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:23:50,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1552984073, now seen corresponding path program 3 times [2019-12-27 08:23:50,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:23:50,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929507981] [2019-12-27 08:23:50,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:23:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:23:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:23:50,784 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929507981] [2019-12-27 08:23:50,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919867411] [2019-12-27 08:23:50,785 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2019-12-27 08:23:50,860 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-27 08:23:50,861 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:23:50,862 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-27 08:23:50,864 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:23:50,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-27 08:23:50,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:23:50,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2019-12-27 08:23:50,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571079497] [2019-12-27 08:23:50,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-27 08:23:50,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:23:50,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-27 08:23:50,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-12-27 08:23:50,889 INFO L87 Difference]: Start difference. First operand 40 states and 76 transitions. Second operand 12 states. [2019-12-27 08:23:51,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:23:51,494 INFO L93 Difference]: Finished difference Result 200 states and 392 transitions. [2019-12-27 08:23:51,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-12-27 08:23:51,495 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-12-27 08:23:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:23:51,498 INFO L225 Difference]: With dead ends: 200 [2019-12-27 08:23:51,498 INFO L226 Difference]: Without dead ends: 196 [2019-12-27 08:23:51,500 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1282, Unknown=0, NotChecked=0, Total=1806 [2019-12-27 08:23:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2019-12-27 08:23:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 65. [2019-12-27 08:23:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-27 08:23:51,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 135 transitions. [2019-12-27 08:23:51,511 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 135 transitions. Word has length 15 [2019-12-27 08:23:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:23:51,511 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 135 transitions. [2019-12-27 08:23:51,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-27 08:23:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 135 transitions. [2019-12-27 08:23:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-27 08:23:51,512 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:23:51,512 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:23:51,721 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:23:51,722 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:23:51,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:23:51,722 INFO L82 PathProgramCache]: Analyzing trace with hash -867499506, now seen corresponding path program 4 times [2019-12-27 08:23:51,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:23:51,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684932206] [2019-12-27 08:23:51,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:23:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:23:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:23:51,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684932206] [2019-12-27 08:23:51,836 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253347474] [2019-12-27 08:23:51,836 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:23:51,898 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 08:23:51,899 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:23:51,900 INFO L264 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 08:23:51,901 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:23:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-27 08:23:51,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:23:51,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2019-12-27 08:23:51,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939095970] [2019-12-27 08:23:51,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-27 08:23:51,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:23:51,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-27 08:23:51,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-12-27 08:23:51,973 INFO L87 Difference]: Start difference. First operand 65 states and 135 transitions. Second operand 15 states. [2019-12-27 08:23:53,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:23:53,214 INFO L93 Difference]: Finished difference Result 235 states and 466 transitions. [2019-12-27 08:23:53,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-12-27 08:23:53,214 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2019-12-27 08:23:53,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:23:53,216 INFO L225 Difference]: With dead ends: 235 [2019-12-27 08:23:53,217 INFO L226 Difference]: Without dead ends: 235 [2019-12-27 08:23:53,220 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1720, Invalid=4442, Unknown=0, NotChecked=0, Total=6162 [2019-12-27 08:23:53,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-12-27 08:23:53,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 59. [2019-12-27 08:23:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-12-27 08:23:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2019-12-27 08:23:53,229 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 16 [2019-12-27 08:23:53,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:23:53,230 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2019-12-27 08:23:53,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-27 08:23:53,230 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2019-12-27 08:23:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-27 08:23:53,231 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:23:53,231 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:23:53,434 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:23:53,435 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:23:53,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:23:53,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2055665343, now seen corresponding path program 5 times [2019-12-27 08:23:53,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:23:53,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810057955] [2019-12-27 08:23:53,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:23:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:23:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:23:53,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810057955] [2019-12-27 08:23:53,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113638660] [2019-12-27 