./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 40ab708e219f84bb7ba4362e0569b71b9ae13cfa586a42c01067e9be1995b8da --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 05:43:37,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 05:43:38,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 05:43:38,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 05:43:38,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 05:43:38,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 05:43:38,021 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 05:43:38,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 05:43:38,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 05:43:38,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 05:43:38,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 05:43:38,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 05:43:38,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 05:43:38,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 05:43:38,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 05:43:38,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 05:43:38,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 05:43:38,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 05:43:38,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 05:43:38,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 05:43:38,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 05:43:38,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 05:43:38,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 05:43:38,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 05:43:38,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 05:43:38,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 05:43:38,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 05:43:38,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 05:43:38,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 05:43:38,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 05:43:38,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 05:43:38,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 05:43:38,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 05:43:38,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 05:43:38,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 05:43:38,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 05:43:38,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 05:43:38,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 05:43:38,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 05:43:38,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 05:43:38,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 05:43:38,047 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 05:43:38,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 05:43:38,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 05:43:38,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 05:43:38,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 05:43:38,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 05:43:38,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 05:43:38,075 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 05:43:38,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 05:43:38,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 05:43:38,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 05:43:38,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 05:43:38,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 05:43:38,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 05:43:38,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 05:43:38,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 05:43:38,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 05:43:38,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 05:43:38,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 05:43:38,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 05:43:38,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 05:43:38,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 05:43:38,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 05:43:38,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 05:43:38,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 05:43:38,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 05:43:38,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 05:43:38,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 05:43:38,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 05:43:38,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 05:43:38,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40ab708e219f84bb7ba4362e0569b71b9ae13cfa586a42c01067e9be1995b8da [2021-11-04 05:43:38,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 05:43:38,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 05:43:38,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 05:43:38,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 05:43:38,299 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 05:43:38,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2021-11-04 05:43:38,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e983a87aa/f4f25b3fd52d4d368b8377785cb4773f/FLAG4af716e82 [2021-11-04 05:43:38,981 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 05:43:38,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2021-11-04 05:43:39,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e983a87aa/f4f25b3fd52d4d368b8377785cb4773f/FLAG4af716e82 [2021-11-04 05:43:39,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e983a87aa/f4f25b3fd52d4d368b8377785cb4773f [2021-11-04 05:43:39,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 05:43:39,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 05:43:39,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 05:43:39,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 05:43:39,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 05:43:39,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:43:39" (1/1) ... [2021-11-04 05:43:39,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cdf77c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:39, skipping insertion in model container [2021-11-04 05:43:39,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:43:39" (1/1) ... [2021-11-04 05:43:39,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 05:43:39,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 05:43:40,792 WARN L228 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[302849,302862] [2021-11-04 05:43:40,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 05:43:40,888 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 05:43:41,180 WARN L228 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-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[302849,302862] [2021-11-04 05:43:41,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 05:43:41,280 INFO L208 MainTranslator]: Completed translation [2021-11-04 05:43:41,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41 WrapperNode [2021-11-04 05:43:41,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 05:43:41,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 05:43:41,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 05:43:41,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 05:43:41,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41" (1/1) ... [2021-11-04 05:43:41,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41" (1/1) ... [2021-11-04 05:43:41,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 05:43:41,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 05:43:41,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 05:43:41,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 05:43:41,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41" (1/1) ... [2021-11-04 05:43:41,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41" (1/1) ... [2021-11-04 05:43:42,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41" (1/1) ... [2021-11-04 05:43:42,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41" (1/1) ... [2021-11-04 05:43:42,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41" (1/1) ... [2021-11-04 05:43:42,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41" (1/1) ... [2021-11-04 05:43:42,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41" (1/1) ... [2021-11-04 05:43:42,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 05:43:42,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 05:43:42,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 05:43:42,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 05:43:42,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41" (1/1) ... [2021-11-04 05:43:42,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 05:43:42,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 05:43:42,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 05:43:42,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 05:43:42,887 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-04 05:43:42,888 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-04 05:43:42,888 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-04 05:43:42,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 05:43:42,889 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_smi_msg_received [2021-11-04 05:43:42,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_smi_msg_received [2021-11-04 05:43:42,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 05:43:42,889 INFO L130 BoogieDeclarations]: Found specification of procedure handle_read_event_rsp [2021-11-04 05:43:42,890 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_read_event_rsp [2021-11-04 05:43:42,890 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_cmd [2021-11-04 05:43:42,890 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_cmd [2021-11-04 05:43:42,890 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_cmd [2021-11-04 05:43:42,890 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_cmd [2021-11-04 05:43:42,890 INFO L130 BoogieDeclarations]: Found specification of procedure handle_bmc_rsp [2021-11-04 05:43:42,890 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_bmc_rsp [2021-11-04 05:43:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2021-11-04 05:43:42,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2021-11-04 05:43:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure handle_oem_get_msg_cmd [2021-11-04 05:43:42,891 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_oem_get_msg_cmd [2021-11-04 05:43:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 05:43:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 05:43:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-04 05:43:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 05:43:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 05:43:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 05:43:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2021-11-04 05:43:42,892 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2021-11-04 05:43:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 05:43:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2021-11-04 05:43:42,892 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2021-11-04 05:43:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2021-11-04 05:43:42,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2021-11-04 05:43:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 05:43:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_rsp [2021-11-04 05:43:42,893 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_rsp [2021-11-04 05:43:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_err_response [2021-11-04 05:43:42,893 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_err_response [2021-11-04 05:43:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 05:43:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-04 05:43:42,894 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-04 05:43:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 05:43:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_rsp [2021-11-04 05:43:42,894 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_rsp [2021-11-04 05:43:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 05:43:42,894 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2021-11-04 05:43:42,895 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2021-11-04 05:43:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 05:43:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure handle_one_recv_msg [2021-11-04 05:43:42,895 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_one_recv_msg [2021-11-04 05:43:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure intf_err_seq [2021-11-04 05:43:42,895 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_err_seq [2021-11-04 05:43:42,896 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 05:43:42,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 05:43:42,896 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2021-11-04 05:43:42,896 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2021-11-04 05:43:42,896 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2021-11-04 05:43:42,896 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2021-11-04 05:43:42,896 INFO L130 BoogieDeclarations]: Found specification of procedure smi_recv_tasklet [2021-11-04 05:43:42,897 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_recv_tasklet [2021-11-04 05:43:42,897 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2021-11-04 05:43:42,898 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2021-11-04 05:43:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 05:43:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2021-11-04 05:43:42,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2021-11-04 05:43:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-04 05:43:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 05:43:42,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 05:43:50,273 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 05:43:50,273 INFO L299 CfgBuilder]: Removed 3366 assume(true) statements. [2021-11-04 05:43:50,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:43:50 BoogieIcfgContainer [2021-11-04 05:43:50,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 05:43:50,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 05:43:50,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 05:43:50,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 05:43:50,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 05:43:39" (1/3) ... [2021-11-04 05:43:50,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd6804f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:43:50, skipping insertion in model container [2021-11-04 05:43:50,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:43:41" (2/3) ... [2021-11-04 05:43:50,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd6804f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:43:50, skipping insertion in model container [2021-11-04 05:43:50,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:43:50" (3/3) ... [2021-11-04 05:43:50,292 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2021-11-04 05:43:50,297 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 05:43:50,297 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-04 05:43:50,347 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 05:43:50,353 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 05:43:50,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-04 05:43:50,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 4098 states, 3992 states have (on average 1.532815631262525) internal successors, (6119), 4014 states have internal predecessors, (6119), 80 states have call successors, (80), 24 states have call predecessors, (80), 24 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-04 05:43:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-04 05:43:50,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:43:50,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:43:50,434 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 05:43:50,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:43:50,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1600614866, now seen corresponding path program 1 times [2021-11-04 05:43:50,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:43:50,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468972812] [2021-11-04 05:43:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:43:50,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:43:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:43:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:43:50,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:43:50,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468972812] [2021-11-04 05:43:50,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468972812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:43:50,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:43:50,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:43:50,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521030134] [2021-11-04 05:43:50,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:43:51,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 05:43:51,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:43:51,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 05:43:51,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 05:43:51,027 INFO L87 Difference]: Start difference. First operand has 4098 states, 3992 states have (on average 1.532815631262525) internal successors, (6119), 4014 states have internal predecessors, (6119), 80 states have call successors, (80), 24 states have call predecessors, (80), 24 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:43:53,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:44:06,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:44:20,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:44:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:44:21,757 INFO L93 Difference]: Finished difference Result 8192 states and 12584 transitions. [2021-11-04 05:44:21,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 05:44:21,760 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-04 05:44:21,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:44:21,786 INFO L225 Difference]: With dead ends: 8192 [2021-11-04 05:44:21,786 INFO L226 Difference]: Without dead ends: 4076 [2021-11-04 05:44:21,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 05:44:21,801 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6028 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28414.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 6031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6028 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30225.92ms IncrementalHoareTripleChecker+Time [2021-11-04 05:44:21,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 6031 Unknown, 0 Unchecked, 29.12ms Time], IncrementalHoareTripleChecker [0 Valid, 6028 Invalid, 3 Unknown, 0 Unchecked, 30225.92ms Time] [2021-11-04 05:44:21,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-11-04 05:44:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 4076. [2021-11-04 05:44:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4076 states, 3971 states have (on average 1.5132208511709897) internal successors, (6009), 3992 states have internal predecessors, (6009), 80 states have call successors, (80), 24 states have call predecessors, (80), 24 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-04 05:44:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 6169 transitions. [2021-11-04 05:44:21,951 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 6169 transitions. Word has length 210 [2021-11-04 05:44:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:44:21,952 INFO L470 AbstractCegarLoop]: Abstraction has 4076 states and 6169 transitions. [2021-11-04 05:44:21,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:44:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 6169 transitions. [2021-11-04 05:44:21,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-04 05:44:21,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:44:21,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:44:21,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 05:44:21,961 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 05:44:21,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:44:21,962 INFO L85 PathProgramCache]: Analyzing trace with hash 30323700, now seen corresponding path program 1 times [2021-11-04 05:44:21,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:44:21,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512540252] [2021-11-04 05:44:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:44:21,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:44:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:44:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:44:22,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:44:22,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512540252] [2021-11-04 05:44:22,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512540252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:44:22,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:44:22,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:44:22,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805126010] [2021-11-04 05:44:22,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:44:22,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:44:22,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:44:22,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:44:22,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:44:22,453 INFO L87 Difference]: Start difference. First operand 4076 states and 6169 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:44:24,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:44:48,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:44:58,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:45:03,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:45:05,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:45:10,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:45:14,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:45:17,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:45:20,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:45:20,723 INFO L93 Difference]: Finished difference Result 7995 states and 12187 transitions. [2021-11-04 05:45:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:45:20,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-04 05:45:20,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:45:20,740 INFO L225 Difference]: With dead ends: 7995 [2021-11-04 05:45:20,740 INFO L226 Difference]: Without dead ends: 4083 [2021-11-04 05:45:20,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:45:20,749 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 6133 mSDsCounter, 0 mSdLazyCounter, 12002 mSolverCounterSat, 12 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54865.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 12020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.41ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 12002 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57705.10ms IncrementalHoareTripleChecker+Time [2021-11-04 05:45:20,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 12020 Unknown, 0 Unchecked, 68.41ms Time], IncrementalHoareTripleChecker [12 Valid, 12002 Invalid, 6 Unknown, 0 Unchecked, 57705.10ms Time] [2021-11-04 05:45:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2021-11-04 05:45:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 4083. [2021-11-04 05:45:20,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 3978 states have (on average 1.5123177476118652) internal successors, (6016), 3999 states have internal predecessors, (6016), 80 states have call successors, (80), 24 states have call predecessors, (80), 24 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-04 05:45:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 6176 transitions. [2021-11-04 05:45:20,850 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 6176 transitions. Word has length 210 [2021-11-04 05:45:20,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:45:20,852 INFO L470 AbstractCegarLoop]: Abstraction has 4083 states and 6176 transitions. [2021-11-04 05:45:20,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:45:20,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 6176 transitions. [2021-11-04 05:45:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-04 05:45:20,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:45:20,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:45:20,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 05:45:20,855 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 05:45:20,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:45:20,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1253038392, now seen corresponding path program 1 times [2021-11-04 05:45:20,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:45:20,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530445475] [2021-11-04 05:45:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:45:20,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:45:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:45:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 05:45:21,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:45:21,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530445475] [2021-11-04 05:45:21,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530445475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:45:21,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:45:21,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:45:21,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883482712] [2021-11-04 05:45:21,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:45:21,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:45:21,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:45:21,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:45:21,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:45:21,297 INFO L87 Difference]: Start difference. First operand 4083 states and 6176 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:45:23,383 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:45:41,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:45:46,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:45:49,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:46:00,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:46:02,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:46:08,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:46:12,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:46:17,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:46:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:46:20,451 INFO L93 Difference]: Finished difference Result 7994 states and 12180 transitions. [2021-11-04 05:46:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:46:20,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2021-11-04 05:46:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:46:20,464 INFO L225 Difference]: With dead ends: 7994 [2021-11-04 05:46:20,465 INFO L226 Difference]: Without dead ends: 4087 [2021-11-04 05:46:20,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:46:20,476 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 6131 mSDsCounter, 0 mSdLazyCounter, 12001 mSolverCounterSat, 6 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55865.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 12015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 73.93ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12001 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58706.57ms IncrementalHoareTripleChecker+Time [2021-11-04 05:46:20,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 12015 Unknown, 0 Unchecked, 73.93ms Time], IncrementalHoareTripleChecker [6 Valid, 12001 Invalid, 8 Unknown, 0 Unchecked, 58706.57ms Time] [2021-11-04 05:46:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2021-11-04 05:46:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 4087. [2021-11-04 05:46:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4087 states, 3982 states have (on average 1.5118031140130588) internal successors, (6020), 4003 states have internal predecessors, (6020), 80 states have call successors, (80), 24 states have call predecessors, (80), 24 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-04 05:46:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4087 states to 4087 states and 6180 transitions. [2021-11-04 05:46:20,545 INFO L78 Accepts]: Start accepts. Automaton has 4087 states and 6180 transitions. Word has length 217 [2021-11-04 05:46:20,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:46:20,546 INFO L470 AbstractCegarLoop]: Abstraction has 4087 states and 6180 transitions. [2021-11-04 05:46:20,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:46:20,546 INFO L276 IsEmpty]: Start isEmpty. Operand 4087 states and 6180 transitions. [2021-11-04 05:46:20,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-04 05:46:20,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:46:20,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:46:20,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 05:46:20,548 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 05:46:20,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:46:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash -535625554, now seen corresponding path program 1 times [2021-11-04 05:46:20,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:46:20,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670901821] [2021-11-04 05:46:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:46:20,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:46:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:46:20,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-04 05:46:20,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:46:20,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670901821] [2021-11-04 05:46:20,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670901821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:46:20,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:46:20,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:46:20,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534224073] [2021-11-04 05:46:20,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:46:20,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:46:20,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:46:20,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:46:20,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:46:20,916 INFO L87 Difference]: Start difference. First operand 4087 states and 6180 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:46:23,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:46:37,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:46:39,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:46:51,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:46:55,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:47:00,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:47:05,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:47:15,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:47:18,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:47:23,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:47:23,371 INFO L93 Difference]: Finished difference Result 11740 states and 17955 transitions. [2021-11-04 05:47:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:47:23,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2021-11-04 05:47:23,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:47:23,402 INFO L225 Difference]: With dead ends: 11740 [2021-11-04 05:47:23,402 INFO L226 Difference]: Without dead ends: 7861 [2021-11-04 05:47:23,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:47:23,413 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 5855 mSDsluCounter, 6099 mSDsCounter, 0 mSdLazyCounter, 11951 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58485.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5857 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 11959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.11ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11951 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61834.28ms IncrementalHoareTripleChecker+Time [2021-11-04 05:47:23,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5857 Valid, 399 Invalid, 11959 Unknown, 0 Unchecked, 57.11ms Time], IncrementalHoareTripleChecker [3 Valid, 11951 Invalid, 5 Unknown, 0 Unchecked, 61834.28ms Time] [2021-11-04 05:47:23,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7861 states. [2021-11-04 05:47:23,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7861 to 7861. [2021-11-04 05:47:23,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7861 states, 7653 states have (on average 1.5250228668496015) internal successors, (11671), 7694 states have internal predecessors, (11671), 159 states have call successors, (159), 48 states have call predecessors, (159), 48 states have return successors, (161), 155 states have call predecessors, (161), 159 states have call successors, (161) [2021-11-04 05:47:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 11991 transitions. [2021-11-04 05:47:23,569 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 11991 transitions. Word has length 221 [2021-11-04 05:47:23,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:47:23,570 INFO L470 AbstractCegarLoop]: Abstraction has 7861 states and 11991 transitions. [2021-11-04 05:47:23,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:47:23,570 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 11991 transitions. [2021-11-04 05:47:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-04 05:47:23,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:47:23,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:47:23,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 05:47:23,573 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 05:47:23,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:47:23,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2099193824, now seen corresponding path program 1 times [2021-11-04 05:47:23,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:47:23,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510778931] [2021-11-04 05:47:23,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:47:23,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:47:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:47:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-04 05:47:23,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:47:23,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510778931] [2021-11-04 05:47:23,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510778931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:47:23,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:47:23,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:47:23,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57435925] [2021-11-04 05:47:23,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:47:23,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:47:23,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:47:23,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:47:23,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:47:23,966 INFO L87 Difference]: Start difference. First operand 7861 states and 11991 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:47:26,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:47:41,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:47:43,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:47:52,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:48:00,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:48:03,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:48:09,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:48:22,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:48:22,525 INFO L93 Difference]: Finished difference Result 23050 states and 35340 transitions. [2021-11-04 05:48:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:48:22,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2021-11-04 05:48:22,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:48:22,585 INFO L225 Difference]: With dead ends: 23050 [2021-11-04 05:48:22,585 INFO L226 Difference]: Without dead ends: 15397 [2021-11-04 05:48:22,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:48:22,609 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 5871 mSDsluCounter, 5894 mSDsCounter, 0 mSdLazyCounter, 11743 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54483.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5871 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 11750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.35ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11743 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57903.35ms IncrementalHoareTripleChecker+Time [2021-11-04 05:48:22,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5871 Valid, 400 Invalid, 11750 Unknown, 0 Unchecked, 40.35ms Time], IncrementalHoareTripleChecker [4 Valid, 11743 Invalid, 3 Unknown, 0 Unchecked, 57903.35ms Time] [2021-11-04 05:48:22,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15397 states. [2021-11-04 05:48:22,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15397 to 15394. [2021-11-04 05:48:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15394 states, 14979 states have (on average 1.5304092396021096) internal successors, (22924), 15061 states have internal predecessors, (22924), 318 states have call successors, (318), 96 states have call predecessors, (318), 96 states have return successors, (322), 310 states have call predecessors, (322), 318 states have call successors, (322) [2021-11-04 05:48:22,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15394 states to 15394 states and 23564 transitions. [2021-11-04 05:48:22,896 INFO L78 Accepts]: Start accepts. Automaton has 15394 states and 23564 transitions. Word has length 225 [2021-11-04 05:48:22,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:48:22,896 INFO L470 AbstractCegarLoop]: Abstraction has 15394 states and 23564 transitions. [2021-11-04 05:48:22,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:48:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 15394 states and 23564 transitions. [2021-11-04 05:48:22,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-04 05:48:22,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:48:22,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:48:22,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 05:48:22,899 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 05:48:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:48:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash 257786917, now seen corresponding path program 1 times [2021-11-04 05:48:22,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:48:22,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581238281] [2021-11-04 05:48:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:48:22,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:48:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:48:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-04 05:48:23,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:48:23,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581238281] [2021-11-04 05:48:23,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581238281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:48:23,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:48:23,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 05:48:23,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936169768] [2021-11-04 05:48:23,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:48:23,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 05:48:23,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:48:23,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 05:48:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 05:48:23,221 INFO L87 Difference]: Start difference. First operand 15394 states and 23564 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:48:25,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:48:32,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:48:50,945 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:48:56,046 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:48:58,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:49:01,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:49:20,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:49:29,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:49:34,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:49:37,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:49:46,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:49:54,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:50:06,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:50:10,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:50:13,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:50:26,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:50:32,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:50:51,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:50:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:50:53,594 INFO L93 Difference]: Finished difference Result 47113 states and 72262 transitions. [2021-11-04 05:50:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 05:50:53,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2021-11-04 05:50:53,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:50:53,707 INFO L225 Difference]: With dead ends: 47113 [2021-11-04 05:50:53,707 INFO L226 Difference]: Without dead ends: 31927 [2021-11-04 05:50:53,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.44ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 05:50:53,749 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 16189 mSDsluCounter, 21557 mSDsCounter, 0 mSdLazyCounter, 32663 mSolverCounterSat, 63 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141043.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16223 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 32739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 185.15ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 32663 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 148748.84ms IncrementalHoareTripleChecker+Time [2021-11-04 05:50:53,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16223 Valid, 896 Invalid, 32739 Unknown, 0 Unchecked, 185.15ms Time], IncrementalHoareTripleChecker [63 Valid, 32663 Invalid, 13 Unknown, 0 Unchecked, 148748.84ms Time] [2021-11-04 05:50:53,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31927 states. [2021-11-04 05:50:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31927 to 27253. [2021-11-04 05:50:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27253 states, 26568 states have (on average 1.5304878048780488) internal successors, (40662), 26706 states have internal predecessors, (40662), 540 states have call successors, (540), 144 states have call predecessors, (540), 144 states have return successors, (548), 528 states have call predecessors, (548), 540 states have call successors, (548) [2021-11-04 05:50:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27253 states to 27253 states and 41750 transitions. [2021-11-04 05:50:54,545 INFO L78 Accepts]: Start accepts. Automaton has 27253 states and 41750 transitions. Word has length 227 [2021-11-04 05:50:54,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:50:54,555 INFO L470 AbstractCegarLoop]: Abstraction has 27253 states and 41750 transitions. [2021-11-04 05:50:54,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 4 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:50:54,555 INFO L276 IsEmpty]: Start isEmpty. Operand 27253 states and 41750 transitions. [2021-11-04 05:50:54,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-04 05:50:54,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:50:54,567 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:50:54,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 05:50:54,567 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 05:50:54,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:50:54,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1297213408, now seen corresponding path program 1 times [2021-11-04 05:50:54,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:50:54,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376517810] [2021-11-04 05:50:54,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:50:54,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:50:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:50:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-04 05:50:54,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:50:54,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376517810] [2021-11-04 05:50:54,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376517810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:50:54,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:50:54,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:50:54,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723463853] [2021-11-04 05:50:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:50:54,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:50:54,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:50:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:50:54,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:50:54,996 INFO L87 Difference]: Start difference. First operand 27253 states and 41750 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:50:57,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:51:02,383 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:51:11,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:51:15,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:51:18,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:51:33,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:51:42,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:51:52,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:51:55,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:52:00,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:52:04,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:52:07,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:52:08,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:52:10,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:52:10,617 INFO L93 Difference]: Finished difference Result 40966 states and 62840 transitions. [2021-11-04 05:52:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:52:10,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-04 05:52:10,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:52:10,725 INFO L225 Difference]: With dead ends: 40966 [2021-11-04 05:52:10,726 INFO L226 Difference]: Without dead ends: 40944 [2021-11-04 05:52:10,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:52:10,749 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 4276 mSDsluCounter, 5953 mSDsCounter, 0 mSdLazyCounter, 11797 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70166.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4278 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 11806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11797 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74700.66ms IncrementalHoareTripleChecker+Time [2021-11-04 05:52:10,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4278 Valid, 384 Invalid, 11806 Unknown, 0 Unchecked, 52.08ms Time], IncrementalHoareTripleChecker [0 Valid, 11797 Invalid, 9 Unknown, 0 Unchecked, 74700.66ms Time] [2021-11-04 05:52:10,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40944 states. [2021-11-04 05:52:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40944 to 40944. [2021-11-04 05:52:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40944 states, 39819 states have (on average 1.5336146060925688) internal successors, (61067), 40042 states have internal predecessors, (61067), 860 states have call successors, (860), 264 states have call predecessors, (860), 264 states have return successors, (881), 838 states have call predecessors, (881), 860 states have call successors, (881) [2021-11-04 05:52:11,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40944 states to 40944 states and 62808 transitions. [2021-11-04 05:52:11,460 INFO L78 Accepts]: Start accepts. Automaton has 40944 states and 62808 transitions. Word has length 265 [2021-11-04 05:52:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:52:11,461 INFO L470 AbstractCegarLoop]: Abstraction has 40944 states and 62808 transitions. [2021-11-04 05:52:11,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:52:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 40944 states and 62808 transitions. [2021-11-04 05:52:11,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-04 05:52:11,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:52:11,493 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:52:11,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 05:52:11,494 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 05:52:11,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:52:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1587311073, now seen corresponding path program 1 times [2021-11-04 05:52:11,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:52:11,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86078553] [2021-11-04 05:52:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:52:11,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:52:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:52:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-04 05:52:12,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:52:12,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86078553] [2021-11-04 05:52:12,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86078553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:52:12,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:52:12,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:52:12,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654463621] [2021-11-04 05:52:12,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:52:12,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:52:12,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:52:12,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:52:12,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:52:12,244 INFO L87 Difference]: Start difference. First operand 40944 states and 62808 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:52:14,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:52:29,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:52:43,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:52:49,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:52:51,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:52:56,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:53:12,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:53:18,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:53:20,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:53:23,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:53:27,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:53:29,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:53:29,272 INFO L93 Difference]: Finished difference Result 81347 states and 124827 transitions. [2021-11-04 05:53:29,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:53:29,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2021-11-04 05:53:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:53:29,508 INFO L225 Difference]: With dead ends: 81347 [2021-11-04 05:53:29,508 INFO L226 Difference]: Without dead ends: 81325 [2021-11-04 05:53:29,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:53:29,556 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 5787 mSDsluCounter, 5955 mSDsCounter, 0 mSdLazyCounter, 11800 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70741.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5789 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 11808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11800 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75661.42ms IncrementalHoareTripleChecker+Time [2021-11-04 05:53:29,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5789 Valid, 401 Invalid, 11808 Unknown, 0 Unchecked, 55.88ms Time], IncrementalHoareTripleChecker [0 Valid, 11800 Invalid, 8 Unknown, 0 Unchecked, 75661.42ms Time] [2021-11-04 05:53:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81325 states. [2021-11-04 05:53:30,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81325 to 81325. [2021-11-04 05:53:31,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81325 states, 79087 states have (on average 1.5339562759998482) internal successors, (121316), 79522 states have internal predecessors, (121316), 1709 states have call successors, (1709), 528 states have call predecessors, (1709), 528 states have return successors, (1768), 1665 states have call predecessors, (1768), 1709 states have call successors, (1768) [2021-11-04 05:53:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81325 states to 81325 states and 124793 transitions. [2021-11-04 05:53:31,561 INFO L78 Accepts]: Start accepts. Automaton has 81325 states and 124793 transitions. Word has length 320 [2021-11-04 05:53:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:53:31,562 INFO L470 AbstractCegarLoop]: Abstraction has 81325 states and 124793 transitions. [2021-11-04 05:53:31,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:53:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 81325 states and 124793 transitions. [2021-11-04 05:53:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-04 05:53:31,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:53:31,691 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:53:31,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 05:53:31,691 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 05:53:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:53:31,692 INFO L85 PathProgramCache]: Analyzing trace with hash -403303329, now seen corresponding path program 1 times [2021-11-04 05:53:31,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:53:31,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703603312] [2021-11-04 05:53:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:53:31,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:53:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:53:32,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-11-04 05:53:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:53:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-04 05:53:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:53:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-11-04 05:53:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:53:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-04 05:53:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:53:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-04 05:53:32,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:53:32,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703603312] [2021-11-04 05:53:32,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703603312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:53:32,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:53:32,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 05:53:32,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69230779] [2021-11-04 05:53:32,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:53:32,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 05:53:32,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:53:32,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 05:53:32,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 05:53:32,310 INFO L87 Difference]: Start difference. First operand 81325 states and 124793 transitions. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 3 states have internal predecessors, (393), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-04 05:53:34,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:53:45,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:54:07,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:54:15,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:54:18,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:54:21,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:54:41,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:54:50,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:54:55,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:54:57,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:55:01,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:55:02,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:55:04,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:55:08,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:55:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:55:17,487 INFO L93 Difference]: Finished difference Result 164082 states and 252247 transitions. [2021-11-04 05:55:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 05:55:17,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 3 states have internal predecessors, (393), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 407 [2021-11-04 05:55:17,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:55:17,771 INFO L225 Difference]: With dead ends: 164082 [2021-11-04 05:55:17,772 INFO L226 Difference]: Without dead ends: 82965 [2021-11-04 05:55:17,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.59ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 05:55:17,879 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 411 mSDsluCounter, 10013 mSDsCounter, 0 mSdLazyCounter, 17603 mSolverCounterSat, 155 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97263.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 17767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.44ms SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 17603 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103219.93ms IncrementalHoareTripleChecker+Time [2021-11-04 05:55:17,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 358 Invalid, 17767 Unknown, 0 Unchecked, 120.44ms Time], IncrementalHoareTripleChecker [155 Valid, 17603 Invalid, 9 Unknown, 0 Unchecked, 103219.93ms Time] [2021-11-04 05:55:17,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82965 states. [2021-11-04 05:55:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82965 to 80607. [2021-11-04 05:55:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80607 states, 78274 states have (on average 1.5196489255691545) internal successors, (118949), 78748 states have internal predecessors, (118949), 1725 states have call successors, (1725), 528 states have call predecessors, (1725), 607 states have return successors, (2175), 1737 states have call predecessors, (2175), 1725 states have call successors, (2175) [2021-11-04 05:55:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80607 states to 80607 states and 122849 transitions. [2021-11-04 05:55:19,634 INFO L78 Accepts]: Start accepts. Automaton has 80607 states and 122849 transitions. Word has length 407 [2021-11-04 05:55:19,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:55:19,636 INFO L470 AbstractCegarLoop]: Abstraction has 80607 states and 122849 transitions. [2021-11-04 05:55:19,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 3 states have internal predecessors, (393), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-04 05:55:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 80607 states and 122849 transitions. [2021-11-04 05:55:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-04 05:55:19,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:55:19,874 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:55:19,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 05:55:19,875 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 05:55:19,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:55:19,875 INFO L85 PathProgramCache]: Analyzing trace with hash -220159025, now seen corresponding path program 1 times [2021-11-04 05:55:19,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:55:19,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870515197] [2021-11-04 05:55:19,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:55:19,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:55:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:55:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-11-04 05:55:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:55:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-04 05:55:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:55:20,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-11-04 05:55:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:55:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-04 05:55:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:55:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-04 05:55:20,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:55:20,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870515197] [2021-11-04 05:55:20,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870515197] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 05:55:20,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117335852] [2021-11-04 05:55:20,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:55:20,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 05:55:20,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 05:55:20,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 05:55:20,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 05:55:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:55:22,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 8369 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 05:55:22,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 05:55:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-04 05:55:23,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 05:55:23,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117335852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:55:23,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 05:55:23,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-04 05:55:23,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484781882] [2021-11-04 05:55:23,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:55:23,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:55:23,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:55:23,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:55:23,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-04 05:55:23,223 INFO L87 Difference]: Start difference. First operand 80607 states and 122849 transitions. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-04 05:55:25,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:55:44,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:55:46,041 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:56:03,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:56:10,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:56:14,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:56:16,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:56:18,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:56:23,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:56:26,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:56:29,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:56:29,312 INFO L93 Difference]: Finished difference Result 159746 states and 242707 transitions. [2021-11-04 05:56:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:56:29,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 409 [2021-11-04 05:56:29,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:56:29,489 INFO L225 Difference]: With dead ends: 159746 [2021-11-04 05:56:29,489 INFO L226 Difference]: Without dead ends: 79347 [2021-11-04 05:56:29,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.39ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-04 05:56:29,740 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 5755 mSDsCounter, 0 mSdLazyCounter, 11375 mSolverCounterSat, 82 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60667.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 11462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.41ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 11375 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64723.77ms IncrementalHoareTripleChecker+Time [2021-11-04 05:56:29,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 320 Invalid, 11462 Unknown, 0 Unchecked, 50.41ms Time], IncrementalHoareTripleChecker [82 Valid, 11375 Invalid, 5 Unknown, 0 Unchecked, 64723.77ms Time] [2021-11-04 05:56:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79347 states. [2021-11-04 05:56:30,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79347 to 79095. [2021-11-04 05:56:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79095 states, 76762 states have (on average 1.5003387092571845) internal successors, (115169), 77236 states have internal predecessors, (115169), 1725 states have call successors, (1725), 528 states have call predecessors, (1725), 607 states have return successors, (2175), 1737 states have call predecessors, (2175), 1725 states have call successors, (2175) [2021-11-04 05:56:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79095 states to 79095 states and 119069 transitions. [2021-11-04 05:56:31,126 INFO L78 Accepts]: Start accepts. Automaton has 79095 states and 119069 transitions. Word has length 409 [2021-11-04 05:56:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:56:31,127 INFO L470 AbstractCegarLoop]: Abstraction has 79095 states and 119069 transitions. [2021-11-04 05:56:31,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-04 05:56:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 79095 states and 119069 transitions. [2021-11-04 05:56:31,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-04 05:56:31,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:56:31,211 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:56:31,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 05:56:31,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-04 05:56:31,431 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-04 05:56:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:56:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1267795393, now seen corresponding path program 1 times [2021-11-04 05:56:31,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:56:31,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314480136] [2021-11-04 05:56:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:56:31,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:56:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:56:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-11-04 05:56:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:56:32,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-04 05:56:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:56:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-11-04 05:56:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:56:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-04 05:56:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:56:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-04 05:56:32,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:56:32,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314480136] [2021-11-04 05:56:32,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314480136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 05:56:32,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101995426] [2021-11-04 05:56:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:56:32,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 05:56:32,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 05:56:32,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 05:56:32,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 05:56:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:56:33,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 8373 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 05:56:33,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 05:56:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-04 05:56:34,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 05:56:34,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101995426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:56:34,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 05:56:34,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-04 05:56:34,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436974489] [2021-11-04 05:56:34,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:56:34,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:56:34,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:56:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:56:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-04 05:56:34,720 INFO L87 Difference]: Start difference. First operand 79095 states and 119069 transitions. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-04 05:56:36,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:56:43,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:56:56,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:57:02,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:57:12,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:57:18,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:57:21,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:57:24,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:57:27,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:57:30,973 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15