/usr/bin/java -Xmx16000000000 -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 0.1.25-11af1e5 [2020-10-11 15:42:36,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 15:42:36,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 15:42:36,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 15:42:36,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 15:42:36,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 15:42:36,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 15:42:36,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 15:42:36,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 15:42:36,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 15:42:36,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 15:42:36,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 15:42:36,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 15:42:36,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 15:42:36,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 15:42:36,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 15:42:36,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 15:42:36,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 15:42:36,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 15:42:36,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 15:42:36,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 15:42:36,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 15:42:36,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 15:42:36,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 15:42:36,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 15:42:36,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 15:42:36,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 15:42:36,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 15:42:36,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 15:42:36,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 15:42:36,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 15:42:36,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 15:42:36,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 15:42:36,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 15:42:36,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 15:42:36,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 15:42:36,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 15:42:36,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 15:42:36,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 15:42:36,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 15:42:36,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 15:42:36,438 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 [2020-10-11 15:42:36,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 15:42:36,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 15:42:36,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 15:42:36,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 15:42:36,462 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 15:42:36,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 15:42:36,463 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 15:42:36,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 15:42:36,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 15:42:36,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 15:42:36,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 15:42:36,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 15:42:36,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 15:42:36,464 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 15:42:36,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 15:42:36,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 15:42:36,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 15:42:36,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 15:42:36,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 15:42:36,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 15:42:36,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 15:42:36,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 15:42:36,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 15:42:36,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 15:42:36,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 15:42:36,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 15:42:36,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 15:42:36,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 15:42:36,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 15:42:36,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 15:42:36,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 15:42:36,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 15:42:36,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 15:42:36,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 15:42:36,805 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 15:42:36,806 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-10-11 15:42:36,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d9dc8fc/1d123170f4d14d28947fc41bc017e356/FLAG011dfcc10 [2020-10-11 15:42:37,468 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 15:42:37,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-10-11 15:42:37,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d9dc8fc/1d123170f4d14d28947fc41bc017e356/FLAG011dfcc10 [2020-10-11 15:42:37,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d9dc8fc/1d123170f4d14d28947fc41bc017e356 [2020-10-11 15:42:37,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 15:42:37,686 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 15:42:37,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 15:42:37,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 15:42:37,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 15:42:37,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:42:37" (1/1) ... [2020-10-11 15:42:37,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f56fd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:37, skipping insertion in model container [2020-10-11 15:42:37,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:42:37" (1/1) ... [2020-10-11 15:42:37,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 15:42:37,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 15:42:38,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:42:38,516 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 15:42:38,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 15:42:38,837 INFO L208 MainTranslator]: Completed translation [2020-10-11 15:42:38,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38 WrapperNode [2020-10-11 15:42:38,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 15:42:38,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 15:42:38,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 15:42:38,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 15:42:38,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38" (1/1) ... [2020-10-11 15:42:38,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38" (1/1) ... [2020-10-11 15:42:38,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 15:42:38,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 15:42:38,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 15:42:38,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 15:42:38,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38" (1/1) ... [2020-10-11 15:42:38,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38" (1/1) ... [2020-10-11 15:42:38,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38" (1/1) ... [2020-10-11 15:42:38,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38" (1/1) ... [2020-10-11 15:42:39,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38" (1/1) ... [2020-10-11 15:42:39,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38" (1/1) ... [2020-10-11 15:42:39,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38" (1/1) ... [2020-10-11 15:42:39,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 15:42:39,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 15:42:39,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 15:42:39,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 15:42:39,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38" (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 [2020-10-11 15:42:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 15:42:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 15:42:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 15:42:39,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2020-10-11 15:42:39,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2020-10-11 15:42:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 15:42:39,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 15:42:39,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 15:42:39,183 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 15:42:39,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 15:42:39,876 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 15:42:39,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:42:39 BoogieIcfgContainer [2020-10-11 15:42:39,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 15:42:39,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 15:42:39,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 15:42:39,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 15:42:39,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:42:37" (1/3) ... [2020-10-11 15:42:39,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fd7e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:42:39, skipping insertion in model container [2020-10-11 15:42:39,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:42:38" (2/3) ... [2020-10-11 15:42:39,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fd7e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:42:39, skipping insertion in model container [2020-10-11 15:42:39,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:42:39" (3/3) ... [2020-10-11 15:42:39,890 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2020-10-11 15:42:39,904 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 15:42:39,904 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 15:42:39,913 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 15:42:39,914 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 15:42:39,943 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,943 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,944 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,944 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,944 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,944 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,945 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,945 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,945 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,946 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,946 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,946 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,946 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,947 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,947 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,947 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,947 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,948 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,948 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,948 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,948 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,952 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,952 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,953 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,953 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,953 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,953 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,953 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,954 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 15:42:39,980 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-11 15:42:40,003 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 15:42:40,003 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 15:42:40,003 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 15:42:40,003 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 15:42:40,003 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 15:42:40,004 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 15:42:40,004 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 15:42:40,004 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 15:42:40,018 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 15:42:40,021 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 85 transitions, 178 flow [2020-10-11 15:42:40,024 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 85 transitions, 178 flow [2020-10-11 15:42:40,026 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 82 places, 85 transitions, 178 flow [2020-10-11 15:42:40,075 INFO L129 PetriNetUnfolder]: 7/84 cut-off events. [2020-10-11 15:42:40,075 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-11 15:42:40,080 INFO L80 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 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-10-11 15:42:40,099 INFO L117 LiptonReduction]: Number of co-enabled transitions 640 [2020-10-11 15:42:41,591 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-11 15:42:41,788 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-11 15:42:42,403 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-11 15:42:42,743 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-11 15:42:43,268 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-11 15:42:43,684 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-11 15:42:45,077 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 149 DAG size of output: 131 [2020-10-11 15:42:45,747 WARN L193 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-11 15:42:45,752 INFO L132 LiptonReduction]: Checked pairs total: 580 [2020-10-11 15:42:45,752 INFO L134 LiptonReduction]: Total number of compositions: 83 [2020-10-11 15:42:45,759 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 13 transitions, 34 flow [2020-10-11 15:42:45,768 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 17 states. [2020-10-11 15:42:45,770 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-10-11 15:42:45,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-11 15:42:45,777 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:45,778 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:45,778 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:45,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1450466956, now seen corresponding path program 1 times [2020-10-11 15:42:45,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:45,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856280212] [2020-10-11 15:42:45,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:42:46,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856280212] [2020-10-11 15:42:46,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 15:42:46,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 15:42:46,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537004071] [2020-10-11 15:42:46,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:42:46,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:46,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:42:46,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 15:42:46,077 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-10-11 15:42:46,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:46,121 INFO L93 Difference]: Finished difference Result 20 states and 36 transitions. [2020-10-11 15:42:46,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:42:46,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-11 15:42:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:46,132 INFO L225 Difference]: With dead ends: 20 [2020-10-11 15:42:46,133 INFO L226 Difference]: Without dead ends: 20 [2020-10-11 15:42:46,134 INFO L673 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 [2020-10-11 15:42:46,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-11 15:42:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-11 15:42:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-11 15:42:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 36 transitions. [2020-10-11 15:42:46,169 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 36 transitions. Word has length 8 [2020-10-11 15:42:46,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:46,170 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 36 transitions. [2020-10-11 15:42:46,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:42:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 36 transitions. [2020-10-11 15:42:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-11 15:42:46,171 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:46,171 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:46,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 15:42:46,172 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:46,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:46,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1984436175, now seen corresponding path program 1 times [2020-10-11 15:42:46,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:46,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908329582] [2020-10-11 15:42:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:42:46,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908329582] [2020-10-11 15:42:46,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273648526] [2020-10-11 15:42:46,264 INFO L95 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 [2020-10-11 15:42:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:46,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-11 15:42:46,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 15:42:46,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-11 15:42:46,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-11 15:42:46,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171162824] [2020-10-11 15:42:46,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 15:42:46,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:46,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 15:42:46,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:42:46,390 INFO L87 Difference]: Start difference. First operand 20 states and 36 transitions. Second operand 3 states. [2020-10-11 15:42:46,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:46,402 INFO L93 Difference]: Finished difference Result 28 states and 52 transitions. [2020-10-11 15:42:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 15:42:46,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-11 15:42:46,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:46,403 INFO L225 Difference]: With dead ends: 28 [2020-10-11 15:42:46,404 INFO L226 Difference]: Without dead ends: 28 [2020-10-11 15:42:46,405 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-11 15:42:46,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-11 15:42:46,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-10-11 15:42:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-11 15:42:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 44 transitions. [2020-10-11 15:42:46,410 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 44 transitions. Word has length 9 [2020-10-11 15:42:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:46,410 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 44 transitions. [2020-10-11 15:42:46,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 15:42:46,411 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 44 transitions. [2020-10-11 15:42:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-11 15:42:46,411 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:46,412 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:46,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-11 15:42:46,625 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:46,626 INFO L82 PathProgramCache]: Analyzing trace with hash -436238306, now seen corresponding path program 1 times [2020-10-11 15:42:46,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:46,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280033576] [2020-10-11 15:42:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:42:46,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280033576] [2020-10-11 15:42:46,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829713583] [2020-10-11 15:42:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-11 15:42:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:46,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-11 15:42:46,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-11 15:42:46,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:46,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-11 15:42:46,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544013603] [2020-10-11 15:42:46,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:42:46,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:46,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:42:46,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:42:46,812 INFO L87 Difference]: Start difference. First operand 24 states and 44 transitions. Second operand 6 states. [2020-10-11 15:42:46,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:46,920 INFO L93 Difference]: Finished difference Result 44 states and 84 transitions. [2020-10-11 15:42:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 15:42:46,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-11 15:42:46,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:46,924 INFO L225 Difference]: With dead ends: 44 [2020-10-11 15:42:46,925 INFO L226 Difference]: Without dead ends: 44 [2020-10-11 15:42:46,925 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-11 15:42:46,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-11 15:42:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-11 15:42:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-11 15:42:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 74 transitions. [2020-10-11 15:42:46,932 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 74 transitions. Word has length 11 [2020-10-11 15:42:46,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:46,932 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 74 transitions. [2020-10-11 15:42:46,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:42:46,933 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 74 transitions. [2020-10-11 15:42:46,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-11 15:42:46,933 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:46,934 INFO L421 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:47,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:42:47,148 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:47,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1899195462, now seen corresponding path program 2 times [2020-10-11 15:42:47,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:47,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799546331] [2020-10-11 15:42:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-11 15:42:47,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799546331] [2020-10-11 15:42:47,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162042007] [2020-10-11 15:42:47,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-10-11 15:42:47,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 15:42:47,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:42:47,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-11 15:42:47,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-11 15:42:47,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:47,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-11 15:42:47,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141531515] [2020-10-11 15:42:47,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 15:42:47,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:47,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 15:42:47,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:42:47,330 INFO L87 Difference]: Start difference. First operand 39 states and 74 transitions. Second operand 6 states. [2020-10-11 15:42:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:47,354 INFO L93 Difference]: Finished difference Result 54 states and 104 transitions. [2020-10-11 15:42:47,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 15:42:47,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-11 15:42:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:47,356 INFO L225 Difference]: With dead ends: 54 [2020-10-11 15:42:47,356 INFO L226 Difference]: Without dead ends: 54 [2020-10-11 15:42:47,357 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-11 15:42:47,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-11 15:42:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-10-11 15:42:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-11 15:42:47,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 94 transitions. [2020-10-11 15:42:47,366 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 94 transitions. Word has length 14 [2020-10-11 15:42:47,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:47,367 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 94 transitions. [2020-10-11 15:42:47,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 15:42:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 94 transitions. [2020-10-11 15:42:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 15:42:47,368 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:47,368 INFO L421 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:47,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:42:47,584 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:47,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:47,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1378033683, now seen corresponding path program 3 times [2020-10-11 15:42:47,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:47,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260654154] [2020-10-11 15:42:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-11 15:42:47,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260654154] [2020-10-11 15:42:47,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178900870] [2020-10-11 15:42:47,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-10-11 15:42:47,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-11 15:42:47,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:42:47,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-11 15:42:47,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:47,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 15:42:47,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:47,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-10-11 15:42:47,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788982737] [2020-10-11 15:42:47,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-11 15:42:47,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:47,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-11 15:42:47,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-11 15:42:47,793 INFO L87 Difference]: Start difference. First operand 49 states and 94 transitions. Second operand 9 states. [2020-10-11 15:42:48,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:48,089 INFO L93 Difference]: Finished difference Result 76 states and 148 transitions. [2020-10-11 15:42:48,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-11 15:42:48,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-11 15:42:48,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:48,095 INFO L225 Difference]: With dead ends: 76 [2020-10-11 15:42:48,095 INFO L226 Difference]: Without dead ends: 76 [2020-10-11 15:42:48,095 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2020-10-11 15:42:48,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-11 15:42:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-10-11 15:42:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-11 15:42:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 136 transitions. [2020-10-11 15:42:48,104 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 136 transitions. Word has length 16 [2020-10-11 15:42:48,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:48,104 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 136 transitions. [2020-10-11 15:42:48,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-11 15:42:48,105 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 136 transitions. [2020-10-11 15:42:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 15:42:48,106 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:48,106 INFO L421 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:48,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:42:48,316 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:48,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:48,317 INFO L82 PathProgramCache]: Analyzing trace with hash -115221563, now seen corresponding path program 4 times [2020-10-11 15:42:48,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:48,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867186995] [2020-10-11 15:42:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 15:42:48,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867186995] [2020-10-11 15:42:48,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161736950] [2020-10-11 15:42:48,409 INFO L93 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 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 [2020-10-11 15:42:48,468 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 15:42:48,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:42:48,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-11 15:42:48,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 15:42:48,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:48,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-11 15:42:48,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764847370] [2020-10-11 15:42:48,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 15:42:48,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:48,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 15:42:48,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-11 15:42:48,499 INFO L87 Difference]: Start difference. First operand 70 states and 136 transitions. Second operand 8 states. [2020-10-11 15:42:48,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:48,531 INFO L93 Difference]: Finished difference Result 88 states and 172 transitions. [2020-10-11 15:42:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 15:42:48,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-11 15:42:48,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:48,533 INFO L225 Difference]: With dead ends: 88 [2020-10-11 15:42:48,533 INFO L226 Difference]: Without dead ends: 88 [2020-10-11 15:42:48,534 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-11 15:42:48,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-11 15:42:48,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2020-10-11 15:42:48,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-11 15:42:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2020-10-11 15:42:48,543 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 19 [2020-10-11 15:42:48,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:48,543 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2020-10-11 15:42:48,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 15:42:48,544 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2020-10-11 15:42:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-11 15:42:48,548 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:48,548 INFO L421 BasicCegarLoop]: trace histogram [5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:48,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-11 15:42:48,762 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:48,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:48,763 INFO L82 PathProgramCache]: Analyzing trace with hash -882362510, now seen corresponding path program 5 times [2020-10-11 15:42:48,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:48,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987308152] [2020-10-11 15:42:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 15:42:48,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987308152] [2020-10-11 15:42:48,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952606373] [2020-10-11 15:42:48,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-10-11 15:42:48,909 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-11 15:42:48,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:42:48,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-11 15:42:48,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-11 15:42:48,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:48,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2020-10-11 15:42:48,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729141251] [2020-10-11 15:42:48,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:42:48,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:48,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:42:48,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:42:48,960 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 12 states. [2020-10-11 15:42:49,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:49,493 INFO L93 Difference]: Finished difference Result 116 states and 228 transitions. [2020-10-11 15:42:49,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-11 15:42:49,495 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-10-11 15:42:49,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:49,497 INFO L225 Difference]: With dead ends: 116 [2020-10-11 15:42:49,497 INFO L226 Difference]: Without dead ends: 116 [2020-10-11 15:42:49,499 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=420, Invalid=840, Unknown=0, NotChecked=0, Total=1260 [2020-10-11 15:42:49,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-11 15:42:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2020-10-11 15:42:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-11 15:42:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 214 transitions. [2020-10-11 15:42:49,521 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 214 transitions. Word has length 21 [2020-10-11 15:42:49,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:49,522 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 214 transitions. [2020-10-11 15:42:49,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:42:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 214 transitions. [2020-10-11 15:42:49,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-11 15:42:49,524 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:49,524 INFO L421 BasicCegarLoop]: trace histogram [6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:49,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:42:49,737 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:49,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1928037594, now seen corresponding path program 6 times [2020-10-11 15:42:49,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:49,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18565579] [2020-10-11 15:42:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-11 15:42:49,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18565579] [2020-10-11 15:42:49,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109011674] [2020-10-11 15:42:49,835 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-10-11 15:42:49,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-11 15:42:49,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:42:49,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-11 15:42:49,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-11 15:42:50,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:50,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2020-10-11 15:42:50,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853803553] [2020-10-11 15:42:50,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-11 15:42:50,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:50,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-11 15:42:50,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-11 15:42:50,033 INFO L87 Difference]: Start difference. First operand 109 states and 214 transitions. Second operand 14 states. [2020-10-11 15:42:50,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:50,828 INFO L93 Difference]: Finished difference Result 148 states and 292 transitions. [2020-10-11 15:42:50,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-11 15:42:50,829 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2020-10-11 15:42:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:50,830 INFO L225 Difference]: With dead ends: 148 [2020-10-11 15:42:50,830 INFO L226 Difference]: Without dead ends: 148 [2020-10-11 15:42:50,832 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=756, Invalid=1596, Unknown=0, NotChecked=0, Total=2352 [2020-10-11 15:42:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-11 15:42:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 140. [2020-10-11 15:42:50,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 15:42:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 276 transitions. [2020-10-11 15:42:50,842 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 276 transitions. Word has length 24 [2020-10-11 15:42:50,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:50,842 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 276 transitions. [2020-10-11 15:42:50,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-11 15:42:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 276 transitions. [2020-10-11 15:42:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-11 15:42:50,844 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:50,845 INFO L421 BasicCegarLoop]: trace histogram [7, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:51,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:42:51,057 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:51,057 INFO L82 PathProgramCache]: Analyzing trace with hash 867592876, now seen corresponding path program 7 times [2020-10-11 15:42:51,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:51,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357637130] [2020-10-11 15:42:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-11 15:42:51,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357637130] [2020-10-11 15:42:51,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864041663] [2020-10-11 15:42:51,174 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-10-11 15:42:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:51,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:42:51,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-11 15:42:51,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:51,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-10-11 15:42:51,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955404442] [2020-10-11 15:42:51,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-11 15:42:51,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:51,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-11 15:42:51,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-11 15:42:51,309 INFO L87 Difference]: Start difference. First operand 140 states and 276 transitions. Second operand 11 states. [2020-10-11 15:42:51,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:51,361 INFO L93 Difference]: Finished difference Result 164 states and 324 transitions. [2020-10-11 15:42:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 15:42:51,362 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-11 15:42:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:51,364 INFO L225 Difference]: With dead ends: 164 [2020-10-11 15:42:51,364 INFO L226 Difference]: Without dead ends: 164 [2020-10-11 15:42:51,365 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-11 15:42:51,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-11 15:42:51,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 156. [2020-10-11 15:42:51,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-11 15:42:51,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 308 transitions. [2020-10-11 15:42:51,373 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 308 transitions. Word has length 27 [2020-10-11 15:42:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:51,374 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 308 transitions. [2020-10-11 15:42:51,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-11 15:42:51,374 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 308 transitions. [2020-10-11 15:42:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-11 15:42:51,376 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:51,376 INFO L421 BasicCegarLoop]: trace histogram [8, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:51,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-11 15:42:51,590 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:51,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:51,591 INFO L82 PathProgramCache]: Analyzing trace with hash -441398951, now seen corresponding path program 8 times [2020-10-11 15:42:51,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:51,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849548383] [2020-10-11 15:42:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-11 15:42:51,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849548383] [2020-10-11 15:42:51,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708601284] [2020-10-11 15:42:51,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-10-11 15:42:51,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 15:42:51,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:42:51,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 15:42:51,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-11 15:42:51,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:51,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-11 15:42:51,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899834861] [2020-10-11 15:42:51,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-11 15:42:51,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:51,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-11 15:42:51,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:42:51,844 INFO L87 Difference]: Start difference. First operand 156 states and 308 transitions. Second operand 12 states. [2020-10-11 15:42:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:51,894 INFO L93 Difference]: Finished difference Result 180 states and 356 transitions. [2020-10-11 15:42:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 15:42:51,895 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-10-11 15:42:51,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:51,897 INFO L225 Difference]: With dead ends: 180 [2020-10-11 15:42:51,898 INFO L226 Difference]: Without dead ends: 180 [2020-10-11 15:42:51,898 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-11 15:42:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-11 15:42:51,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2020-10-11 15:42:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-11 15:42:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 340 transitions. [2020-10-11 15:42:51,905 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 340 transitions. Word has length 29 [2020-10-11 15:42:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:51,905 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 340 transitions. [2020-10-11 15:42:51,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-11 15:42:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 340 transitions. [2020-10-11 15:42:51,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-11 15:42:51,907 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:51,907 INFO L421 BasicCegarLoop]: trace histogram [9, 9, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:52,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:42:52,123 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:52,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:52,124 INFO L82 PathProgramCache]: Analyzing trace with hash 42873030, now seen corresponding path program 9 times [2020-10-11 15:42:52,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:52,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615206178] [2020-10-11 15:42:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-11 15:42:52,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615206178] [2020-10-11 15:42:52,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897172054] [2020-10-11 15:42:52,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-10-11 15:42:52,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-11 15:42:52,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:42:52,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-11 15:42:52,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-11 15:42:52,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:52,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2020-10-11 15:42:52,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582499108] [2020-10-11 15:42:52,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 15:42:52,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:52,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 15:42:52,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2020-10-11 15:42:52,480 INFO L87 Difference]: Start difference. First operand 172 states and 340 transitions. Second operand 18 states. [2020-10-11 15:42:54,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:54,114 INFO L93 Difference]: Finished difference Result 220 states and 436 transitions. [2020-10-11 15:42:54,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-10-11 15:42:54,116 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 31 [2020-10-11 15:42:54,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:54,117 INFO L225 Difference]: With dead ends: 220 [2020-10-11 15:42:54,117 INFO L226 Difference]: Without dead ends: 220 [2020-10-11 15:42:54,121 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1848, Invalid=4158, Unknown=0, NotChecked=0, Total=6006 [2020-10-11 15:42:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-11 15:42:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 211. [2020-10-11 15:42:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-11 15:42:54,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 418 transitions. [2020-10-11 15:42:54,127 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 418 transitions. Word has length 31 [2020-10-11 15:42:54,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:54,128 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 418 transitions. [2020-10-11 15:42:54,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 15:42:54,128 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 418 transitions. [2020-10-11 15:42:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-11 15:42:54,130 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:54,130 INFO L421 BasicCegarLoop]: trace histogram [10, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:54,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:42:54,345 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:54,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:54,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1510869138, now seen corresponding path program 10 times [2020-10-11 15:42:54,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:54,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021543214] [2020-10-11 15:42:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-11 15:42:54,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021543214] [2020-10-11 15:42:54,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53333670] [2020-10-11 15:42:54,470 INFO L93 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 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 [2020-10-11 15:42:54,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 15:42:54,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:42:54,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 15:42:54,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-11 15:42:54,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:54,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-10-11 15:42:54,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056748990] [2020-10-11 15:42:54,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-11 15:42:54,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:54,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-11 15:42:54,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-11 15:42:54,587 INFO L87 Difference]: Start difference. First operand 211 states and 418 transitions. Second operand 14 states. [2020-10-11 15:42:54,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:54,644 INFO L93 Difference]: Finished difference Result 238 states and 472 transitions. [2020-10-11 15:42:54,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 15:42:54,645 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-11 15:42:54,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:54,647 INFO L225 Difference]: With dead ends: 238 [2020-10-11 15:42:54,647 INFO L226 Difference]: Without dead ends: 238 [2020-10-11 15:42:54,647 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-11 15:42:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-11 15:42:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 229. [2020-10-11 15:42:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-11 15:42:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 454 transitions. [2020-10-11 15:42:54,654 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 454 transitions. Word has length 34 [2020-10-11 15:42:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:54,654 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 454 transitions. [2020-10-11 15:42:54,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-11 15:42:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 454 transitions. [2020-10-11 15:42:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-11 15:42:54,656 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:54,656 INFO L421 BasicCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:54,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-11 15:42:54,867 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:54,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1014578501, now seen corresponding path program 11 times [2020-10-11 15:42:54,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:54,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116208718] [2020-10-11 15:42:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-11 15:42:55,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116208718] [2020-10-11 15:42:55,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122394107] [2020-10-11 15:42:55,028 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-10-11 15:42:55,094 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-11 15:42:55,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:42:55,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-11 15:42:55,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-11 15:42:55,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:55,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2020-10-11 15:42:55,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275324338] [2020-10-11 15:42:55,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-11 15:42:55,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:55,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-11 15:42:55,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-11 15:42:55,218 INFO L87 Difference]: Start difference. First operand 229 states and 454 transitions. Second operand 21 states. [2020-10-11 15:42:58,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:42:58,189 INFO L93 Difference]: Finished difference Result 284 states and 564 transitions. [2020-10-11 15:42:58,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-10-11 15:42:58,191 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2020-10-11 15:42:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:42:58,195 INFO L225 Difference]: With dead ends: 284 [2020-10-11 15:42:58,195 INFO L226 Difference]: Without dead ends: 284 [2020-10-11 15:42:58,207 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3563 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3276, Invalid=7644, Unknown=0, NotChecked=0, Total=10920 [2020-10-11 15:42:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-11 15:42:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 274. [2020-10-11 15:42:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-11 15:42:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 544 transitions. [2020-10-11 15:42:58,217 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 544 transitions. Word has length 36 [2020-10-11 15:42:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:42:58,217 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 544 transitions. [2020-10-11 15:42:58,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-11 15:42:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 544 transitions. [2020-10-11 15:42:58,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-11 15:42:58,218 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:42:58,219 INFO L421 BasicCegarLoop]: trace histogram [12, 12, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:42:58,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-11 15:42:58,433 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:42:58,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:42:58,433 INFO L82 PathProgramCache]: Analyzing trace with hash -299405075, now seen corresponding path program 12 times [2020-10-11 15:42:58,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:42:58,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888349711] [2020-10-11 15:42:58,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:42:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:42:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-11 15:42:58,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888349711] [2020-10-11 15:42:58,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166811953] [2020-10-11 15:42:58,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-10-11 15:42:58,723 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-11 15:42:58,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:42:58,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-11 15:42:58,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:42:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-11 15:42:58,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:42:58,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2020-10-11 15:42:58,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493868820] [2020-10-11 15:42:58,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 15:42:58,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:42:58,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 15:42:58,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-11 15:42:58,854 INFO L87 Difference]: Start difference. First operand 274 states and 544 transitions. Second operand 23 states. [2020-10-11 15:43:02,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:43:02,625 INFO L93 Difference]: Finished difference Result 334 states and 664 transitions. [2020-10-11 15:43:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2020-10-11 15:43:02,626 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 39 [2020-10-11 15:43:02,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:43:02,629 INFO L225 Difference]: With dead ends: 334 [2020-10-11 15:43:02,630 INFO L226 Difference]: Without dead ends: 334 [2020-10-11 15:43:02,634 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5452 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4725, Invalid=11277, Unknown=0, NotChecked=0, Total=16002 [2020-10-11 15:43:02,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-11 15:43:02,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 323. [2020-10-11 15:43:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-11 15:43:02,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 642 transitions. [2020-10-11 15:43:02,642 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 642 transitions. Word has length 39 [2020-10-11 15:43:02,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:43:02,643 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 642 transitions. [2020-10-11 15:43:02,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 15:43:02,643 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 642 transitions. [2020-10-11 15:43:02,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-11 15:43:02,644 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:43:02,644 INFO L421 BasicCegarLoop]: trace histogram [13, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:43:02,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-11 15:43:02,860 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:43:02,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:43:02,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1077564853, now seen corresponding path program 13 times [2020-10-11 15:43:02,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:43:02,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852684302] [2020-10-11 15:43:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:43:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:43:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-11 15:43:03,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852684302] [2020-10-11 15:43:03,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990436658] [2020-10-11 15:43:03,040 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY 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 [2020-10-11 15:43:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:43:03,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-11 15:43:03,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:43:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-11 15:43:03,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:43:03,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-10-11 15:43:03,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71115501] [2020-10-11 15:43:03,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 15:43:03,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:43:03,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 15:43:03,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-11 15:43:03,145 INFO L87 Difference]: Start difference. First operand 323 states and 642 transitions. Second operand 17 states. [2020-10-11 15:43:03,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:43:03,211 INFO L93 Difference]: Finished difference Result 356 states and 708 transitions. [2020-10-11 15:43:03,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 15:43:03,217 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 42 [2020-10-11 15:43:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:43:03,219 INFO L225 Difference]: With dead ends: 356 [2020-10-11 15:43:03,219 INFO L226 Difference]: Without dead ends: 356 [2020-10-11 15:43:03,222 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-11 15:43:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-11 15:43:03,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 345. [2020-10-11 15:43:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-10-11 15:43:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 686 transitions. [2020-10-11 15:43:03,236 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 686 transitions. Word has length 42 [2020-10-11 15:43:03,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:43:03,236 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 686 transitions. [2020-10-11 15:43:03,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 15:43:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 686 transitions. [2020-10-11 15:43:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-11 15:43:03,238 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:43:03,239 INFO L421 BasicCegarLoop]: trace histogram [14, 14, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:43:03,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:43:03,452 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:43:03,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:43:03,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1718191106, now seen corresponding path program 14 times [2020-10-11 15:43:03,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:43:03,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921304136] [2020-10-11 15:43:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:43:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:43:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-11 15:43:03,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921304136] [2020-10-11 15:43:03,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262965023] [2020-10-11 15:43:03,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-10-11 15:43:03,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 15:43:03,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:43:03,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-11 15:43:03,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:43:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-11 15:43:03,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:43:03,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-11 15:43:03,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127419119] [2020-10-11 15:43:03,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 15:43:03,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:43:03,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 15:43:03,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-11 15:43:03,813 INFO L87 Difference]: Start difference. First operand 345 states and 686 transitions. Second operand 18 states. [2020-10-11 15:43:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:43:03,881 INFO L93 Difference]: Finished difference Result 378 states and 752 transitions. [2020-10-11 15:43:03,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 15:43:03,882 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 44 [2020-10-11 15:43:03,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:43:03,884 INFO L225 Difference]: With dead ends: 378 [2020-10-11 15:43:03,884 INFO L226 Difference]: Without dead ends: 378 [2020-10-11 15:43:03,885 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-11 15:43:03,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-10-11 15:43:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 367. [2020-10-11 15:43:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-10-11 15:43:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 730 transitions. [2020-10-11 15:43:03,897 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 730 transitions. Word has length 44 [2020-10-11 15:43:03,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:43:03,897 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 730 transitions. [2020-10-11 15:43:03,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 15:43:03,897 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 730 transitions. [2020-10-11 15:43:03,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-11 15:43:03,899 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:43:03,899 INFO L421 BasicCegarLoop]: trace histogram [15, 15, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:43:04,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-11 15:43:04,113 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:43:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:43:04,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1115270385, now seen corresponding path program 15 times [2020-10-11 15:43:04,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:43:04,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003375276] [2020-10-11 15:43:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:43:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:43:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-11 15:43:04,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003375276] [2020-10-11 15:43:04,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518679183] [2020-10-11 15:43:04,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-10-11 15:43:04,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-10-11 15:43:04,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:43:04,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-11 15:43:04,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:43:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 15 proven. 36 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2020-10-11 15:43:04,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:43:04,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 27 [2020-10-11 15:43:04,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624602286] [2020-10-11 15:43:04,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-11 15:43:04,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:43:04,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-11 15:43:04,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-11 15:43:04,589 INFO L87 Difference]: Start difference. First operand 367 states and 730 transitions. Second operand 27 states. [2020-10-11 15:43:10,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:43:10,889 INFO L93 Difference]: Finished difference Result 436 states and 868 transitions. [2020-10-11 15:43:10,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2020-10-11 15:43:10,891 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 46 [2020-10-11 15:43:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:43:10,893 INFO L225 Difference]: With dead ends: 436 [2020-10-11 15:43:10,893 INFO L226 Difference]: Without dead ends: 436 [2020-10-11 15:43:10,901 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10431 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=8415, Invalid=20655, Unknown=0, NotChecked=0, Total=29070 [2020-10-11 15:43:10,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-10-11 15:43:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 424. [2020-10-11 15:43:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-10-11 15:43:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 844 transitions. [2020-10-11 15:43:10,911 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 844 transitions. Word has length 46 [2020-10-11 15:43:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:43:10,911 INFO L481 AbstractCegarLoop]: Abstraction has 424 states and 844 transitions. [2020-10-11 15:43:10,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-11 15:43:10,912 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 844 transitions. [2020-10-11 15:43:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-11 15:43:10,913 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:43:10,913 INFO L421 BasicCegarLoop]: trace histogram [16, 16, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:43:11,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-11 15:43:11,129 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:43:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:43:11,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1391947135, now seen corresponding path program 16 times [2020-10-11 15:43:11,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:43:11,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086979093] [2020-10-11 15:43:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:43:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:43:11,357 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-11 15:43:11,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086979093] [2020-10-11 15:43:11,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130416680] [2020-10-11 15:43:11,357 INFO L93 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 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 [2020-10-11 15:43:11,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 15:43:11,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:43:11,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-11 15:43:11,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:43:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-11 15:43:11,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:43:11,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-10-11 15:43:11,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737290212] [2020-10-11 15:43:11,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-11 15:43:11,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:43:11,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-11 15:43:11,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:43:11,520 INFO L87 Difference]: Start difference. First operand 424 states and 844 transitions. Second operand 20 states. [2020-10-11 15:43:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:43:11,603 INFO L93 Difference]: Finished difference Result 460 states and 916 transitions. [2020-10-11 15:43:11,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-11 15:43:11,604 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 49 [2020-10-11 15:43:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:43:11,607 INFO L225 Difference]: With dead ends: 460 [2020-10-11 15:43:11,607 INFO L226 Difference]: Without dead ends: 460 [2020-10-11 15:43:11,607 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-11 15:43:11,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-11 15:43:11,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 448. [2020-10-11 15:43:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-11 15:43:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 892 transitions. [2020-10-11 15:43:11,618 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 892 transitions. Word has length 49 [2020-10-11 15:43:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:43:11,618 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 892 transitions. [2020-10-11 15:43:11,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-11 15:43:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 892 transitions. [2020-10-11 15:43:11,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-11 15:43:11,620 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:43:11,620 INFO L421 BasicCegarLoop]: trace histogram [17, 17, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:43:11,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-11 15:43:11,835 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:43:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:43:11,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1588788882, now seen corresponding path program 17 times [2020-10-11 15:43:11,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:43:11,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776954445] [2020-10-11 15:43:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:43:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:43:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-11 15:43:12,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776954445] [2020-10-11 15:43:12,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16808971] [2020-10-11 15:43:12,099 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2020-10-11 15:43:12,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-10-11 15:43:12,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:43:12,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-11 15:43:12,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:43:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 17 proven. 45 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-10-11 15:43:12,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:43:12,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 30 [2020-10-11 15:43:12,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211774426] [2020-10-11 15:43:12,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-11 15:43:12,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:43:12,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-11 15:43:12,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2020-10-11 15:43:12,372 INFO L87 Difference]: Start difference. First operand 448 states and 892 transitions. Second operand 30 states. [2020-10-11 15:43:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:43:21,768 INFO L93 Difference]: Finished difference Result 524 states and 1044 transitions. [2020-10-11 15:43:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2020-10-11 15:43:21,769 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 51 [2020-10-11 15:43:21,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:43:21,772 INFO L225 Difference]: With dead ends: 524 [2020-10-11 15:43:21,773 INFO L226 Difference]: Without dead ends: 524 [2020-10-11 15:43:21,776 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16280 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=12540, Invalid=31350, Unknown=0, NotChecked=0, Total=43890 [2020-10-11 15:43:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-10-11 15:43:21,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 511. [2020-10-11 15:43:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-11 15:43:21,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 1018 transitions. [2020-10-11 15:43:21,786 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 1018 transitions. Word has length 51 [2020-10-11 15:43:21,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:43:21,787 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 1018 transitions. [2020-10-11 15:43:21,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-11 15:43:21,787 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 1018 transitions. [2020-10-11 15:43:21,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-11 15:43:21,788 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:43:21,789 INFO L421 BasicCegarLoop]: trace histogram [18, 18, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:43:22,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:43:22,003 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:43:22,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:43:22,003 INFO L82 PathProgramCache]: Analyzing trace with hash 835392874, now seen corresponding path program 18 times [2020-10-11 15:43:22,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:43:22,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948655161] [2020-10-11 15:43:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:43:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:43:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-11 15:43:22,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948655161] [2020-10-11 15:43:22,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003698999] [2020-10-11 15:43:22,298 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:43:22,405 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-11 15:43:22,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:43:22,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-11 15:43:22,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:43:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 18 proven. 55 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-10-11 15:43:22,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:43:22,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 32 [2020-10-11 15:43:22,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236216018] [2020-10-11 15:43:22,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-11 15:43:22,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:43:22,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-11 15:43:22,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2020-10-11 15:43:22,623 INFO L87 Difference]: Start difference. First operand 511 states and 1018 transitions. Second operand 32 states. [2020-10-11 15:43:34,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:43:34,871 INFO L93 Difference]: Finished difference Result 592 states and 1180 transitions. [2020-10-11 15:43:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2020-10-11 15:43:34,872 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 54 [2020-10-11 15:43:34,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:43:34,875 INFO L225 Difference]: With dead ends: 592 [2020-10-11 15:43:34,875 INFO L226 Difference]: Without dead ends: 592 [2020-10-11 15:43:34,879 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21934 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=16380, Invalid=41460, Unknown=0, NotChecked=0, Total=57840 [2020-10-11 15:43:34,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-10-11 15:43:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 578. [2020-10-11 15:43:34,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-11 15:43:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1152 transitions. [2020-10-11 15:43:34,890 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1152 transitions. Word has length 54 [2020-10-11 15:43:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:43:34,890 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1152 transitions. [2020-10-11 15:43:34,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-11 15:43:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1152 transitions. [2020-10-11 15:43:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-11 15:43:34,892 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:43:34,892 INFO L421 BasicCegarLoop]: trace histogram [19, 19, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:43:35,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:43:35,106 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:43:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:43:35,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1589265368, now seen corresponding path program 19 times [2020-10-11 15:43:35,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:43:35,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12854376] [2020-10-11 15:43:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:43:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:43:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-11 15:43:35,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12854376] [2020-10-11 15:43:35,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204518956] [2020-10-11 15:43:35,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:43:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:43:35,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-11 15:43:35,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:43:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-11 15:43:35,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:43:35,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-10-11 15:43:35,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828440928] [2020-10-11 15:43:35,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 15:43:35,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:43:35,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 15:43:35,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-11 15:43:35,546 INFO L87 Difference]: Start difference. First operand 578 states and 1152 transitions. Second operand 23 states. [2020-10-11 15:43:35,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:43:35,642 INFO L93 Difference]: Finished difference Result 606 states and 1208 transitions. [2020-10-11 15:43:35,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 15:43:35,643 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-10-11 15:43:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:43:35,647 INFO L225 Difference]: With dead ends: 606 [2020-10-11 15:43:35,647 INFO L226 Difference]: Without dead ends: 606 [2020-10-11 15:43:35,647 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-11 15:43:35,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2020-10-11 15:43:35,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 606. [2020-10-11 15:43:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-10-11 15:43:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1208 transitions. [2020-10-11 15:43:35,658 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1208 transitions. Word has length 57 [2020-10-11 15:43:35,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:43:35,658 INFO L481 AbstractCegarLoop]: Abstraction has 606 states and 1208 transitions. [2020-10-11 15:43:35,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 15:43:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1208 transitions. [2020-10-11 15:43:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-11 15:43:35,660 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:43:35,660 INFO L421 BasicCegarLoop]: trace histogram [20, 20, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:43:35,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-11 15:43:35,874 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:43:35,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:43:35,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1130959339, now seen corresponding path program 20 times [2020-10-11 15:43:35,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:43:35,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129536084] [2020-10-11 15:43:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:43:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:43:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-11 15:43:36,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129536084] [2020-10-11 15:43:36,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379475306] [2020-10-11 15:43:36,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:43:36,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 15:43:36,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:43:36,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 53 conjunts are in the unsatisfiable core [2020-10-11 15:43:36,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:43:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 0 proven. 466 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:43:37,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:43:37,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 52] total 66 [2020-10-11 15:43:37,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873801435] [2020-10-11 15:43:37,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-11 15:43:37,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:43:37,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-11 15:43:37,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=881, Invalid=3409, Unknown=0, NotChecked=0, Total=4290 [2020-10-11 15:43:37,913 INFO L87 Difference]: Start difference. First operand 606 states and 1208 transitions. Second operand 66 states. [2020-10-11 15:44:35,703 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-11 15:45:05,578 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-11 15:45:19,161 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-11 15:45:50,219 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-11 15:45:58,797 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-11 15:46:28,047 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-10-11 15:48:12,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:48:12,362 INFO L93 Difference]: Finished difference Result 30049 states and 60080 transitions. [2020-10-11 15:48:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2384 states. [2020-10-11 15:48:12,365 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 59 [2020-10-11 15:48:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:48:12,480 INFO L225 Difference]: With dead ends: 30049 [2020-10-11 15:48:12,480 INFO L226 Difference]: Without dead ends: 30025 [2020-10-11 15:48:12,757 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2769 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 2393 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3796224 ImplicationChecksByTransitivity, 240.0s TimeCoverageRelationStatistics Valid=1405807, Invalid=4327823, Unknown=0, NotChecked=0, Total=5733630 [2020-10-11 15:48:12,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30025 states. [2020-10-11 15:48:12,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30025 to 1198. [2020-10-11 15:48:12,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2020-10-11 15:48:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 2520 transitions. [2020-10-11 15:48:12,958 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 2520 transitions. Word has length 59 [2020-10-11 15:48:12,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:48:12,958 INFO L481 AbstractCegarLoop]: Abstraction has 1198 states and 2520 transitions. [2020-10-11 15:48:12,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-11 15:48:12,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 2520 transitions. [2020-10-11 15:48:12,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-11 15:48:12,961 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:48:12,962 INFO L421 BasicCegarLoop]: trace histogram [20, 20, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:48:13,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-11 15:48:13,176 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:48:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:48:13,176 INFO L82 PathProgramCache]: Analyzing trace with hash -669634640, now seen corresponding path program 21 times [2020-10-11 15:48:13,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:48:13,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611582429] [2020-10-11 15:48:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:48:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:48:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-11 15:48:13,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611582429] [2020-10-11 15:48:13,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044967337] [2020-10-11 15:48:13,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:48:13,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-10-11 15:48:13,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:48:13,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-11 15:48:13,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:48:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-11 15:48:13,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:48:13,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-10-11 15:48:13,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379077220] [2020-10-11 15:48:13,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-11 15:48:13,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:48:13,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-11 15:48:13,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:48:13,731 INFO L87 Difference]: Start difference. First operand 1198 states and 2520 transitions. Second operand 16 states. [2020-10-11 15:48:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 15:48:13,877 INFO L93 Difference]: Finished difference Result 1382 states and 2810 transitions. [2020-10-11 15:48:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 15:48:13,879 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 60 [2020-10-11 15:48:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 15:48:13,883 INFO L225 Difference]: With dead ends: 1382 [2020-10-11 15:48:13,883 INFO L226 Difference]: Without dead ends: 1382 [2020-10-11 15:48:13,884 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-11 15:48:13,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2020-10-11 15:48:13,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1280. [2020-10-11 15:48:13,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-10-11 15:48:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 2684 transitions. [2020-10-11 15:48:13,907 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 2684 transitions. Word has length 60 [2020-10-11 15:48:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 15:48:13,908 INFO L481 AbstractCegarLoop]: Abstraction has 1280 states and 2684 transitions. [2020-10-11 15:48:13,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-11 15:48:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 2684 transitions. [2020-10-11 15:48:13,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-11 15:48:13,911 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 15:48:13,911 INFO L421 BasicCegarLoop]: trace histogram [20, 20, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 15:48:14,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:48:14,124 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 15:48:14,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 15:48:14,125 INFO L82 PathProgramCache]: Analyzing trace with hash 746529141, now seen corresponding path program 22 times [2020-10-11 15:48:14,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 15:48:14,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308429931] [2020-10-11 15:48:14,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 15:48:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 15:48:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 20 proven. 91 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2020-10-11 15:48:14,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308429931] [2020-10-11 15:48:14,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612022849] [2020-10-11 15:48:14,533 INFO L93 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 15:48:14,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-11 15:48:14,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 15:48:14,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 55 conjunts are in the unsatisfiable core [2020-10-11 15:48:14,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 15:48:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 15:48:19,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 15:48:19,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 54] total 70 [2020-10-11 15:48:19,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054797956] [2020-10-11 15:48:19,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-11 15:48:19,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 15:48:19,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-11 15:48:19,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=979, Invalid=3851, Unknown=0, NotChecked=0, Total=4830 [2020-10-11 15:48:19,120 INFO L87 Difference]: Start difference. First operand 1280 states and 2684 transitions. Second operand 70 states. Received shutdown request... [2020-10-11 15:56:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2473 states. [2020-10-11 15:56:02,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-11 15:56:02,190 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-11 15:56:02,194 WARN L235 ceAbstractionStarter]: Timeout [2020-10-11 15:56:02,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 03:56:02 BasicIcfg [2020-10-11 15:56:02,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 15:56:02,196 INFO L168 Benchmark]: Toolchain (without parser) took 804509.95 ms. Allocated memory was 249.6 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 202.6 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 14.2 GB. [2020-10-11 15:56:02,196 INFO L168 Benchmark]: CDTParser took 1.47 ms. Allocated memory is still 249.6 MB. Free memory was 225.1 MB in the beginning and 224.3 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. [2020-10-11 15:56:02,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1151.96 ms. Allocated memory was 249.6 MB in the beginning and 309.3 MB in the end (delta: 59.8 MB). Free memory was 202.6 MB in the beginning and 210.0 MB in the end (delta: -7.4 MB). Peak memory consumption was 62.6 MB. Max. memory is 14.2 GB. [2020-10-11 15:56:02,197 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.98 ms. Allocated memory is still 309.3 MB. Free memory was 210.0 MB in the beginning and 207.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 15:56:02,197 INFO L168 Benchmark]: Boogie Preprocessor took 83.81 ms. Allocated memory is still 309.3 MB. Free memory was 207.5 MB in the beginning and 205.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 15:56:02,198 INFO L168 Benchmark]: RCFGBuilder took 829.14 ms. Allocated memory is still 309.3 MB. Free memory was 205.8 MB in the beginning and 178.1 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 14.2 GB. [2020-10-11 15:56:02,198 INFO L168 Benchmark]: TraceAbstraction took 802313.48 ms. Allocated memory was 309.3 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 178.1 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.8 GB. Max. memory is 14.2 GB. [2020-10-11 15:56:02,200 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.47 ms. Allocated memory is still 249.6 MB. Free memory was 225.1 MB in the beginning and 224.3 MB in the end (delta: 839.2 kB). Peak memory consumption was 839.2 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1151.96 ms. Allocated memory was 249.6 MB in the beginning and 309.3 MB in the end (delta: 59.8 MB). Free memory was 202.6 MB in the beginning and 210.0 MB in the end (delta: -7.4 MB). Peak memory consumption was 62.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 124.98 ms. Allocated memory is still 309.3 MB. Free memory was 210.0 MB in the beginning and 207.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 83.81 ms. Allocated memory is still 309.3 MB. Free memory was 207.5 MB in the beginning and 205.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 829.14 ms. Allocated memory is still 309.3 MB. Free memory was 205.8 MB in the beginning and 178.1 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 802313.48 ms. Allocated memory was 309.3 MB in the beginning and 3.4 GB in the end (delta: 3.1 GB). Free memory was 178.1 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.8 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 432 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 9 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 12 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.7s, 82 PlacesBefore, 15 PlacesAfterwards, 85 TransitionsBefore, 13 TransitionsAfterwards, 640 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 83 TotalNumberOfCompositions, 580 MoverChecksTotal - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (1280states) and FLOYD_HOARE automaton (currently 2473 states, 70 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 2515 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 802.1s, OverallIterations: 24, TraceHistogramMax: 20, AutomataDifference: 776.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 324 SDtfs, 4075 SDslu, 3831 SDs, 0 SdLazy, 6559 SolverSat, 6390 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8288 GetRequests, 2224 SyntacticMatches, 0 SemanticMatches, 6063 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8067506 ImplicationChecksByTransitivity, 696.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1280occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 29098 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 1674 NumberOfCodeBlocks, 1582 NumberOfCodeBlocksAsserted, 131 NumberOfCheckSat, 1627 ConstructedInterpolants, 0 QuantifiedInterpolants, 159451 SizeOfPredicates, 101 NumberOfNonLiveVariables, 4363 ConjunctsInSsa, 310 ConjunctsInUnsatCore, 47 InterpolantComputations, 2 PerfectInterpolantSequences, 3562/8738 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown