/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:31:34,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:31:34,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:31:34,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:31:34,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:31:34,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:31:34,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:31:34,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:31:34,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:31:34,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:31:34,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:31:34,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:31:34,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:31:34,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:31:34,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:31:34,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:31:34,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:31:34,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:31:34,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:31:34,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:31:34,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:31:34,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:31:34,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:31:34,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:31:34,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:31:34,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:31:34,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:31:34,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:31:34,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:31:34,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:31:34,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:31:34,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:31:34,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:31:34,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:31:34,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:31:34,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:31:34,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:31:34,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:31:34,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:31:34,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:31:34,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:31:34,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:31:35,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:31:35,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:31:35,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:31:35,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:31:35,015 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:31:35,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:31:35,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:31:35,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:31:35,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:31:35,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:31:35,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:31:35,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:31:35,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:31:35,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:31:35,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:31:35,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:31:35,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:31:35,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:31:35,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:31:35,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:31:35,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:31:35,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:31:35,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:31:35,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:31:35,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:31:35,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:31:35,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:31:35,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:31:35,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:31:35,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:31:35,509 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:31:35,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i [2020-12-22 13:31:35,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11cea06a/c064abd2d43247959d650a930b8c538c/FLAG0c8245dd3 [2020-12-22 13:31:36,726 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:31:36,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i [2020-12-22 13:31:36,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11cea06a/c064abd2d43247959d650a930b8c538c/FLAG0c8245dd3 [2020-12-22 13:31:37,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11cea06a/c064abd2d43247959d650a930b8c538c [2020-12-22 13:31:37,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:31:37,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:31:37,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:31:37,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:31:37,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:31:37,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:31:37" (1/1) ... [2020-12-22 13:31:37,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3ea983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:37, skipping insertion in model container [2020-12-22 13:31:37,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:31:37" (1/1) ... [2020-12-22 13:31:37,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:31:37,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:31:37,990 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6069] [2020-12-22 13:31:37,991 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6070-6071] [2020-12-22 13:31:38,366 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i[181805,181818] [2020-12-22 13:31:39,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:31:39,890 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:31:40,111 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6069] [2020-12-22 13:31:40,111 WARN L1208 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6070-6071] [2020-12-22 13:31:40,121 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i[181805,181818] [2020-12-22 13:31:40,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:31:40,681 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:31:40,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40 WrapperNode [2020-12-22 13:31:40,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:31:40,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:31:40,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:31:40,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:31:40,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40" (1/1) ... [2020-12-22 13:31:40,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40" (1/1) ... [2020-12-22 13:31:41,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:31:41,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:31:41,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:31:41,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:31:41,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40" (1/1) ... [2020-12-22 13:31:41,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40" (1/1) ... [2020-12-22 13:31:41,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40" (1/1) ... [2020-12-22 13:31:41,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40" (1/1) ... [2020-12-22 13:31:41,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40" (1/1) ... [2020-12-22 13:31:41,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40" (1/1) ... [2020-12-22 13:31:41,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40" (1/1) ... [2020-12-22 13:31:41,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:31:41,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:31:41,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:31:41,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:31:41,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:31:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:31:41,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:31:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:31:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:31:41,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:31:41,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:31:41,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:31:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:31:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:31:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:31:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:31:41,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:31:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:31:41,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:31:41,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:32:04,416 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:32:04,416 INFO L299 CfgBuilder]: Removed 945 assume(true) statements. [2020-12-22 13:32:04,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:32:04 BoogieIcfgContainer [2020-12-22 13:32:04,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:32:04,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:32:04,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:32:04,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:32:04,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:31:37" (1/3) ... [2020-12-22 13:32:04,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0bee9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:32:04, skipping insertion in model container [2020-12-22 13:32:04,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:31:40" (2/3) ... [2020-12-22 13:32:04,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0bee9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:32:04, skipping insertion in model container [2020-12-22 13:32:04,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:32:04" (3/3) ... [2020-12-22 13:32:04,438 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--hfcsusb.ko-entry_point.cil.out.i [2020-12-22 13:32:04,449 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:32:04,456 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-12-22 13:32:04,476 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-12-22 13:32:04,533 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:32:04,533 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:32:04,533 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:32:04,533 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:32:04,534 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:32:04,534 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:32:04,534 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:32:04,534 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:32:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states. [2020-12-22 13:32:04,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 13:32:04,595 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:32:04,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:32:04,596 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:32:04,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:32:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1174501541, now seen corresponding path program 1 times [2020-12-22 13:32:04,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:32:04,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801018816] [2020-12-22 13:32:04,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:32:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:32:05,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801018816] [2020-12-22 13:32:05,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:32:05,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:32:05,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025424278] [2020-12-22 13:32:05,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:32:05,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:32:05,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:32:05,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:05,668 INFO L87 Difference]: Start difference. First operand 1066 states. Second operand 3 states. [2020-12-22 13:32:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:32:05,991 INFO L93 Difference]: Finished difference Result 2148 states and 3123 transitions. [2020-12-22 13:32:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:32:05,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 13:32:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:32:06,030 INFO L225 Difference]: With dead ends: 2148 [2020-12-22 13:32:06,030 INFO L226 Difference]: Without dead ends: 1071 [2020-12-22 13:32:06,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:06,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2020-12-22 13:32:06,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1070. [2020-12-22 13:32:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-12-22 13:32:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1536 transitions. [2020-12-22 13:32:06,190 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1536 transitions. Word has length 19 [2020-12-22 13:32:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:32:06,190 INFO L481 AbstractCegarLoop]: Abstraction has 1070 states and 1536 transitions. [2020-12-22 13:32:06,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:32:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1536 transitions. [2020-12-22 13:32:06,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 13:32:06,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:32:06,195 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:32:06,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:32:06,196 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:32:06,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:32:06,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1689997555, now seen corresponding path program 1 times [2020-12-22 13:32:06,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:32:06,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425490131] [2020-12-22 13:32:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:32:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:32:06,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425490131] [2020-12-22 13:32:06,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:32:06,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:32:06,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854433340] [2020-12-22 13:32:06,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:32:06,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:32:06,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:32:06,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:06,754 INFO L87 Difference]: Start difference. First operand 1070 states and 1536 transitions. Second operand 3 states. [2020-12-22 13:32:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:32:07,037 INFO L93 Difference]: Finished difference Result 2605 states and 3782 transitions. [2020-12-22 13:32:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:32:07,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-12-22 13:32:07,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:32:07,047 INFO L225 Difference]: With dead ends: 2605 [2020-12-22 13:32:07,048 INFO L226 Difference]: Without dead ends: 1543 [2020-12-22 13:32:07,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-12-22 13:32:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1077. [2020-12-22 13:32:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-12-22 13:32:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1546 transitions. [2020-12-22 13:32:07,087 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1546 transitions. Word has length 34 [2020-12-22 13:32:07,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:32:07,087 INFO L481 AbstractCegarLoop]: Abstraction has 1077 states