./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.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 4e983f35cff7a0c67962e23f6c3d66292f25c728e4d1df204c975f306d1512a3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:17:00,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:17:00,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:17:00,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:17:00,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:17:00,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:17:00,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:17:00,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:17:00,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:17:00,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:17:00,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:17:00,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:17:00,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:17:00,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:17:00,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:17:00,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:17:00,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:17:00,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:17:00,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:17:00,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:17:00,177 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:17:00,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:17:00,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:17:00,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:17:00,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:17:00,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:17:00,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:17:00,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:17:00,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:17:00,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:17:00,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:17:00,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:17:00,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:17:00,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:17:00,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:17:00,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:17:00,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:17:00,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:17:00,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:17:00,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:17:00,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:17:00,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:17:00,198 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:17:00,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:17:00,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:17:00,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:17:00,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:17:00,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:17:00,234 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:17:00,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:17:00,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:17:00,235 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:17:00,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:17:00,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:17:00,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:17:00,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:17:00,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:17:00,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:17:00,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:17:00,237 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:17:00,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:17:00,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:17:00,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:17:00,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:17:00,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:17:00,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:17:00,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:17:00,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:17:00,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:17:00,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:17:00,239 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:17:00,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:17:00,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:17:00,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e983f35cff7a0c67962e23f6c3d66292f25c728e4d1df204c975f306d1512a3 [2022-07-14 00:17:00,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:17:00,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:17:00,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:17:00,467 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:17:00,468 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:17:00,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2022-07-14 00:17:00,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c34ad58/9a1272dfe11e4778808c8704552039ce/FLAGf17ccd358 [2022-07-14 00:17:01,206 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:17:01,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2022-07-14 00:17:01,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c34ad58/9a1272dfe11e4778808c8704552039ce/FLAGf17ccd358 [2022-07-14 00:17:01,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c34ad58/9a1272dfe11e4778808c8704552039ce [2022-07-14 00:17:01,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:17:01,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:17:01,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:17:01,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:17:01,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:17:01,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:17:01" (1/1) ... [2022-07-14 00:17:01,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eaaf8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:01, skipping insertion in model container [2022-07-14 00:17:01,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:17:01" (1/1) ... [2022-07-14 00:17:01,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:17:01,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:17:02,017 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2022-07-14 00:17:02,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:17:02,273 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:17:02,386 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2022-07-14 00:17:02,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:17:02,495 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:17:02,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02 WrapperNode [2022-07-14 00:17:02,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:17:02,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:17:02,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:17:02,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:17:02,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02" (1/1) ... [2022-07-14 00:17:02,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02" (1/1) ... [2022-07-14 00:17:02,621 INFO L137 Inliner]: procedures = 102, calls = 315, calls flagged for inlining = 35, calls inlined = 32, statements flattened = 987 [2022-07-14 00:17:02,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:17:02,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:17:02,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:17:02,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:17:02,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02" (1/1) ... [2022-07-14 00:17:02,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02" (1/1) ... [2022-07-14 00:17:02,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02" (1/1) ... [2022-07-14 00:17:02,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02" (1/1) ... [2022-07-14 00:17:02,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02" (1/1) ... [2022-07-14 00:17:02,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02" (1/1) ... [2022-07-14 00:17:02,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02" (1/1) ... [2022-07-14 00:17:02,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:17:02,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:17:02,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:17:02,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:17:02,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02" (1/1) ... [2022-07-14 00:17:02,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:17:02,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:17:02,837 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) [2022-07-14 00:17:02,845 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 [2022-07-14 00:17:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-14 00:17:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 00:17:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 00:17:02,872 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-14 00:17:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-14 00:17:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:17:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:17:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 00:17:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_tx_fixup [2022-07-14 00:17:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_tx_fixup [2022-07-14 00:17:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-07-14 00:17:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-07-14 00:17:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 00:17:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 00:17:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-14 00:17:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-14 00:17:02,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:17:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:17:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_rx_fixup [2022-07-14 00:17:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_rx_fixup [2022-07-14 00:17:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2022-07-14 00:17:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2022-07-14 00:17:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-14 00:17:02,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-14 00:17:02,876 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 00:17:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 00:17:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-14 00:17:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:17:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:17:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-14 00:17:02,877 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-14 00:17:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 00:17:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 00:17:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2022-07-14 00:17:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2022-07-14 00:17:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:17:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:17:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:17:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:17:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:17:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:17:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:17:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:17:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:17:02,879 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-14 00:17:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-14 00:17:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-14 00:17:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-14 00:17:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_cmd [2022-07-14 00:17:02,880 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_cmd [2022-07-14 00:17:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 00:17:02,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-14 00:17:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:17:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:17:02,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:17:02,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:17:03,189 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:17:03,191 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:17:03,291 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:17:04,515 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:17:04,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:17:04,529 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 00:17:04,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:17:04 BoogieIcfgContainer [2022-07-14 00:17:04,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:17:04,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:17:04,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:17:04,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:17:04,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:17:01" (1/3) ... [2022-07-14 00:17:04,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6101cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:17:04, skipping insertion in model container [2022-07-14 00:17:04,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:17:02" (2/3) ... [2022-07-14 00:17:04,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6101cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:17:04, skipping insertion in model container [2022-07-14 00:17:04,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:17:04" (3/3) ... [2022-07-14 00:17:04,540 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2022-07-14 00:17:04,553 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:17:04,554 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:17:04,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:17:04,630 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6b2212fe, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a021977 [2022-07-14 00:17:04,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:17:04,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 306 states, 230 states have (on average 1.4) internal successors, (322), 236 states have internal predecessors, (322), 55 states have call successors, (55), 20 states have call predecessors, (55), 19 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-14 00:17:04,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-14 00:17:04,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:04,650 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-14 00:17:04,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1372626135, now seen corresponding path program 1 times [2022-07-14 00:17:04,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:04,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844261678] [2022-07-14 00:17:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:04,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:05,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-14 00:17:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 00:17:05,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:05,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844261678] [2022-07-14 00:17:05,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844261678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:05,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:05,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:17:05,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359918967] [2022-07-14 00:17:05,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:05,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:17:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:05,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:17:05,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:17:05,238 INFO L87 Difference]: Start difference. First operand has 306 states, 230 states have (on average 1.4) internal successors, (322), 236 states have internal predecessors, (322), 55 states have call successors, (55), 20 states have call predecessors, (55), 19 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:17:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:08,034 INFO L93 Difference]: Finished difference Result 1045 states and 1591 transitions. [2022-07-14 00:17:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:17:08,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-07-14 00:17:08,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:08,065 INFO L225 Difference]: With dead ends: 1045 [2022-07-14 00:17:08,066 INFO L226 Difference]: Without dead ends: 728 [2022-07-14 00:17:08,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:17:08,078 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 843 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:08,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1234 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-14 00:17:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-07-14 00:17:08,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 553. [2022-07-14 00:17:08,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 423 states have (on average 1.375886524822695) internal successors, (582), 423 states have internal predecessors, (582), 94 states have call successors, (94), 36 states have call predecessors, (94), 35 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-14 00:17:08,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 769 transitions. [2022-07-14 00:17:08,185 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 769 transitions. Word has length 36 [2022-07-14 00:17:08,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:08,186 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 769 transitions. [2022-07-14 00:17:08,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:17:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 769 transitions. [2022-07-14 00:17:08,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-14 00:17:08,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:08,190 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-14 00:17:08,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 00:17:08,191 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2092020101, now seen corresponding path program 1 times [2022-07-14 00:17:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:08,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688311870] [2022-07-14 00:17:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:08,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:08,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:08,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-14 00:17:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:08,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:17:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:08,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-14 00:17:08,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:08,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688311870] [2022-07-14 00:17:08,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688311870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:08,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:08,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:17:08,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165609198] [2022-07-14 00:17:08,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:08,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:17:08,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:08,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:17:08,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:17:08,375 INFO L87 Difference]: Start difference. First operand 553 states and 769 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 00:17:10,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:10,423 INFO L93 Difference]: Finished difference Result 1975 states and 2881 transitions. [2022-07-14 00:17:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:17:10,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-07-14 00:17:10,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:10,433 INFO L225 Difference]: With dead ends: 1975 [2022-07-14 00:17:10,434 INFO L226 Difference]: Without dead ends: 1430 [2022-07-14 00:17:10,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:17:10,437 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 850 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:10,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 2261 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-14 00:17:10,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2022-07-14 00:17:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1163. [2022-07-14 00:17:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 897 states have (on average 1.3812709030100334) internal successors, (1239), 899 states have internal predecessors, (1239), 188 states have call successors, (188), 70 states have call predecessors, (188), 77 states have return successors, (215), 193 states have call predecessors, (215), 187 states have call successors, (215) [2022-07-14 00:17:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1642 transitions. [2022-07-14 00:17:10,516 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1642 transitions. Word has length 46 [2022-07-14 00:17:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:10,516 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1642 transitions. [2022-07-14 00:17:10,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 00:17:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1642 transitions. [2022-07-14 00:17:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-14 00:17:10,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:10,523 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-14 00:17:10,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 00:17:10,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2091695119, now seen corresponding path program 1 times [2022-07-14 00:17:10,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:10,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796318981] [2022-07-14 00:17:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:10,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-14 00:17:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:17:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-14 00:17:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-14 00:17:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796318981] [2022-07-14 00:17:10,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796318981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:10,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:10,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:17:10,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666600587] [2022-07-14 00:17:10,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:10,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:17:10,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:17:10,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:17:10,720 INFO L87 Difference]: Start difference. First operand 1163 states and 1642 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-14 00:17:12,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:12,108 INFO L93 Difference]: Finished difference Result 2875 states and 4169 transitions. [2022-07-14 00:17:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 00:17:12,108 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2022-07-14 00:17:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:12,120 INFO L225 Difference]: With dead ends: 2875 [2022-07-14 00:17:12,121 INFO L226 Difference]: Without dead ends: 1726 [2022-07-14 00:17:12,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:17:12,132 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 477 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:12,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1157 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-14 00:17:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2022-07-14 00:17:12,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1384. [2022-07-14 00:17:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1095 states have (on average 1.3990867579908677) internal successors, (1532), 1097 states have internal predecessors, (1532), 201 states have call successors, (201), 80 states have call predecessors, (201), 87 states have return successors, (228), 206 states have call predecessors, (228), 200 states have call successors, (228) [2022-07-14 00:17:12,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1961 transitions. [2022-07-14 00:17:12,217 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1961 transitions. Word has length 84 [2022-07-14 00:17:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:12,219 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 1961 transitions. [2022-07-14 00:17:12,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-14 00:17:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1961 transitions. [2022-07-14 00:17:12,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-14 00:17:12,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:12,225 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2022-07-14 00:17:12,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 00:17:12,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:12,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:12,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1899779352, now seen corresponding path program 1 times [2022-07-14 00:17:12,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:12,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184317433] [2022-07-14 00:17:12,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:12,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-14 00:17:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:17:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-14 00:17:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:17:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-14 00:17:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-14 00:17:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-14 00:17:12,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:12,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184317433] [2022-07-14 00:17:12,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184317433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:12,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:12,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 00:17:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30250205] [2022-07-14 00:17:12,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:12,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 00:17:12,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:12,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 00:17:12,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:17:12,487 INFO L87 Difference]: Start difference. First operand 1384 states and 1961 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-14 00:17:15,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:15,402 INFO L93 Difference]: Finished difference Result 4181 states and 6057 transitions. [2022-07-14 00:17:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 00:17:15,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-07-14 00:17:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:15,417 INFO L225 Difference]: With dead ends: 4181 [2022-07-14 00:17:15,417 INFO L226 Difference]: Without dead ends: 2822 [2022-07-14 00:17:15,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:17:15,423 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 767 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:15,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1697 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-14 00:17:15,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-07-14 00:17:15,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2180. [2022-07-14 00:17:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 1729 states have (on average 1.3846153846153846) internal successors, (2394), 1733 states have internal predecessors, (2394), 303 states have call successors, (303), 132 states have call predecessors, (303), 147 states have return successors, (347), 314 states have call predecessors, (347), 302 states have call successors, (347) [2022-07-14 00:17:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3044 transitions. [2022-07-14 00:17:15,547 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3044 transitions. Word has length 112 [2022-07-14 00:17:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:15,548 INFO L495 AbstractCegarLoop]: Abstraction has 2180 states and 3044 transitions. [2022-07-14 00:17:15,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-14 00:17:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3044 transitions. [2022-07-14 00:17:15,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-14 00:17:15,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:15,556 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2022-07-14 00:17:15,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 00:17:15,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:15,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash -80175978, now seen corresponding path program 1 times [2022-07-14 00:17:15,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:15,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209088109] [2022-07-14 00:17:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-14 00:17:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:17:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-14 00:17:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:17:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-14 00:17:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 00:17:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-14 00:17:15,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:15,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209088109] [2022-07-14 00:17:15,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209088109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:15,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:15,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-14 00:17:15,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388217826] [2022-07-14 00:17:15,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:15,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 00:17:15,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:15,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 00:17:15,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:17:15,913 INFO L87 Difference]: Start difference. First operand 2180 states and 3044 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-14 00:17:17,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:18,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:18,651 INFO L93 Difference]: Finished difference Result 5056 states and 7336 transitions. [2022-07-14 00:17:18,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 00:17:18,652 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) Word has length 112 [2022-07-14 00:17:18,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:18,674 INFO L225 Difference]: With dead ends: 5056 [2022-07-14 00:17:18,674 INFO L226 Difference]: Without dead ends: 2901 [2022-07-14 00:17:18,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-07-14 00:17:18,684 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 286 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:18,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 2051 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-14 00:17:18,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2022-07-14 00:17:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2232. [2022-07-14 00:17:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1765 states have (on average 1.3767705382436262) internal successors, (2430), 1777 states have internal predecessors, (2430), 303 states have call successors, (303), 132 states have call predecessors, (303), 163 states have return successors, (371), 322 states have call predecessors, (371), 302 states have call successors, (371) [2022-07-14 00:17:18,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 3104 transitions. [2022-07-14 00:17:18,804 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 3104 transitions. Word has length 112 [2022-07-14 00:17:18,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:18,805 INFO L495 AbstractCegarLoop]: Abstraction has 2232 states and 3104 transitions. [2022-07-14 00:17:18,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-14 00:17:18,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 3104 transitions. [2022-07-14 00:17:18,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-14 00:17:18,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:18,811 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2022-07-14 00:17:18,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 00:17:18,811 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:18,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:18,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1707497592, now seen corresponding path program 1 times [2022-07-14 00:17:18,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:18,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149399377] [2022-07-14 00:17:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:18,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:18,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-14 00:17:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:17:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-14 