/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:09:30,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:09:30,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:09:30,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:09:30,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:09:30,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:09:30,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:09:30,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:09:30,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:09:30,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:09:30,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:09:30,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:09:30,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:09:30,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:09:30,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:09:30,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:09:30,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:09:30,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:09:30,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:09:30,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:09:30,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:09:30,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:09:30,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:09:30,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:09:30,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:09:30,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:09:30,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:09:30,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:09:30,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:09:30,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:09:30,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:09:30,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:09:30,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:09:30,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:09:30,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:09:30,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:09:30,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:09:30,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:09:30,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:09:30,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:09:30,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:09:30,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:09:31,021 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:09:31,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:09:31,022 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:09:31,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:09:31,023 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:09:31,024 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:09:31,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:09:31,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:09:31,025 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:09:31,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:09:31,025 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:09:31,026 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:09:31,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:09:31,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:09:31,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:09:31,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:09:31,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:09:31,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:09:31,027 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:09:31,028 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:09:31,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:09:31,028 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:09:31,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:09:31,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:09:31,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:09:31,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:09:31,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:09:31,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:09:31,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:09:31,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:09:31,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:09:31,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:09:31,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:09:31,031 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:09:31,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:09:31,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:09:31,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:09:31,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:09:31,446 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:09:31,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2022-10-15 21:09:31,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a646c892c/d97a80a55c3248c6a6a2d1995745a59b/FLAG026ba9a31 [2022-10-15 21:09:32,853 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:09:32,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2022-10-15 21:09:32,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a646c892c/d97a80a55c3248c6a6a2d1995745a59b/FLAG026ba9a31 [2022-10-15 21:09:33,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a646c892c/d97a80a55c3248c6a6a2d1995745a59b [2022-10-15 21:09:33,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:09:33,086 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:09:33,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:09:33,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:09:33,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:09:33,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:09:33" (1/1) ... [2022-10-15 21:09:33,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3794d515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:33, skipping insertion in model container [2022-10-15 21:09:33,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:09:33" (1/1) ... [2022-10-15 21:09:33,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:09:33,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:09:36,402 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-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2022-10-15 21:09:36,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:09:36,588 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:09:37,343 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-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2022-10-15 21:09:37,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:09:37,497 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:09:37,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37 WrapperNode [2022-10-15 21:09:37,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:09:37,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:09:37,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:09:37,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:09:37,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (1/1) ... [2022-10-15 21:09:37,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (1/1) ... [2022-10-15 21:09:37,967 INFO L138 Inliner]: procedures = 309, calls = 2432, calls flagged for inlining = 139, calls inlined = 90, statements flattened = 4021 [2022-10-15 21:09:37,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:09:37,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:09:37,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:09:37,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:09:37,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (1/1) ... [2022-10-15 21:09:37,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (1/1) ... [2022-10-15 21:09:38,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (1/1) ... [2022-10-15 21:09:38,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (1/1) ... [2022-10-15 21:09:38,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (1/1) ... [2022-10-15 21:09:38,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (1/1) ... [2022-10-15 21:09:38,269 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (1/1) ... [2022-10-15 21:09:38,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (1/1) ... [2022-10-15 21:09:38,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:09:38,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:09:38,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:09:38,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:09:38,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (1/1) ... [2022-10-15 21:09:38,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:09:38,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:09:38,378 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) [2022-10-15 21:09:38,398 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 [2022-10-15 21:09:38,455 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-15 21:09:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-15 21:09:38,455 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-10-15 21:09:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-10-15 21:09:38,456 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_ctl_ioctl [2022-10-15 21:09:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_ctl_ioctl [2022-10-15 21:09:38,456 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_release [2022-10-15 21:09:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_release [2022-10-15 21:09:38,456 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2022-10-15 21:09:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2022-10-15 21:09:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:09:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:09:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_get_disc_info [2022-10-15 21:09:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_get_disc_info [2022-10-15 21:09:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_bio_alloc [2022-10-15 21:09:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_bio_alloc [2022-10-15 21:09:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:09:38,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:09:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_setup_dev [2022-10-15 21:09:38,458 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_setup_dev [2022-10-15 21:09:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-10-15 21:09:38,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-10-15 21:09:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure bdget [2022-10-15 21:09:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure bdget [2022-10-15 21:09:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_set_speed [2022-10-15 21:09:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_set_speed [2022-10-15 21:09:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure bdevname [2022-10-15 21:09:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure bdevname [2022-10-15 21:09:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-15 21:09:38,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-15 21:09:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_shrink_pktlist [2022-10-15 21:09:38,460 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_shrink_pktlist [2022-10-15 21:09:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-10-15 21:09:38,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-10-15 21:09:38,460 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-10-15 21:09:38,461 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-10-15 21:09:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-10-15 21:09:38,461 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-10-15 21:09:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-15 21:09:38,461 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-15 21:09:38,461 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_put [2022-10-15 21:09:38,462 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_put [2022-10-15 21:09:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2022-10-15 21:09:38,462 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2022-10-15 21:09:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-15 21:09:38,462 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-15 21:09:38,462 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_mode_select [2022-10-15 21:09:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_mode_select [2022-10-15 21:09:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_remove [2022-10-15 21:09:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_remove [2022-10-15 21:09:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-10-15 21:09:38,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-10-15 21:09:38,463 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_debugfs_cleanup [2022-10-15 21:09:38,464 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_debugfs_cleanup [2022-10-15 21:09:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:09:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-10-15 21:09:38,464 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-10-15 21:09:38,464 INFO L130 BoogieDeclarations]: Found specification of procedure bio_init [2022-10-15 21:09:38,465 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_init [2022-10-15 21:09:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure set_blocksize [2022-10-15 21:09:38,465 INFO L138 BoogieDeclarations]: Found implementation of procedure set_blocksize [2022-10-15 21:09:38,465 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_dump_sense [2022-10-15 21:09:38,465 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_dump_sense [2022-10-15 21:09:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2022-10-15 21:09:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2022-10-15 21:09:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2022-10-15 21:09:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2022-10-15 21:09:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:09:38,466 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-10-15 21:09:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-10-15 21:09:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_lock_door [2022-10-15 21:09:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_lock_door [2022-10-15 21:09:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_get [2022-10-15 21:09:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_get [2022-10-15 21:09:38,467 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_remove_dev [2022-10-15 21:09:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_remove_dev [2022-10-15 21:09:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-10-15 21:09:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-10-15 21:09:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-10-15 21:09:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-10-15 21:09:38,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:09:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2022-10-15 21:09:38,469 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2022-10-15 21:09:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:09:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-15 21:09:38,469 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-15 21:09:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-10-15 21:09:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-10-15 21:09:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-10-15 21:09:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-10-15 21:09:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-10-15 21:09:38,470 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-10-15 21:09:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-15 21:09:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-15 21:09:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-15 21:09:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-15 21:09:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-10-15 21:09:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-10-15 21:09:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-10-15 21:09:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-10-15 21:09:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-15 21:09:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-15 21:09:38,472 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_sysfs_cleanup [2022-10-15 21:09:38,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_sysfs_cleanup [2022-10-15 21:09:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_init [2022-10-15 21:09:38,473 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_init [2022-10-15 21:09:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_find_dev_from_minor [2022-10-15 21:09:38,473 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_find_dev_from_minor [2022-10-15 21:09:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:09:38,473 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-15 21:09:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-15 21:09:38,474 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-10-15 21:09:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-10-15 21:09:38,474 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-10-15 21:09:38,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-10-15 21:09:38,474 INFO L130 BoogieDeclarations]: Found specification of procedure init_write_congestion_marks [2022-10-15 21:09:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure init_write_congestion_marks [2022-10-15 21:09:38,475 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-10-15 21:09:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-10-15 21:09:38,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:09:38,475 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_get_track_info [2022-10-15 21:09:38,475 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_get_track_info [2022-10-15 21:09:38,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:09:38,476 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-10-15 21:09:38,476 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-10-15 21:09:38,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:09:38,476 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:09:38,476 INFO L130 BoogieDeclarations]: Found specification of procedure new_decode_dev [2022-10-15 21:09:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure new_decode_dev [2022-10-15 21:09:38,477 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-10-15 21:09:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-10-15 21:09:38,477 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_create [2022-10-15 21:09:38,477 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_create [2022-10-15 21:09:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:09:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:09:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-10-15 21:09:38,478 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-10-15 21:09:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:09:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:09:38,478 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-10-15 21:09:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-10-15 21:09:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:09:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_put [2022-10-15 21:09:38,479 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_put [2022-10-15 21:09:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:09:38,479 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-10-15 21:09:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-10-15 21:09:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure queue_max_segments [2022-10-15 21:09:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_max_segments [2022-10-15 21:09:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_check_events [2022-10-15 21:09:38,480 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_check_events [2022-10-15 21:09:38,480 INFO L130 BoogieDeclarations]: Found specification of procedure init_cdrom_command [2022-10-15 21:09:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure init_cdrom_command [2022-10-15 21:09:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-10-15 21:09:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-10-15 21:09:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_mode_sense [2022-10-15 21:09:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_mode_sense [2022-10-15 21:09:38,481 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-10-15 21:09:38,481 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-10-15 21:09:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_generic_packet [2022-10-15 21:09:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_generic_packet [2022-10-15 21:09:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-15 21:09:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-15 21:09:38,482 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-10-15 21:09:38,482 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-10-15 21:09:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2022-10-15 21:09:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2022-10-15 21:09:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_flush_cache [2022-10-15 21:09:38,483 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_flush_cache [2022-10-15 21:09:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:09:38,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:09:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:09:38,484 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-15 21:09:38,484 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-15 21:09:39,349 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:09:39,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:09:39,577 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-15 21:09:39,783 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-10-15 21:09:39,784 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-10-15 21:09:41,463 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-15 21:09:41,471 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-15 21:09:41,473 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-15 21:09:41,475 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-15 21:09:41,481 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-15 21:09:41,483 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-15 21:09:41,537 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-15 21:09:44,079 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##416: assume false; [2022-10-15 21:09:44,079 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##417: assume !false; [2022-10-15 21:09:44,079 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##282: assume !false; [2022-10-15 21:09:44,080 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##281: assume false; [2022-10-15 21:09:44,080 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##214: assume !false; [2022-10-15 21:09:44,080 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##213: assume false; [2022-10-15 21:09:44,080 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##324: assume false; [2022-10-15 21:09:44,081 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2022-10-15 21:09:44,081 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2022-10-15 21:09:44,081 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2022-10-15 21:09:44,081 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2022-10-15 21:09:44,081 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##153: assume !false; [2022-10-15 21:09:44,082 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##152: assume false; [2022-10-15 21:09:44,082 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##325: assume !false; [2022-10-15 21:09:44,176 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:09:44,199 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:09:44,199 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 21:09:44,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:09:44 BoogieIcfgContainer [2022-10-15 21:09:44,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:09:44,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:09:44,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:09:44,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:09:44,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:09:33" (1/3) ... [2022-10-15 21:09:44,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd670bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:09:44, skipping insertion in model container [2022-10-15 21:09:44,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:09:37" (2/3) ... [2022-10-15 21:09:44,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd670bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:09:44, skipping insertion in model container [2022-10-15 21:09:44,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:09:44" (3/3) ... [2022-10-15 21:09:44,217 INFO L112 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2022-10-15 21:09:44,244 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:09:44,245 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2022-10-15 21:09:44,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:09:44,381 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=FINITE_AUTOMATA, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ea44a55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:09:44,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-10-15 21:09:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 1346 states, 929 states have (on average 1.3885898815931108) internal successors, (1290), 1028 states have internal predecessors, (1290), 257 states have call successors, (257), 79 states have call predecessors, (257), 79 states have return successors, (257), 254 states have call predecessors, (257), 257 states have call successors, (257) [2022-10-15 21:09:44,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-15 21:09:44,430 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:09:44,431 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:09:44,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONINTEGER_OVERFLOW === [init_write_congestion_marksErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, init_write_congestion_marksErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-10-15 21:09:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:09:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 124755165, now seen corresponding path program 1 times [2022-10-15 21:09:44,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:09:44,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087108419] [2022-10-15 21:09:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:09:44,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:09:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:45,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 21:09:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:45,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:09:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:45,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-15 21:09:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:45,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-15 21:09:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 21:09:45,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:09:45,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087108419] [2022-10-15 21:09:45,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087108419] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:09:45,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:09:45,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:09:45,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883635946] [2022-10-15 21:09:45,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:09:45,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:09:45,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:09:45,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:09:45,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:09:45,813 INFO L87 Difference]: Start difference. First operand has 1346 states, 929 states have (on average 1.3885898815931108) internal successors, (1290), 1028 states have internal predecessors, (1290), 257 states have call successors, (257), 79 states have call predecessors, (257), 79 states have return successors, (257), 254 states have call predecessors, (257), 257 states have call successors, (257) Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:09:50,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:09:51,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:09:51,201 INFO L93 Difference]: Finished difference Result 2776 states and 3857 transitions. [2022-10-15 21:09:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:09:51,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-10-15 21:09:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:09:51,235 INFO L225 Difference]: With dead ends: 2776 [2022-10-15 21:09:51,236 INFO L226 Difference]: Without dead ends: 1404 [2022-10-15 21:09:51,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:09:51,253 INFO L413 NwaCegarLoop]: 1768 mSDtfsCounter, 364 mSDsluCounter, 3558 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 277 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 5326 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-10-15 21:09:51,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 5326 Invalid, 1669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [277 Valid, 1391 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-10-15 21:09:51,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2022-10-15 21:09:51,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1300. [2022-10-15 21:09:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 914 states have (on average 1.3468271334792123) internal successors, (1231), 988 states have internal predecessors, (1231), 250 states have call successors, (250), 78 states have call predecessors, (250), 78 states have return successors, (250), 247 states have call predecessors, (250), 250 states have call successors, (250) [2022-10-15 21:09:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1731 transitions. [2022-10-15 21:09:51,486 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1731 transitions. Word has length 41 [2022-10-15 21:09:51,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:09:51,487 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1731 transitions. [2022-10-15 21:09:51,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:09:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1731 transitions. [2022-10-15 21:09:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-15 21:09:51,493 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:09:51,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:09:51,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:09:51,494 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONINTEGER_OVERFLOW === [init_write_congestion_marksErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, init_write_congestion_marksErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-10-15 21:09:51,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:09:51,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1306373134, now seen corresponding path program 1 times [2022-10-15 21:09:51,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:09:51,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740443583] [2022-10-15 21:09:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:09:51,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:09:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:51,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 21:09:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:09:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:51,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:09:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:09:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:51,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 21:09:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 21:09:52,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:09:52,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740443583] [2022-10-15 21:09:52,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740443583] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:09:52,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:09:52,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:09:52,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280351686] [2022-10-15 21:09:52,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:09:52,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:09:52,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:09:52,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:09:52,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:09:52,010 INFO L87 Difference]: Start difference. First operand 1300 states and 1731 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 21:09:56,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:09:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:09:56,948 INFO L93 Difference]: Finished difference Result 2762 states and 3745 transitions. [2022-10-15 21:09:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:09:56,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2022-10-15 21:09:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:09:56,964 INFO L225 Difference]: With dead ends: 2762 [2022-10-15 21:09:56,965 INFO L226 Difference]: Without dead ends: 1512 [2022-10-15 21:09:56,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:09:56,973 INFO L413 NwaCegarLoop]: 1749 mSDtfsCounter, 940 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 299 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:09:56,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 3396 Invalid, 1142 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [299 Valid, 842 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-10-15 21:09:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2022-10-15 21:09:57,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1408. [2022-10-15 21:09:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1000 states have (on average 1.356) internal successors, (1356), 1074 states have internal predecessors, (1356), 274 states have call successors, (274), 78 states have call predecessors, (274), 78 states have return successors, (274), 270 states have call predecessors, (274), 274 states have call successors, (274) [2022-10-15 21:09:57,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1904 transitions. [2022-10-15 21:09:57,074 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1904 transitions. Word has length 48 [2022-10-15 21:09:57,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:09:57,075 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 1904 transitions. [2022-10-15 21:09:57,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 21:09:57,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1904 transitions. [2022-10-15 21:09:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-15 21:09:57,079 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:09:57,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:09:57,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:09:57,080 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting init_write_congestion_marksErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [init_write_congestion_marksErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, init_write_congestion_marksErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-10-15 21:09:57,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:09:57,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2061674408, now seen corresponding path program 1 times [2022-10-15 21:09:57,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:09:57,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742530470] [2022-10-15 21:09:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:09:57,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:09:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 21:09:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:09:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:09:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 21:09:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:09:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:09:57,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:09:57,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742530470] [2022-10-15 21:09:57,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742530470] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:09:57,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:09:57,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:09:57,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889850496] [2022-10-15 21:09:57,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:09:57,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:09:57,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:09:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:09:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:09:57,833 INFO L87 Difference]: Start difference. First operand 1408 states and 1904 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-15 21:10:00,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:10:04,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:10:07,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:10:07,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:10:07,911 INFO L93 Difference]: Finished difference Result 2873 states and 3917 transitions. [2022-10-15 21:10:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 21:10:07,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 51 [2022-10-15 21:10:07,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:10:07,932 INFO L225 Difference]: With dead ends: 2873 [2022-10-15 21:10:07,933 INFO L226 Difference]: Without dead ends: 1512 [2022-10-15 21:10:07,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:10:07,943 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 349 mSDsluCounter, 4729 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 273 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 6446 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:10:07,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 6446 Invalid, 2140 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [273 Valid, 1864 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2022-10-15 21:10:07,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2022-10-15 21:10:08,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1408. [2022-10-15 21:10:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1000 states have (on average 1.355) internal successors, (1355), 1073 states have internal predecessors, (1355), 274 states have call successors, (274), 78 states have call predecessors, (274), 78 states have return successors, (274), 270 states have call predecessors, (274), 274 states have call successors, (274) [2022-10-15 21:10:08,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1903 transitions. [2022-10-15 21:10:08,048 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1903 transitions. Word has length 51 [2022-10-15 21:10:08,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:10:08,049 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 1903 transitions. [2022-10-15 21:10:08,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-15 21:10:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1903 transitions. [2022-10-15 21:10:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-10-15 21:10:08,054 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:10:08,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:10:08,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:10:08,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting init_write_congestion_marksErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [init_write_congestion_marksErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, init_write_congestion_marksErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-10-15 21:10:08,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:10:08,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1149391224, now seen corresponding path program 1 times [2022-10-15 21:10:08,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:10:08,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661360588] [2022-10-15 21:10:08,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:10:08,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:10:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:08,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 21:10:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:08,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:10:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 21:10:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:08,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:10:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:08,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:10:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:08,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:10:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:08,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-15 21:10:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:08,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-15 21:10:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:08,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-15 21:10:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:10:08,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:10:08,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661360588] [2022-10-15 21:10:08,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661360588] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:10:08,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:10:08,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 21:10:08,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466053446] [2022-10-15 21:10:08,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:10:08,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 21:10:08,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:10:08,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 21:10:08,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:10:08,915 INFO L87 Difference]: Start difference. First operand 1408 states and 1903 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-15 21:10:12,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:10:16,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:10:18,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:10:19,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:10:19,697 INFO L93 Difference]: Finished difference Result 2907 states and 3961 transitions. [2022-10-15 21:10:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:10:19,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 81 [2022-10-15 21:10:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:10:19,717 INFO L225 Difference]: With dead ends: 2907 [2022-10-15 21:10:19,717 INFO L226 Difference]: Without dead ends: 1512 [2022-10-15 21:10:19,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:10:19,729 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 353 mSDsluCounter, 5998 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 271 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 7714 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:10:19,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 7714 Invalid, 2639 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [271 Valid, 2365 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2022-10-15 21:10:19,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2022-10-15 21:10:19,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1408. [2022-10-15 21:10:19,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1000 states have (on average 1.354) internal successors, (1354), 1073 states have internal predecessors, (1354), 274 states have call successors, (274), 78 states have call predecessors, (274), 78 states have return successors, (274), 270 states have call predecessors, (274), 274 states have call successors, (274) [2022-10-15 21:10:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1902 transitions. [2022-10-15 21:10:19,814 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1902 transitions. Word has length 81 [2022-10-15 21:10:19,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:10:19,815 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 1902 transitions. [2022-10-15 21:10:19,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-15 21:10:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1902 transitions. [2022-10-15 21:10:19,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-15 21:10:19,818 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:10:19,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:10:19,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:10:19,819 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting init_write_congestion_marksErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [init_write_congestion_marksErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, init_write_congestion_marksErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 78 more)] === [2022-10-15 21:10:19,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:10:19,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2134662271, now seen corresponding path program 1 times [2022-10-15 21:10:19,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:10:19,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255672638] [2022-10-15 21:10:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:10:19,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:10:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:20,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-15 21:10:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:10:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 21:10:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:20,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:10:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:20,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:10:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:20,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:10:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-15 21:10:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:20,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-15 21:10:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-15 21:10:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:10:20,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:10:20,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255672638] [2022-10-15 21:10:20,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255672638] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:10:20,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:10:20,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:10:20,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384104164] [2022-10-15 21:10:20,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:10:20,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:10:20,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:10:20,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:10:20,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:10:20,525 INFO L87 Difference]: Start difference. First operand 1408 states and 1902 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9)