08:23:53,584 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:23:53,679 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-27 08:23:53,679 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:23:53,680 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 08:23:53,683 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:23:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-27 08:23:53,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:23:53,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 16 [2019-12-27 08:23:53,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131637180] [2019-12-27 08:23:53,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-27 08:23:53,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:23:53,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-27 08:23:53,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2019-12-27 08:23:53,739 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 16 states. [2019-12-27 08:23:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:23:55,109 INFO L93 Difference]: Finished difference Result 397 states and 785 transitions. [2019-12-27 08:23:55,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-12-27 08:23:55,109 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2019-12-27 08:23:55,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:23:55,112 INFO L225 Difference]: With dead ends: 397 [2019-12-27 08:23:55,113 INFO L226 Difference]: Without dead ends: 391 [2019-12-27 08:23:55,115 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2528 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1775, Invalid=4705, Unknown=0, NotChecked=0, Total=6480 [2019-12-27 08:23:55,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-12-27 08:23:55,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 100. [2019-12-27 08:23:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-12-27 08:23:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 211 transitions. [2019-12-27 08:23:55,127 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 211 transitions. Word has length 18 [2019-12-27 08:23:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:23:55,127 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 211 transitions. [2019-12-27 08:23:55,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-27 08:23:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 211 transitions. [2019-12-27 08:23:55,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 08:23:55,129 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:23:55,129 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:23:55,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:23:55,332 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:23:55,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:23:55,333 INFO L82 PathProgramCache]: Analyzing trace with hash 729250308, now seen corresponding path program 6 times [2019-12-27 08:23:55,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:23:55,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201685442] [2019-12-27 08:23:55,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:23:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:23:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:23:55,474 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201685442] [2019-12-27 08:23:55,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128612349] [2019-12-27 08:23:55,475 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:23:55,555 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-27 08:23:55,555 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:23:55,556 INFO L264 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 08:23:55,557 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:23:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-27 08:23:55,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:23:55,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 19 [2019-12-27 08:23:55,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288963429] [2019-12-27 08:23:55,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-27 08:23:55,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:23:55,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-27 08:23:55,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-12-27 08:23:55,612 INFO L87 Difference]: Start difference. First operand 100 states and 211 transitions. Second operand 19 states. [2019-12-27 08:23:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:23:58,731 INFO L93 Difference]: Finished difference Result 451 states and 898 transitions. [2019-12-27 08:23:58,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2019-12-27 08:23:58,731 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2019-12-27 08:23:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:23:58,734 INFO L225 Difference]: With dead ends: 451 [2019-12-27 08:23:58,734 INFO L226 Difference]: Without dead ends: 451 [2019-12-27 08:23:58,741 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8907 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5119, Invalid=14063, Unknown=0, NotChecked=0, Total=19182 [2019-12-27 08:23:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2019-12-27 08:23:58,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 82. [2019-12-27 08:23:58,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-27 08:23:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2019-12-27 08:23:58,766 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 19 [2019-12-27 08:23:58,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:23:58,770 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2019-12-27 08:23:58,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-27 08:23:58,770 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2019-12-27 08:23:58,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-27 08:23:58,771 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:23:58,771 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:23:58,972 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:23:58,972 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:23:58,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:23:58,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1093713423, now seen corresponding path program 7 times [2019-12-27 08:23:58,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:23:58,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573499503] [2019-12-27 08:23:58,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:23:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:23:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:23:59,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573499503] [2019-12-27 08:23:59,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916958588] [2019-12-27 08:23:59,131 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:23:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:23:59,213 INFO L264 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-27 08:23:59,214 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:23:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-27 08:23:59,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:23:59,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 22 [2019-12-27 08:23:59,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402079184] [2019-12-27 08:23:59,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-27 08:23:59,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:23:59,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-27 08:23:59,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2019-12-27 08:23:59,311 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 22 states. [2019-12-27 08:24:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:24:03,579 INFO L93 Difference]: Finished difference Result 639 states and 1274 transitions. [2019-12-27 08:24:03,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2019-12-27 08:24:03,579 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2019-12-27 08:24:03,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:24:03,584 INFO L225 Difference]: With dead ends: 639 [2019-12-27 08:24:03,584 INFO L226 Difference]: Without dead ends: 639 [2019-12-27 08:24:03,592 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19012 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=10080, Invalid=28140, Unknown=0, NotChecked=0, Total=38220 [2019-12-27 08:24:03,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-12-27 08:24:03,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 94. [2019-12-27 08:24:03,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-12-27 08:24:03,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 184 transitions. [2019-12-27 08:24:03,601 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 184 transitions. Word has length 21 [2019-12-27 08:24:03,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:24:03,602 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 184 transitions. [2019-12-27 08:24:03,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-27 08:24:03,602 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 184 transitions. [2019-12-27 08:24:03,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 08:24:03,603 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:24:03,603 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:24:03,826 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:03,827 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:24:03,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:24:03,828 INFO L82 PathProgramCache]: Analyzing trace with hash -615202146, now seen corresponding path program 8 times [2019-12-27 08:24:03,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:24:03,828 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517351755] [2019-12-27 08:24:03,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:24:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:24:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:24:03,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517351755] [2019-12-27 08:24:03,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832443506] [2019-12-27 08:24:03,997 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:04,069 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:24:04,069 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:24:04,070 INFO L264 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 08:24:04,071 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:24:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-27 08:24:04,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:24:04,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 25 [2019-12-27 08:24:04,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069707942] [2019-12-27 08:24:04,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-12-27 08:24:04,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:24:04,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-12-27 08:24:04,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2019-12-27 08:24:04,164 INFO L87 Difference]: Start difference. First operand 94 states and 184 transitions. Second operand 25 states. [2019-12-27 08:24:11,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:24:11,012 INFO L93 Difference]: Finished difference Result 869 states and 1734 transitions. [2019-12-27 08:24:11,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2019-12-27 08:24:11,012 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 23 [2019-12-27 08:24:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:24:11,018 INFO L225 Difference]: With dead ends: 869 [2019-12-27 08:24:11,018 INFO L226 Difference]: Without dead ends: 869 [2019-12-27 08:24:11,023 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36612 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=18334, Invalid=51626, Unknown=0, NotChecked=0, Total=69960 [2019-12-27 08:24:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2019-12-27 08:24:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 106. [2019-12-27 08:24:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-12-27 08:24:11,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 208 transitions. [2019-12-27 08:24:11,034 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 208 transitions. Word has length 23 [2019-12-27 08:24:11,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:24:11,034 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 208 transitions. [2019-12-27 08:24:11,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-12-27 08:24:11,034 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 208 transitions. [2019-12-27 08:24:11,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-27 08:24:11,036 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:24:11,036 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:24:11,243 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:11,243 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:24:11,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:24:11,244 INFO L82 PathProgramCache]: Analyzing trace with hash -327365621, now seen corresponding path program 9 times [2019-12-27 08:24:11,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:24:11,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163267618] [2019-12-27 08:24:11,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:24:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:24:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:24:11,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163267618] [2019-12-27 08:24:11,434 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392212725] [2019-12-27 08:24:11,434 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:11,522 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-27 08:24:11,523 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:24:11,523 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 08:24:11,525 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:24:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-12-27 08:24:11,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:24:11,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6] total 24 [2019-12-27 08:24:11,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822344889] [2019-12-27 08:24:11,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-27 08:24:11,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:24:11,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-27 08:24:11,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2019-12-27 08:24:11,584 INFO L87 Difference]: Start difference. First operand 106 states and 208 transitions. Second operand 24 states. [2019-12-27 08:24:15,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:24:15,263 INFO L93 Difference]: Finished difference Result 1267 states and 2524 transitions. [2019-12-27 08:24:15,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2019-12-27 08:24:15,264 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2019-12-27 08:24:15,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:24:15,271 INFO L225 Difference]: With dead ends: 1267 [2019-12-27 08:24:15,271 INFO L226 Difference]: Without dead ends: 1259 [2019-12-27 08:24:15,273 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17285 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=9341, Invalid=26191, Unknown=0, NotChecked=0, Total=35532 [2019-12-27 08:24:15,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2019-12-27 08:24:15,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 188. [2019-12-27 08:24:15,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-27 08:24:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 398 transitions. [2019-12-27 08:24:15,289 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 398 transitions. Word has length 25 [2019-12-27 08:24:15,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:24:15,290 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 398 transitions. [2019-12-27 08:24:15,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-27 08:24:15,290 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 398 transitions. [2019-12-27 08:24:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-27 08:24:15,299 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:24:15,299 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:24:15,503 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:15,503 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:24:15,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:24:15,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1528033158, now seen corresponding path program 10 times [2019-12-27 08:24:15,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:24:15,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270184071] [2019-12-27 08:24:15,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:24:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:24:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:24:15,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270184071] [2019-12-27 08:24:15,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539961073] [2019-12-27 08:24:15,735 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:15,801 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 08:24:15,801 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:24:15,802 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-27 08:24:15,803 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:24:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-27 08:24:15,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:24:15,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 29 [2019-12-27 08:24:15,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179589829] [2019-12-27 08:24:15,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-12-27 08:24:15,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:24:15,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-12-27 08:24:15,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2019-12-27 08:24:15,914 INFO L87 Difference]: Start difference. First operand 188 states and 398 transitions. Second operand 29 states. [2019-12-27 08:24:27,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:24:27,815 INFO L93 Difference]: Finished difference Result 1400 states and 2796 transitions. [2019-12-27 08:24:27,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2019-12-27 08:24:27,816 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 26 [2019-12-27 08:24:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:24:27,824 INFO L225 Difference]: With dead ends: 1400 [2019-12-27 08:24:27,824 INFO L226 Difference]: Without dead ends: 1400 [2019-12-27 08:24:27,829 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84029 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=39039, Invalid=113451, Unknown=0, NotChecked=0, Total=152490 [2019-12-27 08:24:27,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2019-12-27 08:24:27,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 137. [2019-12-27 08:24:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-12-27 08:24:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 270 transitions. [2019-12-27 08:24:27,842 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 270 transitions. Word has length 26 [2019-12-27 08:24:27,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:24:27,842 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 270 transitions. [2019-12-27 08:24:27,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-12-27 08:24:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 270 transitions. [2019-12-27 08:24:27,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-27 08:24:27,844 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:24:27,844 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:24:28,047 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:28,047 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:24:28,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:24:28,048 INFO L82 PathProgramCache]: Analyzing trace with hash 655160301, now seen corresponding path program 11 times [2019-12-27 08:24:28,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:24:28,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719359851] [2019-12-27 08:24:28,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:24:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:24:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:24:28,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719359851] [2019-12-27 08:24:28,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804204577] [2019-12-27 08:24:28,341 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:28,393 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-12-27 08:24:28,393 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:24:28,394 INFO L264 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 08:24:28,396 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:24:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-12-27 08:24:28,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:24:28,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7] total 28 [2019-12-27 08:24:28,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130049551] [2019-12-27 08:24:28,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-27 08:24:28,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:24:28,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-27 08:24:28,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2019-12-27 08:24:28,457 INFO L87 Difference]: Start difference. First operand 137 states and 270 transitions. Second operand 28 states. [2019-12-27 08:24:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:24:34,378 INFO L93 Difference]: Finished difference Result 1982 states and 3953 transitions. [2019-12-27 08:24:34,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2019-12-27 08:24:34,379 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2019-12-27 08:24:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:24:34,389 INFO L225 Difference]: With dead ends: 