/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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:17:31,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:17:31,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:17:31,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:17:31,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:17:31,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:17:31,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:17:31,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:17:31,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:17:31,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:17:31,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:17:31,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:17:31,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:17:31,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:17:31,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:17:31,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:17:31,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:17:31,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:17:31,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:17:31,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:17:31,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:17:31,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:17:31,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:17:31,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:17:31,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:17:31,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:17:31,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:17:31,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:17:31,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:17:31,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:17:31,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:17:31,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:17:31,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:17:31,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:17:31,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:17:31,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:17:31,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:17:31,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:17:31,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:17:31,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:17:31,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:17:31,738 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 21:17:31,770 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:17:31,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:17:31,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:17:31,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:17:31,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:17:31,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:17:31,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:17:31,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:17:31,774 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:17:31,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:17:31,774 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:17:31,775 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:17:31,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:17:31,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:17:31,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:17:31,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:17:31,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:17:31,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:17:31,777 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:17:31,777 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:17:31,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:17:31,777 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:17:31,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:17:31,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:17:31,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:17:31,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:17:31,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:17:31,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:17:31,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:17:31,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:17:31,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:17:31,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:17:31,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:17:31,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:17:32,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:17:32,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:17:32,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:17:32,229 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:17:32,230 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:17:32,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2022-10-15 21:17:32,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d3ffd8d/58f0fa6395b443d9ad3ecfe98ca8a2ac/FLAGde95dd751 [2022-10-15 21:17:33,601 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:17:33,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2022-10-15 21:17:33,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d3ffd8d/58f0fa6395b443d9ad3ecfe98ca8a2ac/FLAGde95dd751 [2022-10-15 21:17:33,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d3ffd8d/58f0fa6395b443d9ad3ecfe98ca8a2ac [2022-10-15 21:17:33,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:17:33,966 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:17:33,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:17:33,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:17:33,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:17:33,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:17:33" (1/1) ... [2022-10-15 21:17:33,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71bdc5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:33, skipping insertion in model container [2022-10-15 21:17:33,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:17:33" (1/1) ... [2022-10-15 21:17:33,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:17:34,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:17:34,824 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6708] [2022-10-15 21:17:34,825 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6709-6710] [2022-10-15 21:17:35,004 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i[192641,192654] [2022-10-15 21:17:36,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:17:36,137 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:17:36,445 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6708] [2022-10-15 21:17:36,446 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6709-6710] [2022-10-15 21:17:36,456 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i[192641,192654] [2022-10-15 21:17:36,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:17:36,868 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:17:36,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36 WrapperNode [2022-10-15 21:17:36,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:17:36,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:17:36,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:17:36,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:17:36,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:36,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,177 INFO L138 Inliner]: procedures = 151, calls = 1509, calls flagged for inlining = 53, calls inlined = 38, statements flattened = 2287 [2022-10-15 21:17:37,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:17:37,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:17:37,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:17:37,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:17:37,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,363 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:17:37,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:17:37,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:17:37,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:17:37,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (1/1) ... [2022-10-15 21:17:37,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:17:37,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:17:37,450 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 21:17:37,464 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 21:17:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:17:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-15 21:17:37,538 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-15 21:17:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure handle_led [2022-10-15 21:17:37,538 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_led [2022-10-15 21:17:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:17:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:17:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:17:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:17:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:17:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure start_int_fifo [2022-10-15 21:17:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure start_int_fifo [2022-10-15 21:17:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure symbolic [2022-10-15 21:17:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure symbolic [2022-10-15 21:17:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:17:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:17:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-15 21:17:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-15 21:17:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:17:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:17:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-15 21:17:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-15 21:17:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-10-15 21:17:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-10-15 21:17:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:17:37,541 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:17:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure start_isoc_chain [2022-10-15 21:17:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure start_isoc_chain [2022-10-15 21:17:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:17:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:17:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:17:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-15 21:17:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-15 21:17:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:17:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:17:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-10-15 21:17:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-10-15 21:17:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure timer_pending [2022-10-15 21:17:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_pending [2022-10-15 21:17:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:17:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-10-15 21:17:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-10-15 21:17:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:17:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure set_led_bit [2022-10-15 21:17:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure set_led_bit [2022-10-15 21:17:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:17:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:17:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-10-15 21:17:37,546 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-10-15 21:17:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:17:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-10-15 21:17:37,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-10-15 21:17:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-15 21:17:37,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-15 21:17:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_start_transfer [2022-10-15 21:17:37,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_start_transfer [2022-10-15 21:17:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure queue_control_request [2022-10-15 21:17:37,550 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_control_request [2022-10-15 21:17:37,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:17:37,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:17:37,551 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-10-15 21:17:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-10-15 21:17:37,551 INFO L130 BoogieDeclarations]: Found specification of procedure fill_isoc_urb [2022-10-15 21:17:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_isoc_urb [2022-10-15 21:17:37,552 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-15 21:17:37,553 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-15 21:17:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:17:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-15 21:17:37,554 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-15 21:17:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:17:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:17:37,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:17:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:17:37,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:17:38,105 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:17:38,109 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:17:38,612 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:17:43,432 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:17:43,462 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:17:43,463 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 21:17:43,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:17:43 BoogieIcfgContainer [2022-10-15 21:17:43,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:17:43,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:17:43,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:17:43,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:17:43,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:17:33" (1/3) ... [2022-10-15 21:17:43,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687e4468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:17:43, skipping insertion in model container [2022-10-15 21:17:43,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:17:36" (2/3) ... [2022-10-15 21:17:43,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687e4468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:17:43, skipping insertion in model container [2022-10-15 21:17:43,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:17:43" (3/3) ... [2022-10-15 21:17:43,489 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--isdn--hisax--hfc_usb.ko-entry_point.cil.out.i [2022-10-15 21:17:43,514 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:17:43,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 82 error locations. [2022-10-15 21:17:43,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:17:43,654 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;@53269d54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:17:43,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 82 error locations. [2022-10-15 21:17:43,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 683 states, 467 states have (on average 1.4732334047109208) internal successors, (688), 556 states have internal predecessors, (688), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-10-15 21:17:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-15 21:17:43,677 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:17:43,678 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] [2022-10-15 21:17:43,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [start_isoc_chainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 79 more)] === [2022-10-15 21:17:43,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:17:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1643485065, now seen corresponding path program 1 times [2022-10-15 21:17:43,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:17:43,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99422513] [2022-10-15 21:17:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:17:43,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:17:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:17:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:44,506 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 21:17:44,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:17:44,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99422513] [2022-10-15 21:17:44,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99422513] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:17:44,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:17:44,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:17:44,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834679321] [2022-10-15 21:17:44,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:17:44,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:17:44,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:17:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:17:44,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:17:44,560 INFO L87 Difference]: Start difference. First operand has 683 states, 467 states have (on average 1.4732334047109208) internal successors, (688), 556 states have internal predecessors, (688), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 21:17:48,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:17:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:17:49,615 INFO L93 Difference]: Finished difference Result 1446 states and 1937 transitions. [2022-10-15 21:17:49,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:17:49,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-10-15 21:17:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:17:49,667 INFO L225 Difference]: With dead ends: 1446 [2022-10-15 21:17:49,670 INFO L226 Difference]: Without dead ends: 743 [2022-10-15 21:17:49,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:17:49,693 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 193 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 119 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:17:49,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1901 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 556 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-10-15 21:17:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-10-15 21:17:49,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 704. [2022-10-15 21:17:49,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 488 states have (on average 1.4569672131147542) internal successors, (711), 572 states have internal predecessors, (711), 104 states have call successors, (104), 30 states have call predecessors, (104), 30 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-10-15 21:17:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 919 transitions. [2022-10-15 21:17:49,824 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 919 transitions. Word has length 23 [2022-10-15 21:17:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:17:49,825 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 919 transitions. [2022-10-15 21:17:49,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 21:17:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 919 transitions. [2022-10-15 21:17:49,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-15 21:17:49,829 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:17:49,829 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:17:49,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:17:49,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [start_isoc_chainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 79 more)] === [2022-10-15 21:17:49,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:17:49,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1767680910, now seen corresponding path program 1 times [2022-10-15 21:17:49,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:17:49,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967202003] [2022-10-15 21:17:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:17:49,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:17:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:50,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:17:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:50,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 21:17:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:17:50,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:17:50,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967202003] [2022-10-15 21:17:50,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967202003] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:17:50,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:17:50,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:17:50,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982183102] [2022-10-15 21:17:50,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:17:50,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:17:50,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:17:50,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:17:50,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:17:50,242 INFO L87 Difference]: Start difference. First operand 704 states and 919 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:17:54,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:17:55,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:17:55,387 INFO L93 Difference]: Finished difference Result 1433 states and 1882 transitions. [2022-10-15 21:17:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:17:55,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-10-15 21:17:55,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:17:55,396 INFO L225 Difference]: With dead ends: 1433 [2022-10-15 21:17:55,396 INFO L226 Difference]: Without dead ends: 742 [2022-10-15 21:17:55,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 21:17:55,402 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 128 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 105 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:17:55,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2522 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 763 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-10-15 21:17:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-10-15 21:17:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 704. [2022-10-15 21:17:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 488 states have (on average 1.4549180327868851) internal successors, (710), 572 states have internal predecessors, (710), 104 states have call successors, (104), 30 states have call predecessors, (104), 30 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-10-15 21:17:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 918 transitions. [2022-10-15 21:17:55,460 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 918 transitions. Word has length 43 [2022-10-15 21:17:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:17:55,461 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 918 transitions. [2022-10-15 21:17:55,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:17:55,462 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 918 transitions. [2022-10-15 21:17:55,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-15 21:17:55,464 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:17:55,465 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:17:55,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:17:55,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [start_isoc_chainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 79 more)] === [2022-10-15 21:17:55,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:17:55,466 INFO L85 PathProgramCache]: Analyzing trace with hash 533141680, now seen corresponding path program 1 times [2022-10-15 21:17:55,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:17:55,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684121501] [2022-10-15 21:17:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:17:55,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:17:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:17:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:55,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 21:17:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:17:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 21:17:55,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:17:55,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684121501] [2022-10-15 21:17:55,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684121501] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:17:55,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:17:55,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:17:55,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428645196] [2022-10-15 21:17:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:17:55,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:17:55,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:17:55,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:17:55,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:17:55,880 INFO L87 Difference]: Start difference. First operand 704 states and 918 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:18:00,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:03,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:03,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:03,154 INFO L93 Difference]: Finished difference Result 1829 states and 2460 transitions. [2022-10-15 21:18:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:18:03,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-10-15 21:18:03,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:03,164 INFO L225 Difference]: With dead ends: 1829 [2022-10-15 21:18:03,165 INFO L226 Difference]: Without dead ends: 1141 [2022-10-15 21:18:03,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 21:18:03,169 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 503 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 166 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:03,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 2139 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 677 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2022-10-15 21:18:03,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2022-10-15 21:18:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 785. [2022-10-15 21:18:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 564 states have (on average 1.4663120567375887) internal successors, (827), 648 states have internal predecessors, (827), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2022-10-15 21:18:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1045 transitions. [2022-10-15 21:18:03,240 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1045 transitions. Word has length 43 [2022-10-15 21:18:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:03,241 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 1045 transitions. [2022-10-15 21:18:03,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:18:03,242 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1045 transitions. [2022-10-15 21:18:03,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-15 21:18:03,250 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:03,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:18:03,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:18:03,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONINTEGER_OVERFLOW === [start_isoc_chainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 79 more)] === [2022-10-15 21:18:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:03,256 INFO L85 PathProgramCache]: Analyzing trace with hash -43664760, now seen corresponding path program 1 times [2022-10-15 21:18:03,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:03,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872920628] [2022-10-15 21:18:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:03,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:03,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:03,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 21:18:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 21:18:03,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:03,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872920628] [2022-10-15 21:18:03,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872920628] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:03,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:03,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:18:03,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691125771] [2022-10-15 21:18:03,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:03,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:18:03,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:18:03,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:18:03,656 INFO L87 Difference]: Start difference. First operand 785 states and 1045 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:18:08,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:10,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:11,106 INFO L93 Difference]: Finished difference Result 1628 states and 2185 transitions. [2022-10-15 21:18:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:18:11,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-10-15 21:18:11,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:11,119 INFO L225 Difference]: With dead ends: 1628 [2022-10-15 21:18:11,119 INFO L226 Difference]: Without dead ends: 1624 [2022-10-15 21:18:11,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:18:11,121 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 1027 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 248 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:11,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 1949 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 665 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-10-15 21:18:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2022-10-15 21:18:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1472. [2022-10-15 21:18:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1116 states have (on average 1.4668458781362008) internal successors, (1637), 1203 states have internal predecessors, (1637), 216 states have call successors, (216), 58 states have call predecessors, (216), 58 states have return successors, (216), 216 states have call predecessors, (216), 216 states have call successors, (216) [2022-10-15 21:18:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2069 transitions. [2022-10-15 21:18:11,208 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2069 transitions. Word has length 44 [2022-10-15 21:18:11,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:11,208 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 2069 transitions. [2022-10-15 21:18:11,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:18:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2069 transitions. [2022-10-15 21:18:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 21:18:11,210 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:11,210 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:18:11,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:18:11,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [start_isoc_chainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 79 more)] === [2022-10-15 21:18:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:11,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1907631443, now seen corresponding path program 1 times [2022-10-15 21:18:11,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:11,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810742164] [2022-10-15 21:18:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:11,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:11,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 21:18:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 21:18:11,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:11,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810742164] [2022-10-15 21:18:11,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810742164] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:11,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:11,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:18:11,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226519747] [2022-10-15 21:18:11,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:11,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:18:11,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:11,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:18:11,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:18:11,451 INFO L87 Difference]: Start difference. First operand 1472 states and 2069 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:18:15,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:16,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:16,700 INFO L93 Difference]: Finished difference Result 3290 states and 4659 transitions. [2022-10-15 21:18:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:18:16,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-10-15 21:18:16,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:16,714 INFO L225 Difference]: With dead ends: 3290 [2022-10-15 21:18:16,715 INFO L226 Difference]: Without dead ends: 1834 [2022-10-15 21:18:16,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 21:18:16,721 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 256 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 105 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:16,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 2149 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 582 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-10-15 21:18:16,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2022-10-15 21:18:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1492. [2022-10-15 21:18:16,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1136 states have (on average 1.4674295774647887) internal successors, (1667), 1223 states have internal predecessors, (1667), 216 states have call successors, (216), 58 states have call predecessors, (216), 58 states have return successors, (216), 216 states have call predecessors, (216), 216 states have call successors, (216) [2022-10-15 21:18:16,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2099 transitions. [2022-10-15 21:18:16,809 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2099 transitions. Word has length 46 [2022-10-15 21:18:16,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:16,809 INFO L495 AbstractCegarLoop]: Abstraction has 1492 states and 2099 transitions. [2022-10-15 21:18:16,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:18:16,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2099 transitions. [2022-10-15 21:18:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-15 21:18:16,811 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:16,811 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:18:16,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 21:18:16,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting set_led_bitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [start_isoc_chainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 79 more)] === [2022-10-15 21:18:16,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:16,813 INFO L85 PathProgramCache]: Analyzing trace with hash 33220227, now seen corresponding path program 1 times [2022-10-15 21:18:16,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:16,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836927414] [2022-10-15 21:18:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:16,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 21:18:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:18:17,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:17,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836927414] [2022-10-15 21:18:17,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836927414] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:17,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:17,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:18:17,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799180794] [2022-10-15 21:18:17,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:17,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:18:17,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:17,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:18:17,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:18:17,109 INFO L87 Difference]: Start difference. First operand 1492 states and 2099 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:18:21,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:18:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:22,046 INFO L93 Difference]: Finished difference Result 3121 states and 4384 transitions. [2022-10-15 21:18:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:18:22,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2022-10-15 21:18:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:22,058 INFO L225 Difference]: With dead ends: 3121 [2022-10-15 21:18:22,059 INFO L226 Difference]: Without dead ends: 1645 [2022-10-15 21:18:22,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:18:22,066 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 824 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 143 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:22,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1571 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 567 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-10-15 21:18:22,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2022-10-15 21:18:22,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1552. [2022-10-15 21:18:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1185 states have (on average 1.4649789029535865) internal successors, (1736), 1273 states have internal predecessors, (1736), 219 states have call successors, (219), 66 states have call predecessors, (219), 66 states have return successors, (219), 219 states have call predecessors, (219), 219 states have call successors, (219) [2022-10-15 21:18:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2174 transitions. [2022-10-15 21:18:22,198 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2174 transitions. Word has length 49 [2022-10-15 21:18:22,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:22,200 INFO L495 AbstractCegarLoop]: Abstraction has 1552 states and 2174 transitions. [2022-10-15 21:18:22,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:18:22,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2174 transitions. [2022-10-15 21:18:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-15 21:18:22,203 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:22,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:18:22,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 21:18:22,206 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [start_isoc_chainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, start_isoc_chainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 79 more)] === [2022-10-15 21:18:22,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1878062025, now seen corresponding path program 1 times [2022-10-15 21:18:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:22,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367695917] [2022-10-15 21:18:22,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:22,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:22,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:22,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-15 21:18:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 21:18:22,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:22,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367695917] [2022-10-15 21:18:22,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367695917] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:18:22,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020135109] [2022-10-15 21:18:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:22,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:18:22,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:18:22,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:18:22,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:18:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:23,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 2150 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:18:23,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:18:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 21:18:23,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:18:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 21:18:23,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020135109] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:18:23,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:18:23,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-15 21:18:23,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137749754] [2022-10-15 21:18:23,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:18:23,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:18:23,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:18:23,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:18:23,218 INFO L87 Difference]: Start difference. First operand 1552 states and 2174 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)