00:17:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:17:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:18,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-14 00:17:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 00:17:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:19,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-14 00:17:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-14 00:17:19,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:19,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149399377] [2022-07-14 00:17:19,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149399377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:19,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:19,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-14 00:17:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446560176] [2022-07-14 00:17:19,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:19,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 00:17:19,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:19,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 00:17:19,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:17:19,246 INFO L87 Difference]: Start difference. First operand 2232 states and 3104 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-14 00:17:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:22,232 INFO L93 Difference]: Finished difference Result 5416 states and 7968 transitions. [2022-07-14 00:17:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 00:17:22,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2022-07-14 00:17:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:22,248 INFO L225 Difference]: With dead ends: 5416 [2022-07-14 00:17:22,249 INFO L226 Difference]: Without dead ends: 3209 [2022-07-14 00:17:22,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-07-14 00:17:22,256 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 275 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:22,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 2287 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-14 00:17:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-07-14 00:17:22,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 2412. [2022-07-14 00:17:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 1877 states have (on average 1.3670751198721365) internal successors, (2566), 1893 states have internal predecessors, (2566), 359 states have call successors, (359), 132 states have call predecessors, (359), 175 states have return successors, (514), 386 states have call predecessors, (514), 358 states have call successors, (514) [2022-07-14 00:17:22,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3439 transitions. [2022-07-14 00:17:22,378 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3439 transitions. Word has length 118 [2022-07-14 00:17:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:22,378 INFO L495 AbstractCegarLoop]: Abstraction has 2412 states and 3439 transitions. [2022-07-14 00:17:22,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-14 00:17:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3439 transitions. [2022-07-14 00:17:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-14 00:17:22,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:22,383 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:17:22,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 00:17:22,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:22,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:22,384 INFO L85 PathProgramCache]: Analyzing trace with hash -916115273, now seen corresponding path program 1 times [2022-07-14 00:17:22,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:22,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075234130] [2022-07-14 00:17:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:22,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-14 00:17:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:17:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-14 00:17:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:17:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-14 00:17:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 00:17:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:17:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-14 00:17:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 00:17:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-14 00:17:22,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:22,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075234130] [2022-07-14 00:17:22,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075234130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:22,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:22,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 00:17:22,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233397767] [2022-07-14 00:17:22,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:22,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:17:22,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:22,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:17:22,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:17:22,637 INFO L87 Difference]: Start difference. First operand 2412 states and 3439 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:17:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:24,042 INFO L93 Difference]: Finished difference Result 5636 states and 8291 transitions. [2022-07-14 00:17:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 00:17:24,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 145 [2022-07-14 00:17:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:24,071 INFO L225 Difference]: With dead ends: 5636 [2022-07-14 00:17:24,072 INFO L226 Difference]: Without dead ends: 3249 [2022-07-14 00:17:24,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:17:24,085 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 373 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:24,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1254 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-14 00:17:24,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2022-07-14 00:17:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 2424. [2022-07-14 00:17:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 1889 states have (on average 1.3647432503970354) internal successors, (2578), 1905 states have internal predecessors, (2578), 359 states have call successors, (359), 132 states have call predecessors, (359), 175 states have return successors, (514), 386 states have call predecessors, (514), 358 states have call successors, (514) [2022-07-14 00:17:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3451 transitions. [2022-07-14 00:17:24,237 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3451 transitions. Word has length 145 [2022-07-14 00:17:24,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:24,238 INFO L495 AbstractCegarLoop]: Abstraction has 2424 states and 3451 transitions. [2022-07-14 00:17:24,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:17:24,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3451 transitions. [2022-07-14 00:17:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-14 00:17:24,242 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:24,242 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:17:24,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-14 00:17:24,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:24,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:24,243 INFO L85 PathProgramCache]: Analyzing trace with hash -355415495, now seen corresponding path program 1 times [2022-07-14 00:17:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:24,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060869947] [2022-07-14 00:17:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-14 00:17:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-14 00:17:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-14 00:17:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-14 00:17:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-14 00:17:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-14 00:17:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:17:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-14 00:17:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 00:17:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-14 00:17:24,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:24,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060869947] [2022-07-14 00:17:24,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060869947] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:17:24,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708350490] [2022-07-14 00:17:24,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:24,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:17:24,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:17:24,713 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) [2022-07-14 00:17:24,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-14 00:17:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:25,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 00:17:25,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-14 00:17:25,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:17:25,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708350490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:25,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 00:17:25,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2022-07-14 00:17:25,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017881115] [2022-07-14 00:17:25,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:25,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:17:25,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:17:25,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:17:25,286 INFO L87 Difference]: Start difference. First operand 2424 states and 3451 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:17:25,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:25,420 INFO L93 Difference]: Finished difference Result 4833 states and 6887 transitions. [2022-07-14 00:17:25,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:17:25,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 145 [2022-07-14 00:17:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:25,431 INFO L225 Difference]: With dead ends: 4833 [2022-07-14 00:17:25,432 INFO L226 Difference]: Without dead ends: 2425 [2022-07-14 00:17:25,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:17:25,437 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:25,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1215 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 00:17:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-07-14 00:17:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2425. [2022-07-14 00:17:25,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 1890 states have (on average 1.3645502645502645) internal successors, (2579), 1906 states have internal predecessors, (2579), 359 states have call successors, (359), 132 states have call predecessors, (359), 175 states have return successors, (514), 386 states have call predecessors, (514), 358 states have call successors, (514) [2022-07-14 00:17:25,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3452 transitions. [2022-07-14 00:17:25,548 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3452 transitions. Word has length 145 [2022-07-14 00:17:25,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:25,548 INFO L495 AbstractCegarLoop]: Abstraction has 2425 states and 3452 transitions. [2022-07-14 00:17:25,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-14 00:17:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3452 transitions. [2022-07-14 00:17:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-14 00:17:25,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:25,552 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:17:25,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:25,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:17:25,768 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:25,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash 783242525, now seen corresponding path program 1 times [2022-07-14 00:17:25,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:25,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151810935] [2022-07-14 00:17:25,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:25,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:25,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:25,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:25,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-14 00:17:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-14 00:17:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:25,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-14 00:17:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-14 00:17:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 00:17:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-14 00:17:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:17:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-14 00:17:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 00:17:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-14 00:17:26,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:26,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151810935] [2022-07-14 00:17:26,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151810935] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:17:26,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88868784] [2022-07-14 00:17:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:26,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:17:26,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:17:26,128 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) [2022-07-14 00:17:26,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-14 00:17:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:26,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 00:17:26,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-14 00:17:26,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:17:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-14 00:17:26,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88868784] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:17:26,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 00:17:26,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2022-07-14 00:17:26,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147885523] [2022-07-14 00:17:26,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 00:17:26,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 00:17:26,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:26,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 00:17:26,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-14 00:17:26,987 INFO L87 Difference]: Start difference. First operand 2425 states and 3452 transitions. Second operand has 15 states, 15 states have (on average 10.266666666666667) internal successors, (154), 10 states have internal predecessors, (154), 2 states have call successors, (42), 7 states have call predecessors, (42), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:17:29,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:29,876 INFO L93 Difference]: Finished difference Result 5661 states and 8264 transitions. [2022-07-14 00:17:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 00:17:29,876 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.266666666666667) internal successors, (154), 10 states have internal predecessors, (154), 2 states have call successors, (42), 7 states have call predecessors, (42), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 147 [2022-07-14 00:17:29,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:29,891 INFO L225 Difference]: With dead ends: 5661 [2022-07-14 00:17:29,891 INFO L226 Difference]: Without dead ends: 3250 [2022-07-14 00:17:29,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 311 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-07-14 00:17:29,897 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 283 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:29,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 2982 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-14 00:17:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2022-07-14 00:17:30,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2428. [2022-07-14 00:17:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 1893 states have (on average 1.363972530375066) internal successors, (2582), 1909 states have internal predecessors, (2582), 359 states have call successors, (359), 132 states have call predecessors, (359), 175 states have return successors, (514), 386 states have call predecessors, (514), 358 states have call successors, (514) [2022-07-14 00:17:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3455 transitions. [2022-07-14 00:17:30,016 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3455 transitions. Word has length 147 [2022-07-14 00:17:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:30,016 INFO L495 AbstractCegarLoop]: Abstraction has 2428 states and 3455 transitions. [2022-07-14 00:17:30,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.266666666666667) internal successors, (154), 10 states have internal predecessors, (154), 2 states have call successors, (42), 7 states have call predecessors, (42), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-14 00:17:30,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3455 transitions. [2022-07-14 00:17:30,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-14 00:17:30,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:30,020 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:17:30,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-14 00:17:30,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-14 00:17:30,242 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:30,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:30,242 INFO L85 PathProgramCache]: Analyzing trace with hash -672213703, now seen corresponding path program 2 times [2022-07-14 00:17:30,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:30,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092208957] [2022-07-14 00:17:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:30,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:17:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:17:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-14 00:17:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 00:17:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:17:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:17:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:17:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-14 00:17:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:30,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:31,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 00:17:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-14 00:17:31,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:31,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092208957] [2022-07-14 00:17:31,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092208957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:31,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:31,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-14 00:17:31,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575835246] [2022-07-14 00:17:31,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:31,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-14 00:17:31,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:31,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-14 00:17:31,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2022-07-14 00:17:31,310 INFO L87 Difference]: Start difference. First operand 2428 states and 3455 transitions. Second operand has 21 states, 20 states have (on average 4.7) internal successors, (94), 12 states have internal predecessors, (94), 4 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (15), 7 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-14 00:17:35,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:35,411 INFO L93 Difference]: Finished difference Result 5909 states and 8830 transitions. [2022-07-14 00:17:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-14 00:17:35,411 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 12 states have internal predecessors, (94), 4 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (15), 7 states have call predecessors, (15), 3 states have call successors, (15) Word has length 153 [2022-07-14 00:17:35,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:35,430 INFO L225 Difference]: With dead ends: 5909 [2022-07-14 00:17:35,430 INFO L226 Difference]: Without dead ends: 3510 [2022-07-14 00:17:35,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-07-14 00:17:35,438 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 321 mSDsluCounter, 5474 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 5937 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:35,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 5937 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-14 00:17:35,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3510 states. [2022-07-14 00:17:35,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3510 to 2452. [2022-07-14 00:17:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 1913 states have (on average 1.3538944066910612) internal successors, (2590), 1921 states have internal predecessors, (2590), 363 states have call successors, (363), 132 states have call predecessors, (363), 175 states have return successors, (522), 398 states have call predecessors, (522), 362 states have call successors, (522) [2022-07-14 00:17:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3475 transitions. [2022-07-14 00:17:35,634 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3475 transitions. Word has length 153 [2022-07-14 00:17:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:35,635 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 3475 transitions. [2022-07-14 00:17:35,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 12 states have internal predecessors, (94), 4 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (15), 7 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-14 00:17:35,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3475 transitions. [2022-07-14 00:17:35,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-14 00:17:35,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:35,641 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 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] [2022-07-14 00:17:35,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-14 00:17:35,641 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:35,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash 728737592, now seen corresponding path program 1 times [2022-07-14 00:17:35,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:35,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143243326] [2022-07-14 00:17:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:35,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:35,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:35,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:17:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:35,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:17:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:35,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-14 00:17:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:35,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 00:17:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:35,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:17:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:35,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:17:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:35,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 00:17:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-14 00:17:36,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:36,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143243326] [2022-07-14 00:17:36,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143243326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:36,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:36,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-14 00:17:36,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143909124] [2022-07-14 00:17:36,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:36,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-14 00:17:36,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:36,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-14 00:17:36,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-14 00:17:36,343 INFO L87 Difference]: Start difference. First operand 2452 states and 3475 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-14 00:17:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:41,309 INFO L93 Difference]: Finished difference Result 5821 states and 8506 transitions. [2022-07-14 00:17:41,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-14 00:17:41,310 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-07-14 00:17:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:41,340 INFO L225 Difference]: With dead ends: 5821 [2022-07-14 00:17:41,340 INFO L226 Difference]: Without dead ends: 3398 [2022-07-14 00:17:41,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2022-07-14 00:17:41,351 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 244 mSDsluCounter, 5228 mSDsCounter, 0 mSdLazyCounter, 2976 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 5704 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:41,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 5704 Invalid, 3128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2976 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-14 00:17:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2022-07-14 00:17:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 2468. [2022-07-14 00:17:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 1929 states have (on average 1.3509590461378953) internal successors, (2606), 1929 states have internal predecessors, (2606), 363 states have call successors, (363), 132 states have call predecessors, (363), 175 states have return successors, (522), 406 states have call predecessors, (522), 362 states have call successors, (522) [2022-07-14 00:17:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3491 transitions. [2022-07-14 00:17:41,610 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3491 transitions. Word has length 133 [2022-07-14 00:17:41,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:41,611 INFO L495 AbstractCegarLoop]: Abstraction has 2468 states and 3491 transitions. [2022-07-14 00:17:41,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-14 00:17:41,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3491 transitions. [2022-07-14 00:17:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-14 00:17:41,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:41,618 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:17:41,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-14 00:17:41,619 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:41,619 INFO L85 PathProgramCache]: Analyzing trace with hash -900196334, now seen corresponding path program 1 times [2022-07-14 00:17:41,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:41,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080649842] [2022-07-14 00:17:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:41,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:41,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:41,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:17:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:41,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:17:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-14 00:17:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 00:17:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:17:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:17:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-14 00:17:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-14 00:17:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 00:17:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-14 00:17:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-14 00:17:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-14 00:17:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:17:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-14 00:17:42,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:42,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080649842] [2022-07-14 00:17:42,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080649842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:17:42,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:17:42,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 00:17:42,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542586629] [2022-07-14 00:17:42,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:17:42,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 00:17:42,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:17:42,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 00:17:42,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:17:42,246 INFO L87 Difference]: Start difference. First operand 2468 states and 3491 transitions. Second operand has 11 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-14 00:17:43,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:17:48,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:17:48,015 INFO L93 Difference]: Finished difference Result 7213 states and 11094 transitions. [2022-07-14 00:17:48,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 00:17:48,016 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 183 [2022-07-14 00:17:48,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:17:48,086 INFO L225 Difference]: With dead ends: 7213 [2022-07-14 00:17:48,092 INFO L226 Difference]: Without dead ends: 4774 [2022-07-14 00:17:48,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-14 00:17:48,177 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 360 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 2245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:17:48,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 3286 Invalid, 2245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-14 00:17:48,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4774 states. [2022-07-14 00:17:48,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4774 to 2844. [2022-07-14 00:17:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2217 states have (on average 1.363103292737934) internal successors, (3022), 2217 states have internal predecessors, (3022), 443 states have call successors, (443), 132 states have call predecessors, (443), 183 states have return successors, (722), 494 states have call predecessors, (722), 442 states have call successors, (722) [2022-07-14 00:17:48,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4187 transitions. [2022-07-14 00:17:48,588 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4187 transitions. Word has length 183 [2022-07-14 00:17:48,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:17:48,589 INFO L495 AbstractCegarLoop]: Abstraction has 2844 states and 4187 transitions. [2022-07-14 00:17:48,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-14 00:17:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4187 transitions. [2022-07-14 00:17:48,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-14 00:17:48,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:17:48,600 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:17:48,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-14 00:17:48,601 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:17:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:17:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash 536068470, now seen corresponding path program 1 times [2022-07-14 00:17:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:17:48,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246961470] [2022-07-14 00:17:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:48,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:17:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:17:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:48,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:17:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:48,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:17:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:17:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-14 00:17:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 00:17:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:17:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:17:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-14 00:17:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:49,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-14 00:17:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:50,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:50,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:17:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:50,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 00:17:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:50,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:17:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-14 00:17:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:50,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-14 00:17:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:51,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-14 00:17:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:17:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-14 00:17:51,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:17:51,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246961470] [2022-07-14 00:17:51,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246961470] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:17:51,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947812340] [2022-07-14 00:17:51,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:17:51,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:17:51,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:17:51,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:17:51,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-14 00:17:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:17:51,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-14 00:17:51,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:17:57,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 00:18:12,103 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-14 00:18:12,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-14 00:18:16,431 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-07-14 00:18:16,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 36 [2022-07-14 00:18:16,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-07-14 00:18:16,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-07-14 00:18:18,871 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-14 00:18:18,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 31 [2022-07-14 00:18:19,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-07-14 00:18:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-14 00:18:19,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:18:19,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 309 [2022-07-14 00:18:19,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 286 [2022-07-14 00:18:20,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 278 [2022-07-14 00:18:20,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 246 [2022-07-14 00:18:20,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947812340] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:18:20,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 00:18:20,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 27] total 63 [2022-07-14 00:18:20,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518252910] [2022-07-14 00:18:20,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 00:18:20,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-07-14 00:18:20,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:18:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-07-14 00:18:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=4319, Unknown=47, NotChecked=0, Total=4692 [2022-07-14 00:18:20,828 INFO L87 Difference]: Start difference. First operand 2844 states and 4187 transitions. Second operand has 63 states, 63 states have (on average 3.4761904761904763) internal successors, (219), 49 states have internal predecessors, (219), 22 states have call successors, (40), 11 states have call predecessors, (40), 18 states have return successors, (39), 26 states have call predecessors, (39), 21 states have call successors, (39) [2022-07-14 00:18:25,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:27,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:30,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:31,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:33,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:35,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:37,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:39,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:18:42,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:19:48,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:19:48,308 INFO L93 Difference]: Finished difference Result 23071 states and 36016 transitions. [2022-07-14 00:19:48,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-07-14 00:19:48,309 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.4761904761904763) internal successors, (219), 49 states have internal predecessors, (219), 22 states have call successors, (40), 11 states have call predecessors, (40), 18 states have return successors, (39), 26 states have call predecessors, (39), 21 states have call successors, (39) Word has length 184 [2022-07-14 00:19:48,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:19:48,410 INFO L225 Difference]: With dead ends: 23071 [2022-07-14 00:19:48,410 INFO L226 Difference]: Without dead ends: 20190 [2022-07-14 00:19:48,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 276 SyntacticMatches, 5 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22736 ImplicationChecksByTransitivity, 70.5s TimeCoverageRelationStatistics Valid=3779, Invalid=57855, Unknown=118, NotChecked=0, Total=61752 [2022-07-14 00:19:48,441 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 4350 mSDsluCounter, 13718 mSDsCounter, 0 mSdLazyCounter, 21970 mSolverCounterSat, 2473 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 14471 SdHoareTripleChecker+Invalid, 29272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2473 IncrementalHoareTripleChecker+Valid, 21970 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 4827 IncrementalHoareTripleChecker+Unchecked, 42.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:19:48,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 14471 Invalid, 29272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2473 Valid, 21970 Invalid, 2 Unknown, 4827 Unchecked, 42.7s Time] [2022-07-14 00:19:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20190 states. [2022-07-14 00:19:49,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20190 to 15836. [2022-07-14 00:19:49,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15836 states, 12394 states have (on average 1.3759076972728739) internal successors, (17053), 12522 states have internal predecessors, (17053), 2440 states have call successors, (2440), 624 states have call predecessors, (2440), 1001 states have return successors, (5208), 2689 states have call predecessors, (5208), 2439 states have call successors, (5208) [2022-07-14 00:19:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15836 states to 15836 states and 24701 transitions. [2022-07-14 00:19:49,836 INFO L78 Accepts]: Start accepts. Automaton has 15836 states and 24701 transitions. Word has length 184 [2022-07-14 00:19:49,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:19:49,836 INFO L495 AbstractCegarLoop]: Abstraction has 15836 states and 24701 transitions. [2022-07-14 00:19:49,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.4761904761904763) internal successors, (219), 49 states have internal predecessors, (219), 22 states have call successors, (40), 11 states have call predecessors, (40), 18 states have return successors, (39), 26 states have call predecessors, (39), 21 states have call successors, (39) [2022-07-14 00:19:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 15836 states and 24701 transitions. [2022-07-14 00:19:49,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-14 00:19:49,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:19:49,885 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:19:49,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-14 00:19:50,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:19:50,112 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:19:50,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:19:50,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1288410356, now seen corresponding path program 1 times [2022-07-14 00:19:50,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:19:50,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571840968] [2022-07-14 00:19:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:19:50,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:19:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:19:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:19:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:19:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:19:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-14 00:19:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 00:19:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:19:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:19:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:19:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:19:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:51,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:19:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:19:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:51,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 00:19:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-14 00:19:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:19:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:51,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:19:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:51,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-14 00:19:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:51,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-14 00:19:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:51,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:19:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-14 00:19:51,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:19:51,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571840968] [2022-07-14 00:19:51,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571840968] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:19:51,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312219626] [2022-07-14 00:19:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:19:51,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:19:51,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:19:51,872 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 00:19:51,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-14 00:19:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:19:52,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-14 00:19:52,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:19:53,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-14 00:19:53,970 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-14 00:19:53,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-14 00:19:54,258 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-07-14 00:19:54,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 37 [2022-07-14 00:19:54,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-14 00:19:54,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-14 00:19:54,629 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-14 00:19:54,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 32 [2022-07-14 00:19:55,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2022-07-14 00:19:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 59 proven. 15 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-14 00:19:55,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:19:55,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 326 treesize of output 308 [2022-07-14 00:19:55,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 270 [2022-07-14 00:19:55,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 254 [2022-07-14 00:19:55,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 254 treesize of output 246 [2022-07-14 00:19:56,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312219626] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 00:19:56,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 00:19:56,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 31] total 65 [2022-07-14 00:19:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518557558] [2022-07-14 00:19:56,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 00:19:56,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-07-14 00:19:56,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:19:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-07-14 00:19:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=4701, Unknown=24, NotChecked=0, Total=5112 [2022-07-14 00:19:56,298 INFO L87 Difference]: Start difference. First operand 15836 states and 24701 transitions. Second operand has 65 states, 61 states have (on average 3.377049180327869) internal successors, (206), 51 states have internal predecessors, (206), 23 states have call successors, (39), 11 states have call predecessors, (39), 21 states have return successors, (38), 24 states have call predecessors, (38), 22 states have call successors, (38) [2022-07-14 00:20:03,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:20:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:20:40,978 INFO L93 Difference]: Finished difference Result 87483 states and 143087 transitions. [2022-07-14 00:20:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-07-14 00:20:40,979 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 61 states have (on average 3.377049180327869) internal successors, (206), 51 states have internal predecessors, (206), 23 states have call successors, (39), 11 states have call predecessors, (39), 21 states have return successors, (38), 24 states have call predecessors, (38), 22 states have call successors, (38) Word has length 169 [2022-07-14 00:20:40,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:20:41,437 INFO L225 Difference]: With dead ends: 87483 [2022-07-14 00:20:41,437 INFO L226 Difference]: Without dead ends: 69905 [2022-07-14 00:20:41,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13009 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=2788, Invalid=36165, Unknown=53, NotChecked=0, Total=39006 [2022-07-14 00:20:41,589 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 4605 mSDsluCounter, 11662 mSDsCounter, 0 mSdLazyCounter, 22863 mSolverCounterSat, 2967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4915 SdHoareTripleChecker+Valid, 12374 SdHoareTripleChecker+Invalid, 28955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2967 IncrementalHoareTripleChecker+Valid, 22863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3125 IncrementalHoareTripleChecker+Unchecked, 31.9s IncrementalHoareTripleChecker+Time [2022-07-14 00:20:41,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4915 Valid, 12374 Invalid, 28955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2967 Valid, 22863 Invalid, 0 Unknown, 3125 Unchecked, 31.9s Time] [2022-07-14 00:20:41,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69905 states. [2022-07-14 00:20:46,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69905 to 48778. [2022-07-14 00:20:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48778 states, 37864 states have (on average 1.371540249313332) internal successors, (51932), 38059 states have internal predecessors, (51932), 8131 states have call successors, (8131), 1999 states have call predecessors, (8131), 2782 states have return successors, (16717), 8719 states have call predecessors, (16717), 8130 states have call successors, (16717) [2022-07-14 00:20:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48778 states to 48778 states and 76780 transitions. [2022-07-14 00:20:46,431 INFO L78 Accepts]: Start accepts. Automaton has 48778 states and 76780 transitions. Word has length 169 [2022-07-14 00:20:46,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:20:46,433 INFO L495 AbstractCegarLoop]: Abstraction has 48778 states and 76780 transitions. [2022-07-14 00:20:46,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 61 states have (on average 3.377049180327869) internal successors, (206), 51 states have internal predecessors, (206), 23 states have call successors, (39), 11 states have call predecessors, (39), 21 states have return successors, (38), 24 states have call predecessors, (38), 22 states have call successors, (38) [2022-07-14 00:20:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 48778 states and 76780 transitions. [2022-07-14 00:20:46,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-14 00:20:46,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:20:46,515 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:20:46,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-14 00:20:46,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 00:20:46,735 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:20:46,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:20:46,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1920505852, now seen corresponding path program 1 times [2022-07-14 00:20:46,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:20:46,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541298018] [2022-07-14 00:20:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:20:46,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 00:20:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:46,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:20:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:46,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-14 00:20:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:46,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-14 00:20:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:46,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-14 00:20:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:46,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-14 00:20:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-14 00:20:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:46,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-14 00:20:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-14 00:20:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-14 00:20:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:20:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:20:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 00:20:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-14 00:20:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-14 00:20:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 00:20:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-14 00:20:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-14 00:20:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-14 00:20:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-14 00:20:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:20:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-14 00:20:47,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 00:20:47,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541298018] [2022-07-14 00:20:47,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541298018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:20:47,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:20:47,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-14 00:20:47,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784884855] [2022-07-14 00:20:47,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:20:47,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 00:20:47,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 00:20:47,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 00:20:47,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-14 00:20:47,105 INFO L87 Difference]: Start difference. First operand 48778 states and 76780 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-14 00:20:56,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:20:56,582 INFO L93 Difference]: Finished difference Result 108906 states and 175662 transitions. [2022-07-14 00:20:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 00:20:56,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2022-07-14 00:20:56,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:20:57,352 INFO L225 Difference]: With dead ends: 108906 [2022-07-14 00:20:57,352 INFO L226 Difference]: Without dead ends: 60174 [2022-07-14 00:20:57,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-14 00:20:57,543 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 296 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:20:57,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 1685 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-14 00:20:57,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60174 states. [2022-07-14 00:21:02,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60174 to 49108. [2022-07-14 00:21:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49108 states, 38130 states have (on average 1.3707317073170733) internal successors, (52266), 38337 states have internal predecessors, (52266), 8195 states have call successors, (8195), 1999 states have call predecessors, (8195), 2782 states have return successors, (16849), 8771 states have call predecessors, (16849), 8194 states have call successors, (16849) [2022-07-14 00:21:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49108 states to 49108 states and 77310 transitions. [2022-07-14 00:21:02,620 INFO L78 Accepts]: Start accepts. Automaton has 49108 states and 77310 transitions. Word has length 170 [2022-07-14 00:21:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:21:02,623 INFO L495 AbstractCegarLoop]: Abstraction has 49108 states and 77310 transitions. [2022-07-14 00:21:02,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-14 00:21:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 49108 states and 77310 transitions. [2022-07-14 00:21:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-14 00:21:02,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:21:02,697 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:21:02,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-14 00:21:02,697 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:21:02,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:21:02,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1207982842, now seen corresponding path program 1 times [2022-07-14 00:21:02,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 00:21:02,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136727677] [2022-07-14 00:21:02,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:21:02,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms