./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.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 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:30:26,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:30:26,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:30:27,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:30:27,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:30:27,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:30:27,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:30:27,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:30:27,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:30:27,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:30:27,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:30:27,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:30:27,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:30:27,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:30:27,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:30:27,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:30:27,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:30:27,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:30:27,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:30:27,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:30:27,063 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:30:27,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:30:27,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:30:27,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:30:27,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:30:27,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:30:27,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:30:27,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:30:27,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:30:27,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:30:27,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:30:27,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:30:27,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:30:27,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:30:27,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:30:27,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:30:27,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:30:27,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:30:27,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:30:27,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:30:27,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:30:27,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:30:27,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:30:27,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:30:27,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:30:27,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:30:27,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:30:27,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:30:27,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:30:27,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:30:27,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:30:27,128 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:30:27,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:30:27,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:30:27,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:30:27,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:30:27,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:30:27,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:30:27,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:30:27,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:30:27,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:30:27,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:30:27,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:30:27,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:30:27,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:30:27,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:30:27,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:30:27,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:30:27,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:30:27,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:30:27,132 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:30:27,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:30:27,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:30:27,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2022-07-19 23:30:27,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:30:27,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:30:27,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:30:27,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:30:27,410 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:30:27,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-07-19 23:30:27,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0d7fdff2/458deb6fbe074011a3a2c5ce6aac1a21/FLAG15cb95396 [2022-07-19 23:30:28,139 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:30:28,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-07-19 23:30:28,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0d7fdff2/458deb6fbe074011a3a2c5ce6aac1a21/FLAG15cb95396 [2022-07-19 23:30:28,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0d7fdff2/458deb6fbe074011a3a2c5ce6aac1a21 [2022-07-19 23:30:28,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:30:28,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:30:28,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:30:28,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:30:28,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:30:28,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:30:28" (1/1) ... [2022-07-19 23:30:28,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f5fddb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:28, skipping insertion in model container [2022-07-19 23:30:28,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:30:28" (1/1) ... [2022-07-19 23:30:28,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:30:28,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:30:29,734 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2022-07-19 23:30:30,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:30:30,476 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:30:30,617 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2022-07-19 23:30:30,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:30:30,944 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:30:30,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30 WrapperNode [2022-07-19 23:30:30,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:30:30,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:30:30,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:30:30,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:30:30,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30" (1/1) ... [2022-07-19 23:30:31,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30" (1/1) ... [2022-07-19 23:30:31,261 INFO L137 Inliner]: procedures = 245, calls = 3306, calls flagged for inlining = 118, calls inlined = 118, statements flattened = 6447 [2022-07-19 23:30:31,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:30:31,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:30:31,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:30:31,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:30:31,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30" (1/1) ... [2022-07-19 23:30:31,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30" (1/1) ... [2022-07-19 23:30:31,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30" (1/1) ... [2022-07-19 23:30:31,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30" (1/1) ... [2022-07-19 23:30:31,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30" (1/1) ... [2022-07-19 23:30:31,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30" (1/1) ... [2022-07-19 23:30:31,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30" (1/1) ... [2022-07-19 23:30:31,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:30:31,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:30:31,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:30:31,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:30:31,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30" (1/1) ... [2022-07-19 23:30:31,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:30:31,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:30:31,641 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) [2022-07-19 23:30:31,667 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 [2022-07-19 23:30:31,682 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2022-07-19 23:30:31,683 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2022-07-19 23:30:31,683 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2022-07-19 23:30:31,683 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2022-07-19 23:30:31,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_18 [2022-07-19 23:30:31,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_18 [2022-07-19 23:30:31,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:30:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:30:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-19 23:30:31,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-19 23:30:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_destruct [2022-07-19 23:30:31,684 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_destruct [2022-07-19 23:30:31,684 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-07-19 23:30:31,684 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-07-19 23:30:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-19 23:30:31,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-19 23:30:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_22 [2022-07-19 23:30:31,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_22 [2022-07-19 23:30:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2022-07-19 23:30:31,685 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2022-07-19 23:30:31,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:30:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:30:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-19 23:30:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-19 23:30:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-19 23:30:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-19 23:30:31,686 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2022-07-19 23:30:31,686 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2022-07-19 23:30:31,687 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 23:30:31,687 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 23:30:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:30:31,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:30:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-07-19 23:30:31,688 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-07-19 23:30:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-19 23:30:31,689 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-19 23:30:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 23:30:31,689 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 23:30:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 23:30:31,689 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 23:30:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-19 23:30:31,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-19 23:30:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-19 23:30:31,690 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-19 23:30:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2022-07-19 23:30:31,690 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2022-07-19 23:30:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2022-07-19 23:30:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2022-07-19 23:30:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2022-07-19 23:30:31,691 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2022-07-19 23:30:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:30:31,691 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-19 23:30:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2022-07-19 23:30:31,692 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2022-07-19 23:30:31,692 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-07-19 23:30:31,693 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-07-19 23:30:31,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:30:31,693 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2022-07-19 23:30:31,694 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2022-07-19 23:30:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-07-19 23:30:31,694 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-07-19 23:30:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-19 23:30:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-19 23:30:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-19 23:30:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-07-19 23:30:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-07-19 23:30:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:30:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:30:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-19 23:30:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-19 23:30:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-19 23:30:31,696 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-19 23:30:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 23:30:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 23:30:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-19 23:30:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-19 23:30:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-19 23:30:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-19 23:30:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2022-07-19 23:30:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2022-07-19 23:30:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_shutdown [2022-07-19 23:30:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_shutdown [2022-07-19 23:30:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-07-19 23:30:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-07-19 23:30:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2022-07-19 23:30:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2022-07-19 23:30:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 23:30:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-19 23:30:31,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-19 23:30:31,699 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-19 23:30:31,700 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-19 23:30:31,700 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2022-07-19 23:30:31,700 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2022-07-19 23:30:31,700 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-19 23:30:31,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-19 23:30:31,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 23:30:31,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2022-07-19 23:30:31,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2022-07-19 23:30:31,701 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2022-07-19 23:30:31,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2022-07-19 23:30:31,702 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2022-07-19 23:30:31,702 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2022-07-19 23:30:31,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 23:30:31,702 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2022-07-19 23:30:31,702 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2022-07-19 23:30:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-19 23:30:31,703 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-19 23:30:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:30:31,703 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:30:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-19 23:30:31,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-19 23:30:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2022-07-19 23:30:31,704 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2022-07-19 23:30:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2022-07-19 23:30:31,704 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2022-07-19 23:30:31,704 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-19 23:30:31,704 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-19 23:30:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-19 23:30:31,706 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-19 23:30:31,707 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2022-07-19 23:30:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2022-07-19 23:30:31,708 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2022-07-19 23:30:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2022-07-19 23:30:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:30:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:30:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 23:30:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2022-07-19 23:30:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2022-07-19 23:30:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2022-07-19 23:30:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2022-07-19 23:30:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2022-07-19 23:30:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2022-07-19 23:30:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-19 23:30:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-19 23:30:31,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:30:31,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:30:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-07-19 23:30:31,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-07-19 23:30:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2022-07-19 23:30:31,717 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2022-07-19 23:30:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:30:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2022-07-19 23:30:31,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2022-07-19 23:30:31,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:30:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-19 23:30:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-19 23:30:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:30:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_17 [2022-07-19 23:30:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_17 [2022-07-19 23:30:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:30:31,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:30:31,718 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-19 23:30:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-19 23:30:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-07-19 23:30:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-07-19 23:30:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2022-07-19 23:30:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2022-07-19 23:30:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2022-07-19 23:30:31,719 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2022-07-19 23:30:31,719 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2022-07-19 23:30:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2022-07-19 23:30:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2022-07-19 23:30:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2022-07-19 23:30:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2022-07-19 23:30:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2022-07-19 23:30:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-19 23:30:31,720 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-19 23:30:31,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-19 23:30:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-19 23:30:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 23:30:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-19 23:30:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-19 23:30:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-19 23:30:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-19 23:30:31,721 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2022-07-19 23:30:31,721 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2022-07-19 23:30:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:30:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:30:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-07-19 23:30:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-07-19 23:30:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2022-07-19 23:30:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2022-07-19 23:30:31,722 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-19 23:30:31,722 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-19 23:30:32,375 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:30:32,377 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:30:32,665 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-19 23:30:33,204 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-19 23:30:39,659 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:30:39,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:30:39,686 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:30:39,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:30:39 BoogieIcfgContainer [2022-07-19 23:30:39,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:30:39,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:30:39,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:30:39,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:30:39,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:30:28" (1/3) ... [2022-07-19 23:30:39,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7144f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:30:39, skipping insertion in model container [2022-07-19 23:30:39,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:30:30" (2/3) ... [2022-07-19 23:30:39,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7144f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:30:39, skipping insertion in model container [2022-07-19 23:30:39,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:30:39" (3/3) ... [2022-07-19 23:30:39,700 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-07-19 23:30:39,714 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:30:39,714 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:30:39,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:30:39,829 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@138671da, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65452e07 [2022-07-19 23:30:39,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:30:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 1511 states, 1082 states have (on average 1.353974121996303) internal successors, (1465), 1118 states have internal predecessors, (1465), 346 states have call successors, (346), 83 states have call predecessors, (346), 81 states have return successors, (335), 327 states have call predecessors, (335), 335 states have call successors, (335) [2022-07-19 23:30:39,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 23:30:39,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:39,874 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:30:39,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:39,881 INFO L85 PathProgramCache]: Analyzing trace with hash -732994457, now seen corresponding path program 1 times [2022-07-19 23:30:39,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:30:39,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113359887] [2022-07-19 23:30:39,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:39,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:30:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:30:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:30:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:30:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:30:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:30:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:30:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:30:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:30:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:30:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:30:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:30:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:30:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:30:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:30:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 23:30:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 23:30:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-19 23:30:40,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:30:40,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113359887] [2022-07-19 23:30:40,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113359887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:40,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:40,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:30:40,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666386125] [2022-07-19 23:30:40,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:40,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:30:40,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:30:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:30:40,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:30:40,980 INFO L87 Difference]: Start difference. First operand has 1511 states, 1082 states have (on average 1.353974121996303) internal successors, (1465), 1118 states have internal predecessors, (1465), 346 states have call successors, (346), 83 states have call predecessors, (346), 81 states have return successors, (335), 327 states have call predecessors, (335), 335 states have call successors, (335) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 23:30:44,822 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 [] [2022-07-19 23:30:46,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:30:53,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:53,311 INFO L93 Difference]: Finished difference Result 4625 states and 6784 transitions. [2022-07-19 23:30:53,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:30:53,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 117 [2022-07-19 23:30:53,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:53,357 INFO L225 Difference]: With dead ends: 4625 [2022-07-19 23:30:53,358 INFO L226 Difference]: Without dead ends: 3085 [2022-07-19 23:30:53,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:30:53,375 INFO L413 NwaCegarLoop]: 2291 mSDtfsCounter, 3058 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 1671 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3315 SdHoareTripleChecker+Valid, 5865 SdHoareTripleChecker+Invalid, 4011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:53,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3315 Valid, 5865 Invalid, 4011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1671 Valid, 2338 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-07-19 23:30:53,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2022-07-19 23:30:53,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2898. [2022-07-19 23:30:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 2099 states have (on average 1.3392091472129586) internal successors, (2811), 2140 states have internal predecessors, (2811), 638 states have call successors, (638), 161 states have call predecessors, (638), 160 states have return successors, (632), 616 states have call predecessors, (632), 632 states have call successors, (632) [2022-07-19 23:30:53,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 4081 transitions. [2022-07-19 23:30:53,674 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 4081 transitions. Word has length 117 [2022-07-19 23:30:53,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:53,676 INFO L495 AbstractCegarLoop]: Abstraction has 2898 states and 4081 transitions. [2022-07-19 23:30:53,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 23:30:53,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 4081 transitions. [2022-07-19 23:30:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 23:30:53,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:53,683 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:30:53,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 23:30:53,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:53,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:53,685 INFO L85 PathProgramCache]: Analyzing trace with hash 432030469, now seen corresponding path program 1 times [2022-07-19 23:30:53,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:30:53,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071207791] [2022-07-19 23:30:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:53,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:30:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:30:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:30:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:30:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:30:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:30:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:30:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:30:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:30:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:30:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:30:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:30:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:30:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:30:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:30:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:30:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:30:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:30:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:30:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-19 23:30:54,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:30:54,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071207791] [2022-07-19 23:30:54,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071207791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:54,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:54,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:30:54,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056229794] [2022-07-19 23:30:54,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:54,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:30:54,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:30:54,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:30:54,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:30:54,353 INFO L87 Difference]: Start difference. First operand 2898 states and 4081 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:30:57,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:31:00,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:31:02,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:31:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:11,577 INFO L93 Difference]: Finished difference Result 9211 states and 13363 transitions. [2022-07-19 23:31:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:31:11,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2022-07-19 23:31:11,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:11,626 INFO L225 Difference]: With dead ends: 9211 [2022-07-19 23:31:11,626 INFO L226 Difference]: Without dead ends: 6346 [2022-07-19 23:31:11,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:31:11,645 INFO L413 NwaCegarLoop]: 2392 mSDtfsCounter, 3190 mSDsluCounter, 4827 mSDsCounter, 0 mSdLazyCounter, 3334 mSolverCounterSat, 1780 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3440 SdHoareTripleChecker+Valid, 7219 SdHoareTripleChecker+Invalid, 5117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1780 IncrementalHoareTripleChecker+Valid, 3334 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:11,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3440 Valid, 7219 Invalid, 5117 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1780 Valid, 3334 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time] [2022-07-19 23:31:11,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2022-07-19 23:31:11,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 5859. [2022-07-19 23:31:11,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 4247 states have (on average 1.3376501059571462) internal successors, (5681), 4330 states have internal predecessors, (5681), 1273 states have call successors, (1273), 321 states have call predecessors, (1273), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2022-07-19 23:31:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8341 transitions. [2022-07-19 23:31:11,954 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8341 transitions. Word has length 129 [2022-07-19 23:31:11,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:11,955 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 8341 transitions. [2022-07-19 23:31:11,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:31:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8341 transitions. [2022-07-19 23:31:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-19 23:31:11,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:11,959 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:31:11,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 23:31:11,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:11,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:11,961 INFO L85 PathProgramCache]: Analyzing trace with hash 507342559, now seen corresponding path program 1 times [2022-07-19 23:31:11,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:31:11,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713687925] [2022-07-19 23:31:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:11,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:31:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:31:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:31:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:31:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:31:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:31:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:31:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:31:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:31:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:31:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:31:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:31:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:31:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:31:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:31:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:31:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:31:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:31:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:31:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,518 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-19 23:31:12,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:31:12,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713687925] [2022-07-19 23:31:12,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713687925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:31:12,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:31:12,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:31:12,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707658793] [2022-07-19 23:31:12,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:31:12,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:31:12,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:31:12,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:31:12,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:31:12,525 INFO L87 Difference]: Start difference. First operand 5859 states and 8341 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:31:15,994 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 [] [2022-07-19 23:31:19,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:19,408 INFO L93 Difference]: Finished difference Result 6337 states and 9175 transitions. [2022-07-19 23:31:19,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:31:19,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2022-07-19 23:31:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:19,447 INFO L225 Difference]: With dead ends: 6337 [2022-07-19 23:31:19,448 INFO L226 Difference]: Without dead ends: 6334 [2022-07-19 23:31:19,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:31:19,454 INFO L413 NwaCegarLoop]: 1976 mSDtfsCounter, 2781 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 1403 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3028 SdHoareTripleChecker+Valid, 4053 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1403 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:19,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3028 Valid, 4053 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1403 Valid, 1157 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-07-19 23:31:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6334 states. [2022-07-19 23:31:19,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6334 to 5858. [2022-07-19 23:31:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 4247 states have (on average 1.337414645632211) internal successors, (5680), 4329 states have internal predecessors, (5680), 1272 states have call successors, (1272), 321 states have call predecessors, (1272), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2022-07-19 23:31:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 8339 transitions. [2022-07-19 23:31:19,717 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 8339 transitions. Word has length 130 [2022-07-19 23:31:19,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:19,717 INFO L495 AbstractCegarLoop]: Abstraction has 5858 states and 8339 transitions. [2022-07-19 23:31:19,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:31:19,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 8339 transitions. [2022-07-19 23:31:19,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 23:31:19,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:19,721 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:31:19,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 23:31:19,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:19,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:19,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1452945080, now seen corresponding path program 1 times [2022-07-19 23:31:19,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:31:19,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049259549] [2022-07-19 23:31:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:19,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:31:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:31:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:31:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:31:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:31:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:31:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:31:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:31:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:31:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:31:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:31:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:31:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:31:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:31:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:31:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:31:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:31:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:31:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:31:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-19 23:31:20,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:31:20,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049259549] [2022-07-19 23:31:20,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049259549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:31:20,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:31:20,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:31:20,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577369683] [2022-07-19 23:31:20,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:31:20,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:31:20,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:31:20,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:31:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:31:20,167 INFO L87 Difference]: Start difference. First operand 5858 states and 8339 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:31:23,915 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 [] [2022-07-19 23:31:25,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:31:30,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:30,663 INFO L93 Difference]: Finished difference Result 6336 states and 9173 transitions. [2022-07-19 23:31:30,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:31:30,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2022-07-19 23:31:30,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:30,701 INFO L225 Difference]: With dead ends: 6336 [2022-07-19 23:31:30,702 INFO L226 Difference]: Without dead ends: 6333 [2022-07-19 23:31:30,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:31:30,708 INFO L413 NwaCegarLoop]: 1972 mSDtfsCounter, 2484 mSDsluCounter, 3017 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 1027 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 4989 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1027 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:30,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 4989 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1027 Valid, 1710 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2022-07-19 23:31:30,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2022-07-19 23:31:30,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 5857. [2022-07-19 23:31:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 4247 states have (on average 1.3371791853072756) internal successors, (5679), 4328 states have internal predecessors, (5679), 1271 states have call successors, (1271), 321 states have call predecessors, (1271), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2022-07-19 23:31:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 8337 transitions. [2022-07-19 23:31:30,983 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 8337 transitions. Word has length 131 [2022-07-19 23:31:30,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:30,985 INFO L495 AbstractCegarLoop]: Abstraction has 5857 states and 8337 transitions. [2022-07-19 23:31:30,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:31:30,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 8337 transitions. [2022-07-19 23:31:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 23:31:30,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:30,992 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:31:30,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 23:31:30,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:30,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:30,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2092314878, now seen corresponding path program 1 times [2022-07-19 23:31:30,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:31:30,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916578756] [2022-07-19 23:31:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:30,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:31:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:31:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:31:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:31:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:31:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:31:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:31:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:31:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:31:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:31:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:31:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:31:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:31:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:31:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:31:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:31:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:31:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:31:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:31:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-19 23:31:31,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:31:31,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916578756] [2022-07-19 23:31:31,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916578756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:31:31,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:31:31,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:31:31,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817235936] [2022-07-19 23:31:31,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:31:31,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:31:31,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:31:31,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:31:31,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:31:31,518 INFO L87 Difference]: Start difference. First operand 5857 states and 8337 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:31:36,641 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 [] [2022-07-19 23:31:38,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:31:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:46,025 INFO L93 Difference]: Finished difference Result 18386 states and 26825 transitions. [2022-07-19 23:31:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:31:46,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 132 [2022-07-19 23:31:46,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:46,100 INFO L225 Difference]: With dead ends: 18386 [2022-07-19 23:31:46,101 INFO L226 Difference]: Without dead ends: 12562 [2022-07-19 23:31:46,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:31:46,131 INFO L413 NwaCegarLoop]: 2479 mSDtfsCounter, 3055 mSDsluCounter, 5010 mSDsCounter, 0 mSdLazyCounter, 3267 mSolverCounterSat, 1714 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3311 SdHoareTripleChecker+Valid, 7489 SdHoareTripleChecker+Invalid, 4983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1714 IncrementalHoareTripleChecker+Valid, 3267 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:46,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3311 Valid, 7489 Invalid, 4983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1714 Valid, 3267 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2022-07-19 23:31:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12562 states. [2022-07-19 23:31:46,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12562 to 11696. [2022-07-19 23:31:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11696 states, 8493 states have (on average 1.3380430943129635) internal successors, (11364), 8663 states have internal predecessors, (11364), 2512 states have call successors, (2512), 638 states have call predecessors, (2512), 690 states have return successors, (2955), 2486 states have call predecessors, (2955), 2505 states have call successors, (2955) [2022-07-19 23:31:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11696 states to 11696 states and 16831 transitions. [2022-07-19 23:31:46,697 INFO L78 Accepts]: Start accepts. Automaton has 11696 states and 16831 transitions. Word has length 132 [2022-07-19 23:31:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:46,698 INFO L495 AbstractCegarLoop]: Abstraction has 11696 states and 16831 transitions. [2022-07-19 23:31:46,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:31:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 11696 states and 16831 transitions. [2022-07-19 23:31:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-19 23:31:46,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:46,703 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:31:46,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 23:31:46,703 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:46,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:46,704 INFO L85 PathProgramCache]: Analyzing trace with hash -437937269, now seen corresponding path program 1 times [2022-07-19 23:31:46,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:31:46,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543324323] [2022-07-19 23:31:46,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:31:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:46,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:31:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:31:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:31:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:31:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:46,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:31:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:46,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:31:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:46,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:31:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:31:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:31:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:31:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:31:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:31:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:31:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:31:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:31:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:31:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:31:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:31:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-19 23:31:47,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:31:47,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543324323] [2022-07-19 23:31:47,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543324323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:31:47,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:31:47,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:31:47,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630089310] [2022-07-19 23:31:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:31:47,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:31:47,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:31:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:31:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:31:47,114 INFO L87 Difference]: Start difference. First operand 11696 states and 16831 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:31:51,143 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 [] [2022-07-19 23:31:53,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:31:57,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:57,345 INFO L93 Difference]: Finished difference Result 12542 states and 18323 transitions. [2022-07-19 23:31:57,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:31:57,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2022-07-19 23:31:57,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:57,406 INFO L225 Difference]: With dead ends: 12542 [2022-07-19 23:31:57,406 INFO L226 Difference]: Without dead ends: 12521 [2022-07-19 23:31:57,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:31:57,417 INFO L413 NwaCegarLoop]: 1968 mSDtfsCounter, 2505 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 1038 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2752 SdHoareTripleChecker+Valid, 4960 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:57,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2752 Valid, 4960 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 1697 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2022-07-19 23:31:57,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12521 states. [2022-07-19 23:31:57,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12521 to 11677. [2022-07-19 23:31:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11677 states, 8479 states have (on average 1.3380115579667413) internal successors, (11345), 8648 states have internal predecessors, (11345), 2509 states have call successors, (2509), 636 states have call predecessors, (2509), 688 states have return successors, (2953), 2484 states have call predecessors, (2953), 2503 states have call successors, (2953) [2022-07-19 23:31:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11677 states to 11677 states and 16807 transitions. [2022-07-19 23:31:58,014 INFO L78 Accepts]: Start accepts. Automaton has 11677 states and 16807 transitions. Word has length 133 [2022-07-19 23:31:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:58,015 INFO L495 AbstractCegarLoop]: Abstraction has 11677 states and 16807 transitions. [2022-07-19 23:31:58,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 23:31:58,015 INFO L276 IsEmpty]: Start isEmpty. Operand 11677 states and 16807 transitions. [2022-07-19 23:31:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 23:31:58,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:58,022 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 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] [2022-07-19 23:31:58,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 23:31:58,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:58,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash 419378913, now seen corresponding path program 1 times [2022-07-19 23:31:58,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:31:58,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493072234] [2022-07-19 23:31:58,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:58,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:31:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:31:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:31:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:31:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:31:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:31:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:31:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:31:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:31:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:31:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:31:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:31:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:31:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:31:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:31:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:31:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:31:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 23:31:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 23:31:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:31:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-19 23:31:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 23:31:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:31:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-07-19 23:31:58,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:31:58,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493072234] [2022-07-19 23:31:58,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493072234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:31:58,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:31:58,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:31:58,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840318079] [2022-07-19 23:31:58,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:31:58,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:31:58,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:31:58,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:31:58,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:31:58,577 INFO L87 Difference]: Start difference. First operand 11677 states and 16807 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 23:32:03,248 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 [] [2022-07-19 23:32:05,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:32:07,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:32:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:18,550 INFO L93 Difference]: Finished difference Result 37229 states and 54433 transitions. [2022-07-19 23:32:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 23:32:18,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 154 [2022-07-19 23:32:18,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:18,674 INFO L225 Difference]: With dead ends: 37229 [2022-07-19 23:32:18,674 INFO L226 Difference]: Without dead ends: 25585 [2022-07-19 23:32:18,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-07-19 23:32:18,727 INFO L413 NwaCegarLoop]: 2091 mSDtfsCounter, 3560 mSDsluCounter, 4131 mSDsCounter, 0 mSdLazyCounter, 5252 mSolverCounterSat, 1541 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3888 SdHoareTripleChecker+Valid, 6222 SdHoareTripleChecker+Invalid, 6796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1541 IncrementalHoareTripleChecker+Valid, 5252 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:18,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3888 Valid, 6222 Invalid, 6796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1541 Valid, 5252 Invalid, 3 Unknown, 0 Unchecked, 19.0s Time] [2022-07-19 23:32:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25585 states. [2022-07-19 23:32:19,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25585 to 23267. [2022-07-19 23:32:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23267 states, 16893 states have (on average 1.3353460013023146) internal successors, (22558), 17268 states have internal predecessors, (22558), 4914 states have call successors, (4914), 1261 states have call predecessors, (4914), 1459 states have return successors, (6142), 4929 states have call predecessors, (6142), 4908 states have call successors, (6142) [2022-07-19 23:32:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23267 states to 23267 states and 33614 transitions. [2022-07-19 23:32:19,855 INFO L78 Accepts]: Start accepts. Automaton has 23267 states and 33614 transitions. Word has length 154 [2022-07-19 23:32:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:19,855 INFO L495 AbstractCegarLoop]: Abstraction has 23267 states and 33614 transitions. [2022-07-19 23:32:19,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-19 23:32:19,856 INFO L276 IsEmpty]: Start isEmpty. Operand 23267 states and 33614 transitions. [2022-07-19 23:32:19,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-19 23:32:19,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:19,871 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:19,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 23:32:19,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:19,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash 401879852, now seen corresponding path program 1 times [2022-07-19 23:32:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:19,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168431240] [2022-07-19 23:32:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:32:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:32:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:32:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:32:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:32:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:32:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:32:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:32:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:32:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:32:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:32:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:32:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:32:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 23:32:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 23:32:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 23:32:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 23:32:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-19 23:32:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 23:32:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:32:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-19 23:32:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-07-19 23:32:20,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:20,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168431240] [2022-07-19 23:32:20,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168431240] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:20,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:32:20,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:32:20,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90070446] [2022-07-19 23:32:20,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:20,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:32:20,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:20,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:32:20,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:32:20,553 INFO L87 Difference]: Start difference. First operand 23267 states and 33614 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 23:32:23,036 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 [] [2022-07-19 23:32:36,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:36,748 INFO L93 Difference]: Finished difference Result 66836 states and 96836 transitions. [2022-07-19 23:32:36,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 23:32:36,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 213 [2022-07-19 23:32:36,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:36,981 INFO L225 Difference]: With dead ends: 66836 [2022-07-19 23:32:36,981 INFO L226 Difference]: Without dead ends: 43612 [2022-07-19 23:32:37,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:32:37,071 INFO L413 NwaCegarLoop]: 2358 mSDtfsCounter, 2982 mSDsluCounter, 4486 mSDsCounter, 0 mSdLazyCounter, 5247 mSolverCounterSat, 1782 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3263 SdHoareTripleChecker+Valid, 6844 SdHoareTripleChecker+Invalid, 7030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1782 IncrementalHoareTripleChecker+Valid, 5247 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:37,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3263 Valid, 6844 Invalid, 7030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1782 Valid, 5247 Invalid, 1 Unknown, 0 Unchecked, 14.7s Time] [2022-07-19 23:32:37,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43612 states. [2022-07-19 23:32:38,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43612 to 40727. [2022-07-19 23:32:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40727 states, 29352 states have (on average 1.3204551648950669) internal successors, (38758), 30087 states have internal predecessors, (38758), 8654 states have call successors, (8654), 2322 states have call predecessors, (8654), 2720 states have return successors, (10996), 8685 states have call predecessors, (10996), 8648 states have call successors, (10996) [2022-07-19 23:32:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40727 states to 40727 states and 58408 transitions. [2022-07-19 23:32:39,216 INFO L78 Accepts]: Start accepts. Automaton has 40727 states and 58408 transitions. Word has length 213 [2022-07-19 23:32:39,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:39,217 INFO L495 AbstractCegarLoop]: Abstraction has 40727 states and 58408 transitions. [2022-07-19 23:32:39,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 23:32:39,217 INFO L276 IsEmpty]: Start isEmpty. Operand 40727 states and 58408 transitions. [2022-07-19 23:32:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-19 23:32:39,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:39,237 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:39,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 23:32:39,238 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:39,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:39,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1742817952, now seen corresponding path program 1 times [2022-07-19 23:32:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:39,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976644577] [2022-07-19 23:32:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:39,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:32:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:32:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:32:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:32:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:32:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:32:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:32:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:32:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:32:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:32:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:32:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:32:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:32:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:32:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 23:32:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 23:32:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 23:32:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 23:32:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-19 23:32:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-19 23:32:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-19 23:32:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-19 23:32:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-07-19 23:32:39,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:39,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976644577] [2022-07-19 23:32:39,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976644577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:39,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:32:39,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 23:32:39,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444459940] [2022-07-19 23:32:39,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:39,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 23:32:39,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:39,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 23:32:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:32:39,949 INFO L87 Difference]: Start difference. First operand 40727 states and 58408 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:32:42,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:32:44,687 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:32:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:32:55,546 INFO L93 Difference]: Finished difference Result 86177 states and 125263 transitions. [2022-07-19 23:32:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 23:32:55,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 206 [2022-07-19 23:32:55,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:32:55,794 INFO L225 Difference]: With dead ends: 86177 [2022-07-19 23:32:55,794 INFO L226 Difference]: Without dead ends: 45485 [2022-07-19 23:32:56,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-07-19 23:32:56,064 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 1100 mSDsluCounter, 5481 mSDsCounter, 0 mSdLazyCounter, 4995 mSolverCounterSat, 638 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 7402 SdHoareTripleChecker+Invalid, 5635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 4995 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:32:56,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 7402 Invalid, 5635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 4995 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2022-07-19 23:32:56,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45485 states. [2022-07-19 23:32:57,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45485 to 40736. [2022-07-19 23:32:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40736 states, 29361 states have (on average 1.3202207009298048) internal successors, (38763), 30096 states have internal predecessors, (38763), 8654 states have call successors, (8654), 2322 states have call predecessors, (8654), 2720 states have return successors, (10996), 8685 states have call predecessors, (10996), 8648 states have call successors, (10996) [2022-07-19 23:32:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40736 states to 40736 states and 58413 transitions. [2022-07-19 23:32:58,021 INFO L78 Accepts]: Start accepts. Automaton has 40736 states and 58413 transitions. Word has length 206 [2022-07-19 23:32:58,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:32:58,026 INFO L495 AbstractCegarLoop]: Abstraction has 40736 states and 58413 transitions. [2022-07-19 23:32:58,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:32:58,026 INFO L276 IsEmpty]: Start isEmpty. Operand 40736 states and 58413 transitions. [2022-07-19 23:32:58,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-19 23:32:58,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:32:58,042 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:32:58,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 23:32:58,043 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:32:58,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:32:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2061724804, now seen corresponding path program 1 times [2022-07-19 23:32:58,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:32:58,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714006551] [2022-07-19 23:32:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:32:58,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:32:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:32:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:32:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:32:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:32:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:32:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:32:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:32:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:32:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:32:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:32:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:32:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:32:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:32:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:32:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:32:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:32:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 23:32:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 23:32:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 23:32:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 23:32:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 23:32:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 23:32:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 23:32:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-19 23:32:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:32:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:32:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-19 23:32:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:32:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-07-19 23:32:58,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:32:58,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714006551] [2022-07-19 23:32:58,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714006551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:32:58,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:32:58,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:32:58,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811592004] [2022-07-19 23:32:58,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:32:58,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:32:58,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:32:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:32:58,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:32:58,480 INFO L87 Difference]: Start difference. First operand 40736 states and 58413 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:33:00,826 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 [] [2022-07-19 23:33:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:33:11,665 INFO L93 Difference]: Finished difference Result 107390 states and 154137 transitions. [2022-07-19 23:33:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 23:33:11,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 215 [2022-07-19 23:33:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:33:12,161 INFO L225 Difference]: With dead ends: 107390 [2022-07-19 23:33:12,161 INFO L226 Difference]: Without dead ends: 66701 [2022-07-19 23:33:12,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:33:12,263 INFO L413 NwaCegarLoop]: 2124 mSDtfsCounter, 3577 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 3712 mSolverCounterSat, 2452 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3785 SdHoareTripleChecker+Valid, 5629 SdHoareTripleChecker+Invalid, 6165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2452 IncrementalHoareTripleChecker+Valid, 3712 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:33:12,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3785 Valid, 5629 Invalid, 6165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2452 Valid, 3712 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-07-19 23:33:12,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66701 states. [2022-07-19 23:33:14,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66701 to 61984. [2022-07-19 23:33:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61984 states, 44853 states have (on average 1.3191090896929971) internal successors, (59166), 45972 states have internal predecessors, (59166), 12711 states have call successors, (12711), 3777 states have call predecessors, (12711), 4419 states have return successors, (16205), 12722 states have call predecessors, (16205), 12705 states have call successors, (16205) [2022-07-19 23:33:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61984 states to 61984 states and 88082 transitions. [2022-07-19 23:33:14,844 INFO L78 Accepts]: Start accepts. Automaton has 61984 states and 88082 transitions. Word has length 215 [2022-07-19 23:33:14,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:33:14,845 INFO L495 AbstractCegarLoop]: Abstraction has 61984 states and 88082 transitions. [2022-07-19 23:33:14,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:33:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 61984 states and 88082 transitions. [2022-07-19 23:33:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-19 23:33:15,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:33:15,249 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:33:15,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 23:33:15,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:33:15,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:33:15,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1813652058, now seen corresponding path program 1 times [2022-07-19 23:33:15,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:33:15,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994244541] [2022-07-19 23:33:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:33:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:33:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:33:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:33:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:33:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:33:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:33:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:33:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:33:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:33:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:33:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:33:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:33:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:33:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:33:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:33:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:33:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:33:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:33:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:33:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 23:33:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:33:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 23:33:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 23:33:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 23:33:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-19 23:33:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 23:33:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:33:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:15,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-19 23:33:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:16,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-19 23:33:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:33:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-07-19 23:33:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:33:16,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994244541] [2022-07-19 23:33:16,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994244541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:33:16,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:33:16,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 23:33:16,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254937679] [2022-07-19 23:33:16,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:33:16,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 23:33:16,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:33:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 23:33:16,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:33:16,225 INFO L87 Difference]: Start difference. First operand 61984 states and 88082 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-19 23:33:18,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:33:30,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:33:33,937 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 [] [2022-07-19 23:33:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:33:40,629 INFO L93 Difference]: Finished difference Result 148009 states and 221643 transitions. [2022-07-19 23:33:40,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 23:33:40,630 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 214 [2022-07-19 23:33:40,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:33:41,291 INFO L225 Difference]: With dead ends: 148009 [2022-07-19 23:33:41,291 INFO L226 Difference]: Without dead ends: 107911 [2022-07-19 23:33:41,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-07-19 23:33:41,441 INFO L413 NwaCegarLoop]: 3842 mSDtfsCounter, 3470 mSDsluCounter, 18112 mSDsCounter, 0 mSdLazyCounter, 9404 mSolverCounterSat, 2557 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 21954 SdHoareTripleChecker+Invalid, 11964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2557 IncrementalHoareTripleChecker+Valid, 9404 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:33:41,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3758 Valid, 21954 Invalid, 11964 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2557 Valid, 9404 Invalid, 3 Unknown, 0 Unchecked, 20.6s Time] [2022-07-19 23:33:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107911 states. [2022-07-19 23:33:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107911 to 60089. [2022-07-19 23:33:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60089 states, 43546 states have (on average 1.3201442153125431) internal successors, (57487), 44583 states have internal predecessors, (57487), 12308 states have call successors, (12308), 3644 states have call predecessors, (12308), 4234 states have return successors, (15520), 12337 states have call predecessors, (15520), 12304 states have call successors, (15520) [2022-07-19 23:33:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60089 states to 60089 states and 85315 transitions. [2022-07-19 23:33:45,012 INFO L78 Accepts]: Start accepts. Automaton has 60089 states and 85315 transitions. Word has length 214 [2022-07-19 23:33:45,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:33:45,012 INFO L495 AbstractCegarLoop]: Abstraction has 60089 states and 85315 transitions. [2022-07-19 23:33:45,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-19 23:33:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 60089 states and 85315 transitions. [2022-07-19 23:33:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-19 23:33:45,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:33:45,039 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:33:45,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 23:33:45,039 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:33:45,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:33:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1754366035, now seen corresponding path program 1 times [2022-07-19 23:33:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:33:45,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169786731] [2022-07-19 23:33:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:33:45,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:33:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:33:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:33:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:33:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:33:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:33:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:33:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:33:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:33:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:33:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:33:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:33:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:33:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:33:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:33:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:33:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:33:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:33:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:33:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 23:33:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:33:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 23:33:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 23:33:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-19 23:33:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 23:33:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-19 23:33:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:33:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-19 23:33:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:33:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 23:33:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-19 23:33:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:33:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2022-07-19 23:33:45,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:33:45,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169786731] [2022-07-19 23:33:45,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169786731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:33:45,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:33:45,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 23:33:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372483363] [2022-07-19 23:33:45,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:33:45,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:33:45,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:33:45,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:33:45,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:33:45,586 INFO L87 Difference]: Start difference. First operand 60089 states and 85315 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-19 23:33:47,949 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 [] [2022-07-19 23:33:49,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:33:53,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:33:56,067 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 [] [2022-07-19 23:34:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:34:11,135 INFO L93 Difference]: Finished difference Result 157473 states and 225839 transitions. [2022-07-19 23:34:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 23:34:11,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 222 [2022-07-19 23:34:11,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:34:11,677 INFO L225 Difference]: With dead ends: 157473 [2022-07-19 23:34:11,677 INFO L226 Difference]: Without dead ends: 97443 [2022-07-19 23:34:11,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-19 23:34:11,806 INFO L413 NwaCegarLoop]: 2855 mSDtfsCounter, 4157 mSDsluCounter, 6026 mSDsCounter, 0 mSdLazyCounter, 5450 mSolverCounterSat, 2601 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4444 SdHoareTripleChecker+Valid, 8881 SdHoareTripleChecker+Invalid, 8055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2601 IncrementalHoareTripleChecker+Valid, 5450 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:34:11,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4444 Valid, 8881 Invalid, 8055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2601 Valid, 5450 Invalid, 4 Unknown, 0 Unchecked, 21.6s Time] [2022-07-19 23:34:11,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97443 states. [2022-07-19 23:34:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97443 to 88765. [2022-07-19 23:34:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88765 states, 64446 states have (on average 1.3205939856624151) internal successors, (85107), 65979 states have internal predecessors, (85107), 18048 states have call successors, (18048), 5392 states have call predecessors, (18048), 6270 states have return successors, (22768), 18101 states have call predecessors, (22768), 18044 states have call successors, (22768) [2022-07-19 23:34:15,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88765 states to 88765 states and 125923 transitions. [2022-07-19 23:34:15,776 INFO L78 Accepts]: Start accepts. Automaton has 88765 states and 125923 transitions. Word has length 222 [2022-07-19 23:34:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:34:15,777 INFO L495 AbstractCegarLoop]: Abstraction has 88765 states and 125923 transitions. [2022-07-19 23:34:15,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-19 23:34:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 88765 states and 125923 transitions. [2022-07-19 23:34:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-19 23:34:15,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:34:15,797 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:34:15,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 23:34:15,797 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:34:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:34:15,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2088411672, now seen corresponding path program 1 times [2022-07-19 23:34:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 23:34:15,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476907279] [2022-07-19 23:34:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:34:15,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 23:34:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 23:34:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 23:34:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 23:34:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 23:34:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 23:34:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 23:34:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 23:34:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 23:34:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 23:34:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 23:34:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 23:34:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 23:34:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 23:34:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 23:34:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 23:34:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 23:34:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 23:34:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 23:34:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 23:34:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 23:34:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 23:34:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 23:34:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-19 23:34:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 23:34:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-19 23:34:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-19 23:34:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 23:34:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:34:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-07-19 23:34:16,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 23:34:16,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476907279] [2022-07-19 23:34:16,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476907279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:34:16,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:34:16,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 23:34:16,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800535323] [2022-07-19 23:34:16,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:34:16,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 23:34:16,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 23:34:16,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 23:34:16,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:34:16,661 INFO L87 Difference]: Start difference. First operand 88765 states and 125923 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (31), 8 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29)