java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/bist_cell.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:50:53,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:50:53,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:50:53,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:50:53,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:50:53,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:50:53,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:50:53,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:50:53,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:50:53,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:50:53,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:50:53,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:50:53,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:50:53,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:50:53,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:50:53,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:50:53,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:50:53,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:50:53,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:50:53,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:50:53,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:50:53,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:50:53,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:50:53,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:50:53,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:50:53,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:50:53,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:50:53,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:50:53,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:50:53,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:50:53,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:50:53,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:50:53,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:50:53,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:50:53,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:50:53,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:50:53,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:50:53,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:50:53,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:50:53,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:50:53,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:50:53,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:50:53,111 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:50:53,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:50:53,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:50:53,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:50:53,113 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:50:53,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:50:53,113 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:50:53,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:50:53,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:50:53,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:50:53,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:50:53,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:50:53,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:50:53,115 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:50:53,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:50:53,115 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:50:53,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:50:53,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:50:53,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:50:53,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:50:53,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:50:53,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:50:53,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:50:53,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:50:53,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:50:53,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:50:53,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:50:53,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:50:53,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:50:53,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:50:53,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:50:53,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:50:53,426 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:50:53,427 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:50:53,427 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/bist_cell.cil.c [2019-10-13 19:50:53,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee76352f4/3339c5b648604d73a14fa6c7bf53e80b/FLAGbca2dd07f [2019-10-13 19:50:54,010 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:50:54,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/bist_cell.cil.c [2019-10-13 19:50:54,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee76352f4/3339c5b648604d73a14fa6c7bf53e80b/FLAGbca2dd07f [2019-10-13 19:50:54,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee76352f4/3339c5b648604d73a14fa6c7bf53e80b [2019-10-13 19:50:54,410 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:50:54,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:50:54,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:50:54,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:50:54,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:50:54,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:54" (1/1) ... [2019-10-13 19:50:54,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d281660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:54, skipping insertion in model container [2019-10-13 19:50:54,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:50:54" (1/1) ... [2019-10-13 19:50:54,431 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:50:54,492 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:50:54,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:50:54,718 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:50:54,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:50:54,857 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:50:54,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:54 WrapperNode [2019-10-13 19:50:54,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:50:54,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:50:54,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:50:54,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:50:54,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:54" (1/1) ... [2019-10-13 19:50:54,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:54" (1/1) ... [2019-10-13 19:50:54,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:54" (1/1) ... [2019-10-13 19:50:54,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:54" (1/1) ... [2019-10-13 19:50:54,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:54" (1/1) ... [2019-10-13 19:50:54,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:54" (1/1) ... [2019-10-13 19:50:54,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:54" (1/1) ... [2019-10-13 19:50:54,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:50:54,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:50:54,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:50:54,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:50:54,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:54" (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 [2019-10-13 19:50:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:50:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:50:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-13 19:50:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure method1 [2019-10-13 19:50:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure is_method1_triggered [2019-10-13 19:50:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure update_b0 [2019-10-13 19:50:54,967 INFO L138 BoogieDeclarations]: Found implementation of procedure update_b1 [2019-10-13 19:50:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure update_d0 [2019-10-13 19:50:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure update_d1 [2019-10-13 19:50:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure update_z [2019-10-13 19:50:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-13 19:50:54,968 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-13 19:50:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-13 19:50:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-13 19:50:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-13 19:50:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-13 19:50:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-13 19:50:54,969 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-13 19:50:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-13 19:50:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-13 19:50:54,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:50:54,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:50:54,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:50:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-13 19:50:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure method1 [2019-10-13 19:50:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure is_method1_triggered [2019-10-13 19:50:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure update_b0 [2019-10-13 19:50:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure update_b1 [2019-10-13 19:50:54,971 INFO L130 BoogieDeclarations]: Found specification of procedure update_d0 [2019-10-13 19:50:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure update_d1 [2019-10-13 19:50:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure update_z [2019-10-13 19:50:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-13 19:50:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-13 19:50:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-13 19:50:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-13 19:50:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-13 19:50:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-13 19:50:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-13 19:50:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-13 19:50:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-13 19:50:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-13 19:50:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:50:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:50:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:50:55,479 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:50:55,479 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 19:50:55,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:55 BoogieIcfgContainer [2019-10-13 19:50:55,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:50:55,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:50:55,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:50:55,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:50:55,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:50:54" (1/3) ... [2019-10-13 19:50:55,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781ea6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:55, skipping insertion in model container [2019-10-13 19:50:55,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:50:54" (2/3) ... [2019-10-13 19:50:55,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781ea6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:50:55, skipping insertion in model container [2019-10-13 19:50:55,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:50:55" (3/3) ... [2019-10-13 19:50:55,488 INFO L109 eAbstractionObserver]: Analyzing ICFG bist_cell.cil.c [2019-10-13 19:50:55,499 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:50:55,507 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:50:55,517 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:50:55,544 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:50:55,545 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:50:55,545 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:50:55,545 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:50:55,545 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:50:55,545 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:50:55,546 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:50:55,546 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:50:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states. [2019-10-13 19:50:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-13 19:50:55,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:50:55,579 INFO L380 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] [2019-10-13 19:50:55,581 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:50:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:50:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash -778963544, now seen corresponding path program 1 times [2019-10-13 19:50:55,595 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:50:55,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550870321] [2019-10-13 19:50:55,595 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:55,596 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:50:55,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:50:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:50:56,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:50:56,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550870321] [2019-10-13 19:50:56,537 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:50:56,537 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:50:56,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136885744] [2019-10-13 19:50:56,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:50:56,544 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:50:56,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:50:56,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:50:56,566 INFO L87 Difference]: Start difference. First operand 141 states. Second operand 12 states. [2019-10-13 19:51:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:01,979 INFO L93 Difference]: Finished difference Result 590 states and 1000 transitions. [2019-10-13 19:51:01,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-13 19:51:01,986 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2019-10-13 19:51:01,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:02,009 INFO L225 Difference]: With dead ends: 590 [2019-10-13 19:51:02,009 INFO L226 Difference]: Without dead ends: 459 [2019-10-13 19:51:02,016 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 19:51:02,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2019-10-13 19:51:02,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 288. [2019-10-13 19:51:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2019-10-13 19:51:02,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 410 transitions. [2019-10-13 19:51:02,155 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 410 transitions. Word has length 58 [2019-10-13 19:51:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:02,156 INFO L462 AbstractCegarLoop]: Abstraction has 288 states and 410 transitions. [2019-10-13 19:51:02,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:51:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 410 transitions. [2019-10-13 19:51:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 19:51:02,166 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:02,167 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:51:02,167 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:02,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:02,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1800050042, now seen corresponding path program 1 times [2019-10-13 19:51:02,168 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:02,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138899516] [2019-10-13 19:51:02,168 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:02,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:02,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 19:51:02,794 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138899516] [2019-10-13 19:51:02,794 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371250758] [2019-10-13 19:51:02,795 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 [2019-10-13 19:51:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:02,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 19:51:02,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:51:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 19:51:03,072 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:51:03,072 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5] total 17 [2019-10-13 19:51:03,073 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861291060] [2019-10-13 19:51:03,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 19:51:03,076 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:03,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 19:51:03,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:51:03,077 INFO L87 Difference]: Start difference. First operand 288 states and 410 transitions. Second operand 17 states. [2019-10-13 19:51:08,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:08,539 INFO L93 Difference]: Finished difference Result 1329 states and 2190 transitions. [2019-10-13 19:51:08,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-10-13 19:51:08,539 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 125 [2019-10-13 19:51:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:08,551 INFO L225 Difference]: With dead ends: 1329 [2019-10-13 19:51:08,551 INFO L226 Difference]: Without dead ends: 1061 [2019-10-13 19:51:08,558 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=756, Invalid=2550, Unknown=0, NotChecked=0, Total=3306 [2019-10-13 19:51:08,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2019-10-13 19:51:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 674. [2019-10-13 19:51:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2019-10-13 19:51:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 979 transitions. [2019-10-13 19:51:08,699 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 979 transitions. Word has length 125 [2019-10-13 19:51:08,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:08,699 INFO L462 AbstractCegarLoop]: Abstraction has 674 states and 979 transitions. [2019-10-13 19:51:08,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 19:51:08,700 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 979 transitions. [2019-10-13 19:51:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 19:51:08,708 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:08,709 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:51:08,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:08,915 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:08,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:08,915 INFO L82 PathProgramCache]: Analyzing trace with hash 783260214, now seen corresponding path program 1 times [2019-10-13 19:51:08,916 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:08,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595616397] [2019-10-13 19:51:08,916 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:08,917 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:08,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 19:51:09,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595616397] [2019-10-13 19:51:09,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054257457] [2019-10-13 19:51:09,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:09,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 19:51:09,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:51:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 19:51:09,859 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:51:09,859 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 17 [2019-10-13 19:51:09,859 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527905488] [2019-10-13 19:51:09,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 19:51:09,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:09,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 19:51:09,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:51:09,861 INFO L87 Difference]: Start difference. First operand 674 states and 979 transitions. Second operand 17 states. [2019-10-13 19:51:11,124 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2019-10-13 19:51:11,915 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-13 19:51:12,060 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-13 19:51:12,388 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2019-10-13 19:51:12,685 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-10-13 19:51:12,967 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-10-13 19:51:15,636 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-10-13 19:51:16,745 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2019-10-13 19:51:16,907 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-10-13 19:51:18,206 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-10-13 19:51:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:22,875 INFO L93 Difference]: Finished difference Result 5682 states and 9970 transitions. [2019-10-13 19:51:22,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2019-10-13 19:51:22,876 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 127 [2019-10-13 19:51:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:22,914 INFO L225 Difference]: With dead ends: 5682 [2019-10-13 19:51:22,914 INFO L226 Difference]: Without dead ends: 5035 [2019-10-13 19:51:22,926 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5178 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1863, Invalid=11709, Unknown=0, NotChecked=0, Total=13572 [2019-10-13 19:51:22,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5035 states. [2019-10-13 19:51:23,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5035 to 3920. [2019-10-13 19:51:23,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3920 states. [2019-10-13 19:51:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 5954 transitions. [2019-10-13 19:51:23,382 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 5954 transitions. Word has length 127 [2019-10-13 19:51:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:23,383 INFO L462 AbstractCegarLoop]: Abstraction has 3920 states and 5954 transitions. [2019-10-13 19:51:23,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 19:51:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 5954 transitions. [2019-10-13 19:51:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-13 19:51:23,413 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:23,414 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:51:23,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:23,619 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:23,620 INFO L82 PathProgramCache]: Analyzing trace with hash -910777502, now seen corresponding path program 1 times [2019-10-13 19:51:23,620 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:23,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010941654] [2019-10-13 19:51:23,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:23,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:23,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 19:51:24,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010941654] [2019-10-13 19:51:24,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583027497] [2019-10-13 19:51:24,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 19:51:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:24,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 19:51:24,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:51:24,368 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 19:51:24,369 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:51:24,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5] total 17 [2019-10-13 19:51:24,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770674358] [2019-10-13 19:51:24,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 19:51:24,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:51:24,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 19:51:24,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:51:24,371 INFO L87 Difference]: Start difference. First operand 3920 states and 5954 transitions. Second operand 17 states. [2019-10-13 19:51:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:51:30,244 INFO L93 Difference]: Finished difference Result 10797 states and 16198 transitions. [2019-10-13 19:51:30,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-10-13 19:51:30,244 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 129 [2019-10-13 19:51:30,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:51:30,294 INFO L225 Difference]: With dead ends: 10797 [2019-10-13 19:51:30,294 INFO L226 Difference]: Without dead ends: 7155 [2019-10-13 19:51:30,313 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=605, Invalid=1845, Unknown=0, NotChecked=0, Total=2450 [2019-10-13 19:51:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7155 states. [2019-10-13 19:51:31,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7155 to 5960. [2019-10-13 19:51:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5960 states. [2019-10-13 19:51:31,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 8444 transitions. [2019-10-13 19:51:31,045 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 8444 transitions. Word has length 129 [2019-10-13 19:51:31,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:51:31,046 INFO L462 AbstractCegarLoop]: Abstraction has 5960 states and 8444 transitions. [2019-10-13 19:51:31,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 19:51:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 8444 transitions. [2019-10-13 19:51:31,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 19:51:31,080 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:51:31,081 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:51:31,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:51:31,286 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:51:31,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:51:31,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1815338196, now seen corresponding path program 1 times [2019-10-13 19:51:31,287 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:51:31,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58375186] [2019-10-13 19:51:31,288 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:31,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:51:31,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:51:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:51:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 19:51:31,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58375186] [2019-10-13 19:51:31,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104540246] [2019-10-13 19:51:31,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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