1982 [2019-12-27 08:24:34,389 INFO L226 Difference]: Without dead ends: 1972 [2019-12-27 08:24:34,392 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41303 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=20189, Invalid=57931, Unknown=0, NotChecked=0, Total=78120 [2019-12-27 08:24:34,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2019-12-27 08:24:34,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 249. [2019-12-27 08:24:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2019-12-27 08:24:34,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 528 transitions. [2019-12-27 08:24:34,411 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 528 transitions. Word has length 28 [2019-12-27 08:24:34,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:24:34,411 INFO L462 AbstractCegarLoop]: Abstraction has 249 states and 528 transitions. [2019-12-27 08:24:34,412 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-27 08:24:34,412 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 528 transitions. [2019-12-27 08:24:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-27 08:24:34,413 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:24:34,413 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:24:34,625 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:34,625 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:24:34,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:24:34,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1134500648, now seen corresponding path program 12 times [2019-12-27 08:24:34,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:24:34,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614364636] [2019-12-27 08:24:34,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:24:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:24:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:24:34,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614364636] [2019-12-27 08:24:34,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844045692] [2019-12-27 08:24:34,951 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:35,066 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-12-27 08:24:35,066 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:24:35,068 INFO L264 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-27 08:24:35,069 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:24:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-27 08:24:35,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:24:35,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11] total 33 [2019-12-27 08:24:35,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878658145] [2019-12-27 08:24:35,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-12-27 08:24:35,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:24:35,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-12-27 08:24:35,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2019-12-27 08:24:35,335 INFO L87 Difference]: Start difference. First operand 249 states and 528 transitions. Second operand 33 states. [2019-12-27 08:24:55,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:24:55,872 INFO L93 Difference]: Finished difference Result 2150 states and 4296 transitions. [2019-12-27 08:24:55,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2019-12-27 08:24:55,872 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 29 [2019-12-27 08:24:55,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:24:55,884 INFO L225 Difference]: With dead ends: 2150 [2019-12-27 08:24:55,884 INFO L226 Difference]: Without dead ends: 2150 [2019-12-27 08:24:55,891 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173324 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=76120, Invalid=226930, Unknown=0, NotChecked=0, Total=303050 [2019-12-27 08:24:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2019-12-27 08:24:55,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 172. [2019-12-27 08:24:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-12-27 08:24:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 340 transitions. [2019-12-27 08:24:55,908 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 340 transitions. Word has length 29 [2019-12-27 08:24:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:24:55,909 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 340 transitions. [2019-12-27 08:24:55,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-12-27 08:24:55,909 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 340 transitions. [2019-12-27 08:24:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 08:24:55,910 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:24:55,910 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:24:56,114 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:56,114 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:24:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:24:56,114 INFO L82 PathProgramCache]: Analyzing trace with hash -307926907, now seen corresponding path program 13 times [2019-12-27 08:24:56,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:24:56,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341827148] [2019-12-27 08:24:56,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:24:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:24:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:24:56,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341827148] [2019-12-27 08:24:56,419 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656966414] [2019-12-27 08:24:56,419 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:24:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:24:56,491 INFO L264 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-27 08:24:56,493 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:24:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-27 08:24:56,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:24:56,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12] total 36 [2019-12-27 08:24:56,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471022183] [2019-12-27 08:24:56,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-27 08:24:56,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:24:56,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-27 08:24:56,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2019-12-27 08:24:56,711 INFO L87 Difference]: Start difference. First operand 172 states and 340 transitions. Second operand 36 states. [2019-12-27 08:25:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:25:26,141 INFO L93 Difference]: Finished difference Result 2656 states and 5308 transitions. [2019-12-27 08:25:26,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 675 states. [2019-12-27 08:25:26,142 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 31 [2019-12-27 08:25:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:25:26,154 INFO L225 Difference]: With dead ends: 2656 [2019-12-27 08:25:26,154 INFO L226 Difference]: Without dead ends: 2656 [2019-12-27 08:25:26,163 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 682 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273352 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=117282, Invalid=349890, Unknown=0, NotChecked=0, Total=467172 [2019-12-27 08:25:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2019-12-27 08:25:26,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 188. [2019-12-27 08:25:26,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-27 08:25:26,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 372 transitions. [2019-12-27 08:25:26,179 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 372 transitions. Word has length 31 [2019-12-27 08:25:26,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:25:26,180 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 372 transitions. [2019-12-27 08:25:26,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-27 08:25:26,180 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 372 transitions. [2019-12-27 08:25:26,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-27 08:25:26,181 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:25:26,181 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:25:26,384 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:25:26,384 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:25:26,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:25:26,385 INFO L82 PathProgramCache]: Analyzing trace with hash -539511566, now seen corresponding path program 14 times [2019-12-27 08:25:26,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:25:26,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467023918] [2019-12-27 08:25:26,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:25:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:25:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:25:26,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467023918] [2019-12-27 08:25:26,666 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072795215] [2019-12-27 08:25:26,666 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:25:26,742 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 08:25:26,742 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:25:26,743 INFO L264 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-27 08:25:26,744 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:25:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-27 08:25:26,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:25:26,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13] total 39 [2019-12-27 08:25:26,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862501255] [2019-12-27 08:25:26,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-12-27 08:25:26,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:25:26,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-12-27 08:25:26,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2019-12-27 08:25:26,942 INFO L87 Difference]: Start difference. First operand 188 states and 372 transitions. Second operand 39 states. [2019-12-27 08:26:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:26:07,891 INFO L93 Difference]: Finished difference Result 3228 states and 6452 transitions. [2019-12-27 08:26:07,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 825 states. [2019-12-27 08:26:07,891 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 33 [2019-12-27 08:26:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:26:07,903 INFO L225 Difference]: With dead ends: 3228 [2019-12-27 08:26:07,903 INFO L226 Difference]: Without dead ends: 3228 [2019-12-27 08:26:07,915 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 833 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415362 ImplicationChecksByTransitivity, 37.4s TimeCoverageRelationStatistics Valid=174859, Invalid=521531, Unknown=0, NotChecked=0, Total=696390 [2019-12-27 08:26:07,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2019-12-27 08:26:07,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 204. [2019-12-27 08:26:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-12-27 08:26:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 404 transitions. [2019-12-27 08:26:07,933 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 404 transitions. Word has length 33 [2019-12-27 08:26:07,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:26:07,933 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 404 transitions. [2019-12-27 08:26:07,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-12-27 08:26:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 404 transitions. [2019-12-27 08:26:07,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-27 08:26:07,934 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:26:07,934 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:26:08,139 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:26:08,139 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:26:08,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:26:08,139 INFO L82 PathProgramCache]: Analyzing trace with hash 245930527, now seen corresponding path program 15 times [2019-12-27 08:26:08,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:26:08,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623974894] [2019-12-27 08:26:08,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:26:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:26:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:26:08,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623974894] [2019-12-27 08:26:08,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460169248] [2019-12-27 08:26:08,470 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:26:08,550 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-27 08:26:08,550 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:26:08,551 INFO L264 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-27 08:26:08,553 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:26:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-12-27 08:26:08,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:26:08,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 8] total 36 [2019-12-27 08:26:08,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642612870] [2019-12-27 08:26:08,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-27 08:26:08,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:26:08,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-27 08:26:08,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2019-12-27 08:26:08,680 INFO L87 Difference]: Start difference. First operand 204 states and 404 transitions. Second operand 36 states. [2019-12-27 08:26:21,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:26:21,604 INFO L93 Difference]: Finished difference Result 4264 states and 8516 transitions. [2019-12-27 08:26:21,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 482 states. [2019-12-27 08:26:21,604 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2019-12-27 08:26:21,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:26:21,619 INFO L225 Difference]: With dead ends: 4264 [2019-12-27 08:26:21,620 INFO L226 Difference]: Without dead ends: 4252 [2019-12-27 08:26:21,627 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135844 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=60247, Invalid=176435, Unknown=0, NotChecked=0, Total=236682 [2019-12-27 08:26:21,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2019-12-27 08:26:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 379. [2019-12-27 08:26:21,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-12-27 08:26:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 801 transitions. [2019-12-27 08:26:21,651 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 801 transitions. Word has length 35 [2019-12-27 08:26:21,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:26:21,651 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 801 transitions. [2019-12-27 08:26:21,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-27 08:26:21,652 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 801 transitions. [2019-12-27 08:26:21,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-27 08:26:21,653 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:26:21,653 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:26:21,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:26:21,856 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:26:21,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:26:21,857 INFO L82 PathProgramCache]: Analyzing trace with hash -935721754, now seen corresponding path program 16 times [2019-12-27 08:26:21,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:26:21,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381807514] [2019-12-27 08:26:21,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:26:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:26:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:26:22,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381807514] [2019-12-27 08:26:22,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253126957] [2019-12-27 08:26:22,319 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:26:22,393 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 08:26:22,393 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:26:22,394 INFO L264 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-27 08:26:22,395 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:26:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-12-27 08:26:22,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:26:22,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 14] total 43 [2019-12-27 08:26:22,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548246725] [2019-12-27 08:26:22,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-12-27 08:26:22,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:26:22,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-12-27 08:26:22,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2019-12-27 08:26:22,617 INFO L87 Difference]: Start difference. First operand 379 states and 801 transitions. Second operand 43 states. [2019-12-27 08:27:28,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:27:28,127 INFO L93 Difference]: Finished difference Result 4559 states and 9114 transitions. [2019-12-27 08:27:28,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1084 states. [2019-12-27 08:27:28,127 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 36 [2019-12-27 08:27:28,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:27:28,146 INFO L225 Difference]: With dead ends: 4559 [2019-12-27 08:27:28,146 INFO L226 Difference]: Without dead ends: 4559 [2019-12-27 08:27:28,165 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1116 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1093 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728882 ImplicationChecksByTransitivity, 60.6s TimeCoverageRelationStatistics Valid=296426, Invalid=901504, Unknown=0, NotChecked=0, Total=1197930 [2019-12-27 08:27:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2019-12-27 08:27:28,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 247. [2019-12-27 08:27:28,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2019-12-27 08:27:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 490 transitions. [2019-12-27 08:27:28,186 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 490 transitions. Word has length 36 [2019-12-27 08:27:28,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:27:28,186 INFO L462 AbstractCegarLoop]: Abstraction has 247 states and 490 transitions. [2019-12-27 08:27:28,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-12-27 08:27:28,187 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 490 transitions. [2019-12-27 08:27:28,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-27 08:27:28,187 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:27:28,188 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:27:28,390 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:27:28,391 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:27:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:27:28,391 INFO L82 PathProgramCache]: Analyzing trace with hash -812157799, now seen corresponding path program 17 times [2019-12-27 08:27:28,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:27:28,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290413232] [2019-12-27 08:27:28,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:27:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:27:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:27:28,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290413232] [2019-12-27 08:27:28,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203498386] [2019-12-27 08:27:28,921 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:27:28,986 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-27 08:27:28,987 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:27:28,987 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 08:27:28,989 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:27:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-12-27 08:27:29,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:27:29,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 9] total 40 [2019-12-27 08:27:29,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244283048] [2019-12-27 08:27:29,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-12-27 08:27:29,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:27:29,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-12-27 08:27:29,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2019-12-27 08:27:29,148 INFO L87 Difference]: Start difference. First operand 247 states and 490 transitions. Second operand 40 states. [2019-12-27 08:27:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 08:27:48,419 INFO L93 Difference]: Finished difference Result 5929 states and 11845 transitions. [2019-12-27 08:27:48,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 645 states. [2019-12-27 08:27:48,420 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 38 [2019-12-27 08:27:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 08:27:48,432 INFO L225 Difference]: With dead ends: 5929 [2019-12-27 08:27:48,432 INFO L226 Difference]: Without dead ends: 5915 [2019-12-27 08:27:48,443 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 649 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252388 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=106734, Invalid=316416, Unknown=0, NotChecked=0, Total=423150 [2019-12-27 08:27:48,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2019-12-27 08:27:48,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 466. [2019-12-27 08:27:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-12-27 08:27:48,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 985 transitions. [2019-12-27 08:27:48,477 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 985 transitions. Word has length 38 [2019-12-27 08:27:48,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 08:27:48,477 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 985 transitions. [2019-12-27 08:27:48,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-12-27 08:27:48,477 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 985 transitions. [2019-12-27 08:27:48,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-27 08:27:48,479 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 08:27:48,479 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 08:27:48,682 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:27:48,683 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 08:27:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 08:27:48,683 INFO L82 PathProgramCache]: Analyzing trace with hash 623278508, now seen corresponding path program 18 times [2019-12-27 08:27:48,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 08:27:48,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187314385] [2019-12-27 08:27:48,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 08:27:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 08:27:49,152 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 08:27:49,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187314385] [2019-12-27 08:27:49,153 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039183706] [2019-12-27 08:27:49,153 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:27:49,243 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-12-27 08:27:49,243 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 08:27:49,244 INFO L264 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-27 08:27:49,245 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 08:27:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-12-27 08:27:49,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 08:27:49,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 10] total 42 [2019-12-27 08:27:49,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232386163] [2019-12-27 08:27:49,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-27 08:27:49,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 08:27:49,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-27 08:27:49,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1357, Unknown=0, NotChecked=0, Total=1722 [2019-12-27 08:27:49,387 INFO L87 Difference]: Start difference. First operand 466 states and 985 transitions. Second operand 42 states. Received shutdown request... [2019-12-27 08:27:49,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-12-27 08:27:50,031 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 08:27:50,032 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-27 08:27:50,037 WARN L227 ceAbstractionStarter]: Timeout [2019-12-27 08:27:50,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 08:27:50 BasicIcfg [2019-12-27 08:27:50,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 08:27:50,038 INFO L168 Benchmark]: Toolchain (without parser) took 248706.45 ms. Allocated memory was 143.7 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 99.0 MB in the beginning and 1.1 GB in the end (delta: -986.7 MB). Peak memory consumption was 617.1 MB. Max. memory is 7.1 GB. [2019-12-27 08:27:50,039 INFO L168 Benchmark]: CDTParser took 1.52 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 08:27:50,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1027.38 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 98.8 MB in the beginning and 107.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. [2019-12-27 08:27:50,040 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.78 ms. Allocated memory is still 202.4 MB. Free memory was 107.1 MB in the beginning and 105.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-12-27 08:27:50,040 INFO L168 Benchmark]: Boogie Preprocessor took 43.85 ms. Allocated memory is still 202.4 MB. Free memory was 105.0 MB in the beginning and 102.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-12-27 08:27:50,041 INFO L168 Benchmark]: RCFGBuilder took 605.34 ms. Allocated memory was 202.4 MB in the beginning and 232.3 MB in the end (delta: 29.9 MB). Free memory was 102.8 MB in the beginning and 194.2 MB in the end (delta: -91.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2019-12-27 08:27:50,041 INFO L168 Benchmark]: TraceAbstraction took 246942.05 ms. Allocated memory was 232.3 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 194.2 MB in the beginning and 1.1 GB in the end (delta: -891.5 MB). Peak memory consumption was 623.7 MB. Max. memory is 7.1 GB. [2019-12-27 08:27:50,044 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.52 ms. Allocated memory is still 143.7 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1027.38 ms. Allocated memory was 143.7 MB in the beginning and 202.4 MB in the end (delta: 58.7 MB). Free memory was 98.8 MB in the beginning and 107.1 MB in the end (delta: -8.3 MB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 82.78 ms. Allocated memory is still 202.4 MB. Free memory was 107.1 MB in the beginning and 105.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.85 ms. Allocated memory is still 202.4 MB. Free memory was 105.0 MB in the beginning and 102.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 605.34 ms. Allocated memory was 202.4 MB in the beginning and 232.3 MB in the end (delta: 29.9 MB). Free memory was 102.8 MB in the beginning and 194.2 MB in the end (delta: -91.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246942.05 ms. Allocated memory was 232.3 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 194.2 MB in the beginning and 1.1 GB in the end (delta: -891.5 MB). Peak memory consumption was 623.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 5.1s, 82 ProgramPointsBefore, 14 ProgramPointsAfterwards, 85 TransitionsBefore, 13 TransitionsAfterwards, 640 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 328 VarBasedMoverChecksPositive, 7 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 510 CheckedPairsTotal, 77 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (466states) and FLOYD_HOARE automaton (currently 31 states, 42 states before enhancement),while ReachableStatesComputation was computing reachable states (39 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Result: TIMEOUT, OverallTime: 246.8s, OverallIterations: 20, TraceHistogramMax: 12, AutomataDifference: 229.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 311 SDtfs, 5713 SDslu, 4169 SDs, 0 SdLazy, 4713 SolverSat, 12779 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6840 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 6061 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2193225 ImplicationChecksByTransitivity, 209.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=466occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 27544 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 929 NumberOfCodeBlocks, 883 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 891 ConstructedInterpolants, 0 QuantifiedInterpolants, 60815 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2695 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 38 InterpolantComputations, 2 PerfectInterpolantSequences, 647/2473 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown