/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 00:29:23,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 00:29:23,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 00:29:23,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 00:29:23,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 00:29:23,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 00:29:23,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 00:29:23,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 00:29:23,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 00:29:23,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 00:29:23,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 00:29:23,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 00:29:23,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 00:29:23,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 00:29:23,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 00:29:23,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 00:29:23,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 00:29:23,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 00:29:23,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 00:29:23,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 00:29:23,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 00:29:23,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 00:29:23,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 00:29:23,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 00:29:23,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 00:29:23,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 00:29:23,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 00:29:23,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 00:29:23,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 00:29:23,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 00:29:23,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 00:29:23,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 00:29:23,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 00:29:23,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 00:29:23,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 00:29:23,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 00:29:23,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 00:29:23,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 00:29:23,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 00:29:23,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 00:29:23,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 00:29:23,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-27 00:29:23,551 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 00:29:23,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 00:29:23,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 00:29:23,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 00:29:23,552 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 00:29:23,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 00:29:23,553 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 00:29:23,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 00:29:23,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 00:29:23,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 00:29:23,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 00:29:23,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 00:29:23,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 00:29:23,554 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 00:29:23,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 00:29:23,554 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 00:29:23,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 00:29:23,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 00:29:23,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 00:29:23,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 00:29:23,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 00:29:23,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 00:29:23,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 00:29:23,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 00:29:23,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 00:29:23,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 00:29:23,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 00:29:23,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 00:29:23,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-27 00:29:23,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 00:29:23,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 00:29:23,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 00:29:23,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 00:29:23,858 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 00:29:23,859 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 00:29:23,859 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-27 00:29:23,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3d0b22a/016aa32df2a84dc383bf4ffcb93fa9c9/FLAG05999e3e5 [2019-12-27 00:29:24,518 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 00:29:24,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2019-12-27 00:29:24,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3d0b22a/016aa32df2a84dc383bf4ffcb93fa9c9/FLAG05999e3e5 [2019-12-27 00:29:24,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3d0b22a/016aa32df2a84dc383bf4ffcb93fa9c9 [2019-12-27 00:29:24,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 00:29:24,761 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 00:29:24,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 00:29:24,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 00:29:24,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 00:29:24,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 12:29:24" (1/1) ... [2019-12-27 00:29:24,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d35bc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:24, skipping insertion in model container [2019-12-27 00:29:24,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 12:29:24" (1/1) ... [2019-12-27 00:29:24,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 00:29:24,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 00:29:25,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 00:29:25,528 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 00:29:25,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 00:29:25,802 INFO L208 MainTranslator]: Completed translation [2019-12-27 00:29:25,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25 WrapperNode [2019-12-27 00:29:25,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 00:29:25,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 00:29:25,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 00:29:25,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 00:29:25,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25" (1/1) ... [2019-12-27 00:29:25,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25" (1/1) ... [2019-12-27 00:29:25,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 00:29:25,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 00:29:25,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 00:29:25,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 00:29:25,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25" (1/1) ... [2019-12-27 00:29:25,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25" (1/1) ... [2019-12-27 00:29:25,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25" (1/1) ... [2019-12-27 00:29:25,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25" (1/1) ... [2019-12-27 00:29:25,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25" (1/1) ... [2019-12-27 00:29:25,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25" (1/1) ... [2019-12-27 00:29:25,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25" (1/1) ... [2019-12-27 00:29:25,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 00:29:25,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 00:29:25,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 00:29:25,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 00:29:25,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25" (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 00:29:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 00:29:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 00:29:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 00:29:25,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2019-12-27 00:29:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2019-12-27 00:29:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 00:29:25,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 00:29:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 00:29:25,996 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 00:29:26,465 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 00:29:26,466 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-27 00:29:26,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 12:29:26 BoogieIcfgContainer [2019-12-27 00:29:26,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 00:29:26,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 00:29:26,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 00:29:26,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 00:29:26,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 12:29:24" (1/3) ... [2019-12-27 00:29:26,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f69f41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 12:29:26, skipping insertion in model container [2019-12-27 00:29:26,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:29:25" (2/3) ... [2019-12-27 00:29:26,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f69f41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 12:29:26, skipping insertion in model container [2019-12-27 00:29:26,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 12:29:26" (3/3) ... [2019-12-27 00:29:26,474 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2019-12-27 00:29:26,483 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 00:29:26,483 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 00:29:26,490 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 00:29:26,490 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 00:29:26,512 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,513 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,513 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,513 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,513 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,513 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,516 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,516 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,516 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,517 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,517 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,517 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,518 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,518 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,518 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,520 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,520 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,520 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,521 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,521 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,521 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,525 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,526 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,526 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,526 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,526 WARN L315 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,527 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,527 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,527 WARN L315 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:29:26,557 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 00:29:26,574 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 00:29:26,574 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 00:29:26,574 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 00:29:26,575 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 00:29:26,575 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 00:29:26,575 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 00:29:26,575 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 00:29:26,575 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 00:29:26,587 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions [2019-12-27 00:29:26,589 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions [2019-12-27 00:29:26,648 INFO L132 PetriNetUnfolder]: 7/84 cut-off events. [2019-12-27 00:29:26,649 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 00:29:26,655 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 00:29:26,657 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions [2019-12-27 00:29:26,686 INFO L132 PetriNetUnfolder]: 7/84 cut-off events. [2019-12-27 00:29:26,686 INFO L133 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2019-12-27 00:29:26,687 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 00:29:26,689 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 640 [2019-12-27 00:29:26,690 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 00:29:28,139 WARN L192 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-12-27 00:29:28,390 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-12-27 00:29:28,931 WARN L192 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2019-12-27 00:29:29,175 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-12-27 00:29:29,628 WARN L192 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-12-27 00:29:29,996 WARN L192 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-12-27 00:29:31,231 WARN L192 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2019-12-27 00:29:31,702 WARN L192 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2019-12-27 00:29:31,706 INFO L206 etLargeBlockEncoding]: Checked pairs total: 510 [2019-12-27 00:29:31,706 INFO L214 etLargeBlockEncoding]: Total number of compositions: 77 [2019-12-27 00:29:31,710 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 14 places, 13 transitions [2019-12-27 00:29:31,718 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17 states. [2019-12-27 00:29:31,720 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-12-27 00:29:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 00:29:31,726 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:31,727 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:31,728 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:31,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1101690005, now seen corresponding path program 1 times [2019-12-27 00:29:31,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:31,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302925133] [2019-12-27 00:29:31,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:31,959 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 00:29:31,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302925133] [2019-12-27 00:29:31,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:29:31,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 00:29:31,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788631319] [2019-12-27 00:29:31,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 00:29:31,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:31,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 00:29:31,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 00:29:31,985 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-12-27 00:29:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:29:32,020 INFO L93 Difference]: Finished difference Result 20 states and 36 transitions. [2019-12-27 00:29:32,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 00:29:32,022 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 00:29:32,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:29:32,034 INFO L225 Difference]: With dead ends: 20 [2019-12-27 00:29:32,034 INFO L226 Difference]: Without dead ends: 20 [2019-12-27 00:29:32,036 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 00:29:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-27 00:29:32,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-27 00:29:32,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-27 00:29:32,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 36 transitions. [2019-12-27 00:29:32,072 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 36 transitions. Word has length 8 [2019-12-27 00:29:32,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:29:32,072 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 36 transitions. [2019-12-27 00:29:32,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 00:29:32,073 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 36 transitions. [2019-12-27 00:29:32,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 00:29:32,074 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:32,074 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:32,074 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:32,074 INFO L82 PathProgramCache]: Analyzing trace with hash -176981712, now seen corresponding path program 1 times [2019-12-27 00:29:32,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:32,075 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747111541] [2019-12-27 00:29:32,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:32,151 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 00:29:32,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747111541] [2019-12-27 00:29:32,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:29:32,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 00:29:32,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400259590] [2019-12-27 00:29:32,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 00:29:32,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:32,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 00:29:32,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 00:29:32,155 INFO L87 Difference]: Start difference. First operand 20 states and 36 transitions. Second operand 3 states. [2019-12-27 00:29:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:29:32,167 INFO L93 Difference]: Finished difference Result 28 states and 52 transitions. [2019-12-27 00:29:32,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 00:29:32,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 00:29:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:29:32,169 INFO L225 Difference]: With dead ends: 28 [2019-12-27 00:29:32,169 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 00:29:32,170 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 00:29:32,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 00:29:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2019-12-27 00:29:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-27 00:29:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2019-12-27 00:29:32,175 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 44 transitions. Word has length 9 [2019-12-27 00:29:32,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:29:32,176 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 44 transitions. [2019-12-27 00:29:32,176 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 00:29:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 44 transitions. [2019-12-27 00:29:32,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 00:29:32,177 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:32,177 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:32,177 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:32,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:32,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1360713053, now seen corresponding path program 1 times [2019-12-27 00:29:32,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:32,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643053679] [2019-12-27 00:29:32,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:32,289 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 00:29:32,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643053679] [2019-12-27 00:29:32,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458797418] [2019-12-27 00:29:32,289 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 00:29:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:32,370 INFO L264 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-27 00:29:32,376 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:29:32,414 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 00:29:32,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:29:32,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2019-12-27 00:29:32,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963561914] [2019-12-27 00:29:32,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 00:29:32,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:32,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 00:29:32,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-12-27 00:29:32,417 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 8 states. [2019-12-27 00:29:32,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:29:32,669 INFO L93 Difference]: Finished difference Result 64 states and 124 transitions. [2019-12-27 00:29:32,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-27 00:29:32,669 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-12-27 00:29:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:29:32,671 INFO L225 Difference]: With dead ends: 64 [2019-12-27 00:29:32,671 INFO L226 Difference]: Without dead ends: 64 [2019-12-27 00:29:32,672 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 00:29:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-27 00:29:32,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 32. [2019-12-27 00:29:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-27 00:29:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 60 transitions. [2019-12-27 00:29:32,680 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 60 transitions. Word has length 11 [2019-12-27 00:29:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:29:32,681 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 60 transitions. [2019-12-27 00:29:32,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 00:29:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 60 transitions. [2019-12-27 00:29:32,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-27 00:29:32,682 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:32,683 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:32,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:29:32,888 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:32,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:32,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1616632394, now seen corresponding path program 2 times [2019-12-27 00:29:32,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:32,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023166985] [2019-12-27 00:29:32,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:32,988 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 00:29:32,989 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023166985] [2019-12-27 00:29:32,989 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011319880] [2019-12-27 00:29:32,989 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 00:29:33,080 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 00:29:33,081 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:29:33,082 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 00:29:33,084 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:29:33,134 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 00:29:33,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:29:33,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2019-12-27 00:29:33,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082167668] [2019-12-27 00:29:33,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-27 00:29:33,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:33,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-27 00:29:33,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-12-27 00:29:33,137 INFO L87 Difference]: Start difference. First operand 32 states and 60 transitions. Second operand 11 states. [2019-12-27 00:29:33,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:29:33,640 INFO L93 Difference]: Finished difference Result 112 states and 220 transitions. [2019-12-27 00:29:33,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-12-27 00:29:33,641 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-12-27 00:29:33,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:29:33,644 INFO L225 Difference]: With dead ends: 112 [2019-12-27 00:29:33,644 INFO L226 Difference]: Without dead ends: 112 [2019-12-27 00:29:33,648 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 00:29:33,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-12-27 00:29:33,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 40. [2019-12-27 00:29:33,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-12-27 00:29:33,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 76 transitions. [2019-12-27 00:29:33,666 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 76 transitions. Word has length 13 [2019-12-27 00:29:33,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:29:33,667 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 76 transitions. [2019-12-27 00:29:33,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-27 00:29:33,667 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 76 transitions. [2019-12-27 00:29:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-27 00:29:33,668 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:33,668 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:33,879 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:29:33,879 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:33,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:33,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1552984073, now seen corresponding path program 3 times [2019-12-27 00:29:33,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:33,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586868497] [2019-12-27 00:29:33,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:34,041 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 00:29:34,041 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586868497] [2019-12-27 00:29:34,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344269393] [2019-12-27 00:29:34,042 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 00:29:34,120 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-27 00:29:34,121 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:29:34,122 INFO L264 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-27 00:29:34,123 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:29:34,146 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 00:29:34,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:29:34,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2019-12-27 00:29:34,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24988384] [2019-12-27 00:29:34,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-27 00:29:34,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:34,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-27 00:29:34,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-12-27 00:29:34,148 INFO L87 Difference]: Start difference. First operand 40 states and 76 transitions. Second operand 12 states. [2019-12-27 00:29:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:29:34,796 INFO L93 Difference]: Finished difference Result 200 states and 392 transitions. [2019-12-27 00:29:34,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-12-27 00:29:34,797 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2019-12-27 00:29:34,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:29:34,801 INFO L225 Difference]: With dead ends: 200 [2019-12-27 00:29:34,801 INFO L226 Difference]: Without dead ends: 196 [2019-12-27 00:29:34,802 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 00:29:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2019-12-27 00:29:34,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 65. [2019-12-27 00:29:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-12-27 00:29:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 135 transitions. [2019-12-27 00:29:34,813 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 135 transitions. Word has length 15 [2019-12-27 00:29:34,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:29:34,814 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 135 transitions. [2019-12-27 00:29:34,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-27 00:29:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 135 transitions. [2019-12-27 00:29:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-27 00:29:34,815 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:34,815 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:35,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:29:35,020 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:35,021 INFO L82 PathProgramCache]: Analyzing trace with hash -867499506, now seen corresponding path program 4 times [2019-12-27 00:29:35,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:35,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226777093] [2019-12-27 00:29:35,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:35,110 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 00:29:35,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226777093] [2019-12-27 00:29:35,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047004876] [2019-12-27 00:29:35,110 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 00:29:35,177 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 00:29:35,178 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:29:35,179 INFO L264 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 00:29:35,180 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:29:35,224 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 00:29:35,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:29:35,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2019-12-27 00:29:35,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272376930] [2019-12-27 00:29:35,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-27 00:29:35,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:35,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-27 00:29:35,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-12-27 00:29:35,226 INFO L87 Difference]: Start difference. First operand 65 states and 135 transitions. Second operand 15 states. [2019-12-27 00:29:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:29:36,462 INFO L93 Difference]: Finished difference Result 235 states and 466 transitions. [2019-12-27 00:29:36,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2019-12-27 00:29:36,463 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2019-12-27 00:29:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:29:36,466 INFO L225 Difference]: With dead ends: 235 [2019-12-27 00:29:36,466 INFO L226 Difference]: Without dead ends: 235 [2019-12-27 00:29:36,470 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 00:29:36,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-12-27 00:29:36,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 59. [2019-12-27 00:29:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-12-27 00:29:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2019-12-27 00:29:36,480 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 16 [2019-12-27 00:29:36,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:29:36,480 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2019-12-27 00:29:36,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-27 00:29:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2019-12-27 00:29:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-27 00:29:36,481 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:36,481 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:36,685 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:29:36,685 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:36,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:36,685 INFO L82 PathProgramCache]: Analyzing trace with hash -2055665343, now seen corresponding path program 5 times [2019-12-27 00:29:36,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:36,686 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073601269] [2019-12-27 00:29:36,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:36,809 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 00:29:36,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073601269] [2019-12-27 00:29:36,811 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653839412] [2019-12-27 00:29:36,811 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 00:29:36,877 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-27 00:29:36,878 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:29:36,878 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 00:29:36,879 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:29:36,946 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 00:29:36,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:29:36,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 16 [2019-12-27 00:29:36,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617405906] [2019-12-27 00:29:36,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-27 00:29:36,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:36,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-27 00:29:36,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2019-12-27 00:29:36,948 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 16 states. [2019-12-27 00:29:38,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:29:38,226 INFO L93 Difference]: Finished difference Result 397 states and 785 transitions. [2019-12-27 00:29:38,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-12-27 00:29:38,226 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2019-12-27 00:29:38,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:29:38,230 INFO L225 Difference]: With dead ends: 397 [2019-12-27 00:29:38,230 INFO L226 Difference]: Without dead ends: 391 [2019-12-27 00:29:38,232 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2528 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1775, Invalid=4705, Unknown=0, NotChecked=0, Total=6480 [2019-12-27 00:29:38,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-12-27 00:29:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 100. [2019-12-27 00:29:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-12-27 00:29:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 211 transitions. [2019-12-27 00:29:38,246 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 211 transitions. Word has length 18 [2019-12-27 00:29:38,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:29:38,246 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 211 transitions. [2019-12-27 00:29:38,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-27 00:29:38,247 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 211 transitions. [2019-12-27 00:29:38,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-27 00:29:38,248 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:38,248 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:38,451 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:29:38,452 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:38,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:38,452 INFO L82 PathProgramCache]: Analyzing trace with hash 729250308, now seen corresponding path program 6 times [2019-12-27 00:29:38,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:38,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122454385] [2019-12-27 00:29:38,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:38,572 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 00:29:38,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122454385] [2019-12-27 00:29:38,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166776540] [2019-12-27 00:29:38,574 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 00:29:38,705 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-27 00:29:38,706 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:29:38,707 INFO L264 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 00:29:38,709 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:29:38,814 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 00:29:38,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:29:38,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 19 [2019-12-27 00:29:38,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471101740] [2019-12-27 00:29:38,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-12-27 00:29:38,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:38,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-12-27 00:29:38,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-12-27 00:29:38,817 INFO L87 Difference]: Start difference. First operand 100 states and 211 transitions. Second operand 19 states. [2019-12-27 00:29:41,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:29:41,785 INFO L93 Difference]: Finished difference Result 451 states and 898 transitions. [2019-12-27 00:29:41,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2019-12-27 00:29:41,785 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2019-12-27 00:29:41,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:29:41,789 INFO L225 Difference]: With dead ends: 451 [2019-12-27 00:29:41,789 INFO L226 Difference]: Without dead ends: 451 [2019-12-27 00:29:41,794 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 00:29:41,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2019-12-27 00:29:41,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 82. [2019-12-27 00:29:41,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-27 00:29:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2019-12-27 00:29:41,803 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 19 [2019-12-27 00:29:41,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:29:41,803 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2019-12-27 00:29:41,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-12-27 00:29:41,804 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2019-12-27 00:29:41,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-27 00:29:41,805 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:41,805 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:42,008 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:29:42,009 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:42,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:42,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1093713423, now seen corresponding path program 7 times [2019-12-27 00:29:42,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:42,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575890301] [2019-12-27 00:29:42,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:42,165 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 00:29:42,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575890301] [2019-12-27 00:29:42,166 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246189227] [2019-12-27 00:29:42,166 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 00:29:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:42,235 INFO L264 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-27 00:29:42,237 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:29:42,319 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 00:29:42,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:29:42,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 22 [2019-12-27 00:29:42,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135035656] [2019-12-27 00:29:42,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-27 00:29:42,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:42,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-27 00:29:42,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2019-12-27 00:29:42,322 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 22 states. [2019-12-27 00:29:46,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:29:46,630 INFO L93 Difference]: Finished difference Result 639 states and 1274 transitions. [2019-12-27 00:29:46,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2019-12-27 00:29:46,631 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2019-12-27 00:29:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:29:46,636 INFO L225 Difference]: With dead ends: 639 [2019-12-27 00:29:46,636 INFO L226 Difference]: Without dead ends: 639 [2019-12-27 00:29:46,645 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 00:29:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-12-27 00:29:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 94. [2019-12-27 00:29:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-12-27 00:29:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 184 transitions. [2019-12-27 00:29:46,655 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 184 transitions. Word has length 21 [2019-12-27 00:29:46,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:29:46,656 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 184 transitions. [2019-12-27 00:29:46,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-27 00:29:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 184 transitions. [2019-12-27 00:29:46,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-27 00:29:46,657 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:46,658 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:46,861 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:29:46,862 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:46,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:46,863 INFO L82 PathProgramCache]: Analyzing trace with hash -615202146, now seen corresponding path program 8 times [2019-12-27 00:29:46,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:46,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089629233] [2019-12-27 00:29:46,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:47,054 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 00:29:47,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089629233] [2019-12-27 00:29:47,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278356707] [2019-12-27 00:29:47,054 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 00:29:47,131 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 00:29:47,132 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:29:47,132 INFO L264 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 00:29:47,134 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:29:47,236 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 00:29:47,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:29:47,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 25 [2019-12-27 00:29:47,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302648824] [2019-12-27 00:29:47,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-12-27 00:29:47,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:47,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-12-27 00:29:47,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2019-12-27 00:29:47,238 INFO L87 Difference]: Start difference. First operand 94 states and 184 transitions. Second operand 25 states. [2019-12-27 00:29:54,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:29:54,035 INFO L93 Difference]: Finished difference Result 869 states and 1734 transitions. [2019-12-27 00:29:54,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2019-12-27 00:29:54,036 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 23 [2019-12-27 00:29:54,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:29:54,042 INFO L225 Difference]: With dead ends: 869 [2019-12-27 00:29:54,042 INFO L226 Difference]: Without dead ends: 869 [2019-12-27 00:29:54,049 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 00:29:54,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2019-12-27 00:29:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 106. [2019-12-27 00:29:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2019-12-27 00:29:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 208 transitions. [2019-12-27 00:29:54,090 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 208 transitions. Word has length 23 [2019-12-27 00:29:54,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:29:54,091 INFO L462 AbstractCegarLoop]: Abstraction has 106 states and 208 transitions. [2019-12-27 00:29:54,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-12-27 00:29:54,091 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 208 transitions. [2019-12-27 00:29:54,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-27 00:29:54,094 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:54,097 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:54,301 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:29:54,302 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:54,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:54,302 INFO L82 PathProgramCache]: Analyzing trace with hash -327365621, now seen corresponding path program 9 times [2019-12-27 00:29:54,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:54,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146319968] [2019-12-27 00:29:54,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:54,513 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 00:29:54,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146319968] [2019-12-27 00:29:54,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773452500] [2019-12-27 00:29:54,514 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 00:29:54,602 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-27 00:29:54,602 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:29:54,603 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-27 00:29:54,604 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:29:54,663 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 00:29:54,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:29:54,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 6] total 24 [2019-12-27 00:29:54,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967630123] [2019-12-27 00:29:54,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-27 00:29:54,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:54,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-27 00:29:54,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2019-12-27 00:29:54,666 INFO L87 Difference]: Start difference. First operand 106 states and 208 transitions. Second operand 24 states. [2019-12-27 00:29:58,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:29:58,343 INFO L93 Difference]: Finished difference Result 1267 states and 2524 transitions. [2019-12-27 00:29:58,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2019-12-27 00:29:58,344 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 25 [2019-12-27 00:29:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:29:58,351 INFO L225 Difference]: With dead ends: 1267 [2019-12-27 00:29:58,352 INFO L226 Difference]: Without dead ends: 1259 [2019-12-27 00:29:58,353 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 00:29:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2019-12-27 00:29:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 188. [2019-12-27 00:29:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-27 00:29:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 398 transitions. [2019-12-27 00:29:58,383 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 398 transitions. Word has length 25 [2019-12-27 00:29:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:29:58,383 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 398 transitions. [2019-12-27 00:29:58,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-27 00:29:58,383 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 398 transitions. [2019-12-27 00:29:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-27 00:29:58,389 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:29:58,389 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:29:58,590 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:29:58,590 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:29:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:29:58,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1528033158, now seen corresponding path program 10 times [2019-12-27 00:29:58,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:29:58,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772391162] [2019-12-27 00:29:58,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:29:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:29:58,790 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 00:29:58,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772391162] [2019-12-27 00:29:58,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289147337] [2019-12-27 00:29:58,790 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 00:29:58,859 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 00:29:58,860 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:29:58,861 INFO L264 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-27 00:29:58,862 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:29:58,969 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 00:29:58,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:29:58,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 29 [2019-12-27 00:29:58,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870368028] [2019-12-27 00:29:58,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-12-27 00:29:58,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:29:58,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-12-27 00:29:58,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2019-12-27 00:29:58,972 INFO L87 Difference]: Start difference. First operand 188 states and 398 transitions. Second operand 29 states. [2019-12-27 00:30:11,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:30:11,036 INFO L93 Difference]: Finished difference Result 1400 states and 2796 transitions. [2019-12-27 00:30:11,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2019-12-27 00:30:11,036 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 26 [2019-12-27 00:30:11,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:30:11,044 INFO L225 Difference]: With dead ends: 1400 [2019-12-27 00:30:11,045 INFO L226 Difference]: Without dead ends: 1400 [2019-12-27 00:30:11,049 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84029 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=39039, Invalid=113451, Unknown=0, NotChecked=0, Total=152490 [2019-12-27 00:30:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2019-12-27 00:30:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 137. [2019-12-27 00:30:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-12-27 00:30:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 270 transitions. [2019-12-27 00:30:11,062 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 270 transitions. Word has length 26 [2019-12-27 00:30:11,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:30:11,062 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 270 transitions. [2019-12-27 00:30:11,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-12-27 00:30:11,063 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 270 transitions. [2019-12-27 00:30:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-27 00:30:11,064 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:30:11,064 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:30:11,276 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:30:11,276 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:30:11,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:30:11,276 INFO L82 PathProgramCache]: Analyzing trace with hash 655160301, now seen corresponding path program 11 times [2019-12-27 00:30:11,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:30:11,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213129718] [2019-12-27 00:30:11,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:30:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:30:11,530 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 00:30:11,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213129718] [2019-12-27 00:30:11,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747610997] [2019-12-27 00:30:11,531 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 00:30:11,587 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-12-27 00:30:11,588 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:30:11,588 INFO L264 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 00:30:11,590 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:30:11,671 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 00:30:11,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:30:11,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 7] total 28 [2019-12-27 00:30:11,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885716412] [2019-12-27 00:30:11,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-27 00:30:11,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:30:11,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-27 00:30:11,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=587, Unknown=0, NotChecked=0, Total=756 [2019-12-27 00:30:11,673 INFO L87 Difference]: Start difference. First operand 137 states and 270 transitions. Second operand 28 states. [2019-12-27 00:30:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:30:17,588 INFO L93 Difference]: Finished difference Result 1982 states and 3953 transitions. [2019-12-27 00:30:17,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2019-12-27 00:30:17,588 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2019-12-27 00:30:17,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:30:17,597 INFO L225 Difference]: With dead ends: 1982 [2019-12-27 00:30:17,597 INFO L226 Difference]: Without dead ends: 1972 [2019-12-27 00:30:17,600 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 00:30:17,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2019-12-27 00:30:17,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 249. [2019-12-27 00:30:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2019-12-27 00:30:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 528 transitions. [2019-12-27 00:30:17,618 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 528 transitions. Word has length 28 [2019-12-27 00:30:17,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:30:17,619 INFO L462 AbstractCegarLoop]: Abstraction has 249 states and 528 transitions. [2019-12-27 00:30:17,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-27 00:30:17,619 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 528 transitions. [2019-12-27 00:30:17,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-12-27 00:30:17,620 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:30:17,620 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:30:17,824 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:30:17,824 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:30:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:30:17,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1134500648, now seen corresponding path program 12 times [2019-12-27 00:30:17,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:30:17,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419277759] [2019-12-27 00:30:17,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:30:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:30:18,136 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 00:30:18,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419277759] [2019-12-27 00:30:18,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501561265] [2019-12-27 00:30:18,137 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 00:30:18,247 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-12-27 00:30:18,248 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:30:18,249 INFO L264 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-27 00:30:18,250 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:30:18,388 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 00:30:18,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:30:18,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11] total 33 [2019-12-27 00:30:18,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122132976] [2019-12-27 00:30:18,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-12-27 00:30:18,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:30:18,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-12-27 00:30:18,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2019-12-27 00:30:18,391 INFO L87 Difference]: Start difference. First operand 249 states and 528 transitions. Second operand 33 states. [2019-12-27 00:30:38,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:30:38,587 INFO L93 Difference]: Finished difference Result 2150 states and 4296 transitions. [2019-12-27 00:30:38,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2019-12-27 00:30:38,588 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 29 [2019-12-27 00:30:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:30:38,597 INFO L225 Difference]: With dead ends: 2150 [2019-12-27 00:30:38,597 INFO L226 Difference]: Without dead ends: 2150 [2019-12-27 00:30:38,603 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173324 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=76120, Invalid=226930, Unknown=0, NotChecked=0, Total=303050 [2019-12-27 00:30:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2019-12-27 00:30:38,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 172. [2019-12-27 00:30:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-12-27 00:30:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 340 transitions. [2019-12-27 00:30:38,619 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 340 transitions. Word has length 29 [2019-12-27 00:30:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:30:38,620 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 340 transitions. [2019-12-27 00:30:38,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-12-27 00:30:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 340 transitions. [2019-12-27 00:30:38,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-12-27 00:30:38,621 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:30:38,621 INFO L411 BasicCegarLoop]: trace histogram [9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:30:38,824 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:30:38,825 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:30:38,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:30:38,825 INFO L82 PathProgramCache]: Analyzing trace with hash -307926907, now seen corresponding path program 13 times [2019-12-27 00:30:38,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:30:38,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852155894] [2019-12-27 00:30:38,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:30:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:30:39,112 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 00:30:39,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852155894] [2019-12-27 00:30:39,113 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116542253] [2019-12-27 00:30:39,113 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 00:30:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:30:39,185 INFO L264 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-27 00:30:39,187 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:30:39,408 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 00:30:39,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:30:39,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12] total 36 [2019-12-27 00:30:39,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289076927] [2019-12-27 00:30:39,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-27 00:30:39,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:30:39,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-27 00:30:39,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2019-12-27 00:30:39,410 INFO L87 Difference]: Start difference. First operand 172 states and 340 transitions. Second operand 36 states. [2019-12-27 00:31:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:31:08,079 INFO L93 Difference]: Finished difference Result 2656 states and 5308 transitions. [2019-12-27 00:31:08,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 675 states. [2019-12-27 00:31:08,080 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 31 [2019-12-27 00:31:08,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:31:08,093 INFO L225 Difference]: With dead ends: 2656 [2019-12-27 00:31:08,093 INFO L226 Difference]: Without dead ends: 2656 [2019-12-27 00:31:08,104 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 682 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273352 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=117282, Invalid=349890, Unknown=0, NotChecked=0, Total=467172 [2019-12-27 00:31:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2019-12-27 00:31:08,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 188. [2019-12-27 00:31:08,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-12-27 00:31:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 372 transitions. [2019-12-27 00:31:08,121 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 372 transitions. Word has length 31 [2019-12-27 00:31:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:31:08,122 INFO L462 AbstractCegarLoop]: Abstraction has 188 states and 372 transitions. [2019-12-27 00:31:08,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-27 00:31:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 372 transitions. [2019-12-27 00:31:08,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-27 00:31:08,123 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:31:08,123 INFO L411 BasicCegarLoop]: trace histogram [10, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:31:08,330 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:31:08,330 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:31:08,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:31:08,330 INFO L82 PathProgramCache]: Analyzing trace with hash -539511566, now seen corresponding path program 14 times [2019-12-27 00:31:08,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:31:08,331 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149238574] [2019-12-27 00:31:08,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:31:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:31:08,712 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 00:31:08,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149238574] [2019-12-27 00:31:08,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067250258] [2019-12-27 00:31:08,712 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 00:31:08,910 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 00:31:08,910 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:31:08,912 INFO L264 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-27 00:31:08,914 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:31:09,122 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 00:31:09,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:31:09,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13] total 39 [2019-12-27 00:31:09,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152355265] [2019-12-27 00:31:09,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-12-27 00:31:09,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:31:09,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-12-27 00:31:09,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2019-12-27 00:31:09,124 INFO L87 Difference]: Start difference. First operand 188 states and 372 transitions. Second operand 39 states. [2019-12-27 00:31:49,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:31:49,080 INFO L93 Difference]: Finished difference Result 3228 states and 6452 transitions. [2019-12-27 00:31:49,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 825 states. [2019-12-27 00:31:49,081 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 33 [2019-12-27 00:31:49,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:31:49,092 INFO L225 Difference]: With dead ends: 3228 [2019-12-27 00:31:49,092 INFO L226 Difference]: Without dead ends: 3228 [2019-12-27 00:31:49,106 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 833 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415362 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=174859, Invalid=521531, Unknown=0, NotChecked=0, Total=696390 [2019-12-27 00:31:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2019-12-27 00:31:49,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 204. [2019-12-27 00:31:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2019-12-27 00:31:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 404 transitions. [2019-12-27 00:31:49,125 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 404 transitions. Word has length 33 [2019-12-27 00:31:49,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:31:49,125 INFO L462 AbstractCegarLoop]: Abstraction has 204 states and 404 transitions. [2019-12-27 00:31:49,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-12-27 00:31:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 404 transitions. [2019-12-27 00:31:49,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-27 00:31:49,127 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:31:49,127 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:31:49,330 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:31:49,330 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:31:49,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:31:49,330 INFO L82 PathProgramCache]: Analyzing trace with hash 245930527, now seen corresponding path program 15 times [2019-12-27 00:31:49,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:31:49,331 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797936881] [2019-12-27 00:31:49,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:31:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:31:49,636 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 00:31:49,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797936881] [2019-12-27 00:31:49,636 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574788233] [2019-12-27 00:31:49,637 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 00:31:49,709 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-12-27 00:31:49,710 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:31:49,711 INFO L264 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-27 00:31:49,711 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:31:49,812 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 00:31:49,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:31:49,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 8] total 36 [2019-12-27 00:31:49,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930944099] [2019-12-27 00:31:49,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-27 00:31:49,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:31:49,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-27 00:31:49,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2019-12-27 00:31:49,815 INFO L87 Difference]: Start difference. First operand 204 states and 404 transitions. Second operand 36 states. [2019-12-27 00:32:02,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:32:02,619 INFO L93 Difference]: Finished difference Result 4264 states and 8516 transitions. [2019-12-27 00:32:02,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 482 states. [2019-12-27 00:32:02,620 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2019-12-27 00:32:02,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:32:02,635 INFO L225 Difference]: With dead ends: 4264 [2019-12-27 00:32:02,636 INFO L226 Difference]: Without dead ends: 4252 [2019-12-27 00:32:02,643 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135844 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=60247, Invalid=176435, Unknown=0, NotChecked=0, Total=236682 [2019-12-27 00:32:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2019-12-27 00:32:02,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 379. [2019-12-27 00:32:02,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-12-27 00:32:02,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 801 transitions. [2019-12-27 00:32:02,670 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 801 transitions. Word has length 35 [2019-12-27 00:32:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:32:02,670 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 801 transitions. [2019-12-27 00:32:02,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-27 00:32:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 801 transitions. [2019-12-27 00:32:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-27 00:32:02,672 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:32:02,672 INFO L411 BasicCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:32:02,875 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:32:02,875 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:32:02,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:32:02,875 INFO L82 PathProgramCache]: Analyzing trace with hash -935721754, now seen corresponding path program 16 times [2019-12-27 00:32:02,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:32:02,876 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641158545] [2019-12-27 00:32:02,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:32:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:32:03,225 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 00:32:03,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641158545] [2019-12-27 00:32:03,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989559956] [2019-12-27 00:32:03,226 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 00:32:03,302 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 00:32:03,302 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:32:03,303 INFO L264 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-27 00:32:03,304 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:32:03,535 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 00:32:03,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:32:03,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 14] total 43 [2019-12-27 00:32:03,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289033111] [2019-12-27 00:32:03,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-12-27 00:32:03,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:32:03,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-12-27 00:32:03,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2019-12-27 00:32:03,538 INFO L87 Difference]: Start difference. First operand 379 states and 801 transitions. Second operand 43 states. [2019-12-27 00:33:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:33:06,792 INFO L93 Difference]: Finished difference Result 4559 states and 9114 transitions. [2019-12-27 00:33:06,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1084 states. [2019-12-27 00:33:06,793 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 36 [2019-12-27 00:33:06,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:33:06,813 INFO L225 Difference]: With dead ends: 4559 [2019-12-27 00:33:06,813 INFO L226 Difference]: Without dead ends: 4559 [2019-12-27 00:33:06,836 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1116 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1093 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728882 ImplicationChecksByTransitivity, 58.3s TimeCoverageRelationStatistics Valid=296426, Invalid=901504, Unknown=0, NotChecked=0, Total=1197930 [2019-12-27 00:33:06,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2019-12-27 00:33:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 247. [2019-12-27 00:33:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2019-12-27 00:33:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 490 transitions. [2019-12-27 00:33:06,858 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 490 transitions. Word has length 36 [2019-12-27 00:33:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:33:06,858 INFO L462 AbstractCegarLoop]: Abstraction has 247 states and 490 transitions. [2019-12-27 00:33:06,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-12-27 00:33:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 490 transitions. [2019-12-27 00:33:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-27 00:33:06,859 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:33:06,859 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:33:07,063 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:33:07,064 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:33:07,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:33:07,064 INFO L82 PathProgramCache]: Analyzing trace with hash -812157799, now seen corresponding path program 17 times [2019-12-27 00:33:07,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:33:07,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469305978] [2019-12-27 00:33:07,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:33:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:33:07,449 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 00:33:07,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469305978] [2019-12-27 00:33:07,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90045442] [2019-12-27 00:33:07,450 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 00:33:07,518 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-12-27 00:33:07,518 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:33:07,519 INFO L264 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 00:33:07,520 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:33:07,659 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 00:33:07,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:33:07,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 9] total 40 [2019-12-27 00:33:07,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070459268] [2019-12-27 00:33:07,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-12-27 00:33:07,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:33:07,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-12-27 00:33:07,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2019-12-27 00:33:07,662 INFO L87 Difference]: Start difference. First operand 247 states and 490 transitions. Second operand 40 states. [2019-12-27 00:33:26,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:33:26,574 INFO L93 Difference]: Finished difference Result 5929 states and 11845 transitions. [2019-12-27 00:33:26,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 645 states. [2019-12-27 00:33:26,575 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 38 [2019-12-27 00:33:26,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:33:26,588 INFO L225 Difference]: With dead ends: 5929 [2019-12-27 00:33:26,588 INFO L226 Difference]: Without dead ends: 5915 [2019-12-27 00:33:26,599 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 649 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252388 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=106734, Invalid=316416, Unknown=0, NotChecked=0, Total=423150 [2019-12-27 00:33:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2019-12-27 00:33:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 466. [2019-12-27 00:33:26,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2019-12-27 00:33:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 985 transitions. [2019-12-27 00:33:26,630 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 985 transitions. Word has length 38 [2019-12-27 00:33:26,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:33:26,630 INFO L462 AbstractCegarLoop]: Abstraction has 466 states and 985 transitions. [2019-12-27 00:33:26,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-12-27 00:33:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 985 transitions. [2019-12-27 00:33:26,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-12-27 00:33:26,632 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:33:26,632 INFO L411 BasicCegarLoop]: trace histogram [12, 12, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:33:26,833 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:33:26,833 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:33:26,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:33:26,834 INFO L82 PathProgramCache]: Analyzing trace with hash 623278508, now seen corresponding path program 18 times [2019-12-27 00:33:26,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:33:26,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65661264] [2019-12-27 00:33:26,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:33:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:33:27,242 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 00:33:27,242 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65661264] [2019-12-27 00:33:27,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279432402] [2019-12-27 00:33:27,243 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 00:33:27,337 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-12-27 00:33:27,337 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 00:33:27,338 INFO L264 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-27 00:33:27,339 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 00:33:27,480 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 00:33:27,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 00:33:27,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 10] total 42 [2019-12-27 00:33:27,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089674507] [2019-12-27 00:33:27,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-27 00:33:27,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:33:27,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-27 00:33:27,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1357, Unknown=0, NotChecked=0, Total=1722 [2019-12-27 00:33:27,482 INFO L87 Difference]: Start difference. First operand 466 states and 985 transitions. Second operand 42 states. Received shutdown request... [2019-12-27 00:33:34,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 296 states. [2019-12-27 00:33:34,551 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 00:33:34,552 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-27 00:33:34,556 WARN L227 ceAbstractionStarter]: Timeout [2019-12-27 00:33:34,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 12:33:34 BasicIcfg [2019-12-27 00:33:34,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 00:33:34,558 INFO L168 Benchmark]: Toolchain (without parser) took 249797.69 ms. Allocated memory was 144.7 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 98.6 MB in the beginning and 833.2 MB in the end (delta: -734.6 MB). Peak memory consumption was 844.5 MB. Max. memory is 7.1 GB. [2019-12-27 00:33:34,558 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-12-27 00:33:34,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1041.91 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 98.2 MB in the beginning and 107.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2019-12-27 00:33:34,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.57 ms. Allocated memory is still 202.9 MB. Free memory was 107.6 MB in the beginning and 104.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-12-27 00:33:34,560 INFO L168 Benchmark]: Boogie Preprocessor took 58.65 ms. Allocated memory is still 202.9 MB. Free memory was 104.9 MB in the beginning and 103.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 00:33:34,560 INFO L168 Benchmark]: RCFGBuilder took 536.20 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 103.5 MB in the beginning and 195.1 MB in the end (delta: -91.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2019-12-27 00:33:34,561 INFO L168 Benchmark]: TraceAbstraction took 248088.43 ms. Allocated memory was 235.4 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 195.1 MB in the beginning and 833.2 MB in the end (delta: -638.1 MB). Peak memory consumption was 850.3 MB. Max. memory is 7.1 GB. [2019-12-27 00:33:34,564 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1041.91 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 98.2 MB in the beginning and 107.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 67.57 ms. Allocated memory is still 202.9 MB. Free memory was 107.6 MB in the beginning and 104.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.65 ms. Allocated memory is still 202.9 MB. Free memory was 104.9 MB in the beginning and 103.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 536.20 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 103.5 MB in the beginning and 195.1 MB in the end (delta: -91.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248088.43 ms. Allocated memory was 235.4 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 195.1 MB in the beginning and 833.2 MB in the end (delta: -638.1 MB). Peak memory consumption was 850.3 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, 9 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 296 states, 42 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 331 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Result: TIMEOUT, OverallTime: 247.9s, OverallIterations: 20, TraceHistogramMax: 12, AutomataDifference: 230.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 313 SDtfs, 5761 SDslu, 4243 SDs, 0 SdLazy, 4979 SolverSat, 13089 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7154 GetRequests, 831 SyntacticMatches, 0 SemanticMatches, 6322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246320 ImplicationChecksByTransitivity, 209.5s 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: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 27544 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 5.8s 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