./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-via-via-velocity.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-via-via-velocity.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a41bf48b73cd2164f735edf39a528a497b61e31513d551cd7353a3ff3988840b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 11:44:31,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 11:44:31,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 11:44:31,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 11:44:31,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 11:44:31,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 11:44:31,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 11:44:31,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 11:44:31,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 11:44:31,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 11:44:31,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 11:44:31,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 11:44:31,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 11:44:31,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 11:44:31,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 11:44:31,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 11:44:31,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 11:44:31,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 11:44:31,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 11:44:31,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 11:44:31,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 11:44:31,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 11:44:31,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 11:44:31,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 11:44:31,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 11:44:31,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 11:44:31,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 11:44:31,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 11:44:31,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 11:44:31,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 11:44:31,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 11:44:31,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 11:44:31,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 11:44:31,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 11:44:31,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 11:44:31,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 11:44:31,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 11:44:31,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 11:44:31,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 11:44:31,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 11:44:31,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 11:44:31,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 11:44:31,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 11:44:31,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 11:44:31,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 11:44:31,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 11:44:31,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 11:44:31,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 11:44:31,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 11:44:31,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 11:44:31,713 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 11:44:31,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 11:44:31,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 11:44:31,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 11:44:31,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 11:44:31,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 11:44:31,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 11:44:31,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 11:44:31,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 11:44:31,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 11:44:31,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 11:44:31,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 11:44:31,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 11:44:31,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 11:44:31,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 11:44:31,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 11:44:31,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 11:44:31,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 11:44:31,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 11:44:31,716 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 11:44:31,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 11:44:31,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 11:44:31,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 11:44:31,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a41bf48b73cd2164f735edf39a528a497b61e31513d551cd7353a3ff3988840b [2021-11-17 11:44:31,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 11:44:31,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 11:44:31,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 11:44:31,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 11:44:31,922 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 11:44:31,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-via-via-velocity.cil.i [2021-11-17 11:44:31,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ca563e3c/67dd5c1a1a414665963bf5f7e4c6e362/FLAG14a2e97c0 [2021-11-17 11:44:32,613 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 11:44:32,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-via-via-velocity.cil.i [2021-11-17 11:44:32,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ca563e3c/67dd5c1a1a414665963bf5f7e4c6e362/FLAG14a2e97c0 [2021-11-17 11:44:32,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ca563e3c/67dd5c1a1a414665963bf5f7e4c6e362 [2021-11-17 11:44:32,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 11:44:33,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 11:44:33,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 11:44:33,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 11:44:33,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 11:44:33,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:44:32" (1/1) ... [2021-11-17 11:44:33,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689c7857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:33, skipping insertion in model container [2021-11-17 11:44:33,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:44:32" (1/1) ... [2021-11-17 11:44:33,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 11:44:33,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 11:44:35,970 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-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-via-via-velocity.cil.i[465369,465382] [2021-11-17 11:44:35,972 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-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-via-via-velocity.cil.i[465514,465527] [2021-11-17 11:44:36,003 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 11:44:36,073 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 11:44:36,400 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-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-via-via-velocity.cil.i[465369,465382] [2021-11-17 11:44:36,401 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-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-via-via-velocity.cil.i[465514,465527] [2021-11-17 11:44:36,408 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 11:44:36,605 INFO L208 MainTranslator]: Completed translation [2021-11-17 11:44:36,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36 WrapperNode [2021-11-17 11:44:36,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 11:44:36,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 11:44:36,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 11:44:36,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 11:44:36,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36" (1/1) ... [2021-11-17 11:44:36,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36" (1/1) ... [2021-11-17 11:44:36,939 INFO L137 Inliner]: procedures = 617, calls = 3888, calls flagged for inlining = 331, calls inlined = 293, statements flattened = 8623 [2021-11-17 11:44:36,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 11:44:36,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 11:44:36,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 11:44:36,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 11:44:36,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36" (1/1) ... [2021-11-17 11:44:36,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36" (1/1) ... [2021-11-17 11:44:36,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36" (1/1) ... [2021-11-17 11:44:37,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36" (1/1) ... [2021-11-17 11:44:37,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36" (1/1) ... [2021-11-17 11:44:37,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36" (1/1) ... [2021-11-17 11:44:37,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36" (1/1) ... [2021-11-17 11:44:37,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 11:44:37,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 11:44:37,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 11:44:37,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 11:44:37,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36" (1/1) ... [2021-11-17 11:44:37,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 11:44:37,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:44:37,315 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) [2021-11-17 11:44:37,320 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 [2021-11-17 11:44:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-17 11:44:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-17 11:44:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 11:44:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 11:44:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-17 11:44:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-17 11:44:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-17 11:44:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-17 11:44:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 11:44:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 11:44:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-17 11:44:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-17 11:44:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-17 11:44:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-17 11:44:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-17 11:44:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-17 11:44:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_resume [2021-11-17 11:44:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_resume [2021-11-17 11:44:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_print_link_status [2021-11-17 11:44:37,347 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_print_link_status [2021-11-17 11:44:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_init_registers [2021-11-17 11:44:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_init_registers [2021-11-17 11:44:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_mii_write [2021-11-17 11:44:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_mii_write [2021-11-17 11:44:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-17 11:44:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-17 11:44:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-17 11:44:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-17 11:44:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-17 11:44:37,348 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-17 11:44:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-17 11:44:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-17 11:44:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_platform_remove [2021-11-17 11:44:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_platform_remove [2021-11-17 11:44:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-17 11:44:37,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-17 11:44:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure enable_flow_control_ability [2021-11-17 11:44:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_flow_control_ability [2021-11-17 11:44:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 11:44:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-17 11:44:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-17 11:44:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure set_pending_timer_val [2021-11-17 11:44:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure set_pending_timer_val [2021-11-17 11:44:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-17 11:44:37,350 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-17 11:44:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_110 [2021-11-17 11:44:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_110 [2021-11-17 11:44:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 11:44:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-17 11:44:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-17 11:44:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_ethtool_up [2021-11-17 11:44:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_ethtool_up [2021-11-17 11:44:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure mac_wol_reset [2021-11-17 11:44:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure mac_wol_reset [2021-11-17 11:44:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 11:44:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_ethtool_down [2021-11-17 11:44:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_ethtool_down [2021-11-17 11:44:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-17 11:44:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-17 11:44:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure mac_set_vlan_cam_mask [2021-11-17 11:44:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure mac_set_vlan_cam_mask [2021-11-17 11:44:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 11:44:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-17 11:44:37,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-17 11:44:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-17 11:44:37,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-17 11:44:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 11:44:37,354 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 11:44:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-17 11:44:37,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-17 11:44:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-17 11:44:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-17 11:44:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-17 11:44:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-17 11:44:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-17 11:44:37,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-17 11:44:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_get_opt_media_mode [2021-11-17 11:44:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_get_opt_media_mode [2021-11-17 11:44:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_tx_srv [2021-11-17 11:44:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_tx_srv [2021-11-17 11:44:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-17 11:44:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-17 11:44:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-17 11:44:37,356 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-17 11:44:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_rx_refill [2021-11-17 11:44:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_rx_refill [2021-11-17 11:44:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure mii_set_auto_on [2021-11-17 11:44:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_set_auto_on [2021-11-17 11:44:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 11:44:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-17 11:44:37,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_calloc [2021-11-17 11:44:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_save_context [2021-11-17 11:44:37,358 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_save_context [2021-11-17 11:44:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-17 11:44:37,358 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-17 11:44:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 11:44:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-17 11:44:37,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-17 11:44:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-17 11:44:37,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-17 11:44:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 11:44:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 11:44:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 11:44:37,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 11:44:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-17 11:44:37,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-17 11:44:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-17 11:44:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-17 11:44:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-17 11:44:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-17 11:44:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_update_hw_mibs [2021-11-17 11:44:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_update_hw_mibs [2021-11-17 11:44:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_shutdown [2021-11-17 11:44:37,361 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_shutdown [2021-11-17 11:44:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-17 11:44:37,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-17 11:44:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure setup_queue_timers [2021-11-17 11:44:37,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_queue_timers [2021-11-17 11:44:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-17 11:44:37,363 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-17 11:44:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-17 11:44:37,365 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-17 11:44:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_free_rd_ring [2021-11-17 11:44:37,365 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_free_rd_ring [2021-11-17 11:44:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-17 11:44:37,366 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-17 11:44:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-17 11:44:37,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-17 11:44:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_free_dma_rings [2021-11-17 11:44:37,370 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_free_dma_rings [2021-11-17 11:44:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure safe_disable_mii_autopoll [2021-11-17 11:44:37,370 INFO L138 BoogieDeclarations]: Found implementation of procedure safe_disable_mii_autopoll [2021-11-17 11:44:37,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-17 11:44:37,371 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-17 11:44:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure get_pending_timer_val [2021-11-17 11:44:37,371 INFO L138 BoogieDeclarations]: Found implementation of procedure get_pending_timer_val [2021-11-17 11:44:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_unregister_notifier [2021-11-17 11:44:37,371 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_unregister_notifier [2021-11-17 11:44:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-17 11:44:37,371 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-17 11:44:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-17 11:44:37,371 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-17 11:44:37,371 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-17 11:44:37,372 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-17 11:44:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-17 11:44:37,372 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-17 11:44:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_104 [2021-11-17 11:44:37,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_104 [2021-11-17 11:44:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 11:44:37,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 11:44:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_set_media_mode [2021-11-17 11:44:37,372 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_set_media_mode [2021-11-17 11:44:37,372 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_init_cam_filter [2021-11-17 11:44:37,373 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_init_cam_filter [2021-11-17 11:44:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 11:44:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_probe [2021-11-17 11:44:37,373 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_probe [2021-11-17 11:44:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 11:44:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 11:44:37,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 11:44:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_pci_remove [2021-11-17 11:44:37,373 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_pci_remove [2021-11-17 11:44:37,373 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-17 11:44:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-17 11:44:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-17 11:44:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-17 11:44:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_velocity_info [2021-11-17 11:44:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_velocity_info [2021-11-17 11:44:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_init_rings [2021-11-17 11:44:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_init_rings [2021-11-17 11:44:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-17 11:44:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-17 11:44:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure enable_mii_autopoll [2021-11-17 11:44:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_mii_autopoll [2021-11-17 11:44:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-17 11:44:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-17 11:44:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 11:44:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 11:44:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-17 11:44:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-17 11:44:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-17 11:44:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-17 11:44:37,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-17 11:44:37,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-17 11:44:37,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-17 11:44:37,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-17 11:44:37,376 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-17 11:44:37,376 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-17 11:44:37,376 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-17 11:44:37,376 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-17 11:44:37,376 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-17 11:44:37,376 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-17 11:44:37,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 11:44:37,377 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_set_int_opt [2021-11-17 11:44:37,377 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_set_int_opt [2021-11-17 11:44:37,377 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-17 11:44:37,377 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-17 11:44:37,377 INFO L130 BoogieDeclarations]: Found specification of procedure mac_set_cam_mask [2021-11-17 11:44:37,377 INFO L138 BoogieDeclarations]: Found implementation of procedure mac_set_cam_mask [2021-11-17 11:44:37,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 11:44:37,377 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_suspend [2021-11-17 11:44:37,377 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_suspend [2021-11-17 11:44:37,378 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-17 11:44:37,378 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-17 11:44:37,378 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_get_ip [2021-11-17 11:44:37,378 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_get_ip [2021-11-17 11:44:37,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_108 [2021-11-17 11:44:37,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_108 [2021-11-17 11:44:37,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 11:44:37,378 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_get_link [2021-11-17 11:44:37,378 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_get_link [2021-11-17 11:44:37,378 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-17 11:44:37,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-17 11:44:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-17 11:44:37,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-17 11:44:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure setup_adaptive_interrupts [2021-11-17 11:44:37,379 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_adaptive_interrupts [2021-11-17 11:44:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-17 11:44:37,379 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-17 11:44:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-17 11:44:37,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-17 11:44:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 11:44:37,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 11:44:37,380 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_set_power_state [2021-11-17 11:44:37,380 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_set_power_state [2021-11-17 11:44:37,380 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_close [2021-11-17 11:44:37,380 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_close [2021-11-17 11:44:37,380 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-17 11:44:37,380 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-17 11:44:37,380 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_set_bool_opt [2021-11-17 11:44:37,380 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_set_bool_opt [2021-11-17 11:44:37,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_103 [2021-11-17 11:44:37,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_103 [2021-11-17 11:44:37,381 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-17 11:44:37,381 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-17 11:44:37,381 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-17 11:44:37,381 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-17 11:44:37,381 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-17 11:44:37,381 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-17 11:44:37,381 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 11:44:37,381 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 11:44:37,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 11:44:37,381 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_free_rings [2021-11-17 11:44:37,382 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_free_rings [2021-11-17 11:44:37,385 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_intr [2021-11-17 11:44:37,385 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_intr [2021-11-17 11:44:37,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 11:44:37,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 11:44:37,385 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-17 11:44:37,385 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-17 11:44:37,385 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_remove [2021-11-17 11:44:37,385 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_remove [2021-11-17 11:44:37,385 INFO L130 BoogieDeclarations]: Found specification of procedure check_connection_type [2021-11-17 11:44:37,386 INFO L138 BoogieDeclarations]: Found implementation of procedure check_connection_type [2021-11-17 11:44:37,386 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-17 11:44:37,386 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-17 11:44:37,386 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_init_rx_ring_indexes [2021-11-17 11:44:37,387 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_init_rx_ring_indexes [2021-11-17 11:44:37,387 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_mii_read [2021-11-17 11:44:37,387 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_mii_read [2021-11-17 11:44:37,387 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_open [2021-11-17 11:44:37,387 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_open [2021-11-17 11:44:37,387 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_give_many_rx_descs [2021-11-17 11:44:37,387 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_give_many_rx_descs [2021-11-17 11:44:37,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-17 11:44:37,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-17 11:44:37,387 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_set_multi [2021-11-17 11:44:37,388 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_set_multi [2021-11-17 11:44:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-17 11:44:37,388 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-17 11:44:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_platform_probe [2021-11-17 11:44:37,388 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_platform_probe [2021-11-17 11:44:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-17 11:44:37,388 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-17 11:44:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 11:44:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-17 11:44:37,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-17 11:44:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_velocity_info [2021-11-17 11:44:37,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_velocity_info [2021-11-17 11:44:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure velocity_poll_controller [2021-11-17 11:44:37,389 INFO L138 BoogieDeclarations]: Found implementation of procedure velocity_poll_controller [2021-11-17 11:44:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-17 11:44:37,389 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-17 11:44:38,253 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 11:44:38,258 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 11:44:48,514 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 11:57:06,566 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 11:57:06,583 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 11:57:06,583 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-17 11:57:06,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:57:06 BoogieIcfgContainer [2021-11-17 11:57:06,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 11:57:06,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 11:57:06,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 11:57:06,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 11:57:06,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:44:32" (1/3) ... [2021-11-17 11:57:06,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1512cbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:57:06, skipping insertion in model container [2021-11-17 11:57:06,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:44:36" (2/3) ... [2021-11-17 11:57:06,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1512cbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:57:06, skipping insertion in model container [2021-11-17 11:57:06,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:57:06" (3/3) ... [2021-11-17 11:57:06,594 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-via-via-velocity.cil.i [2021-11-17 11:57:06,598 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 11:57:06,598 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 11:57:06,654 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 11:57:06,660 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-17 11:57:06,661 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 11:57:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 2844 states, 1888 states have (on average 1.2817796610169492) internal successors, (2420), 1966 states have internal predecessors, (2420), 824 states have call successors, (824), 133 states have call predecessors, (824), 132 states have return successors, (817), 793 states have call predecessors, (817), 817 states have call successors, (817) [2021-11-17 11:57:06,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-17 11:57:06,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:06,750 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:06,750 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:06,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash -250982923, now seen corresponding path program 1 times [2021-11-17 11:57:06,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:06,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604979302] [2021-11-17 11:57:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:06,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:07,412 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:07,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487229739] [2021-11-17 11:57:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:07,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:07,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:07,414 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) [2021-11-17 11:57:07,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-17 11:57:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:57:08,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 4043 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:57:08,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:57:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:57:10,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:57:10,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:57:10,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604979302] [2021-11-17 11:57:10,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:57:10,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487229739] [2021-11-17 11:57:10,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487229739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:57:10,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:57:10,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:57:10,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715619304] [2021-11-17 11:57:10,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:57:10,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:57:10,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:57:10,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:57:10,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:10,290 INFO L87 Difference]: Start difference. First operand has 2844 states, 1888 states have (on average 1.2817796610169492) internal successors, (2420), 1966 states have internal predecessors, (2420), 824 states have call successors, (824), 133 states have call predecessors, (824), 132 states have return successors, (817), 793 states have call predecessors, (817), 817 states have call successors, (817) Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:57:10,475 INFO L93 Difference]: Finished difference Result 5641 states and 8125 transitions. [2021-11-17 11:57:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:57:10,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 227 [2021-11-17 11:57:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:57:10,502 INFO L225 Difference]: With dead ends: 5641 [2021-11-17 11:57:10,502 INFO L226 Difference]: Without dead ends: 2749 [2021-11-17 11:57:10,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:10,524 INFO L933 BasicCegarLoop]: 4001 mSDtfsCounter, 3847 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3847 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:57:10,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3847 Valid, 4001 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:57:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-17 11:57:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2021-11-17 11:57:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1828 states have (on average 1.2696936542669583) internal successors, (2321), 1899 states have internal predecessors, (2321), 790 states have call successors, (790), 130 states have call predecessors, (790), 130 states have return successors, (790), 766 states have call predecessors, (790), 790 states have call successors, (790) [2021-11-17 11:57:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3901 transitions. [2021-11-17 11:57:10,660 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3901 transitions. Word has length 227 [2021-11-17 11:57:10,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:57:10,662 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3901 transitions. [2021-11-17 11:57:10,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:10,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3901 transitions. [2021-11-17 11:57:10,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-17 11:57:10,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:10,669 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:10,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-17 11:57:10,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-17 11:57:10,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:10,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1774459265, now seen corresponding path program 1 times [2021-11-17 11:57:10,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:10,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115106093] [2021-11-17 11:57:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:10,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:11,210 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:11,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268361320] [2021-11-17 11:57:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:11,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:11,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:11,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:57:11,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-17 11:57:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:57:12,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 4044 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:57:12,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:57:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:57:13,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:57:13,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:57:13,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115106093] [2021-11-17 11:57:13,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:57:13,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268361320] [2021-11-17 11:57:13,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268361320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:57:13,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:57:13,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:57:13,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764109006] [2021-11-17 11:57:13,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:57:13,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:57:13,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:57:13,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:57:13,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:13,834 INFO L87 Difference]: Start difference. First operand 2749 states and 3901 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:57:13,930 INFO L93 Difference]: Finished difference Result 5445 states and 7758 transitions. [2021-11-17 11:57:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:57:13,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 228 [2021-11-17 11:57:13,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:57:13,945 INFO L225 Difference]: With dead ends: 5445 [2021-11-17 11:57:13,945 INFO L226 Difference]: Without dead ends: 2749 [2021-11-17 11:57:13,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:13,958 INFO L933 BasicCegarLoop]: 3899 mSDtfsCounter, 3744 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:57:13,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3744 Valid, 3899 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:57:13,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-17 11:57:14,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2021-11-17 11:57:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1828 states have (on average 1.2691466083150984) internal successors, (2320), 1899 states have internal predecessors, (2320), 790 states have call successors, (790), 130 states have call predecessors, (790), 130 states have return successors, (790), 766 states have call predecessors, (790), 790 states have call successors, (790) [2021-11-17 11:57:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3900 transitions. [2021-11-17 11:57:14,044 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3900 transitions. Word has length 228 [2021-11-17 11:57:14,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:57:14,045 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3900 transitions. [2021-11-17 11:57:14,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3900 transitions. [2021-11-17 11:57:14,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-17 11:57:14,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:14,050 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:14,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-17 11:57:14,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-17 11:57:14,264 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:14,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1643069007, now seen corresponding path program 1 times [2021-11-17 11:57:14,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:14,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805093571] [2021-11-17 11:57:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:14,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:14,541 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:14,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977355272] [2021-11-17 11:57:14,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:14,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:14,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:14,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:57:14,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-17 11:57:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:57:15,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 4045 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:57:15,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:57:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:57:17,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:57:17,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:57:17,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805093571] [2021-11-17 11:57:17,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:57:17,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977355272] [2021-11-17 11:57:17,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977355272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:57:17,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:57:17,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:57:17,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801264105] [2021-11-17 11:57:17,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:57:17,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:57:17,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:57:17,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:57:17,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:17,063 INFO L87 Difference]: Start difference. First operand 2749 states and 3900 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:17,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:57:17,145 INFO L93 Difference]: Finished difference Result 5445 states and 7756 transitions. [2021-11-17 11:57:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:57:17,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 229 [2021-11-17 11:57:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:57:17,160 INFO L225 Difference]: With dead ends: 5445 [2021-11-17 11:57:17,161 INFO L226 Difference]: Without dead ends: 2749 [2021-11-17 11:57:17,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:17,176 INFO L933 BasicCegarLoop]: 3898 mSDtfsCounter, 3742 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3742 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:57:17,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3742 Valid, 3898 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:57:17,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-17 11:57:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2021-11-17 11:57:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1828 states have (on average 1.2685995623632385) internal successors, (2319), 1899 states have internal predecessors, (2319), 790 states have call successors, (790), 130 states have call predecessors, (790), 130 states have return successors, (790), 766 states have call predecessors, (790), 790 states have call successors, (790) [2021-11-17 11:57:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3899 transitions. [2021-11-17 11:57:17,270 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3899 transitions. Word has length 229 [2021-11-17 11:57:17,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:57:17,270 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3899 transitions. [2021-11-17 11:57:17,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:17,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3899 transitions. [2021-11-17 11:57:17,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-17 11:57:17,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:17,278 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:17,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-17 11:57:17,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:17,488 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:17,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:17,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1750421701, now seen corresponding path program 1 times [2021-11-17 11:57:17,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:17,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805086142] [2021-11-17 11:57:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:17,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:17,768 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:17,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879264243] [2021-11-17 11:57:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:17,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:17,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:17,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:57:17,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-17 11:57:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:57:18,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 4046 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:57:18,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:57:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:57:20,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:57:20,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:57:20,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805086142] [2021-11-17 11:57:20,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:57:20,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879264243] [2021-11-17 11:57:20,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879264243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:57:20,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:57:20,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:57:20,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099044389] [2021-11-17 11:57:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:57:20,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:57:20,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:57:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:57:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:20,147 INFO L87 Difference]: Start difference. First operand 2749 states and 3899 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:57:20,240 INFO L93 Difference]: Finished difference Result 5445 states and 7754 transitions. [2021-11-17 11:57:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:57:20,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 230 [2021-11-17 11:57:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:57:20,256 INFO L225 Difference]: With dead ends: 5445 [2021-11-17 11:57:20,257 INFO L226 Difference]: Without dead ends: 2749 [2021-11-17 11:57:20,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:20,271 INFO L933 BasicCegarLoop]: 3897 mSDtfsCounter, 3740 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3740 SdHoareTripleChecker+Valid, 3897 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:57:20,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3740 Valid, 3897 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:57:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-17 11:57:20,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2021-11-17 11:57:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1828 states have (on average 1.2680525164113785) internal successors, (2318), 1899 states have internal predecessors, (2318), 790 states have call successors, (790), 130 states have call predecessors, (790), 130 states have return successors, (790), 766 states have call predecessors, (790), 790 states have call successors, (790) [2021-11-17 11:57:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3898 transitions. [2021-11-17 11:57:20,365 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3898 transitions. Word has length 230 [2021-11-17 11:57:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:57:20,366 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3898 transitions. [2021-11-17 11:57:20,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3898 transitions. [2021-11-17 11:57:20,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-17 11:57:20,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:20,371 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:20,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-17 11:57:20,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:20,591 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash -668871315, now seen corresponding path program 1 times [2021-11-17 11:57:20,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:20,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667721872] [2021-11-17 11:57:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:20,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:21,001 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:21,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321107151] [2021-11-17 11:57:21,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:21,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:21,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:21,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:57:21,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-17 11:57:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:57:22,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 4047 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:57:22,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:57:23,368 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:57:23,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:57:23,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:57:23,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667721872] [2021-11-17 11:57:23,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:57:23,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321107151] [2021-11-17 11:57:23,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321107151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:57:23,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:57:23,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:57:23,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654321156] [2021-11-17 11:57:23,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:57:23,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:57:23,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:57:23,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:57:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:23,370 INFO L87 Difference]: Start difference. First operand 2749 states and 3898 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:23,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:57:23,445 INFO L93 Difference]: Finished difference Result 5445 states and 7752 transitions. [2021-11-17 11:57:23,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:57:23,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 231 [2021-11-17 11:57:23,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:57:23,459 INFO L225 Difference]: With dead ends: 5445 [2021-11-17 11:57:23,459 INFO L226 Difference]: Without dead ends: 2749 [2021-11-17 11:57:23,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:23,472 INFO L933 BasicCegarLoop]: 3896 mSDtfsCounter, 3738 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3738 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:57:23,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3738 Valid, 3896 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:57:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-17 11:57:23,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2021-11-17 11:57:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1828 states have (on average 1.2675054704595186) internal successors, (2317), 1899 states have internal predecessors, (2317), 790 states have call successors, (790), 130 states have call predecessors, (790), 130 states have return successors, (790), 766 states have call predecessors, (790), 790 states have call successors, (790) [2021-11-17 11:57:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3897 transitions. [2021-11-17 11:57:23,555 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3897 transitions. Word has length 231 [2021-11-17 11:57:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:57:23,556 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3897 transitions. [2021-11-17 11:57:23,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:23,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3897 transitions. [2021-11-17 11:57:23,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-17 11:57:23,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:23,561 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:23,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-17 11:57:23,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:23,775 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:23,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1386031113, now seen corresponding path program 1 times [2021-11-17 11:57:23,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:23,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430338923] [2021-11-17 11:57:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:23,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:24,018 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:24,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114841903] [2021-11-17 11:57:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:24,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:24,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:24,020 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:57:24,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-17 11:57:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:57:25,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 4048 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:57:25,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:57:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:57:26,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:57:26,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:57:26,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430338923] [2021-11-17 11:57:26,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:57:26,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114841903] [2021-11-17 11:57:26,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114841903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:57:26,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:57:26,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:57:26,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540409484] [2021-11-17 11:57:26,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:57:26,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:57:26,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:57:26,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:57:26,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:26,502 INFO L87 Difference]: Start difference. First operand 2749 states and 3897 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:26,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:57:26,584 INFO L93 Difference]: Finished difference Result 5445 states and 7750 transitions. [2021-11-17 11:57:26,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:57:26,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 232 [2021-11-17 11:57:26,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:57:26,599 INFO L225 Difference]: With dead ends: 5445 [2021-11-17 11:57:26,600 INFO L226 Difference]: Without dead ends: 2749 [2021-11-17 11:57:26,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:26,615 INFO L933 BasicCegarLoop]: 3895 mSDtfsCounter, 3736 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3736 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:57:26,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3736 Valid, 3895 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:57:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-17 11:57:26,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2021-11-17 11:57:26,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1828 states have (on average 1.2669584245076586) internal successors, (2316), 1899 states have internal predecessors, (2316), 790 states have call successors, (790), 130 states have call predecessors, (790), 130 states have return successors, (790), 766 states have call predecessors, (790), 790 states have call successors, (790) [2021-11-17 11:57:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3896 transitions. [2021-11-17 11:57:26,723 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3896 transitions. Word has length 232 [2021-11-17 11:57:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:57:26,724 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3896 transitions. [2021-11-17 11:57:26,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3896 transitions. [2021-11-17 11:57:26,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-17 11:57:26,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:26,730 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:26,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-17 11:57:26,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:26,944 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:26,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:26,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2028631767, now seen corresponding path program 1 times [2021-11-17 11:57:26,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:26,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659202467] [2021-11-17 11:57:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:26,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:27,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:27,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53782772] [2021-11-17 11:57:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:27,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:27,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:27,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:57:27,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-17 11:57:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:57:28,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:57:28,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:57:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:57:29,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:57:29,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:57:29,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659202467] [2021-11-17 11:57:29,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:57:29,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53782772] [2021-11-17 11:57:29,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53782772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:57:29,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:57:29,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:57:29,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133192027] [2021-11-17 11:57:29,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:57:29,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:57:29,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:57:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:57:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:29,725 INFO L87 Difference]: Start difference. First operand 2749 states and 3896 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:57:29,811 INFO L93 Difference]: Finished difference Result 5445 states and 7748 transitions. [2021-11-17 11:57:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:57:29,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 233 [2021-11-17 11:57:29,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:57:29,828 INFO L225 Difference]: With dead ends: 5445 [2021-11-17 11:57:29,828 INFO L226 Difference]: Without dead ends: 2749 [2021-11-17 11:57:29,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:29,839 INFO L933 BasicCegarLoop]: 3894 mSDtfsCounter, 3734 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3734 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:57:29,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3734 Valid, 3894 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:57:29,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-11-17 11:57:30,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2749. [2021-11-17 11:57:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1828 states have (on average 1.2664113785557987) internal successors, (2315), 1899 states have internal predecessors, (2315), 790 states have call successors, (790), 130 states have call predecessors, (790), 130 states have return successors, (790), 766 states have call predecessors, (790), 790 states have call successors, (790) [2021-11-17 11:57:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3895 transitions. [2021-11-17 11:57:30,021 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3895 transitions. Word has length 233 [2021-11-17 11:57:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:57:30,023 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3895 transitions. [2021-11-17 11:57:30,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:30,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3895 transitions. [2021-11-17 11:57:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-17 11:57:30,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:30,029 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:30,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-17 11:57:30,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:30,243 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash -359898957, now seen corresponding path program 1 times [2021-11-17 11:57:30,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:30,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903439758] [2021-11-17 11:57:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:30,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:30,520 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:30,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822477058] [2021-11-17 11:57:30,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:30,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:30,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:30,522 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:57:30,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-17 11:57:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:57:31,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 4050 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-17 11:57:31,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:57:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:57:33,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:57:33,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:57:33,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903439758] [2021-11-17 11:57:33,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:57:33,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822477058] [2021-11-17 11:57:33,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822477058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:57:33,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:57:33,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 11:57:33,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194474893] [2021-11-17 11:57:33,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:57:33,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 11:57:33,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:57:33,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 11:57:33,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 11:57:33,088 INFO L87 Difference]: Start difference. First operand 2749 states and 3895 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:35,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 11:57:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:57:48,633 INFO L93 Difference]: Finished difference Result 6798 states and 9726 transitions. [2021-11-17 11:57:48,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 11:57:48,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 234 [2021-11-17 11:57:48,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:57:48,655 INFO L225 Difference]: With dead ends: 6798 [2021-11-17 11:57:48,657 INFO L226 Difference]: Without dead ends: 4102 [2021-11-17 11:57:48,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 11:57:48,668 INFO L933 BasicCegarLoop]: 3496 mSDtfsCounter, 4821 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 2778 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5279 SdHoareTripleChecker+Valid, 4801 SdHoareTripleChecker+Invalid, 5773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2778 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:57:48,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5279 Valid, 4801 Invalid, 5773 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2778 Valid, 2994 Invalid, 1 Unknown, 0 Unchecked, 15.0s Time] [2021-11-17 11:57:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-11-17 11:57:48,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 3705. [2021-11-17 11:57:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 2405 states have (on average 1.2669438669438668) internal successors, (3047), 2502 states have internal predecessors, (3047), 1108 states have call successors, (1108), 191 states have call predecessors, (1108), 191 states have return successors, (1108), 1072 states have call predecessors, (1108), 1108 states have call successors, (1108) [2021-11-17 11:57:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 5263 transitions. [2021-11-17 11:57:48,822 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 5263 transitions. Word has length 234 [2021-11-17 11:57:48,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:57:48,822 INFO L470 AbstractCegarLoop]: Abstraction has 3705 states and 5263 transitions. [2021-11-17 11:57:48,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 1 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:48,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 5263 transitions. [2021-11-17 11:57:48,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-17 11:57:48,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:48,829 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:48,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-17 11:57:49,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-17 11:57:49,044 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:49,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash -54272795, now seen corresponding path program 1 times [2021-11-17 11:57:49,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:49,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100015200] [2021-11-17 11:57:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:49,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:49,306 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:49,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427506248] [2021-11-17 11:57:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:49,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:49,307 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:57:49,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-17 11:57:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:57:50,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 4051 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:57:50,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:57:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:57:51,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:57:51,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:57:51,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100015200] [2021-11-17 11:57:51,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:57:51,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427506248] [2021-11-17 11:57:51,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427506248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:57:51,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:57:51,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:57:51,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015182210] [2021-11-17 11:57:51,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:57:51,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:57:51,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:57:51,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:57:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:51,995 INFO L87 Difference]: Start difference. First operand 3705 states and 5263 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:52,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:57:52,108 INFO L93 Difference]: Finished difference Result 7357 states and 10482 transitions. [2021-11-17 11:57:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:57:52,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 235 [2021-11-17 11:57:52,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:57:52,132 INFO L225 Difference]: With dead ends: 7357 [2021-11-17 11:57:52,132 INFO L226 Difference]: Without dead ends: 3705 [2021-11-17 11:57:52,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:52,145 INFO L933 BasicCegarLoop]: 3892 mSDtfsCounter, 3730 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3730 SdHoareTripleChecker+Valid, 3892 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:57:52,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3730 Valid, 3892 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:57:52,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-11-17 11:57:52,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3705. [2021-11-17 11:57:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 2405 states have (on average 1.2665280665280665) internal successors, (3046), 2502 states have internal predecessors, (3046), 1108 states have call successors, (1108), 191 states have call predecessors, (1108), 191 states have return successors, (1108), 1072 states have call predecessors, (1108), 1108 states have call successors, (1108) [2021-11-17 11:57:52,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 5262 transitions. [2021-11-17 11:57:52,274 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 5262 transitions. Word has length 235 [2021-11-17 11:57:52,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:57:52,275 INFO L470 AbstractCegarLoop]: Abstraction has 3705 states and 5262 transitions. [2021-11-17 11:57:52,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:52,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 5262 transitions. [2021-11-17 11:57:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-17 11:57:52,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:52,279 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:52,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-17 11:57:52,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:52,495 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:52,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:52,496 INFO L85 PathProgramCache]: Analyzing trace with hash 944720239, now seen corresponding path program 1 times [2021-11-17 11:57:52,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:52,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853664786] [2021-11-17 11:57:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:52,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:52,720 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:52,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179827138] [2021-11-17 11:57:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:52,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:52,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:52,722 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:57:52,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-17 11:57:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:57:53,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 4052 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:57:53,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:57:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:57:55,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:57:55,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:57:55,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853664786] [2021-11-17 11:57:55,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:57:55,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179827138] [2021-11-17 11:57:55,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179827138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:57:55,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:57:55,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:57:55,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500443201] [2021-11-17 11:57:55,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:57:55,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:57:55,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:57:55,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:57:55,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:55,348 INFO L87 Difference]: Start difference. First operand 3705 states and 5262 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:57:55,462 INFO L93 Difference]: Finished difference Result 7357 states and 10480 transitions. [2021-11-17 11:57:55,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:57:55,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 236 [2021-11-17 11:57:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:57:55,481 INFO L225 Difference]: With dead ends: 7357 [2021-11-17 11:57:55,481 INFO L226 Difference]: Without dead ends: 3705 [2021-11-17 11:57:55,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:55,493 INFO L933 BasicCegarLoop]: 3891 mSDtfsCounter, 3728 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3728 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:57:55,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3728 Valid, 3891 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:57:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-11-17 11:57:55,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3705. [2021-11-17 11:57:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 2405 states have (on average 1.2661122661122661) internal successors, (3045), 2502 states have internal predecessors, (3045), 1108 states have call successors, (1108), 191 states have call predecessors, (1108), 191 states have return successors, (1108), 1072 states have call predecessors, (1108), 1108 states have call successors, (1108) [2021-11-17 11:57:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 5261 transitions. [2021-11-17 11:57:55,625 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 5261 transitions. Word has length 236 [2021-11-17 11:57:55,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:57:55,625 INFO L470 AbstractCegarLoop]: Abstraction has 3705 states and 5261 transitions. [2021-11-17 11:57:55,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 5261 transitions. [2021-11-17 11:57:55,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-17 11:57:55,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:55,630 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:55,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-17 11:57:55,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-17 11:57:55,835 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:55,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:55,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1963249825, now seen corresponding path program 1 times [2021-11-17 11:57:55,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:55,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658505550] [2021-11-17 11:57:55,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:55,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:56,055 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:56,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288288205] [2021-11-17 11:57:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:56,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:56,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:56,056 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:57:56,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-17 11:57:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:57:57,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 4053 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:57:57,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:57:58,581 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:57:58,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:57:58,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:57:58,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658505550] [2021-11-17 11:57:58,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:57:58,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288288205] [2021-11-17 11:57:58,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288288205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:57:58,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:57:58,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:57:58,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169149207] [2021-11-17 11:57:58,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:57:58,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:57:58,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:57:58,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:57:58,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:58,583 INFO L87 Difference]: Start difference. First operand 3705 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:57:58,771 INFO L93 Difference]: Finished difference Result 7357 states and 10478 transitions. [2021-11-17 11:57:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:57:58,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 237 [2021-11-17 11:57:58,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:57:58,786 INFO L225 Difference]: With dead ends: 7357 [2021-11-17 11:57:58,786 INFO L226 Difference]: Without dead ends: 3705 [2021-11-17 11:57:58,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:57:58,796 INFO L933 BasicCegarLoop]: 3890 mSDtfsCounter, 3726 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3726 SdHoareTripleChecker+Valid, 3890 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:57:58,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3726 Valid, 3890 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:57:58,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-11-17 11:57:58,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3705. [2021-11-17 11:57:58,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 2405 states have (on average 1.2656964656964658) internal successors, (3044), 2502 states have internal predecessors, (3044), 1108 states have call successors, (1108), 191 states have call predecessors, (1108), 191 states have return successors, (1108), 1072 states have call predecessors, (1108), 1108 states have call successors, (1108) [2021-11-17 11:57:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 5260 transitions. [2021-11-17 11:57:58,923 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 5260 transitions. Word has length 237 [2021-11-17 11:57:58,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:57:58,924 INFO L470 AbstractCegarLoop]: Abstraction has 3705 states and 5260 transitions. [2021-11-17 11:57:58,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:57:58,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 5260 transitions. [2021-11-17 11:57:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-17 11:57:58,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:57:58,928 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:57:58,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-17 11:57:59,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-17 11:57:59,136 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:57:59,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:57:59,136 INFO L85 PathProgramCache]: Analyzing trace with hash -707554773, now seen corresponding path program 1 times [2021-11-17 11:57:59,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:57:59,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865499010] [2021-11-17 11:57:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:59,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:57:59,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:57:59,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505269825] [2021-11-17 11:57:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:57:59,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:57:59,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:57:59,358 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:57:59,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-17 11:58:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:58:00,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 4054 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:58:00,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:58:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:58:02,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:58:02,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:58:02,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865499010] [2021-11-17 11:58:02,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:58:02,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505269825] [2021-11-17 11:58:02,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505269825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:58:02,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:58:02,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:58:02,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231081498] [2021-11-17 11:58:02,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:58:02,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:58:02,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:58:02,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:58:02,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:58:02,030 INFO L87 Difference]: Start difference. First operand 3705 states and 5260 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:58:02,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:58:02,147 INFO L93 Difference]: Finished difference Result 7357 states and 10476 transitions. [2021-11-17 11:58:02,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:58:02,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 238 [2021-11-17 11:58:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:58:02,161 INFO L225 Difference]: With dead ends: 7357 [2021-11-17 11:58:02,162 INFO L226 Difference]: Without dead ends: 3705 [2021-11-17 11:58:02,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:58:02,173 INFO L933 BasicCegarLoop]: 3889 mSDtfsCounter, 3724 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3724 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:58:02,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3724 Valid, 3889 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:58:02,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-11-17 11:58:02,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3705. [2021-11-17 11:58:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 2405 states have (on average 1.2652806652806652) internal successors, (3043), 2502 states have internal predecessors, (3043), 1108 states have call successors, (1108), 191 states have call predecessors, (1108), 191 states have return successors, (1108), 1072 states have call predecessors, (1108), 1108 states have call successors, (1108) [2021-11-17 11:58:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 5259 transitions. [2021-11-17 11:58:02,309 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 5259 transitions. Word has length 238 [2021-11-17 11:58:02,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:58:02,309 INFO L470 AbstractCegarLoop]: Abstraction has 3705 states and 5259 transitions. [2021-11-17 11:58:02,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:58:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 5259 transitions. [2021-11-17 11:58:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-17 11:58:02,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:58:02,314 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:58:02,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-17 11:58:02,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-17 11:58:02,528 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:58:02,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:58:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1783602083, now seen corresponding path program 1 times [2021-11-17 11:58:02,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:58:02,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124585815] [2021-11-17 11:58:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:58:02,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:58:02,736 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:58:02,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038829949] [2021-11-17 11:58:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:58:02,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:58:02,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:58:02,738 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:58:02,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-17 11:58:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:58:03,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 4055 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:58:03,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:58:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:58:05,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:58:05,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:58:05,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124585815] [2021-11-17 11:58:05,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:58:05,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038829949] [2021-11-17 11:58:05,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038829949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:58:05,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:58:05,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:58:05,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044775408] [2021-11-17 11:58:05,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:58:05,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:58:05,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:58:05,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:58:05,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:58:05,258 INFO L87 Difference]: Start difference. First operand 3705 states and 5259 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:58:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:58:05,460 INFO L93 Difference]: Finished difference Result 7357 states and 10474 transitions. [2021-11-17 11:58:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:58:05,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 239 [2021-11-17 11:58:05,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:58:05,472 INFO L225 Difference]: With dead ends: 7357 [2021-11-17 11:58:05,472 INFO L226 Difference]: Without dead ends: 3705 [2021-11-17 11:58:05,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:58:05,482 INFO L933 BasicCegarLoop]: 3888 mSDtfsCounter, 3722 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3722 SdHoareTripleChecker+Valid, 3888 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:58:05,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3722 Valid, 3888 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:58:05,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-11-17 11:58:05,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3705. [2021-11-17 11:58:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 2405 states have (on average 1.2648648648648648) internal successors, (3042), 2502 states have internal predecessors, (3042), 1108 states have call successors, (1108), 191 states have call predecessors, (1108), 191 states have return successors, (1108), 1072 states have call predecessors, (1108), 1108 states have call successors, (1108) [2021-11-17 11:58:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 5258 transitions. [2021-11-17 11:58:05,615 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 5258 transitions. Word has length 239 [2021-11-17 11:58:05,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:58:05,616 INFO L470 AbstractCegarLoop]: Abstraction has 3705 states and 5258 transitions. [2021-11-17 11:58:05,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:58:05,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 5258 transitions. [2021-11-17 11:58:05,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-17 11:58:05,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:58:05,620 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:58:05,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-17 11:58:05,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-17 11:58:05,847 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:58:05,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:58:05,848 INFO L85 PathProgramCache]: Analyzing trace with hash -666813721, now seen corresponding path program 1 times [2021-11-17 11:58:05,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:58:05,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336004060] [2021-11-17 11:58:05,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:58:05,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:58:06,085 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:58:06,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943468813] [2021-11-17 11:58:06,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:58:06,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:58:06,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:58:06,087 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:58:06,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-17 11:58:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:58:07,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 4056 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:58:07,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:58:08,739 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:58:08,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:58:08,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:58:08,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336004060] [2021-11-17 11:58:08,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:58:08,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943468813] [2021-11-17 11:58:08,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943468813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:58:08,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:58:08,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:58:08,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497901752] [2021-11-17 11:58:08,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:58:08,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:58:08,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:58:08,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:58:08,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:58:08,741 INFO L87 Difference]: Start difference. First operand 3705 states and 5258 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:58:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:58:08,873 INFO L93 Difference]: Finished difference Result 7357 states and 10472 transitions. [2021-11-17 11:58:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:58:08,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 240 [2021-11-17 11:58:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:58:08,891 INFO L225 Difference]: With dead ends: 7357 [2021-11-17 11:58:08,891 INFO L226 Difference]: Without dead ends: 3705 [2021-11-17 11:58:08,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:58:08,906 INFO L933 BasicCegarLoop]: 3887 mSDtfsCounter, 3720 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3720 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:58:08,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3720 Valid, 3887 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:58:08,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-11-17 11:58:09,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3705. [2021-11-17 11:58:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 2405 states have (on average 1.2644490644490645) internal successors, (3041), 2502 states have internal predecessors, (3041), 1108 states have call successors, (1108), 191 states have call predecessors, (1108), 191 states have return successors, (1108), 1072 states have call predecessors, (1108), 1108 states have call successors, (1108) [2021-11-17 11:58:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 5257 transitions. [2021-11-17 11:58:09,060 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 5257 transitions. Word has length 240 [2021-11-17 11:58:09,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:58:09,062 INFO L470 AbstractCegarLoop]: Abstraction has 3705 states and 5257 transitions. [2021-11-17 11:58:09,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:58:09,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 5257 transitions. [2021-11-17 11:58:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-17 11:58:09,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:58:09,067 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:58:09,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-17 11:58:09,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:58:09,284 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:58:09,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:58:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash -291596263, now seen corresponding path program 1 times [2021-11-17 11:58:09,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:58:09,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875047494] [2021-11-17 11:58:09,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:58:09,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:58:09,538 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:58:09,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246498755] [2021-11-17 11:58:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:58:09,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:58:09,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:58:09,540 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:58:09,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-17 11:58:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:58:10,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 4057 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 11:58:10,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:58:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:58:12,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:58:12,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:58:12,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875047494] [2021-11-17 11:58:12,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:58:12,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246498755] [2021-11-17 11:58:12,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246498755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:58:12,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:58:12,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 11:58:12,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697433857] [2021-11-17 11:58:12,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:58:12,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 11:58:12,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:58:12,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 11:58:12,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:58:12,239 INFO L87 Difference]: Start difference. First operand 3705 states and 5257 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:58:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:58:12,454 INFO L93 Difference]: Finished difference Result 7357 states and 10470 transitions. [2021-11-17 11:58:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 11:58:12,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 241 [2021-11-17 11:58:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:58:12,470 INFO L225 Difference]: With dead ends: 7357 [2021-11-17 11:58:12,470 INFO L226 Difference]: Without dead ends: 3705 [2021-11-17 11:58:12,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 11:58:12,483 INFO L933 BasicCegarLoop]: 3886 mSDtfsCounter, 3718 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3718 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:58:12,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3718 Valid, 3886 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:58:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-11-17 11:58:12,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3705. [2021-11-17 11:58:12,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3705 states, 2405 states have (on average 1.264033264033264) internal successors, (3040), 2502 states have internal predecessors, (3040), 1108 states have call successors, (1108), 191 states have call predecessors, (1108), 191 states have return successors, (1108), 1072 states have call predecessors, (1108), 1108 states have call successors, (1108) [2021-11-17 11:58:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3705 states to 3705 states and 5256 transitions. [2021-11-17 11:58:12,641 INFO L78 Accepts]: Start accepts. Automaton has 3705 states and 5256 transitions. Word has length 241 [2021-11-17 11:58:12,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:58:12,641 INFO L470 AbstractCegarLoop]: Abstraction has 3705 states and 5256 transitions. [2021-11-17 11:58:12,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 2 states have internal predecessors, (118), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:58:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3705 states and 5256 transitions. [2021-11-17 11:58:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-17 11:58:12,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:58:12,646 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:58:12,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-17 11:58:12,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-17 11:58:12,860 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:58:12,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:58:12,860 INFO L85 PathProgramCache]: Analyzing trace with hash -262967112, now seen corresponding path program 1 times [2021-11-17 11:58:12,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:58:12,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582230327] [2021-11-17 11:58:12,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:58:12,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:58:13,124 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:58:13,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740610354] [2021-11-17 11:58:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:58:13,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:58:13,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:58:13,126 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:58:13,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-17 11:58:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:58:14,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 4056 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-17 11:58:14,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:58:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:58:14,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:58:14,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:58:14,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582230327] [2021-11-17 11:58:14,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:58:14,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740610354] [2021-11-17 11:58:14,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740610354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:58:14,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:58:14,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 11:58:14,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638352025] [2021-11-17 11:58:14,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:58:14,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 11:58:14,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:58:14,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 11:58:14,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 11:58:14,551 INFO L87 Difference]: Start difference. First operand 3705 states and 5256 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 11:58:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:58:14,797 INFO L93 Difference]: Finished difference Result 7362 states and 10468 transitions. [2021-11-17 11:58:14,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-17 11:58:14,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 241 [2021-11-17 11:58:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:58:14,815 INFO L225 Difference]: With dead ends: 7362 [2021-11-17 11:58:14,815 INFO L226 Difference]: Without dead ends: 3710 [2021-11-17 11:58:14,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 11:58:14,828 INFO L933 BasicCegarLoop]: 3884 mSDtfsCounter, 7 mSDsluCounter, 7759 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 11643 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 11:58:14,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 11643 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 11:58:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2021-11-17 11:58:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 3707. [2021-11-17 11:58:14,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3707 states, 2407 states have (on average 1.2638138761944329) internal successors, (3042), 2504 states have internal predecessors, (3042), 1108 states have call successors, (1108), 191 states have call predecessors, (1108), 191 states have return successors, (1108), 1072 states have call predecessors, (1108), 1108 states have call successors, (1108) [2021-11-17 11:58:14,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3707 states to 3707 states and 5258 transitions. [2021-11-17 11:58:14,986 INFO L78 Accepts]: Start accepts. Automaton has 3707 states and 5258 transitions. Word has length 241 [2021-11-17 11:58:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:58:14,986 INFO L470 AbstractCegarLoop]: Abstraction has 3707 states and 5258 transitions. [2021-11-17 11:58:14,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 11:58:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3707 states and 5258 transitions. [2021-11-17 11:58:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-17 11:58:14,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 11:58:14,991 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 11:58:15,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-17 11:58:15,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-17 11:58:15,207 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 11:58:15,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 11:58:15,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1139719071, now seen corresponding path program 1 times [2021-11-17 11:58:15,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 11:58:15,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039204460] [2021-11-17 11:58:15,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:58:15,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 11:58:15,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 11:58:15,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546280111] [2021-11-17 11:58:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 11:58:15,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 11:58:15,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 11:58:15,442 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 11:58:15,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-17 11:58:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 11:58:16,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 4070 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-17 11:58:16,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 11:58:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-11-17 11:58:16,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 11:58:16,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 11:58:16,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039204460] [2021-11-17 11:58:16,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 11:58:16,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546280111] [2021-11-17 11:58:16,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546280111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 11:58:16,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 11:58:16,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 11:58:16,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355178715] [2021-11-17 11:58:16,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 11:58:16,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 11:58:16,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 11:58:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 11:58:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 11:58:16,947 INFO L87 Difference]: Start difference. First operand 3707 states and 5258 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:58:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 11:58:17,085 INFO L93 Difference]: Finished difference Result 3709 states and 5262 transitions. [2021-11-17 11:58:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 11:58:17,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 243 [2021-11-17 11:58:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 11:58:17,086 INFO L225 Difference]: With dead ends: 3709 [2021-11-17 11:58:17,087 INFO L226 Difference]: Without dead ends: 0 [2021-11-17 11:58:17,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 11:58:17,095 INFO L933 BasicCegarLoop]: 3887 mSDtfsCounter, 3 mSDsluCounter, 11656 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15543 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 11:58:17,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 15543 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 11:58:17,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-17 11:58:17,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-17 11:58:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-17 11:58:17,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-17 11:58:17,097 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 243 [2021-11-17 11:58:17,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 11:58:17,098 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-17 11:58:17,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2021-11-17 11:58:17,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-17 11:58:17,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-17 11:58:17,100 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-17 11:58:17,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-17 11:58:17,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-17 11:58:17,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Killed by 15