/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 14:53:43,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 14:53:43,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 14:53:43,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 14:53:43,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 14:53:43,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 14:53:43,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 14:53:43,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 14:53:43,221 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 14:53:43,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 14:53:43,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 14:53:43,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 14:53:43,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 14:53:43,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 14:53:43,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 14:53:43,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 14:53:43,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 14:53:43,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 14:53:43,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 14:53:43,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 14:53:43,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 14:53:43,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 14:53:43,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 14:53:43,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 14:53:43,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-27 14:53:43,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-27 14:53:43,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-27 14:53:43,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-27 14:53:43,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-27 14:53:43,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-27 14:53:43,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 14:53:43,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 14:53:43,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 14:53:43,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 14:53:43,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 14:53:43,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 14:53:43,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 14:53:43,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 14:53:43,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 14:53:43,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 14:53:43,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 14:53:43,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2019-12-27 14:53:43,264 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 14:53:43,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 14:53:43,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 14:53:43,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 14:53:43,266 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 14:53:43,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 14:53:43,267 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 14:53:43,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 14:53:43,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 14:53:43,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 14:53:43,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 14:53:43,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 14:53:43,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 14:53:43,268 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 14:53:43,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 14:53:43,268 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 14:53:43,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 14:53:43,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 14:53:43,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 14:53:43,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 14:53:43,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 14:53:43,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 14:53:43,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 14:53:43,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 14:53:43,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 14:53:43,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 14:53:43,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 14:53:43,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-27 14:53:43,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 14:53:43,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 14:53:43,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 14:53:43,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 14:53:43,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 14:53:43,563 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 14:53:43,563 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 14:53:43,564 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2019-12-27 14:53:43,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18f648d1c/9c80c22059204101a4cd679384128515/FLAG639273153 [2019-12-27 14:53:44,317 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 14:53:44,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2019-12-27 14:53:44,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18f648d1c/9c80c22059204101a4cd679384128515/FLAG639273153 [2019-12-27 14:53:44,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18f648d1c/9c80c22059204101a4cd679384128515 [2019-12-27 14:53:44,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 14:53:44,520 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 14:53:44,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 14:53:44,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 14:53:44,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 14:53:44,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 02:53:44" (1/1) ... [2019-12-27 14:53:44,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ba58b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:44, skipping insertion in model container [2019-12-27 14:53:44,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 02:53:44" (1/1) ... [2019-12-27 14:53:44,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 14:53:44,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 14:53:45,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 14:53:45,292 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 14:53:45,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 14:53:45,650 INFO L208 MainTranslator]: Completed translation [2019-12-27 14:53:45,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45 WrapperNode [2019-12-27 14:53:45,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 14:53:45,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 14:53:45,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 14:53:45,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 14:53:45,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45" (1/1) ... [2019-12-27 14:53:45,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45" (1/1) ... [2019-12-27 14:53:45,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 14:53:45,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 14:53:45,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 14:53:45,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 14:53:45,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45" (1/1) ... [2019-12-27 14:53:45,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45" (1/1) ... [2019-12-27 14:53:45,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45" (1/1) ... [2019-12-27 14:53:45,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45" (1/1) ... [2019-12-27 14:53:45,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45" (1/1) ... [2019-12-27 14:53:45,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45" (1/1) ... [2019-12-27 14:53:45,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45" (1/1) ... [2019-12-27 14:53:45,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 14:53:45,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 14:53:45,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 14:53:45,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 14:53:45,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 14:53:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 14:53:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 14:53:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-27 14:53:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 14:53:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-12-27 14:53:45,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2019-12-27 14:53:45,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2019-12-27 14:53:45,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-27 14:53:45,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 14:53:45,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 14:53:45,959 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 14:53:46,647 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 14:53:46,648 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-27 14:53:46,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 02:53:46 BoogieIcfgContainer [2019-12-27 14:53:46,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 14:53:46,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 14:53:46,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 14:53:46,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 14:53:46,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 02:53:44" (1/3) ... [2019-12-27 14:53:46,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d935c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 