/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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:14:59,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:14:59,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:14:59,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:14:59,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:14:59,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:14:59,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:14:59,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:14:59,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:14:59,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:14:59,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:14:59,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:14:59,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:14:59,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:14:59,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:14:59,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:14:59,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:14:59,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:14:59,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:14:59,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:14:59,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:14:59,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:14:59,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:14:59,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:14:59,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:14:59,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:14:59,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:14:59,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:14:59,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:14:59,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:14:59,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:14:59,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:14:59,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:14:59,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:14:59,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:14:59,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:14:59,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:14:59,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:14:59,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:14:59,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:14:59,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:14:59,359 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 21:14:59,430 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:14:59,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:14:59,432 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:14:59,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:14:59,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:14:59,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:14:59,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:14:59,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:14:59,440 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:14:59,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:14:59,442 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:14:59,442 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:14:59,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:14:59,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:14:59,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:14:59,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:14:59,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:14:59,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:14:59,444 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:14:59,444 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:14:59,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:14:59,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:14:59,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:14:59,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:14:59,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:14:59,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:14:59,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:14:59,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:14:59,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:14:59,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:14:59,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:14:59,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:14:59,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:14:59,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:14:59,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:14:59,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:15:00,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:15:00,006 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:15:00,007 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:15:00,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-10-15 21:15:00,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055fd01cc/ba7255a13553430fb266039384a36623/FLAG5f5c03543 [2022-10-15 21:15:01,371 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:15:01,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-10-15 21:15:01,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055fd01cc/ba7255a13553430fb266039384a36623/FLAG5f5c03543 [2022-10-15 21:15:01,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055fd01cc/ba7255a13553430fb266039384a36623 [2022-10-15 21:15:01,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:15:01,639 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:15:01,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:15:01,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:15:01,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:15:01,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:15:01" (1/1) ... [2022-10-15 21:15:01,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31783a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:01, skipping insertion in model container [2022-10-15 21:15:01,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:15:01" (1/1) ... [2022-10-15 21:15:01,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:15:01,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:15:03,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2022-10-15 21:15:03,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:15:03,454 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:15:03,717 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i[163507,163520] [2022-10-15 21:15:03,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:15:04,095 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:15:04,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04 WrapperNode [2022-10-15 21:15:04,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:15:04,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:15:04,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:15:04,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:15:04,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,393 INFO L138 Inliner]: procedures = 176, calls = 448, calls flagged for inlining = 92, calls inlined = 85, statements flattened = 1783 [2022-10-15 21:15:04,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:15:04,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:15:04,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:15:04,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:15:04,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,638 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:15:04,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:15:04,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:15:04,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:15:04,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (1/1) ... [2022-10-15 21:15:04,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:15:04,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:15:04,757 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 21:15:04,807 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 21:15:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-10-15 21:15:04,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-10-15 21:15:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_15 [2022-10-15 21:15:04,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_15 [2022-10-15 21:15:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_poll [2022-10-15 21:15:04,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_poll [2022-10-15 21:15:04,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:15:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-10-15 21:15:04,882 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-10-15 21:15:04,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:15:04,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:15:04,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:15:04,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:15:04,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:15:04,883 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-10-15 21:15:04,883 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-10-15 21:15:04,884 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2022-10-15 21:15:04,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2022-10-15 21:15:04,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:15:04,884 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:15:04,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-10-15 21:15:04,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-10-15 21:15:04,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:15:04,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:15:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure spin_trylock_bh [2022-10-15 21:15:04,885 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_trylock_bh [2022-10-15 21:15:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-10-15 21:15:04,885 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-10-15 21:15:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-10-15 21:15:04,886 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-10-15 21:15:04,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-10-15 21:15:04,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-10-15 21:15:04,886 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_synctty_ioctl [2022-10-15 21:15:04,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_synctty_ioctl [2022-10-15 21:15:04,886 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:15:04,886 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:15:04,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:15:04,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:15:04,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:15:04,887 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-10-15 21:15:04,887 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-10-15 21:15:04,888 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_close [2022-10-15 21:15:04,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_close [2022-10-15 21:15:04,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-15 21:15:04,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-15 21:15:04,888 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-10-15 21:15:04,888 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-10-15 21:15:04,888 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_print_buffer [2022-10-15 21:15:04,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_print_buffer [2022-10-15 21:15:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:15:04,889 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:15:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:15:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-10-15 21:15:04,891 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-10-15 21:15:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-15 21:15:04,892 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-15 21:15:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:15:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:15:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:15:04,893 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-10-15 21:15:04,893 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-10-15 21:15:04,893 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-10-15 21:15:04,893 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-10-15 21:15:04,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:15:04,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-10-15 21:15:04,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-10-15 21:15:04,894 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-10-15 21:15:04,894 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-10-15 21:15:04,895 INFO L130 BoogieDeclarations]: Found specification of procedure sp_put [2022-10-15 21:15:04,895 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_put [2022-10-15 21:15:04,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:15:04,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:15:04,897 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-10-15 21:15:04,897 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-10-15 21:15:04,897 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_hangup [2022-10-15 21:15:04,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_hangup [2022-10-15 21:15:04,898 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-15 21:15:04,898 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-15 21:15:04,898 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-10-15 21:15:04,899 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-10-15 21:15:04,899 INFO L130 BoogieDeclarations]: Found specification of procedure sp_get [2022-10-15 21:15:04,899 INFO L138 BoogieDeclarations]: Found implementation of procedure sp_get [2022-10-15 21:15:04,899 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-10-15 21:15:04,899 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-10-15 21:15:04,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:15:04,899 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-10-15 21:15:04,900 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-10-15 21:15:04,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:15:04,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:15:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:15:04,901 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-15 21:15:04,901 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-15 21:15:04,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:15:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:15:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_sync_push [2022-10-15 21:15:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_sync_push [2022-10-15 21:15:05,501 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:15:05,511 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:15:05,700 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:15:07,402 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:15:07,420 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:15:07,447 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 21:15:07,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:15:07 BoogieIcfgContainer [2022-10-15 21:15:07,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:15:07,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:15:07,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:15:07,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:15:07,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:15:01" (1/3) ... [2022-10-15 21:15:07,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2287eed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:15:07, skipping insertion in model container [2022-10-15 21:15:07,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:04" (2/3) ... [2022-10-15 21:15:07,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2287eed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:15:07, skipping insertion in model container [2022-10-15 21:15:07,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:15:07" (3/3) ... [2022-10-15 21:15:07,470 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_synctty.ko-entry_point.cil.out.i [2022-10-15 21:15:07,504 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:15:07,504 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-10-15 21:15:07,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:15:07,656 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;@1a732bd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:15:07,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-10-15 21:15:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 689 states, 505 states have (on average 1.4198019801980197) internal successors, (717), 544 states have internal predecessors, (717), 120 states have call successors, (120), 40 states have call predecessors, (120), 39 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) [2022-10-15 21:15:07,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-15 21:15:07,687 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:07,688 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:07,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:15:07,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1082175730, now seen corresponding path program 1 times [2022-10-15 21:15:07,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:07,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606279456] [2022-10-15 21:15:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:07,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:15:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:15:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:08,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:15:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:15:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:15:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:08,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:15:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:15:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:15:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:08,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:15:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-10-15 21:15:08,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:08,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606279456] [2022-10-15 21:15:08,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606279456] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:08,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:08,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:15:08,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113677846] [2022-10-15 21:15:08,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:08,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:15:08,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:15:08,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:15:08,784 INFO L87 Difference]: Start difference. First operand has 689 states, 505 states have (on average 1.4198019801980197) internal successors, (717), 544 states have internal predecessors, (717), 120 states have call successors, (120), 40 states have call predecessors, (120), 39 states have return successors, (116), 114 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:15:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:11,033 INFO L93 Difference]: Finished difference Result 1913 states and 2749 transitions. [2022-10-15 21:15:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:15:11,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 78 [2022-10-15 21:15:11,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:11,068 INFO L225 Difference]: With dead ends: 1913 [2022-10-15 21:15:11,068 INFO L226 Difference]: Without dead ends: 1194 [2022-10-15 21:15:11,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 21:15:11,085 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 929 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:11,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 1925 Invalid, 996 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [242 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-15 21:15:11,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-10-15 21:15:11,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1013. [2022-10-15 21:15:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 764 states have (on average 1.3979057591623036) internal successors, (1068), 795 states have internal predecessors, (1068), 167 states have call successors, (167), 62 states have call predecessors, (167), 62 states have return successors, (167), 164 states have call predecessors, (167), 167 states have call successors, (167) [2022-10-15 21:15:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1402 transitions. [2022-10-15 21:15:11,361 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1402 transitions. Word has length 78 [2022-10-15 21:15:11,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:11,364 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1402 transitions. [2022-10-15 21:15:11,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-15 21:15:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1402 transitions. [2022-10-15 21:15:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-15 21:15:11,380 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:11,381 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:15:11,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:15:11,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:15:11,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:11,383 INFO L85 PathProgramCache]: Analyzing trace with hash -338834158, now seen corresponding path program 1 times [2022-10-15 21:15:11,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:11,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743832168] [2022-10-15 21:15:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:11,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:15:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:15:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:15:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:15:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:15:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:15:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:15:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:15:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:15:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-15 21:15:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-15 21:15:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-10-15 21:15:11,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:11,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743832168] [2022-10-15 21:15:11,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743832168] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:11,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:11,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:15:11,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501616928] [2022-10-15 21:15:11,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:11,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:15:11,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:11,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:15:11,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:15:11,741 INFO L87 Difference]: Start difference. First operand 1013 states and 1402 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-15 21:15:13,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:13,746 INFO L93 Difference]: Finished difference Result 2673 states and 3691 transitions. [2022-10-15 21:15:13,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:15:13,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-10-15 21:15:13,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:13,764 INFO L225 Difference]: With dead ends: 2673 [2022-10-15 21:15:13,764 INFO L226 Difference]: Without dead ends: 1684 [2022-10-15 21:15:13,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 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 21:15:13,771 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 842 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:13,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 2354 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-15 21:15:13,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2022-10-15 21:15:13,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1447. [2022-10-15 21:15:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1102 states have (on average 1.3929219600725953) internal successors, (1535), 1142 states have internal predecessors, (1535), 228 states have call successors, (228), 97 states have call predecessors, (228), 97 states have return successors, (228), 223 states have call predecessors, (228), 228 states have call successors, (228) [2022-10-15 21:15:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 1991 transitions. [2022-10-15 21:15:13,891 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 1991 transitions. Word has length 102 [2022-10-15 21:15:13,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:13,892 INFO L495 AbstractCegarLoop]: Abstraction has 1447 states and 1991 transitions. [2022-10-15 21:15:13,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-15 21:15:13,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 1991 transitions. [2022-10-15 21:15:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-10-15 21:15:13,896 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:13,896 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-10-15 21:15:13,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:15:13,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:15:13,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:13,898 INFO L85 PathProgramCache]: Analyzing trace with hash -816115865, now seen corresponding path program 1 times [2022-10-15 21:15:13,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:13,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779448034] [2022-10-15 21:15:13,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:13,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:15:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:15:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:15:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:15:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:15:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:15:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:15:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:15:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:15:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 21:15:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-15 21:15:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-10-15 21:15:14,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:14,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779448034] [2022-10-15 21:15:14,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779448034] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:14,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:14,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:14,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921074066] [2022-10-15 21:15:14,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:14,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:14,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:14,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:14,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:14,379 INFO L87 Difference]: Start difference. First operand 1447 states and 1991 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-15 21:15:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:17,613 INFO L93 Difference]: Finished difference Result 4689 states and 6528 transitions. [2022-10-15 21:15:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:17,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105 [2022-10-15 21:15:17,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:17,645 INFO L225 Difference]: With dead ends: 4689 [2022-10-15 21:15:17,645 INFO L226 Difference]: Without dead ends: 3277 [2022-10-15 21:15:17,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:17,655 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 1375 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 3768 SdHoareTripleChecker+Invalid, 2078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:17,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 3768 Invalid, 2078 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [394 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-10-15 21:15:17,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2022-10-15 21:15:17,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 1451. [2022-10-15 21:15:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1106 states have (on average 1.391500904159132) internal successors, (1539), 1146 states have internal predecessors, (1539), 228 states have call successors, (228), 97 states have call predecessors, (228), 97 states have return successors, (228), 223 states have call predecessors, (228), 228 states have call successors, (228) [2022-10-15 21:15:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1995 transitions. [2022-10-15 21:15:17,837 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1995 transitions. Word has length 105 [2022-10-15 21:15:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:17,838 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 1995 transitions. [2022-10-15 21:15:17,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-15 21:15:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1995 transitions. [2022-10-15 21:15:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-10-15 21:15:17,842 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:17,842 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2022-10-15 21:15:17,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:15:17,843 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:15:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:17,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1978972381, now seen corresponding path program 1 times [2022-10-15 21:15:17,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:17,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858696549] [2022-10-15 21:15:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:17,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:15:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:15:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:15:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:15:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:15:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:15:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:15:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:15:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:15:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 21:15:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-15 21:15:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-15 21:15:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-10-15 21:15:18,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:18,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858696549] [2022-10-15 21:15:18,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858696549] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:18,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:18,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:18,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150264282] [2022-10-15 21:15:18,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:18,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:18,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:18,245 INFO L87 Difference]: Start difference. First operand 1451 states and 1995 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-15 21:15:21,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:21,196 INFO L93 Difference]: Finished difference Result 3912 states and 5435 transitions. [2022-10-15 21:15:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:21,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 109 [2022-10-15 21:15:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:21,217 INFO L225 Difference]: With dead ends: 3912 [2022-10-15 21:15:21,218 INFO L226 Difference]: Without dead ends: 2496 [2022-10-15 21:15:21,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:15:21,226 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 1620 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:21,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1675 Valid, 2270 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-15 21:15:21,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-10-15 21:15:21,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2128. [2022-10-15 21:15:21,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 1650 states have (on average 1.3927272727272728) internal successors, (2298), 1696 states have internal predecessors, (2298), 310 states have call successors, (310), 148 states have call predecessors, (310), 148 states have return successors, (310), 304 states have call predecessors, (310), 310 states have call successors, (310) [2022-10-15 21:15:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 2918 transitions. [2022-10-15 21:15:21,477 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 2918 transitions. Word has length 109 [2022-10-15 21:15:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:21,478 INFO L495 AbstractCegarLoop]: Abstraction has 2128 states and 2918 transitions. [2022-10-15 21:15:21,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-15 21:15:21,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 2918 transitions. [2022-10-15 21:15:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-10-15 21:15:21,485 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:21,485 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:21,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:15:21,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:15:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:21,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1284572494, now seen corresponding path program 1 times [2022-10-15 21:15:21,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:21,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583477558] [2022-10-15 21:15:21,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:21,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:15:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:15:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:15:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:15:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:15:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:15:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:15:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:15:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:15:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 21:15:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-15 21:15:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-15 21:15:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:21,955 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-10-15 21:15:21,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:21,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583477558] [2022-10-15 21:15:21,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583477558] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:21,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:21,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:15:21,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303736813] [2022-10-15 21:15:21,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:21,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:21,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:21,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:21,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:21,960 INFO L87 Difference]: Start difference. First operand 2128 states and 2918 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-15 21:15:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:24,204 INFO L93 Difference]: Finished difference Result 3452 states and 4750 transitions. [2022-10-15 21:15:24,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:15:24,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2022-10-15 21:15:24,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:24,230 INFO L225 Difference]: With dead ends: 3452 [2022-10-15 21:15:24,230 INFO L226 Difference]: Without dead ends: 3450 [2022-10-15 21:15:24,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:24,235 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 1312 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:24,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 2324 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-15 21:15:24,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2022-10-15 21:15:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 2933. [2022-10-15 21:15:24,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2293 states have (on average 1.384212821631051) internal successors, (3174), 2347 states have internal predecessors, (3174), 417 states have call successors, (417), 203 states have call predecessors, (417), 203 states have return successors, (417), 410 states have call predecessors, (417), 417 states have call successors, (417) [2022-10-15 21:15:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 4008 transitions. [2022-10-15 21:15:24,494 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 4008 transitions. Word has length 116 [2022-10-15 21:15:24,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:24,495 INFO L495 AbstractCegarLoop]: Abstraction has 2933 states and 4008 transitions. [2022-10-15 21:15:24,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-15 21:15:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 4008 transitions. [2022-10-15 21:15:24,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-15 21:15:24,499 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:24,499 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:24,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 21:15:24,500 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:15:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:24,501 INFO L85 PathProgramCache]: Analyzing trace with hash -303571000, now seen corresponding path program 1 times [2022-10-15 21:15:24,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:24,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169052667] [2022-10-15 21:15:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:24,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:15:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:15:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:15:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:15:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:15:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:15:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:15:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:15:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:15:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 21:15:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-15 21:15:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-15 21:15:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-10-15 21:15:24,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:24,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169052667] [2022-10-15 21:15:24,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169052667] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:24,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:24,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:15:24,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21005325] [2022-10-15 21:15:24,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:24,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:15:24,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:24,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:15:24,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:15:24,819 INFO L87 Difference]: Start difference. First operand 2933 states and 4008 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-15 21:15:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:26,368 INFO L93 Difference]: Finished difference Result 6242 states and 8680 transitions. [2022-10-15 21:15:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:15:26,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 124 [2022-10-15 21:15:26,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:26,402 INFO L225 Difference]: With dead ends: 6242 [2022-10-15 21:15:26,403 INFO L226 Difference]: Without dead ends: 3377 [2022-10-15 21:15:26,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 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 21:15:26,422 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 246 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:26,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1857 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-15 21:15:26,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2022-10-15 21:15:26,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 2940. [2022-10-15 21:15:26,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2300 states have (on average 1.3830434782608696) internal successors, (3181), 2354 states have internal predecessors, (3181), 417 states have call successors, (417), 203 states have call predecessors, (417), 203 states have return successors, (417), 410 states have call predecessors, (417), 417 states have call successors, (417) [2022-10-15 21:15:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 4015 transitions. [2022-10-15 21:15:26,774 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 4015 transitions. Word has length 124 [2022-10-15 21:15:26,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:26,776 INFO L495 AbstractCegarLoop]: Abstraction has 2940 states and 4015 transitions. [2022-10-15 21:15:26,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-15 21:15:26,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 4015 transitions. [2022-10-15 21:15:26,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-10-15 21:15:26,782 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:26,782 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:26,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 21:15:26,783 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:15:26,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash -820840693, now seen corresponding path program 1 times [2022-10-15 21:15:26,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:26,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501795839] [2022-10-15 21:15:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:26,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:15:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:15:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:15:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:15:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:15:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:15:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:15:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:15:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:15:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 21:15:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-15 21:15:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-10-15 21:15:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-10-15 21:15:27,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:27,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501795839] [2022-10-15 21:15:27,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501795839] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:27,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:27,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:27,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330814376] [2022-10-15 21:15:27,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:27,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:27,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:27,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:27,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:27,552 INFO L87 Difference]: Start difference. First operand 2940 states and 4015 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, (17), 3 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-15 21:15:30,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:30,256 INFO L93 Difference]: Finished difference Result 9329 states and 12923 transitions. [2022-10-15 21:15:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 21:15:30,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-10-15 21:15:30,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:30,313 INFO L225 Difference]: With dead ends: 9329 [2022-10-15 21:15:30,313 INFO L226 Difference]: Without dead ends: 6457 [2022-10-15 21:15:30,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:30,331 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 1257 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:30,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 2424 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-15 21:15:30,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2022-10-15 21:15:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 5772. [2022-10-15 21:15:30,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5772 states, 4514 states have (on average 1.3695170580416482) internal successors, (6182), 4607 states have internal predecessors, (6182), 821 states have call successors, (821), 402 states have call predecessors, (821), 417 states have return successors, (858), 818 states have call predecessors, (858), 821 states have call successors, (858) [2022-10-15 21:15:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 7861 transitions. [2022-10-15 21:15:30,957 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 7861 transitions. Word has length 125 [2022-10-15 21:15:30,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:30,958 INFO L495 AbstractCegarLoop]: Abstraction has 5772 states and 7861 transitions. [2022-10-15 21:15:30,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-15 21:15:30,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 7861 transitions. [2022-10-15 21:15:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-10-15 21:15:30,965 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:30,966 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:30,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 21:15:30,967 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:15:30,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash 391146376, now seen corresponding path program 1 times [2022-10-15 21:15:30,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:30,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050137264] [2022-10-15 21:15:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:30,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:15:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:15:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:15:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:15:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:15:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:15:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:15:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:15:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:15:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 21:15:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-15 21:15:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-15 21:15:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-10-15 21:15:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-10-15 21:15:31,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:31,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050137264] [2022-10-15 21:15:31,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050137264] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:15:31,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763582345] [2022-10-15 21:15:31,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:31,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:15:31,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:15:31,426 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 21:15:31,441 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 21:15:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:31,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 21:15:31,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:15:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-10-15 21:15:32,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:15:32,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763582345] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:32,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:15:32,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-10-15 21:15:32,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231779284] [2022-10-15 21:15:32,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:32,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:32,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:32,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:32,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:15:32,071 INFO L87 Difference]: Start difference. First operand 5772 states and 7861 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-15 21:15:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:33,427 INFO L93 Difference]: Finished difference Result 14109 states and 19350 transitions. [2022-10-15 21:15:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:15:33,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2022-10-15 21:15:33,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:33,522 INFO L225 Difference]: With dead ends: 14109 [2022-10-15 21:15:33,523 INFO L226 Difference]: Without dead ends: 9932 [2022-10-15 21:15:33,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-10-15 21:15:33,540 INFO L413 NwaCegarLoop]: 1819 mSDtfsCounter, 1372 mSDsluCounter, 3837 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 5656 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:33,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 5656 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 21:15:33,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9932 states. [2022-10-15 21:15:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9932 to 5780. [2022-10-15 21:15:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5780 states, 4522 states have (on average 1.3688633348076074) internal successors, (6190), 4607 states have internal predecessors, (6190), 821 states have call successors, (821), 402 states have call predecessors, (821), 417 states have return successors, (858), 818 states have call predecessors, (858), 821 states have call successors, (858) [2022-10-15 21:15:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5780 states to 5780 states and 7869 transitions. [2022-10-15 21:15:34,207 INFO L78 Accepts]: Start accepts. Automaton has 5780 states and 7869 transitions. Word has length 135 [2022-10-15 21:15:34,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:34,208 INFO L495 AbstractCegarLoop]: Abstraction has 5780 states and 7869 transitions. [2022-10-15 21:15:34,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-15 21:15:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5780 states and 7869 transitions. [2022-10-15 21:15:34,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-10-15 21:15:34,213 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:34,214 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:34,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 21:15:34,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:15:34,430 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:15:34,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:34,431 INFO L85 PathProgramCache]: Analyzing trace with hash -874129244, now seen corresponding path program 1 times [2022-10-15 21:15:34,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:34,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447204371] [2022-10-15 21:15:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:34,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:15:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:15:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:15:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:15:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:15:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:15:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:15:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:15:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:15:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 21:15:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-15 21:15:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-15 21:15:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-15 21:15:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-10-15 21:15:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-10-15 21:15:35,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:35,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447204371] [2022-10-15 21:15:35,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447204371] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:35,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:35,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 21:15:35,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819814848] [2022-10-15 21:15:35,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:35,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 21:15:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 21:15:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:35,149 INFO L87 Difference]: Start difference. First operand 5780 states and 7869 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-10-15 21:15:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:38,660 INFO L93 Difference]: Finished difference Result 12147 states and 16692 transitions. [2022-10-15 21:15:38,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:15:38,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 148 [2022-10-15 21:15:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:38,707 INFO L225 Difference]: With dead ends: 12147 [2022-10-15 21:15:38,707 INFO L226 Difference]: Without dead ends: 6435 [2022-10-15 21:15:38,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:15:38,730 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 450 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:38,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 3340 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-15 21:15:38,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6435 states. [2022-10-15 21:15:39,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6435 to 5770. [2022-10-15 21:15:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5770 states, 4502 states have (on average 1.3638382940915148) internal successors, (6140), 4592 states have internal predecessors, (6140), 821 states have call successors, (821), 402 states have call predecessors, (821), 427 states have return successors, (874), 823 states have call predecessors, (874), 821 states have call successors, (874) [2022-10-15 21:15:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 7835 transitions. [2022-10-15 21:15:39,522 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 7835 transitions. Word has length 148 [2022-10-15 21:15:39,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:15:39,523 INFO L495 AbstractCegarLoop]: Abstraction has 5770 states and 7835 transitions. [2022-10-15 21:15:39,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-10-15 21:15:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 7835 transitions. [2022-10-15 21:15:39,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-10-15 21:15:39,530 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:39,531 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:39,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 21:15:39,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_set_removeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_set_removeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:15:39,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash 868644824, now seen corresponding path program 1 times [2022-10-15 21:15:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:39,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471126614] [2022-10-15 21:15:39,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:15:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:15:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:15:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:15:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:15:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:15:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:15:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:15:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:15:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-15 21:15:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-15 21:15:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-15 21:15:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:15:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-15 21:15:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-10-15 21:15:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:15:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-10-15 21:15:40,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:40,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471126614] [2022-10-15 21:15:40,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471126614] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:40,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:40,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 21:15:40,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301758231] [2022-10-15 21:15:40,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:40,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 21:15:40,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:40,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 21:15:40,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:15:40,286 INFO L87 Difference]: Start difference. First operand 5770 states and 7835 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-10-15 21:15:44,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:15:44,130 INFO L93 Difference]: Finished difference Result 12396 states and 16997 transitions. [2022-10-15 21:15:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 21:15:44,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 155 [2022-10-15 21:15:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:15:44,162 INFO L225 Difference]: With dead ends: 12396 [2022-10-15 21:15:44,162 INFO L226 Difference]: Without dead ends: 6694 [2022-10-15 21:15:44,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:15:44,183 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 1770 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 2770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:15:44,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 3041 Invalid, 2770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [742 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-10-15 21:15:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states.