and 1546 transitions. [2020-12-22 13:32:07,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:32:07,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1546 transitions. [2020-12-22 13:32:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 13:32:07,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:32:07,090 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:32:07,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:32:07,096 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:32:07,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:32:07,097 INFO L82 PathProgramCache]: Analyzing trace with hash 775252375, now seen corresponding path program 1 times [2020-12-22 13:32:07,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:32:07,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568056787] [2020-12-22 13:32:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:32:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:07,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:32:07,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568056787] [2020-12-22 13:32:07,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:32:07,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:32:07,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784673552] [2020-12-22 13:32:07,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:32:07,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:32:07,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:32:07,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:07,519 INFO L87 Difference]: Start difference. First operand 1077 states and 1546 transitions. Second operand 3 states. [2020-12-22 13:32:07,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:32:07,611 INFO L93 Difference]: Finished difference Result 2655 states and 3859 transitions. [2020-12-22 13:32:07,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:32:07,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 13:32:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:32:07,622 INFO L225 Difference]: With dead ends: 2655 [2020-12-22 13:32:07,622 INFO L226 Difference]: Without dead ends: 1586 [2020-12-22 13:32:07,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-12-22 13:32:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1120. [2020-12-22 13:32:07,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1120 states. [2020-12-22 13:32:07,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1613 transitions. [2020-12-22 13:32:07,667 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1613 transitions. Word has length 40 [2020-12-22 13:32:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:32:07,668 INFO L481 AbstractCegarLoop]: Abstraction has 1120 states and 1613 transitions. [2020-12-22 13:32:07,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:32:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1613 transitions. [2020-12-22 13:32:07,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 13:32:07,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:32:07,674 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:32:07,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:32:07,674 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:32:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:32:07,675 INFO L82 PathProgramCache]: Analyzing trace with hash 989671317, now seen corresponding path program 1 times [2020-12-22 13:32:07,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:32:07,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489401408] [2020-12-22 13:32:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:32:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:32:08,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489401408] [2020-12-22 13:32:08,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:32:08,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:32:08,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561136289] [2020-12-22 13:32:08,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:32:08,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:32:08,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:32:08,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:08,044 INFO L87 Difference]: Start difference. First operand 1120 states and 1613 transitions. Second operand 3 states. [2020-12-22 13:32:10,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:32:10,279 INFO L93 Difference]: Finished difference Result 2252 states and 3248 transitions. [2020-12-22 13:32:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:32:10,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 13:32:10,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:32:10,286 INFO L225 Difference]: With dead ends: 2252 [2020-12-22 13:32:10,287 INFO L226 Difference]: Without dead ends: 1140 [2020-12-22 13:32:10,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:10,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2020-12-22 13:32:10,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1139. [2020-12-22 13:32:10,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-22 13:32:10,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1640 transitions. [2020-12-22 13:32:10,323 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1640 transitions. Word has length 52 [2020-12-22 13:32:10,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:32:10,323 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1640 transitions. [2020-12-22 13:32:10,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:32:10,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1640 transitions. [2020-12-22 13:32:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 13:32:10,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:32:10,325 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:32:10,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:32:10,326 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:32:10,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:32:10,326 INFO L82 PathProgramCache]: Analyzing trace with hash 800376203, now seen corresponding path program 1 times [2020-12-22 13:32:10,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:32:10,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024499899] [2020-12-22 13:32:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:32:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:32:10,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024499899] [2020-12-22 13:32:10,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:32:10,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:32:10,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111972747] [2020-12-22 13:32:10,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:32:10,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:32:10,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:32:10,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:10,620 INFO L87 Difference]: Start difference. First operand 1139 states and 1640 transitions. Second operand 3 states. [2020-12-22 13:32:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:32:11,272 INFO L93 Difference]: Finished difference Result 3352 states and 4829 transitions. [2020-12-22 13:32:11,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:32:11,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-22 13:32:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:32:11,288 INFO L225 Difference]: With dead ends: 3352 [2020-12-22 13:32:11,289 INFO L226 Difference]: Without dead ends: 2221 [2020-12-22 13:32:11,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2020-12-22 13:32:11,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 1141. [2020-12-22 13:32:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2020-12-22 13:32:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1642 transitions. [2020-12-22 13:32:11,338 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1642 transitions. Word has length 59 [2020-12-22 13:32:11,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:32:11,339 INFO L481 AbstractCegarLoop]: Abstraction has 1141 states and 1642 transitions. [2020-12-22 13:32:11,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:32:11,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1642 transitions. [2020-12-22 13:32:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 13:32:11,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:32:11,341 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 13:32:11,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:32:11,342 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:32:11,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:32:11,342 INFO L82 PathProgramCache]: Analyzing trace with hash 891754748, now seen corresponding path program 1 times [2020-12-22 13:32:11,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:32:11,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143853358] [2020-12-22 13:32:11,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:32:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:32:11,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143853358] [2020-12-22 13:32:11,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:32:11,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:32:11,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527952358] [2020-12-22 13:32:11,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:32:11,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:32:11,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:32:11,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:32:11,694 INFO L87 Difference]: Start difference. First operand 1141 states and 1642 transitions. Second operand 4 states. [2020-12-22 13:32:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:32:14,039 INFO L93 Difference]: Finished difference Result 2956 states and 4218 transitions. [2020-12-22 13:32:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:32:14,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 13:32:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:32:14,052 INFO L225 Difference]: With dead ends: 2956 [2020-12-22 13:32:14,052 INFO L226 Difference]: Without dead ends: 1823 [2020-12-22 13:32:14,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:32:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2020-12-22 13:32:14,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1143. [2020-12-22 13:32:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-12-22 13:32:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1644 transitions. [2020-12-22 13:32:14,111 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1644 transitions. Word has length 63 [2020-12-22 13:32:14,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:32:14,112 INFO L481 AbstractCegarLoop]: Abstraction has 1143 states and 1644 transitions. [2020-12-22 13:32:14,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:32:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1644 transitions. [2020-12-22 13:32:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 13:32:14,113 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:32:14,113 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:32:14,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:32:14,113 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:32:14,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:32:14,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1649213496, now seen corresponding path program 1 times [2020-12-22 13:32:14,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:32:14,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855817098] [2020-12-22 13:32:14,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:32:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:32:14,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855817098] [2020-12-22 13:32:14,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:32:14,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:32:14,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767092866] [2020-12-22 13:32:14,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:32:14,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:32:14,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:32:14,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:14,577 INFO L87 Difference]: Start difference. First operand 1143 states and 1644 transitions. Second operand 3 states. [2020-12-22 13:32:14,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:32:14,712 INFO L93 Difference]: Finished difference Result 3380 states and 4862 transitions. [2020-12-22 13:32:14,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:32:14,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 13:32:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:32:14,725 INFO L225 Difference]: With dead ends: 3380 [2020-12-22 13:32:14,725 INFO L226 Difference]: Without dead ends: 2245 [2020-12-22 13:32:14,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:32:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-12-22 13:32:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 1197. [2020-12-22 13:32:14,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-12-22 13:32:14,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1728 transitions. [2020-12-22 13:32:14,800 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1728 transitions. Word has length 64 [2020-12-22 13:32:14,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:32:14,801 INFO L481 AbstractCegarLoop]: Abstraction has 1197 states and 1728 transitions. [2020-12-22 13:32:14,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:32:14,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1728 transitions. [2020-12-22 13:32:14,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 13:32:14,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:32:14,802 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:32:14,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:32:14,803 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:32:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:32:14,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1062407482, now seen corresponding path program 1 times [2020-12-22 13:32:14,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:32:14,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074584986] [2020-12-22 13:32:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:32:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:32:15,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074584986] [2020-12-22 13:32:15,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122787977] [2020-12-22 13:32:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:32:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:16,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 3210 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:32:16,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:32:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:32:16,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:32:16,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 13:32:16,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684010789] [2020-12-22 13:32:16,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:32:16,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:32:16,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:32:16,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:32:16,999 INFO L87 Difference]: Start difference. First operand 1197 states and 1728 transitions. Second operand 3 states. [2020-12-22 13:32:17,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:32:17,354 INFO L93 Difference]: Finished difference Result 1197 states and 1728 transitions. [2020-12-22 13:32:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:32:17,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 13:32:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:32:17,362 INFO L225 Difference]: With dead ends: 1197 [2020-12-22 13:32:17,363 INFO L226 Difference]: Without dead ends: 1193 [2020-12-22 13:32:17,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:32:17,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-12-22 13:32:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1193. [2020-12-22 13:32:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-12-22 13:32:17,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1724 transitions. [2020-12-22 13:32:17,416 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1724 transitions. Word has length 64 [2020-12-22 13:32:17,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:32:17,417 INFO L481 AbstractCegarLoop]: Abstraction has 1193 states and 1724 transitions. [2020-12-22 13:32:17,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:32:17,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1724 transitions. [2020-12-22 13:32:17,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 13:32:17,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:32:17,419 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:32:17,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-22 13:32:17,633 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:32:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:32:17,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1174963038, now seen corresponding path program 1 times [2020-12-22 13:32:17,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:32:17,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983361471] [2020-12-22 13:32:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:32:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:32:17,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983361471] [2020-12-22 13:32:17,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105222626] [2020-12-22 13:32:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:32:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:19,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 3831 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:32:19,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:32:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:32:20,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:32:20,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 13:32:20,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226037472] [2020-12-22 13:32:20,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:32:20,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:32:20,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:32:20,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:32:20,084 INFO L87 Difference]: Start difference. First operand 1193 states and 1724 transitions. Second operand 3 states. [2020-12-22 13:32:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:32:20,259 INFO L93 Difference]: Finished difference Result 2384 states and 3446 transitions. [2020-12-22 13:32:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:32:20,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-12-22 13:32:20,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:32:20,267 INFO L225 Difference]: With dead ends: 2384 [2020-12-22 13:32:20,268 INFO L226 Difference]: Without dead ends: 1199 [2020-12-22 13:32:20,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:32:20,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-12-22 13:32:20,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1194. [2020-12-22 13:32:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2020-12-22 13:32:20,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1725 transitions. [2020-12-22 13:32:20,334 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1725 transitions. Word has length 109 [2020-12-22 13:32:20,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:32:20,335 INFO L481 AbstractCegarLoop]: Abstraction has 1194 states and 1725 transitions. [2020-12-22 13:32:20,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:32:20,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1725 transitions. [2020-12-22 13:32:20,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 13:32:20,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:32:20,337 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:32:20,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:32:20,539 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:32:20,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:32:20,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2039029606, now seen corresponding path program 1 times [2020-12-22 13:32:20,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:32:20,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453955538] [2020-12-22 13:32:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:32:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:32:20,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453955538] [2020-12-22 13:32:20,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459129188] [2020-12-22 13:32:20,920 INFO L95 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 [2020-12-22 13:32:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:22,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 3925 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:32:22,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:32:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:32:23,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:32:23,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 13:32:23,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598486989] [2020-12-22 13:32:23,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:32:23,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:32:23,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:32:23,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:32:23,039 INFO L87 Difference]: Start difference. First operand 1194 states and 1725 transitions. Second operand 5 states. [2020-12-22 13:32:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:32:24,261 INFO L93 Difference]: Finished difference Result 4649 states and 6721 transitions. [2020-12-22 13:32:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:32:24,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-12-22 13:32:24,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:32:24,284 INFO L225 Difference]: With dead ends: 4649 [2020-12-22 13:32:24,284 INFO L226 Difference]: Without dead ends: 3463 [2020-12-22 13:32:24,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:32:24,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2020-12-22 13:32:24,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 1214. [2020-12-22 13:32:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2020-12-22 13:32:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1753 transitions. [2020-12-22 13:32:24,366 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1753 transitions. Word has length 115 [2020-12-22 13:32:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:32:24,367 INFO L481 AbstractCegarLoop]: Abstraction has 1214 states and 1753 transitions. [2020-12-22 13:32:24,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:32:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1753 transitions. [2020-12-22 13:32:24,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 13:32:24,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:32:24,368 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:32:24,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 13:32:24,582 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:32:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:32:24,583 INFO L82 PathProgramCache]: Analyzing trace with hash -707228139, now seen corresponding path program 2 times [2020-12-22 13:32:24,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:32:24,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119549406] [2020-12-22 13:32:24,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:32:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:32:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 13:32:24,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119549406] [2020-12-22 13:32:24,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145131367] [2020-12-22 13:32:24,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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