02:53:46, skipping insertion in model container [2019-12-27 14:53:46,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 02:53:45" (2/3) ... [2019-12-27 14:53:46,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d935c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 02:53:46, skipping insertion in model container [2019-12-27 14:53:46,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 02:53:46" (3/3) ... [2019-12-27 14:53:46,659 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2019-12-27 14:53:46,670 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 14:53:46,670 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 14:53:46,678 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 14:53:46,679 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 14:53:46,712 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,712 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,713 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,713 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,713 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,714 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,714 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,714 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,715 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,715 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,715 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,716 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,717 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,717 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,717 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,717 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,718 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,718 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,718 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,718 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,719 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,719 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,719 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,725 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,726 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,726 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,726 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,726 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,727 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,727 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,727 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,727 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 14:53:46,748 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-27 14:53:46,769 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 14:53:46,769 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 14:53:46,769 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 14:53:46,770 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 14:53:46,770 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 14:53:46,770 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 14:53:46,770 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 14:53:46,770 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 14:53:46,782 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 81 transitions [2019-12-27 14:53:46,808 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 312 states. [2019-12-27 14:53:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2019-12-27 14:53:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-27 14:53:46,824 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:46,825 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:46,826 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:46,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:46,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1789221034, now seen corresponding path program 1 times [2019-12-27 14:53:46,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:46,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571182257] [2019-12-27 14:53:46,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:47,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571182257] [2019-12-27 14:53:47,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 14:53:47,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 14:53:47,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791248391] [2019-12-27 14:53:47,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-27 14:53:47,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:47,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-27 14:53:47,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 14:53:47,092 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 2 states. [2019-12-27 14:53:47,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:47,121 INFO L93 Difference]: Finished difference Result 305 states and 575 transitions. [2019-12-27 14:53:47,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-27 14:53:47,123 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-12-27 14:53:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:47,140 INFO L225 Difference]: With dead ends: 305 [2019-12-27 14:53:47,140 INFO L226 Difference]: Without dead ends: 268 [2019-12-27 14:53:47,142 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-27 14:53:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2019-12-27 14:53:47,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2019-12-27 14:53:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-12-27 14:53:47,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 502 transitions. [2019-12-27 14:53:47,216 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 502 transitions. Word has length 46 [2019-12-27 14:53:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:47,217 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 502 transitions. [2019-12-27 14:53:47,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-27 14:53:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 502 transitions. [2019-12-27 14:53:47,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-27 14:53:47,226 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:47,226 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:47,227 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:47,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:47,228 INFO L82 PathProgramCache]: Analyzing trace with hash 73657564, now seen corresponding path program 1 times [2019-12-27 14:53:47,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:47,228 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113331194] [2019-12-27 14:53:47,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:47,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113331194] [2019-12-27 14:53:47,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 14:53:47,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 14:53:47,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730192677] [2019-12-27 14:53:47,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 14:53:47,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:47,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 14:53:47,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 14:53:47,385 INFO L87 Difference]: Start difference. First operand 268 states and 502 transitions. Second operand 3 states. [2019-12-27 14:53:47,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:47,435 INFO L93 Difference]: Finished difference Result 398 states and 762 transitions. [2019-12-27 14:53:47,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 14:53:47,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-12-27 14:53:47,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:47,440 INFO L225 Difference]: With dead ends: 398 [2019-12-27 14:53:47,441 INFO L226 Difference]: Without dead ends: 398 [2019-12-27 14:53:47,442 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 14:53:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2019-12-27 14:53:47,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 281. [2019-12-27 14:53:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2019-12-27 14:53:47,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 528 transitions. [2019-12-27 14:53:47,478 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 528 transitions. Word has length 46 [2019-12-27 14:53:47,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:47,479 INFO L462 AbstractCegarLoop]: Abstraction has 281 states and 528 transitions. [2019-12-27 14:53:47,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 14:53:47,479 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 528 transitions. [2019-12-27 14:53:47,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-12-27 14:53:47,485 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:47,485 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:47,486 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:47,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:47,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1619336906, now seen corresponding path program 1 times [2019-12-27 14:53:47,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:47,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958764255] [2019-12-27 14:53:47,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:47,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958764255] [2019-12-27 14:53:47,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 14:53:47,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 14:53:47,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742315178] [2019-12-27 14:53:47,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 14:53:47,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:47,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 14:53:47,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 14:53:47,583 INFO L87 Difference]: Start difference. First operand 281 states and 528 transitions. Second operand 3 states. [2019-12-27 14:53:47,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:47,611 INFO L93 Difference]: Finished difference Result 414 states and 794 transitions. [2019-12-27 14:53:47,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 14:53:47,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-12-27 14:53:47,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:47,615 INFO L225 Difference]: With dead ends: 414 [2019-12-27 14:53:47,615 INFO L226 Difference]: Without dead ends: 414 [2019-12-27 14:53:47,615 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 14:53:47,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-12-27 14:53:47,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 300. [2019-12-27 14:53:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-12-27 14:53:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 566 transitions. [2019-12-27 14:53:47,633 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 566 transitions. Word has length 57 [2019-12-27 14:53:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:47,634 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 566 transitions. [2019-12-27 14:53:47,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 14:53:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 566 transitions. [2019-12-27 14:53:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-12-27 14:53:47,636 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:47,636 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:47,636 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:47,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:47,637 INFO L82 PathProgramCache]: Analyzing trace with hash 972138175, now seen corresponding path program 1 times [2019-12-27 14:53:47,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:47,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217319170] [2019-12-27 14:53:47,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:47,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:47,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217319170] [2019-12-27 14:53:47,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269113170] [2019-12-27 14:53:47,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:47,932 INFO L264 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-27 14:53:47,944 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:53:48,009 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-12-27 14:53:48,009 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-27 14:53:48,017 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-27 14:53:48,018 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-27 14:53:48,018 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-12-27 14:53:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:48,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-27 14:53:48,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-12-27 14:53:48,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157705425] [2019-12-27 14:53:48,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 14:53:48,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:48,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 14:53:48,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-27 14:53:48,055 INFO L87 Difference]: Start difference. First operand 300 states and 566 transitions. Second operand 3 states. [2019-12-27 14:53:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:48,123 INFO L93 Difference]: Finished difference Result 282 states and 521 transitions. [2019-12-27 14:53:48,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 14:53:48,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-12-27 14:53:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:48,130 INFO L225 Difference]: With dead ends: 282 [2019-12-27 14:53:48,130 INFO L226 Difference]: Without dead ends: 282 [2019-12-27 14:53:48,131 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-27 14:53:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2019-12-27 14:53:48,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2019-12-27 14:53:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2019-12-27 14:53:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 521 transitions. [2019-12-27 14:53:48,176 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 521 transitions. Word has length 65 [2019-12-27 14:53:48,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:48,177 INFO L462 AbstractCegarLoop]: Abstraction has 282 states and 521 transitions. [2019-12-27 14:53:48,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 14:53:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 521 transitions. [2019-12-27 14:53:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-12-27 14:53:48,180 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:48,183 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:48,388 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:48,389 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:48,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:48,390 INFO L82 PathProgramCache]: Analyzing trace with hash -614274507, now seen corresponding path program 2 times [2019-12-27 14:53:48,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:48,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019261817] [2019-12-27 14:53:48,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:48,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019261817] [2019-12-27 14:53:48,529 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671673002] [2019-12-27 14:53:48,530 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:48,669 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-12-27 14:53:48,670 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:53:48,671 INFO L264 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-27 14:53:48,674 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:53:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-27 14:53:48,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:53:48,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-12-27 14:53:48,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716425974] [2019-12-27 14:53:48,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-27 14:53:48,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:48,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-27 14:53:48,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-12-27 14:53:48,766 INFO L87 Difference]: Start difference. First operand 282 states and 521 transitions. Second operand 8 states. [2019-12-27 14:53:49,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:49,246 INFO L93 Difference]: Finished difference Result 964 states and 1813 transitions. [2019-12-27 14:53:49,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-12-27 14:53:49,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2019-12-27 14:53:49,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:49,252 INFO L225 Difference]: With dead ends: 964 [2019-12-27 14:53:49,252 INFO L226 Difference]: Without dead ends: 964 [2019-12-27 14:53:49,253 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2019-12-27 14:53:49,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2019-12-27 14:53:49,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 622. [2019-12-27 14:53:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-12-27 14:53:49,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1174 transitions. [2019-12-27 14:53:49,276 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1174 transitions. Word has length 65 [2019-12-27 14:53:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:49,276 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 1174 transitions. [2019-12-27 14:53:49,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-27 14:53:49,276 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1174 transitions. [2019-12-27 14:53:49,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-12-27 14:53:49,279 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:49,279 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:49,482 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:49,483 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:49,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:49,484 INFO L82 PathProgramCache]: Analyzing trace with hash -2086131724, now seen corresponding path program 3 times [2019-12-27 14:53:49,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:49,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082149056] [2019-12-27 14:53:49,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:49,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082149056] [2019-12-27 14:53:49,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480028356] [2019-12-27 14:53:49,761 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:49,866 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-27 14:53:49,866 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:53:49,867 INFO L264 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 14:53:49,883 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:53:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-27 14:53:50,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:53:50,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2019-12-27 14:53:50,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513300173] [2019-12-27 14:53:50,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-27 14:53:50,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:50,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-27 14:53:50,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2019-12-27 14:53:50,009 INFO L87 Difference]: Start difference. First operand 622 states and 1174 transitions. Second operand 18 states. [2019-12-27 14:53:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:51,659 INFO L93 Difference]: Finished difference Result 1509 states and 2844 transitions. [2019-12-27 14:53:51,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-12-27 14:53:51,660 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 84 [2019-12-27 14:53:51,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:51,668 INFO L225 Difference]: With dead ends: 1509 [2019-12-27 14:53:51,668 INFO L226 Difference]: Without dead ends: 1509 [2019-12-27 14:53:51,671 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1102, Invalid=4010, Unknown=0, NotChecked=0, Total=5112 [2019-12-27 14:53:51,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2019-12-27 14:53:51,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1048. [2019-12-27 14:53:51,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2019-12-27 14:53:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1985 transitions. [2019-12-27 14:53:51,705 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1985 transitions. Word has length 84 [2019-12-27 14:53:51,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:51,705 INFO L462 AbstractCegarLoop]: Abstraction has 1048 states and 1985 transitions. [2019-12-27 14:53:51,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-27 14:53:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1985 transitions. [2019-12-27 14:53:51,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-12-27 14:53:51,710 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:51,710 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:51,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:51,914 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:51,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:51,915 INFO L82 PathProgramCache]: Analyzing trace with hash 53287651, now seen corresponding path program 4 times [2019-12-27 14:53:51,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:51,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759343179] [2019-12-27 14:53:51,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:52,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759343179] [2019-12-27 14:53:52,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913340649] [2019-12-27 14:53:52,215 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:52,306 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 14:53:52,306 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:53:52,308 INFO L264 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-27 14:53:52,311 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:53:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-27 14:53:52,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:53:52,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2019-12-27 14:53:52,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902688518] [2019-12-27 14:53:52,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-12-27 14:53:52,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:52,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-12-27 14:53:52,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2019-12-27 14:53:52,418 INFO L87 Difference]: Start difference. First operand 1048 states and 1985 transitions. Second operand 20 states. [2019-12-27 14:53:54,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:54,409 INFO L93 Difference]: Finished difference Result 2165 states and 4073 transitions. [2019-12-27 14:53:54,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-12-27 14:53:54,410 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 92 [2019-12-27 14:53:54,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:54,421 INFO L225 Difference]: With dead ends: 2165 [2019-12-27 14:53:54,421 INFO L226 Difference]: Without dead ends: 2165 [2019-12-27 14:53:54,424 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2555 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1481, Invalid=6175, Unknown=0, NotChecked=0, Total=7656 [2019-12-27 14:53:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2019-12-27 14:53:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1102. [2019-12-27 14:53:54,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2019-12-27 14:53:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 2089 transitions. [2019-12-27 14:53:54,460 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 2089 transitions. Word has length 92 [2019-12-27 14:53:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:54,461 INFO L462 AbstractCegarLoop]: Abstraction has 1102 states and 2089 transitions. [2019-12-27 14:53:54,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-12-27 14:53:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 2089 transitions. [2019-12-27 14:53:54,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-12-27 14:53:54,464 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:54,464 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:54,668 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:54,673 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:54,674 INFO L82 PathProgramCache]: Analyzing trace with hash 85375957, now seen corresponding path program 5 times [2019-12-27 14:53:54,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:54,674 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90563581] [2019-12-27 14:53:54,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:54,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90563581] [2019-12-27 14:53:54,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930494618] [2019-12-27 14:53:54,936 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:55,033 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-12-27 14:53:55,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:53:55,035 INFO L264 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 14:53:55,045 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:53:55,209 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:55,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:53:55,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2019-12-27 14:53:55,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826308408] [2019-12-27 14:53:55,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-27 14:53:55,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:55,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-27 14:53:55,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2019-12-27 14:53:55,214 INFO L87 Difference]: Start difference. First operand 1102 states and 2089 transitions. Second operand 24 states. [2019-12-27 14:53:58,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:53:58,419 INFO L93 Difference]: Finished difference Result 3101 states and 5835 transitions. [2019-12-27 14:53:58,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2019-12-27 14:53:58,420 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 103 [2019-12-27 14:53:58,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:53:58,434 INFO L225 Difference]: With dead ends: 3101 [2019-12-27 14:53:58,434 INFO L226 Difference]: Without dead ends: 3101 [2019-12-27 14:53:58,439 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5887 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3517, Invalid=11983, Unknown=0, NotChecked=0, Total=15500 [2019-12-27 14:53:58,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2019-12-27 14:53:58,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 1378. [2019-12-27 14:53:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1378 states. [2019-12-27 14:53:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 2614 transitions. [2019-12-27 14:53:58,490 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 2614 transitions. Word has length 103 [2019-12-27 14:53:58,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:53:58,490 INFO L462 AbstractCegarLoop]: Abstraction has 1378 states and 2614 transitions. [2019-12-27 14:53:58,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-27 14:53:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 2614 transitions. [2019-12-27 14:53:58,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-12-27 14:53:58,494 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:53:58,495 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:53:58,722 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:58,723 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:53:58,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:53:58,723 INFO L82 PathProgramCache]: Analyzing trace with hash -164242425, now seen corresponding path program 6 times [2019-12-27 14:53:58,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:53:58,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846194409] [2019-12-27 14:53:58,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:53:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:53:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:59,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846194409] [2019-12-27 14:53:59,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260363500] [2019-12-27 14:53:59,027 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:53:59,127 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-27 14:53:59,127 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:53:59,129 INFO L264 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-27 14:53:59,131 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:53:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:53:59,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:53:59,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2019-12-27 14:53:59,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195902460] [2019-12-27 14:53:59,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-27 14:53:59,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:53:59,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-27 14:53:59,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2019-12-27 14:53:59,289 INFO L87 Difference]: Start difference. First operand 1378 states and 2614 transitions. Second operand 28 states. [2019-12-27 14:54:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:54:05,274 INFO L93 Difference]: Finished difference Result 4252 states and 7994 transitions. [2019-12-27 14:54:05,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2019-12-27 14:54:05,275 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 114 [2019-12-27 14:54:05,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:54:05,333 INFO L225 Difference]: With dead ends: 4252 [2019-12-27 14:54:05,333 INFO L226 Difference]: Without dead ends: 4252 [2019-12-27 14:54:05,343 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17686 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8702, Invalid=32710, Unknown=0, NotChecked=0, Total=41412 [2019-12-27 14:54:05,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2019-12-27 14:54:05,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 2480. [2019-12-27 14:54:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2480 states. [2019-12-27 14:54:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 4701 transitions. [2019-12-27 14:54:05,421 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 4701 transitions. Word has length 114 [2019-12-27 14:54:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:54:05,422 INFO L462 AbstractCegarLoop]: Abstraction has 2480 states and 4701 transitions. [2019-12-27 14:54:05,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-27 14:54:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 4701 transitions. [2019-12-27 14:54:05,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-12-27 14:54:05,428 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:54:05,429 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:54:05,635 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:05,635 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:54:05,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:54:05,635 INFO L82 PathProgramCache]: Analyzing trace with hash -567253697, now seen corresponding path program 7 times [2019-12-27 14:54:05,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:54:05,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412892562] [2019-12-27 14:54:05,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:54:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:54:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:54:05,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412892562] [2019-12-27 14:54:05,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547837849] [2019-12-27 14:54:05,915 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:54:06,012 INFO L264 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-27 14:54:06,014 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:54:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 41 proven. 97 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-27 14:54:06,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:54:06,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2019-12-27 14:54:06,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838562539] [2019-12-27 14:54:06,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-27 14:54:06,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:54:06,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-27 14:54:06,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2019-12-27 14:54:06,192 INFO L87 Difference]: Start difference. First operand 2480 states and 4701 transitions. Second operand 28 states. [2019-12-27 14:54:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:54:12,764 INFO L93 Difference]: Finished difference Result 7332 states and 13771 transitions. [2019-12-27 14:54:12,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2019-12-27 14:54:12,764 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 125 [2019-12-27 14:54:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:54:12,789 INFO L225 Difference]: With dead ends: 7332 [2019-12-27 14:54:12,789 INFO L226 Difference]: Without dead ends: 7332 [2019-12-27 14:54:12,793 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23454 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=9542, Invalid=44980, Unknown=0, NotChecked=0, Total=54522 [2019-12-27 14:54:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2019-12-27 14:54:12,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 2212. [2019-12-27 14:54:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2212 states. [2019-12-27 14:54:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 4192 transitions. [2019-12-27 14:54:12,867 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 4192 transitions. Word has length 125 [2019-12-27 14:54:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:54:12,867 INFO L462 AbstractCegarLoop]: Abstraction has 2212 states and 4192 transitions. [2019-12-27 14:54:12,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-27 14:54:12,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 4192 transitions. [2019-12-27 14:54:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-12-27 14:54:12,874 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:54:12,874 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:54:13,078 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:13,079 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:54:13,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:54:13,079 INFO L82 PathProgramCache]: Analyzing trace with hash -826724312, now seen corresponding path program 8 times [2019-12-27 14:54:13,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:54:13,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165458133] [2019-12-27 14:54:13,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:54:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:54:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:54:13,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165458133] [2019-12-27 14:54:13,472 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152007813] [2019-12-27 14:54:13,472 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:13,556 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 14:54:13,556 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:54:13,557 INFO L264 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-27 14:54:13,559 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:54:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 33 proven. 130 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-27 14:54:13,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:54:13,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 32 [2019-12-27 14:54:13,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97066489] [2019-12-27 14:54:13,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-12-27 14:54:13,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:54:13,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-12-27 14:54:13,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2019-12-27 14:54:13,711 INFO L87 Difference]: Start difference. First operand 2212 states and 4192 transitions. Second operand 32 states. [2019-12-27 14:54:22,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:54:22,973 INFO L93 Difference]: Finished difference Result 8044 states and 15141 transitions. [2019-12-27 14:54:22,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2019-12-27 14:54:22,973 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 133 [2019-12-27 14:54:22,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:54:22,998 INFO L225 Difference]: With dead ends: 8044 [2019-12-27 14:54:22,998 INFO L226 Difference]: Without dead ends: 8044 [2019-12-27 14:54:23,004 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37530 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=15056, Invalid=68754, Unknown=0, NotChecked=0, Total=83810 [2019-12-27 14:54:23,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8044 states. [2019-12-27 14:54:23,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8044 to 2626. [2019-12-27 14:54:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2626 states. [2019-12-27 14:54:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 4975 transitions. [2019-12-27 14:54:23,125 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 4975 transitions. Word has length 133 [2019-12-27 14:54:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:54:23,126 INFO L462 AbstractCegarLoop]: Abstraction has 2626 states and 4975 transitions. [2019-12-27 14:54:23,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-12-27 14:54:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 4975 transitions. [2019-12-27 14:54:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-12-27 14:54:23,133 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:54:23,133 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:54:23,336 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:23,337 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:54:23,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:54:23,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1157606027, now seen corresponding path program 9 times [2019-12-27 14:54:23,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:54:23,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532114839] [2019-12-27 14:54:23,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:54:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:54:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:54:23,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532114839] [2019-12-27 14:54:23,702 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795867279] [2019-12-27 14:54:23,702 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:23,834 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-12-27 14:54:23,834 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:54:23,835 INFO L264 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-27 14:54:23,837 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:54:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 17 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:54:24,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:54:24,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2019-12-27 14:54:24,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294477312] [2019-12-27 14:54:24,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-12-27 14:54:24,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:54:24,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-12-27 14:54:24,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1076, Unknown=0, NotChecked=0, Total=1260 [2019-12-27 14:54:24,040 INFO L87 Difference]: Start difference. First operand 2626 states and 4975 transitions. Second operand 36 states. [2019-12-27 14:54:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:54:38,152 INFO L93 Difference]: Finished difference Result 9691 states and 18241 transitions. [2019-12-27 14:54:38,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 333 states. [2019-12-27 14:54:38,152 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 141 [2019-12-27 14:54:38,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:54:38,169 INFO L225 Difference]: With dead ends: 9691 [2019-12-27 14:54:38,169 INFO L226 Difference]: Without dead ends: 9691 [2019-12-27 14:54:38,173 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58961 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=24702, Invalid=100968, Unknown=0, NotChecked=0, Total=125670 [2019-12-27 14:54:38,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9691 states. [2019-12-27 14:54:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9691 to 3042. [2019-12-27 14:54:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3042 states. [2019-12-27 14:54:38,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 5762 transitions. [2019-12-27 14:54:38,265 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 5762 transitions. Word has length 141 [2019-12-27 14:54:38,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:54:38,265 INFO L462 AbstractCegarLoop]: Abstraction has 3042 states and 5762 transitions. [2019-12-27 14:54:38,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-12-27 14:54:38,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 5762 transitions. [2019-12-27 14:54:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-12-27 14:54:38,275 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:54:38,275 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:54:38,487 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:38,487 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:54:38,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:54:38,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1618346393, now seen corresponding path program 10 times [2019-12-27 14:54:38,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:54:38,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713726253] [2019-12-27 14:54:38,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:54:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:54:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:54:38,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713726253] [2019-12-27 14:54:38,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063600791] [2019-12-27 14:54:38,939 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:39,048 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-27 14:54:39,048 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:54:39,050 INFO L264 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-27 14:54:39,052 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:54:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 41 proven. 211 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-27 14:54:39,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:54:39,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 38 [2019-12-27 14:54:39,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163244308] [2019-12-27 14:54:39,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-12-27 14:54:39,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:54:39,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-12-27 14:54:39,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1208, Unknown=0, NotChecked=0, Total=1406 [2019-12-27 14:54:39,282 INFO L87 Difference]: Start difference. First operand 3042 states and 5762 transitions. Second operand 38 states. [2019-12-27 14:54:54,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:54:54,740 INFO L93 Difference]: Finished difference Result 12862 states and 24213 transitions. [2019-12-27 14:54:54,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 412 states. [2019-12-27 14:54:54,741 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 152 [2019-12-27 14:54:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:54:54,762 INFO L225 Difference]: With dead ends: 12862 [2019-12-27 14:54:54,763 INFO L226 Difference]: Without dead ends: 12862 [2019-12-27 14:54:54,770 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 432 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89529 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=32216, Invalid=155706, Unknown=0, NotChecked=0, Total=187922 [2019-12-27 14:54:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12862 states. [2019-12-27 14:54:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12862 to 3588. [2019-12-27 14:54:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3588 states. [2019-12-27 14:54:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 6791 transitions. [2019-12-27 14:54:54,878 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 6791 transitions. Word has length 152 [2019-12-27 14:54:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:54:54,879 INFO L462 AbstractCegarLoop]: Abstraction has 3588 states and 6791 transitions. [2019-12-27 14:54:54,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-12-27 14:54:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 6791 transitions. [2019-12-27 14:54:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-12-27 14:54:54,887 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:54:54,887 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:54:55,091 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:55,092 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:54:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:54:55,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1241150644, now seen corresponding path program 11 times [2019-12-27 14:54:55,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:54:55,092 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757789985] [2019-12-27 14:54:55,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:54:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:54:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:54:55,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757789985] [2019-12-27 14:54:55,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021074470] [2019-12-27 14:54:55,490 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:54:55,585 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-12-27 14:54:55,586 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:54:55,587 INFO L264 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-27 14:54:55,589 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:54:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 21 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:54:55,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:54:55,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 15] total 42 [2019-12-27 14:54:55,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466638157] [2019-12-27 14:54:55,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-12-27 14:54:55,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:54:55,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-12-27 14:54:55,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1480, Unknown=0, NotChecked=0, Total=1722 [2019-12-27 14:54:55,871 INFO L87 Difference]: Start difference. First operand 3588 states and 6791 transitions. Second operand 42 states. [2019-12-27 14:55:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:55:18,935 INFO L93 Difference]: Finished difference Result 15156 states and 28525 transitions. [2019-12-27 14:55:18,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 496 states. [2019-12-27 14:55:18,935 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 160 [2019-12-27 14:55:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:55:18,958 INFO L225 Difference]: With dead ends: 15156 [2019-12-27 14:55:18,958 INFO L226 Difference]: Without dead ends: 15156 [2019-12-27 14:55:18,970 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 519 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133447 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=49969, Invalid=220951, Unknown=0, NotChecked=0, Total=270920 [2019-12-27 14:55:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15156 states. [2019-12-27 14:55:19,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15156 to 4074. [2019-12-27 14:55:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4074 states. [2019-12-27 14:55:19,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4074 states to 4074 states and 7709 transitions. [2019-12-27 14:55:19,079 INFO L78 Accepts]: Start accepts. Automaton has 4074 states and 7709 transitions. Word has length 160 [2019-12-27 14:55:19,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:55:19,080 INFO L462 AbstractCegarLoop]: Abstraction has 4074 states and 7709 transitions. [2019-12-27 14:55:19,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-12-27 14:55:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4074 states and 7709 transitions. [2019-12-27 14:55:19,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-12-27 14:55:19,088 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:55:19,088 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:55:19,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:55:19,292 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:55:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:55:19,293 INFO L82 PathProgramCache]: Analyzing trace with hash 940454344, now seen corresponding path program 12 times [2019-12-27 14:55:19,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:55:19,293 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697122342] [2019-12-27 14:55:19,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:55:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:55:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:55:19,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697122342] [2019-12-27 14:55:19,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543541173] [2019-12-27 14:55:19,718 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:55:19,827 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-12-27 14:55:19,827 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:55:19,828 INFO L264 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-27 14:55:19,831 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:55:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 49 proven. 311 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-27 14:55:20,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:55:20,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 44 [2019-12-27 14:55:20,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307771361] [2019-12-27 14:55:20,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-12-27 14:55:20,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:55:20,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-12-27 14:55:20,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1634, Unknown=0, NotChecked=0, Total=1892 [2019-12-27 14:55:20,196 INFO L87 Difference]: Start difference. First operand 4074 states and 7709 transitions. Second operand 44 states. [2019-12-27 14:55:44,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:55:44,613 INFO L93 Difference]: Finished difference Result 19308 states and 36339 transitions. [2019-12-27 14:55:44,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 575 states. [2019-12-27 14:55:44,613 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 171 [2019-12-27 14:55:44,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:55:44,627 INFO L225 Difference]: With dead ends: 19308 [2019-12-27 14:55:44,627 INFO L226 Difference]: Without dead ends: 19308 [2019-12-27 14:55:44,639 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 599 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179414 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=60403, Invalid=300197, Unknown=0, NotChecked=0, Total=360600 [2019-12-27 14:55:44,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19308 states. [2019-12-27 14:55:44,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19308 to 4628. [2019-12-27 14:55:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4628 states. [2019-12-27 14:55:44,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4628 states to 4628 states and 8754 transitions. [2019-12-27 14:55:44,776 INFO L78 Accepts]: Start accepts. Automaton has 4628 states and 8754 transitions. Word has length 171 [2019-12-27 14:55:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:55:44,777 INFO L462 AbstractCegarLoop]: Abstraction has 4628 states and 8754 transitions. [2019-12-27 14:55:44,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-12-27 14:55:44,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4628 states and 8754 transitions. [2019-12-27 14:55:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-12-27 14:55:44,788 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:55:44,788 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:55:44,991 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:55:44,992 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:55:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:55:44,992 INFO L82 PathProgramCache]: Analyzing trace with hash -292964587, now seen corresponding path program 13 times [2019-12-27 14:55:44,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:55:44,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594154741] [2019-12-27 14:55:44,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:55:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:55:45,487 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 413 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:55:45,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594154741] [2019-12-27 14:55:45,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799296503] [2019-12-27 14:55:45,487 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:55:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:55:45,596 INFO L264 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-27 14:55:45,598 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:55:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 25 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:55:45,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:55:45,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 17] total 48 [2019-12-27 14:55:45,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930872817] [2019-12-27 14:55:45,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-12-27 14:55:45,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:55:45,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-12-27 14:55:45,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1948, Unknown=0, NotChecked=0, Total=2256 [2019-12-27 14:55:45,953 INFO L87 Difference]: Start difference. First operand 4628 states and 8754 transitions. Second operand 48 states. [2019-12-27 14:56:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:56:22,167 INFO L93 Difference]: Finished difference Result 22144 states and 41684 transitions. [2019-12-27 14:56:22,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 666 states. [2019-12-27 14:56:22,167 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 179 [2019-12-27 14:56:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:56:22,182 INFO L225 Difference]: With dead ends: 22144 [2019-12-27 14:56:22,182 INFO L226 Difference]: Without dead ends: 22144 [2019-12-27 14:56:22,197 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 694 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246596 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=88108, Invalid=395612, Unknown=0, NotChecked=0, Total=483720 [2019-12-27 14:56:22,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22144 states. [2019-12-27 14:56:22,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22144 to 5184. [2019-12-27 14:56:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5184 states. [2019-12-27 14:56:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 9803 transitions. [2019-12-27 14:56:22,345 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 9803 transitions. Word has length 179 [2019-12-27 14:56:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:56:22,346 INFO L462 AbstractCegarLoop]: Abstraction has 5184 states and 9803 transitions. [2019-12-27 14:56:22,346 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-12-27 14:56:22,346 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 9803 transitions. [2019-12-27 14:56:22,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-12-27 14:56:22,355 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:56:22,355 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:56:22,558 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:56:22,559 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:56:22,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:56:22,559 INFO L82 PathProgramCache]: Analyzing trace with hash 722557127, now seen corresponding path program 14 times [2019-12-27 14:56:22,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:56:22,559 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521160087] [2019-12-27 14:56:22,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:56:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:56:22,779 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2019-12-27 14:56:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:56:23,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521160087] [2019-12-27 14:56:23,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929469591] [2019-12-27 14:56:23,217 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:56:23,314 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-27 14:56:23,314 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:56:23,315 INFO L264 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-27 14:56:23,317 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:56:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 57 proven. 430 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-27 14:56:23,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:56:23,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 17] total 50 [2019-12-27 14:56:23,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981129629] [2019-12-27 14:56:23,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-12-27 14:56:23,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:56:23,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-12-27 14:56:23,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2124, Unknown=0, NotChecked=0, Total=2450 [2019-12-27 14:56:23,713 INFO L87 Difference]: Start difference. First operand 5184 states and 9803 transitions. Second operand 50 states. [2019-12-27 14:57:00,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 14:57:00,321 INFO L93 Difference]: Finished difference Result 27657 states and 52055 transitions. [2019-12-27 14:57:00,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 769 states. [2019-12-27 14:57:00,322 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 190 [2019-12-27 14:57:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 14:57:00,341 INFO L225 Difference]: With dead ends: 27657 [2019-12-27 14:57:00,341 INFO L226 Difference]: Without dead ends: 27657 [2019-12-27 14:57:00,360 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 797 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327355 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=104408, Invalid=533194, Unknown=0, NotChecked=0, Total=637602 [2019-12-27 14:57:00,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27657 states. [2019-12-27 14:57:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27657 to 5870. [2019-12-27 14:57:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5870 states. [2019-12-27 14:57:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5870 states to 5870 states and 11094 transitions. [2019-12-27 14:57:00,542 INFO L78 Accepts]: Start accepts. Automaton has 5870 states and 11094 transitions. Word has length 190 [2019-12-27 14:57:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 14:57:00,542 INFO L462 AbstractCegarLoop]: Abstraction has 5870 states and 11094 transitions. [2019-12-27 14:57:00,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-12-27 14:57:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 5870 states and 11094 transitions. [2019-12-27 14:57:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-12-27 14:57:00,551 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 14:57:00,551 INFO L411 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 14:57:00,756 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:57:00,756 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 14:57:00,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 14:57:00,757 INFO L82 PathProgramCache]: Analyzing trace with hash 120680212, now seen corresponding path program 15 times [2019-12-27 14:57:00,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 14:57:00,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732752314] [2019-12-27 14:57:00,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 14:57:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 14:57:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:57:01,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732752314] [2019-12-27 14:57:01,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268983352] [2019-12-27 14:57:01,551 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:57:01,843 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-12-27 14:57:01,844 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-27 14:57:01,846 INFO L264 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-27 14:57:01,850 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-27 14:57:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 29 proven. 519 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 14:57:02,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-27 14:57:02,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 19] total 54 [2019-12-27 14:57:02,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911296667] [2019-12-27 14:57:02,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 54 states [2019-12-27 14:57:02,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 14:57:02,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2019-12-27 14:57:02,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2480, Unknown=0, NotChecked=0, Total=2862 [2019-12-27 14:57:02,406 INFO L87 Difference]: Start difference. First operand 5870 states and 11094 transitions. Second operand 54 states. [2019-12-27 14:57:36,700 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 10 Received shutdown request... [2019-12-27 14:57:47,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 755 states. [2019-12-27 14:57:48,185 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-27 14:57:48,186 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-27 14:57:48,192 WARN L227 ceAbstractionStarter]: Timeout [2019-12-27 14:57:48,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 02:57:48 BasicIcfg [2019-12-27 14:57:48,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 14:57:48,194 INFO L168 Benchmark]: Toolchain (without parser) took 243673.87 ms. Allocated memory was 138.4 MB in the beginning and 1.6 GB in the end (delta: 1.5 GB). Free memory was 100.9 MB in the beginning and 602.5 MB in the end (delta: -501.6 MB). Peak memory consumption was 994.7 MB. Max. memory is 7.1 GB. [2019-12-27 14:57:48,194 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-12-27 14:57:48,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1130.09 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 106.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2019-12-27 14:57:48,195 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.95 ms. Allocated memory is still 202.9 MB. Free memory was 106.8 MB in the beginning and 104.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-12-27 14:57:48,196 INFO L168 Benchmark]: Boogie Preprocessor took 83.06 ms. Allocated memory is still 202.9 MB. Free memory was 104.0 MB in the beginning and 102.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-27 14:57:48,196 INFO L168 Benchmark]: RCFGBuilder took 796.70 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 102.7 MB in the beginning and 195.9 MB in the end (delta: -93.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2019-12-27 14:57:48,197 INFO L168 Benchmark]: TraceAbstraction took 241541.87 ms. Allocated memory was 235.9 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 194.4 MB in the beginning and 602.5 MB in the end (delta: -408.1 MB). Peak memory consumption was 990.7 MB. Max. memory is 7.1 GB. [2019-12-27 14:57:48,200 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1130.09 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 106.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 116.95 ms. Allocated memory is still 202.9 MB. Free memory was 106.8 MB in the beginning and 104.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.06 ms. Allocated memory is still 202.9 MB. Free memory was 104.0 MB in the beginning and 102.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 796.70 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 102.7 MB in the beginning and 195.9 MB in the end (delta: -93.2 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241541.87 ms. Allocated memory was 235.9 MB in the beginning and 1.6 GB in the end (delta: 1.4 GB). Free memory was 194.4 MB in the beginning and 602.5 MB in the end (delta: -408.1 MB). Peak memory consumption was 990.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (5870states) and FLOYD_HOARE automaton (currently 755 states, 54 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 796 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 75 locations, 1 error locations. Result: TIMEOUT, OverallTime: 241.4s, OverallIterations: 18, TraceHistogramMax: 8, AutomataDifference: 225.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2001 SDtfs, 40830 SDslu, 37157 SDs, 0 SdLazy, 15290 SolverSat, 3942 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7293 GetRequests, 2070 SyntacticMatches, 1 SemanticMatches, 5221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452830 ImplicationChecksByTransitivity, 208.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5870occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 96562 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 4093 NumberOfCodeBlocks, 4055 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 4060 ConstructedInterpolants, 0 QuantifiedInterpolants, 1834038 SizeOfPredicates, 142 NumberOfNonLiveVariables, 4181 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 33 InterpolantComputations, 4 PerfectInterpolantSequences, 373/6211 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown