./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.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-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.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 cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 06:31:17,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 06:31:17,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 06:31:17,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 06:31:17,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 06:31:17,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 06:31:17,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 06:31:17,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 06:31:17,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 06:31:17,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 06:31:17,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 06:31:17,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 06:31:17,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 06:31:17,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 06:31:17,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 06:31:17,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 06:31:17,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 06:31:17,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 06:31:17,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 06:31:17,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 06:31:17,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 06:31:17,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 06:31:17,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 06:31:17,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 06:31:17,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 06:31:17,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 06:31:17,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 06:31:17,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 06:31:17,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 06:31:17,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 06:31:17,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 06:31:17,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 06:31:17,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 06:31:17,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 06:31:17,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 06:31:17,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 06:31:17,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 06:31:17,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 06:31:17,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 06:31:17,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 06:31:17,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 06:31:17,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 06:31:17,126 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 06:31:17,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 06:31:17,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 06:31:17,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 06:31:17,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 06:31:17,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 06:31:17,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 06:31:17,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 06:31:17,129 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 06:31:17,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 06:31:17,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 06:31:17,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 06:31:17,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 06:31:17,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 06:31:17,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 06:31:17,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 06:31:17,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 06:31:17,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 06:31:17,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 06:31:17,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 06:31:17,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 06:31:17,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 06:31:17,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 06:31:17,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 06:31:17,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 06:31:17,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 06:31:17,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 06:31:17,132 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 06:31:17,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 06:31:17,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 06:31:17,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 06:31:17,132 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 [2021-11-17 06:31:17,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 06:31:17,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 06:31:17,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 06:31:17,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 06:31:17,363 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 06:31:17,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-17 06:31:17,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3934000f1/3d28e35efa1e403a93a53f021acae414/FLAGa6741121f [2021-11-17 06:31:18,071 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 06:31:18,072 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-17 06:31:18,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3934000f1/3d28e35efa1e403a93a53f021acae414/FLAGa6741121f [2021-11-17 06:31:18,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3934000f1/3d28e35efa1e403a93a53f021acae414 [2021-11-17 06:31:18,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 06:31:18,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 06:31:18,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 06:31:18,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 06:31:18,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 06:31:18,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 06:31:18" (1/1) ... [2021-11-17 06:31:18,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47262728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:18, skipping insertion in model container [2021-11-17 06:31:18,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 06:31:18" (1/1) ... [2021-11-17 06:31:18,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 06:31:18,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 06:31:22,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-11-17 06:31:22,233 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-11-17 06:31:22,258 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 06:31:22,283 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 06:31:22,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-11-17 06:31:22,588 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-11-17 06:31:22,591 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 06:31:22,741 INFO L208 MainTranslator]: Completed translation [2021-11-17 06:31:22,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22 WrapperNode [2021-11-17 06:31:22,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 06:31:22,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 06:31:22,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 06:31:22,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 06:31:22,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22" (1/1) ... [2021-11-17 06:31:22,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22" (1/1) ... [2021-11-17 06:31:22,983 INFO L137 Inliner]: procedures = 623, calls = 3565, calls flagged for inlining = 310, calls inlined = 274, statements flattened = 8077 [2021-11-17 06:31:22,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 06:31:22,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 06:31:22,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 06:31:22,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 06:31:22,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22" (1/1) ... [2021-11-17 06:31:22,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22" (1/1) ... [2021-11-17 06:31:23,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22" (1/1) ... [2021-11-17 06:31:23,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22" (1/1) ... [2021-11-17 06:31:23,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22" (1/1) ... [2021-11-17 06:31:23,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22" (1/1) ... [2021-11-17 06:31:23,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22" (1/1) ... [2021-11-17 06:31:23,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 06:31:23,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 06:31:23,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 06:31:23,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 06:31:23,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22" (1/1) ... [2021-11-17 06:31:23,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 06:31:23,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:31:23,321 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 06:31:23,335 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 06:31:23,359 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-17 06:31:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-17 06:31:23,359 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-17 06:31:23,359 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-17 06:31:23,359 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_phy_reg [2021-11-17 06:31:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_phy_reg [2021-11-17 06:31:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 06:31:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 06:31:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_force_ps [2021-11-17 06:31:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_force_ps [2021-11-17 06:31:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-17 06:31:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-17 06:31:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-17 06:31:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-17 06:31:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 06:31:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 06:31:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_del_timer [2021-11-17 06:31:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_del_timer [2021-11-17 06:31:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-17 06:31:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-17 06:31:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-17 06:31:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-17 06:31:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-17 06:31:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-17 06:31:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-17 06:31:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-17 06:31:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-17 06:31:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-17 06:31:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_disable [2021-11-17 06:31:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_disable [2021-11-17 06:31:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_io_resume [2021-11-17 06:31:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_io_resume [2021-11-17 06:31:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_restart_autoneg [2021-11-17 06:31:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_restart_autoneg [2021-11-17 06:31:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_close [2021-11-17 06:31:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_close [2021-11-17 06:31:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-17 06:31:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-17 06:31:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-17 06:31:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-17 06:31:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tpd [2021-11-17 06:31:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tpd [2021-11-17 06:31:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-17 06:31:23,364 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-17 06:31:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-17 06:31:23,365 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-17 06:31:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-17 06:31:23,365 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-17 06:31:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-17 06:31:23,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-17 06:31:23,365 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-17 06:31:23,366 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-17 06:31:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_irq [2021-11-17 06:31:23,366 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_irq [2021-11-17 06:31:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-17 06:31:23,366 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-17 06:31:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-17 06:31:23,366 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-17 06:31:23,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 06:31:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_106 [2021-11-17 06:31:23,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_106 [2021-11-17 06:31:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-17 06:31:23,367 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-17 06:31:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_shutdown [2021-11-17 06:31:23,367 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_shutdown [2021-11-17 06:31:23,367 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-17 06:31:23,368 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-17 06:31:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_check_eeprom_exist [2021-11-17 06:31:23,368 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_check_eeprom_exist [2021-11-17 06:31:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-17 06:31:23,368 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-17 06:31:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-17 06:31:23,368 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-17 06:31:23,368 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-17 06:31:23,369 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-17 06:31:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 06:31:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_hw_set_mac_addr [2021-11-17 06:31:23,369 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_hw_set_mac_addr [2021-11-17 06:31:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-17 06:31:23,369 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-17 06:31:23,369 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-17 06:31:23,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-17 06:31:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_tx_buffer [2021-11-17 06:31:23,370 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_tx_buffer [2021-11-17 06:31:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 06:31:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-17 06:31:23,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-17 06:31:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 06:31:23,370 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-17 06:31:23,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-17 06:31:23,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-17 06:31:23,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-17 06:31:23,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-17 06:31:23,371 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-17 06:31:23,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-17 06:31:23,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-17 06:31:23,371 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-17 06:31:23,371 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-17 06:31:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-17 06:31:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-17 06:31:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-17 06:31:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-17 06:31:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-17 06:31:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-17 06:31:23,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-17 06:31:23,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-17 06:31:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_reset [2021-11-17 06:31:23,373 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_reset [2021-11-17 06:31:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-17 06:31:23,373 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-17 06:31:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-17 06:31:23,373 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-17 06:31:23,373 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_down [2021-11-17 06:31:23,373 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_down [2021-11-17 06:31:23,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 06:31:23,374 INFO L130 BoogieDeclarations]: Found specification of procedure __atl1e_vlan_mode [2021-11-17 06:31:23,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __atl1e_vlan_mode [2021-11-17 06:31:23,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-17 06:31:23,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-17 06:31:23,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-17 06:31:23,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-17 06:31:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 06:31:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-17 06:31:23,375 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-17 06:31:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-17 06:31:23,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-17 06:31:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-17 06:31:23,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-17 06:31:23,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 06:31:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-17 06:31:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-17 06:31:23,376 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-17 06:31:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-17 06:31:23,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-17 06:31:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-17 06:31:23,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-17 06:31:23,376 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-17 06:31:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-17 06:31:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_set_multi [2021-11-17 06:31:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_set_multi [2021-11-17 06:31:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_remove [2021-11-17 06:31:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_remove [2021-11-17 06:31:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-17 06:31:23,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-17 06:31:23,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-11-17 06:31:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_atl1e_driver_exit_14_2 [2021-11-17 06:31:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-17 06:31:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-17 06:31:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-17 06:31:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-17 06:31:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-17 06:31:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-17 06:31:23,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-17 06:31:23,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-17 06:31:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_free_ring_resources [2021-11-17 06:31:23,379 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_free_ring_resources [2021-11-17 06:31:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-17 06:31:23,379 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-17 06:31:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-17 06:31:23,379 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-17 06:31:23,379 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-17 06:31:23,379 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-17 06:31:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_validate_option [2021-11-17 06:31:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_validate_option [2021-11-17 06:31:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-17 06:31:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-17 06:31:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-17 06:31:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-17 06:31:23,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 06:31:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 06:31:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-17 06:31:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-17 06:31:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-17 06:31:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-17 06:31:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 06:31:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 06:31:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 06:31:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 06:31:23,381 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 06:31:23,382 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 06:31:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-17 06:31:23,382 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-17 06:31:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-17 06:31:23,382 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-17 06:31:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-17 06:31:23,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-17 06:31:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_tx_ring [2021-11-17 06:31:23,383 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_tx_ring [2021-11-17 06:31:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-11-17 06:31:23,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mdio_lock_of_atl1e_adapter [2021-11-17 06:31:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-17 06:31:23,383 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-17 06:31:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-17 06:31:23,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-17 06:31:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-17 06:31:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-17 06:31:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-11-17 06:31:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mdio_lock_of_atl1e_adapter [2021-11-17 06:31:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-17 06:31:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-17 06:31:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-17 06:31:23,384 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-17 06:31:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_resume [2021-11-17 06:31:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_resume [2021-11-17 06:31:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-17 06:31:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-17 06:31:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-17 06:31:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-17 06:31:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 06:31:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-17 06:31:23,385 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-17 06:31:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-17 06:31:23,386 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-17 06:31:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-17 06:31:23,386 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-17 06:31:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_tx_timeout [2021-11-17 06:31:23,386 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_tx_timeout [2021-11-17 06:31:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_114 [2021-11-17 06:31:23,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_114 [2021-11-17 06:31:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 06:31:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_vlan_mode [2021-11-17 06:31:23,387 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_vlan_mode [2021-11-17 06:31:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_write_phy_reg [2021-11-17 06:31:23,387 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_write_phy_reg [2021-11-17 06:31:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-17 06:31:23,387 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-17 06:31:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_102 [2021-11-17 06:31:23,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_102 [2021-11-17 06:31:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_up [2021-11-17 06:31:23,388 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_up [2021-11-17 06:31:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 06:31:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_commit [2021-11-17 06:31:23,388 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_commit [2021-11-17 06:31:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-17 06:31:23,388 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-17 06:31:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-17 06:31:23,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-17 06:31:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-17 06:31:23,389 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-17 06:31:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-17 06:31:23,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-17 06:31:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-17 06:31:23,389 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-17 06:31:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-17 06:31:23,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-17 06:31:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reinit_locked [2021-11-17 06:31:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reinit_locked [2021-11-17 06:31:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_phy_init [2021-11-17 06:31:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_phy_init [2021-11-17 06:31:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_intr [2021-11-17 06:31:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_intr [2021-11-17 06:31:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-17 06:31:23,390 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-17 06:31:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-17 06:31:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-17 06:31:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_open [2021-11-17 06:31:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_open [2021-11-17 06:31:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-17 06:31:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-17 06:31:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-17 06:31:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-17 06:31:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_irq_enable [2021-11-17 06:31:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_irq_enable [2021-11-17 06:31:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 06:31:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 06:31:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 06:31:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_netpoll [2021-11-17 06:31:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_netpoll [2021-11-17 06:31:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 06:31:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 06:31:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_read_eeprom [2021-11-17 06:31:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_read_eeprom [2021-11-17 06:31:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_suspend [2021-11-17 06:31:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_suspend [2021-11-17 06:31:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-17 06:31:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-17 06:31:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-17 06:31:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-17 06:31:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_nway_reset [2021-11-17 06:31:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_nway_reset [2021-11-17 06:31:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_105 [2021-11-17 06:31:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_105 [2021-11-17 06:31:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-17 06:31:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-17 06:31:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_request_irq [2021-11-17 06:31:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_request_irq [2021-11-17 06:31:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-17 06:31:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-17 06:31:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-17 06:31:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-17 06:31:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-17 06:31:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-17 06:31:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-17 06:31:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-17 06:31:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_eeprom_len [2021-11-17 06:31:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_eeprom_len [2021-11-17 06:31:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-17 06:31:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-17 06:31:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-17 06:31:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-17 06:31:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_reset_hw [2021-11-17 06:31:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_reset_hw [2021-11-17 06:31:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-17 06:31:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-17 06:31:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-17 06:31:23,396 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-17 06:31:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 06:31:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-17 06:31:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-17 06:31:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-17 06:31:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-17 06:31:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_get_regs_len [2021-11-17 06:31:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_get_regs_len [2021-11-17 06:31:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure atl1e_clean_rx_ring [2021-11-17 06:31:23,397 INFO L138 BoogieDeclarations]: Found implementation of procedure atl1e_clean_rx_ring [2021-11-17 06:31:24,222 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 06:31:24,226 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 06:31:24,409 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 06:31:33,159 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-17 06:31:33,290 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 06:31:33,321 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 06:31:33,321 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-17 06:31:33,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 06:31:33 BoogieIcfgContainer [2021-11-17 06:31:33,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 06:31:33,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 06:31:33,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 06:31:33,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 06:31:33,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 06:31:18" (1/3) ... [2021-11-17 06:31:33,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7678eaf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 06:31:33, skipping insertion in model container [2021-11-17 06:31:33,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 06:31:22" (2/3) ... [2021-11-17 06:31:33,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7678eaf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 06:31:33, skipping insertion in model container [2021-11-17 06:31:33,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 06:31:33" (3/3) ... [2021-11-17 06:31:33,333 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-17 06:31:33,337 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 06:31:33,337 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-17 06:31:33,376 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 06:31:33,380 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 06:31:33,380 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-17 06:31:33,425 INFO L276 IsEmpty]: Start isEmpty. Operand has 2837 states, 1921 states have (on average 1.2613222280062468) internal successors, (2423), 1946 states have internal predecessors, (2423), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) [2021-11-17 06:31:33,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-17 06:31:33,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:31:33,444 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:31:33,444 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:31:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:31:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash -24091557, now seen corresponding path program 1 times [2021-11-17 06:31:33,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:31:33,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370203708] [2021-11-17 06:31:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:31:33,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:31:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:33,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 06:31:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 06:31:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 06:31:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 06:31:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 06:31:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 06:31:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 06:31:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 06:31:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 06:31:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 06:31:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 06:31:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 06:31:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-17 06:31:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-17 06:31:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 06:31:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-17 06:31:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:31:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 06:31:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-11-17 06:31:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-11-17 06:31:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-17 06:31:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-17 06:31:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2021-11-17 06:31:34,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:31:34,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370203708] [2021-11-17 06:31:34,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370203708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:31:34,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:31:34,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 06:31:34,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354388729] [2021-11-17 06:31:34,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:31:34,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 06:31:34,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:31:34,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 06:31:34,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 06:31:34,441 INFO L87 Difference]: Start difference. First operand has 2837 states, 1921 states have (on average 1.2613222280062468) internal successors, (2423), 1946 states have internal predecessors, (2423), 767 states have call successors, (767), 149 states have call predecessors, (767), 148 states have return successors, (761), 759 states have call predecessors, (761), 761 states have call successors, (761) Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-17 06:31:36,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:31:38,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:31:43,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:31:43,392 INFO L93 Difference]: Finished difference Result 7783 states and 10945 transitions. [2021-11-17 06:31:43,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 06:31:43,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 231 [2021-11-17 06:31:43,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:31:43,425 INFO L225 Difference]: With dead ends: 7783 [2021-11-17 06:31:43,425 INFO L226 Difference]: Without dead ends: 4893 [2021-11-17 06:31:43,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 06:31:43,438 INFO L933 BasicCegarLoop]: 4108 mSDtfsCounter, 3707 mSDsluCounter, 4515 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 1870 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 8623 SdHoareTripleChecker+Invalid, 4262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1870 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-17 06:31:43,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4243 Valid, 8623 Invalid, 4262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1870 Valid, 2390 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2021-11-17 06:31:43,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2021-11-17 06:31:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4656. [2021-11-17 06:31:43,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4656 states, 3168 states have (on average 1.2512626262626263) internal successors, (3964), 3211 states have internal predecessors, (3964), 1222 states have call successors, (1222), 266 states have call predecessors, (1222), 265 states have return successors, (1222), 1215 states have call predecessors, (1222), 1222 states have call successors, (1222) [2021-11-17 06:31:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4656 states to 4656 states and 6408 transitions. [2021-11-17 06:31:43,685 INFO L78 Accepts]: Start accepts. Automaton has 4656 states and 6408 transitions. Word has length 231 [2021-11-17 06:31:43,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:31:43,685 INFO L470 AbstractCegarLoop]: Abstraction has 4656 states and 6408 transitions. [2021-11-17 06:31:43,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-17 06:31:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4656 states and 6408 transitions. [2021-11-17 06:31:43,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-17 06:31:43,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:31:43,692 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:31:43,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 06:31:43,693 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:31:43,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:31:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash 757183165, now seen corresponding path program 1 times [2021-11-17 06:31:43,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:31:43,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676506929] [2021-11-17 06:31:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:31:43,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:31:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 06:31:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 06:31:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 06:31:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 06:31:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 06:31:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 06:31:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 06:31:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 06:31:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 06:31:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 06:31:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 06:31:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 06:31:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-17 06:31:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-17 06:31:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 06:31:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-17 06:31:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 06:31:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-17 06:31:43,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:31:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-17 06:31:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:43,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-17 06:31:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:31:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2021-11-17 06:31:44,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:31:44,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676506929] [2021-11-17 06:31:44,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676506929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:31:44,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:31:44,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 06:31:44,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297407127] [2021-11-17 06:31:44,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:31:44,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 06:31:44,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:31:44,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 06:31:44,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 06:31:44,014 INFO L87 Difference]: Start difference. First operand 4656 states and 6408 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-17 06:31:46,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:31:48,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:31:53,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:31:56,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:31:58,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:32:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:03,206 INFO L93 Difference]: Finished difference Result 12961 states and 18069 transitions. [2021-11-17 06:32:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 06:32:03,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 239 [2021-11-17 06:32:03,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:03,253 INFO L225 Difference]: With dead ends: 12961 [2021-11-17 06:32:03,254 INFO L226 Difference]: Without dead ends: 8338 [2021-11-17 06:32:03,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 06:32:03,277 INFO L933 BasicCegarLoop]: 5266 mSDtfsCounter, 4923 mSDsluCounter, 6808 mSDsCounter, 0 mSdLazyCounter, 4738 mSolverCounterSat, 3219 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5353 SdHoareTripleChecker+Valid, 12074 SdHoareTripleChecker+Invalid, 7960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3219 IncrementalHoareTripleChecker+Valid, 4738 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2021-11-17 06:32:03,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5353 Valid, 12074 Invalid, 7960 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3219 Valid, 4738 Invalid, 3 Unknown, 0 Unchecked, 18.7s Time] [2021-11-17 06:32:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8338 states. [2021-11-17 06:32:03,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8338 to 7061. [2021-11-17 06:32:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2498965659908978) internal successors, (6042), 4895 states have internal predecessors, (6042), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-11-17 06:32:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9658 transitions. [2021-11-17 06:32:03,626 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9658 transitions. Word has length 239 [2021-11-17 06:32:03,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:03,629 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9658 transitions. [2021-11-17 06:32:03,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-17 06:32:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9658 transitions. [2021-11-17 06:32:03,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2021-11-17 06:32:03,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:03,640 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:03,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 06:32:03,641 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:03,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:03,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2051024223, now seen corresponding path program 1 times [2021-11-17 06:32:03,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:03,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744676218] [2021-11-17 06:32:03,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:03,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:03,732 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:03,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332551594] [2021-11-17 06:32:03,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:03,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:03,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:03,763 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 06:32:03,783 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 06:32:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:04,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 3946 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:04,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:05,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:05,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:05,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744676218] [2021-11-17 06:32:05,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:05,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332551594] [2021-11-17 06:32:05,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332551594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:05,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:05,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:05,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430954399] [2021-11-17 06:32:05,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:05,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:05,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:05,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:05,500 INFO L87 Difference]: Start difference. First operand 7061 states and 9658 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:05,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:05,632 INFO L93 Difference]: Finished difference Result 14089 states and 19286 transitions. [2021-11-17 06:32:05,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:05,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 303 [2021-11-17 06:32:05,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:05,659 INFO L225 Difference]: With dead ends: 14089 [2021-11-17 06:32:05,660 INFO L226 Difference]: Without dead ends: 7061 [2021-11-17 06:32:05,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 301 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 06:32:05,681 INFO L933 BasicCegarLoop]: 3853 mSDtfsCounter, 3681 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3681 SdHoareTripleChecker+Valid, 3853 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 06:32:05,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3681 Valid, 3853 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-11-17 06:32:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-11-17 06:32:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2492759619362845) internal successors, (6039), 4895 states have internal predecessors, (6039), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-11-17 06:32:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9655 transitions. [2021-11-17 06:32:06,041 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9655 transitions. Word has length 303 [2021-11-17 06:32:06,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:06,043 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9655 transitions. [2021-11-17 06:32:06,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9655 transitions. [2021-11-17 06:32:06,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-17 06:32:06,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:06,051 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:06,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-17 06:32:06,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:06,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:06,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:06,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1224467345, now seen corresponding path program 1 times [2021-11-17 06:32:06,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:06,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551916129] [2021-11-17 06:32:06,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:06,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:06,338 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:06,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990211643] [2021-11-17 06:32:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:06,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:06,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:06,340 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 06:32:06,358 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 06:32:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:07,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 3947 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:07,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:08,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:08,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:08,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551916129] [2021-11-17 06:32:08,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:08,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990211643] [2021-11-17 06:32:08,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990211643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:08,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:08,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:08,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695575285] [2021-11-17 06:32:08,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:08,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:08,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:08,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:08,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:08,041 INFO L87 Difference]: Start difference. First operand 7061 states and 9655 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:08,181 INFO L93 Difference]: Finished difference Result 14089 states and 19280 transitions. [2021-11-17 06:32:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:08,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 304 [2021-11-17 06:32:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:08,233 INFO L225 Difference]: With dead ends: 14089 [2021-11-17 06:32:08,233 INFO L226 Difference]: Without dead ends: 7061 [2021-11-17 06:32:08,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 302 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 06:32:08,259 INFO L933 BasicCegarLoop]: 3852 mSDtfsCounter, 3679 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3679 SdHoareTripleChecker+Valid, 3852 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 06:32:08,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3679 Valid, 3852 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:08,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-11-17 06:32:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-11-17 06:32:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2486553578816715) internal successors, (6036), 4895 states have internal predecessors, (6036), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-11-17 06:32:08,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9652 transitions. [2021-11-17 06:32:08,537 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9652 transitions. Word has length 304 [2021-11-17 06:32:08,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:08,538 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9652 transitions. [2021-11-17 06:32:08,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:08,538 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9652 transitions. [2021-11-17 06:32:08,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-17 06:32:08,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:08,547 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:08,572 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 06:32:08,763 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,SelfDestructingSolverStorable3 [2021-11-17 06:32:08,764 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash -199992547, now seen corresponding path program 1 times [2021-11-17 06:32:08,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:08,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625453096] [2021-11-17 06:32:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:08,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:08,848 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:08,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954193072] [2021-11-17 06:32:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:08,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:08,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:08,864 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 06:32:08,865 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 06:32:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:09,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 3948 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:09,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:10,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:10,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:10,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625453096] [2021-11-17 06:32:10,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:10,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954193072] [2021-11-17 06:32:10,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954193072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:10,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:10,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:10,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761399588] [2021-11-17 06:32:10,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:10,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:10,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:10,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:10,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:10,393 INFO L87 Difference]: Start difference. First operand 7061 states and 9652 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:10,527 INFO L93 Difference]: Finished difference Result 14089 states and 19274 transitions. [2021-11-17 06:32:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:10,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 305 [2021-11-17 06:32:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:10,550 INFO L225 Difference]: With dead ends: 14089 [2021-11-17 06:32:10,550 INFO L226 Difference]: Without dead ends: 7061 [2021-11-17 06:32:10,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 303 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 06:32:10,573 INFO L933 BasicCegarLoop]: 3851 mSDtfsCounter, 3677 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3677 SdHoareTripleChecker+Valid, 3851 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 06:32:10,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3677 Valid, 3851 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:10,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-11-17 06:32:10,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-11-17 06:32:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2480347538270584) internal successors, (6033), 4895 states have internal predecessors, (6033), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-11-17 06:32:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9649 transitions. [2021-11-17 06:32:10,760 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9649 transitions. Word has length 305 [2021-11-17 06:32:10,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:10,760 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9649 transitions. [2021-11-17 06:32:10,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9649 transitions. [2021-11-17 06:32:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-17 06:32:10,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:10,766 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:10,790 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 06:32:10,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:10,981 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1294059635, now seen corresponding path program 1 times [2021-11-17 06:32:10,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:10,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075092093] [2021-11-17 06:32:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:10,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:11,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:11,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171991281] [2021-11-17 06:32:11,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:11,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:11,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:11,053 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 06:32:11,119 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 06:32:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:12,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 3949 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:12,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:12,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:12,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:12,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:12,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075092093] [2021-11-17 06:32:12,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:12,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171991281] [2021-11-17 06:32:12,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171991281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:12,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:12,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:12,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522674094] [2021-11-17 06:32:12,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:12,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:12,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:12,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:12,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:12,612 INFO L87 Difference]: Start difference. First operand 7061 states and 9649 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:12,742 INFO L93 Difference]: Finished difference Result 14089 states and 19268 transitions. [2021-11-17 06:32:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:12,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 306 [2021-11-17 06:32:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:12,762 INFO L225 Difference]: With dead ends: 14089 [2021-11-17 06:32:12,762 INFO L226 Difference]: Without dead ends: 7061 [2021-11-17 06:32:12,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 304 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 06:32:12,778 INFO L933 BasicCegarLoop]: 3850 mSDtfsCounter, 3675 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3675 SdHoareTripleChecker+Valid, 3850 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 06:32:12,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3675 Valid, 3850 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-11-17 06:32:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-11-17 06:32:12,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2474141497724451) internal successors, (6030), 4895 states have internal predecessors, (6030), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-11-17 06:32:12,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9646 transitions. [2021-11-17 06:32:12,966 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9646 transitions. Word has length 306 [2021-11-17 06:32:12,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:12,966 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9646 transitions. [2021-11-17 06:32:12,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9646 transitions. [2021-11-17 06:32:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-17 06:32:12,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:12,973 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:13,000 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 06:32:13,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:13,196 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:13,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:13,196 INFO L85 PathProgramCache]: Analyzing trace with hash -735884391, now seen corresponding path program 1 times [2021-11-17 06:32:13,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:13,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097717133] [2021-11-17 06:32:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:13,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:13,251 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:13,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517855846] [2021-11-17 06:32:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:13,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:13,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:13,253 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 06:32:13,291 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 06:32:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:14,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 3950 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:14,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:14,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:14,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:14,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097717133] [2021-11-17 06:32:14,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:14,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517855846] [2021-11-17 06:32:14,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517855846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:14,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:14,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:14,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773042150] [2021-11-17 06:32:14,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:14,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:14,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:14,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:14,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:14,794 INFO L87 Difference]: Start difference. First operand 7061 states and 9646 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:14,944 INFO L93 Difference]: Finished difference Result 14089 states and 19262 transitions. [2021-11-17 06:32:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:14,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 307 [2021-11-17 06:32:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:14,968 INFO L225 Difference]: With dead ends: 14089 [2021-11-17 06:32:14,968 INFO L226 Difference]: Without dead ends: 7061 [2021-11-17 06:32:14,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 305 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 06:32:14,986 INFO L933 BasicCegarLoop]: 3849 mSDtfsCounter, 3673 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3673 SdHoareTripleChecker+Valid, 3849 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 06:32:14,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3673 Valid, 3849 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-11-17 06:32:15,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-11-17 06:32:15,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.246793545717832) internal successors, (6027), 4895 states have internal predecessors, (6027), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-11-17 06:32:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9643 transitions. [2021-11-17 06:32:15,196 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9643 transitions. Word has length 307 [2021-11-17 06:32:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:15,198 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9643 transitions. [2021-11-17 06:32:15,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9643 transitions. [2021-11-17 06:32:15,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-11-17 06:32:15,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:15,204 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:15,245 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 06:32:15,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:15,412 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:15,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:15,413 INFO L85 PathProgramCache]: Analyzing trace with hash -497804407, now seen corresponding path program 1 times [2021-11-17 06:32:15,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:15,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282441891] [2021-11-17 06:32:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:15,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:15,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:15,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120824361] [2021-11-17 06:32:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:15,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:15,471 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 06:32:15,473 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 06:32:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:16,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 3951 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:16,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:16,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:16,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:16,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282441891] [2021-11-17 06:32:16,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:16,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120824361] [2021-11-17 06:32:16,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120824361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:16,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:16,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:16,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231530012] [2021-11-17 06:32:16,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:16,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:16,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:16,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:16,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:16,891 INFO L87 Difference]: Start difference. First operand 7061 states and 9643 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:17,062 INFO L93 Difference]: Finished difference Result 14089 states and 19256 transitions. [2021-11-17 06:32:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:17,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 308 [2021-11-17 06:32:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:17,092 INFO L225 Difference]: With dead ends: 14089 [2021-11-17 06:32:17,092 INFO L226 Difference]: Without dead ends: 7061 [2021-11-17 06:32:17,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 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 06:32:17,115 INFO L933 BasicCegarLoop]: 3848 mSDtfsCounter, 3671 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3671 SdHoareTripleChecker+Valid, 3848 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 06:32:17,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3671 Valid, 3848 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:17,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-11-17 06:32:17,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-11-17 06:32:17,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2461729416632188) internal successors, (6024), 4895 states have internal predecessors, (6024), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-11-17 06:32:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9640 transitions. [2021-11-17 06:32:17,365 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9640 transitions. Word has length 308 [2021-11-17 06:32:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:17,365 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9640 transitions. [2021-11-17 06:32:17,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9640 transitions. [2021-11-17 06:32:17,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-17 06:32:17,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:17,372 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:17,416 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 06:32:17,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:17,590 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:17,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:17,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1592742891, now seen corresponding path program 1 times [2021-11-17 06:32:17,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:17,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435055850] [2021-11-17 06:32:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:17,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:17,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:17,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592537106] [2021-11-17 06:32:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:17,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:17,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:17,676 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 06:32:17,677 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 06:32:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:18,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 3952 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:18,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:19,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:19,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:19,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435055850] [2021-11-17 06:32:19,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:19,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592537106] [2021-11-17 06:32:19,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592537106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:19,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:19,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:19,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966947660] [2021-11-17 06:32:19,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:19,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:19,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:19,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:19,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:19,042 INFO L87 Difference]: Start difference. First operand 7061 states and 9640 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:19,321 INFO L93 Difference]: Finished difference Result 14089 states and 19250 transitions. [2021-11-17 06:32:19,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:19,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 309 [2021-11-17 06:32:19,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:19,367 INFO L225 Difference]: With dead ends: 14089 [2021-11-17 06:32:19,367 INFO L226 Difference]: Without dead ends: 7061 [2021-11-17 06:32:19,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 307 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 06:32:19,392 INFO L933 BasicCegarLoop]: 3847 mSDtfsCounter, 3669 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3669 SdHoareTripleChecker+Valid, 3847 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 06:32:19,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3669 Valid, 3847 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:19,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-11-17 06:32:19,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-11-17 06:32:19,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2455523376086057) internal successors, (6021), 4895 states have internal predecessors, (6021), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-11-17 06:32:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9637 transitions. [2021-11-17 06:32:19,650 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9637 transitions. Word has length 309 [2021-11-17 06:32:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:19,651 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9637 transitions. [2021-11-17 06:32:19,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:19,651 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9637 transitions. [2021-11-17 06:32:19,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-17 06:32:19,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:19,658 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:19,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-17 06:32:19,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:19,871 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1061580923, now seen corresponding path program 1 times [2021-11-17 06:32:19,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:19,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923435415] [2021-11-17 06:32:19,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:19,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:19,937 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:19,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921702692] [2021-11-17 06:32:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:19,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:19,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:19,952 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 06:32:19,984 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 06:32:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:20,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 3953 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:20,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:21,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:21,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:21,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923435415] [2021-11-17 06:32:21,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:21,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921702692] [2021-11-17 06:32:21,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921702692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:21,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:21,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:21,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380371283] [2021-11-17 06:32:21,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:21,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:21,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:21,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:21,639 INFO L87 Difference]: Start difference. First operand 7061 states and 9637 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:21,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:21,913 INFO L93 Difference]: Finished difference Result 14089 states and 19244 transitions. [2021-11-17 06:32:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:21,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 310 [2021-11-17 06:32:21,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:21,939 INFO L225 Difference]: With dead ends: 14089 [2021-11-17 06:32:21,940 INFO L226 Difference]: Without dead ends: 7061 [2021-11-17 06:32:21,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 308 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 06:32:21,957 INFO L933 BasicCegarLoop]: 3846 mSDtfsCounter, 3667 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3667 SdHoareTripleChecker+Valid, 3846 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 06:32:21,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3667 Valid, 3846 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2021-11-17 06:32:22,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7061. [2021-11-17 06:32:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7061 states, 4834 states have (on average 1.2449317335539924) internal successors, (6018), 4895 states have internal predecessors, (6018), 1808 states have call successors, (1808), 419 states have call predecessors, (1808), 418 states have return successors, (1808), 1798 states have call predecessors, (1808), 1808 states have call successors, (1808) [2021-11-17 06:32:22,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7061 states to 7061 states and 9634 transitions. [2021-11-17 06:32:22,201 INFO L78 Accepts]: Start accepts. Automaton has 7061 states and 9634 transitions. Word has length 310 [2021-11-17 06:32:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:22,202 INFO L470 AbstractCegarLoop]: Abstraction has 7061 states and 9634 transitions. [2021-11-17 06:32:22,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:22,202 INFO L276 IsEmpty]: Start isEmpty. Operand 7061 states and 9634 transitions. [2021-11-17 06:32:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-17 06:32:22,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:22,209 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:22,254 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 06:32:22,431 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,SelfDestructingSolverStorable9 [2021-11-17 06:32:22,432 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:22,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:22,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1660912495, now seen corresponding path program 1 times [2021-11-17 06:32:22,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:22,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467519677] [2021-11-17 06:32:22,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:22,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:22,495 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:22,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733216818] [2021-11-17 06:32:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:22,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:22,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:22,500 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 06:32:22,532 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 06:32:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:23,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 3954 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:23,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:24,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:24,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:24,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467519677] [2021-11-17 06:32:24,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:24,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733216818] [2021-11-17 06:32:24,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733216818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:24,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:24,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:24,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184616469] [2021-11-17 06:32:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:24,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:24,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:24,051 INFO L87 Difference]: Start difference. First operand 7061 states and 9634 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:24,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:24,266 INFO L93 Difference]: Finished difference Result 14264 states and 19437 transitions. [2021-11-17 06:32:24,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:24,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 311 [2021-11-17 06:32:24,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:24,294 INFO L225 Difference]: With dead ends: 14264 [2021-11-17 06:32:24,294 INFO L226 Difference]: Without dead ends: 7236 [2021-11-17 06:32:24,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 309 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 06:32:24,316 INFO L933 BasicCegarLoop]: 3898 mSDtfsCounter, 3593 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3593 SdHoareTripleChecker+Valid, 4032 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 06:32:24,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3593 Valid, 4032 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:24,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-11-17 06:32:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-11-17 06:32:24,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.2439418416801293) internal successors, (6160), 5013 states have internal predecessors, (6160), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-11-17 06:32:24,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9830 transitions. [2021-11-17 06:32:24,628 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9830 transitions. Word has length 311 [2021-11-17 06:32:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:24,629 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9830 transitions. [2021-11-17 06:32:24,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:24,629 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9830 transitions. [2021-11-17 06:32:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-17 06:32:24,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:24,636 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:24,687 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 06:32:24,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:24,852 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:24,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1349161857, now seen corresponding path program 1 times [2021-11-17 06:32:24,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:24,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364738328] [2021-11-17 06:32:24,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:24,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:24,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:24,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125528801] [2021-11-17 06:32:24,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:24,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:24,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:24,943 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 06:32:24,989 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 06:32:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:25,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 3955 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:25,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:26,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:26,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:26,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364738328] [2021-11-17 06:32:26,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:26,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125528801] [2021-11-17 06:32:26,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125528801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:26,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:26,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:26,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055625267] [2021-11-17 06:32:26,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:26,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:26,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:26,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:26,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:26,517 INFO L87 Difference]: Start difference. First operand 7236 states and 9830 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:26,738 INFO L93 Difference]: Finished difference Result 14439 states and 19630 transitions. [2021-11-17 06:32:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:26,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 312 [2021-11-17 06:32:26,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:26,766 INFO L225 Difference]: With dead ends: 14439 [2021-11-17 06:32:26,766 INFO L226 Difference]: Without dead ends: 7236 [2021-11-17 06:32:26,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 310 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 06:32:26,785 INFO L933 BasicCegarLoop]: 3844 mSDtfsCounter, 3663 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3663 SdHoareTripleChecker+Valid, 3844 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 06:32:26,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3663 Valid, 3844 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:26,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-11-17 06:32:27,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-11-17 06:32:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.243336025848142) internal successors, (6157), 5013 states have internal predecessors, (6157), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-11-17 06:32:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9827 transitions. [2021-11-17 06:32:27,116 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9827 transitions. Word has length 312 [2021-11-17 06:32:27,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:27,117 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9827 transitions. [2021-11-17 06:32:27,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:27,117 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9827 transitions. [2021-11-17 06:32:27,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-17 06:32:27,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:27,123 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:27,149 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 06:32:27,349 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,SelfDestructingSolverStorable11 [2021-11-17 06:32:27,349 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:27,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:27,350 INFO L85 PathProgramCache]: Analyzing trace with hash 286702861, now seen corresponding path program 1 times [2021-11-17 06:32:27,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:27,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658252246] [2021-11-17 06:32:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:27,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:27,406 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:27,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164120545] [2021-11-17 06:32:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:27,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:27,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:27,407 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 06:32:27,409 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 06:32:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:28,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 3956 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:28,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:28,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:28,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:28,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658252246] [2021-11-17 06:32:28,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:28,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164120545] [2021-11-17 06:32:28,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164120545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:28,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:28,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:28,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987757397] [2021-11-17 06:32:28,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:28,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:28,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:28,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:28,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:28,765 INFO L87 Difference]: Start difference. First operand 7236 states and 9827 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:28,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:28,967 INFO L93 Difference]: Finished difference Result 14439 states and 19624 transitions. [2021-11-17 06:32:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:28,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 313 [2021-11-17 06:32:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:28,989 INFO L225 Difference]: With dead ends: 14439 [2021-11-17 06:32:28,990 INFO L226 Difference]: Without dead ends: 7236 [2021-11-17 06:32:29,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 311 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 06:32:29,006 INFO L933 BasicCegarLoop]: 3843 mSDtfsCounter, 3661 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3661 SdHoareTripleChecker+Valid, 3843 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 06:32:29,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3661 Valid, 3843 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-11-17 06:32:29,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-11-17 06:32:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.242730210016155) internal successors, (6154), 5013 states have internal predecessors, (6154), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-11-17 06:32:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9824 transitions. [2021-11-17 06:32:29,379 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9824 transitions. Word has length 313 [2021-11-17 06:32:29,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:29,380 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9824 transitions. [2021-11-17 06:32:29,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:29,380 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9824 transitions. [2021-11-17 06:32:29,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-17 06:32:29,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:29,385 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:29,412 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 06:32:29,611 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,SelfDestructingSolverStorable12 [2021-11-17 06:32:29,612 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:29,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1824728957, now seen corresponding path program 1 times [2021-11-17 06:32:29,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:29,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490587474] [2021-11-17 06:32:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:29,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:29,667 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:29,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265048970] [2021-11-17 06:32:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:29,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:29,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:29,671 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 06:32:29,674 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 06:32:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:30,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 3957 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:30,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:31,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:31,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:31,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490587474] [2021-11-17 06:32:31,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:31,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265048970] [2021-11-17 06:32:31,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265048970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:31,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:31,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:31,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395080215] [2021-11-17 06:32:31,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:31,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:31,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:31,203 INFO L87 Difference]: Start difference. First operand 7236 states and 9824 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:31,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:31,391 INFO L93 Difference]: Finished difference Result 14439 states and 19618 transitions. [2021-11-17 06:32:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:31,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 314 [2021-11-17 06:32:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:31,409 INFO L225 Difference]: With dead ends: 14439 [2021-11-17 06:32:31,410 INFO L226 Difference]: Without dead ends: 7236 [2021-11-17 06:32:31,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 312 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 06:32:31,426 INFO L933 BasicCegarLoop]: 3842 mSDtfsCounter, 3659 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3659 SdHoareTripleChecker+Valid, 3842 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 06:32:31,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3659 Valid, 3842 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:31,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-11-17 06:32:31,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-11-17 06:32:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.242124394184168) internal successors, (6151), 5013 states have internal predecessors, (6151), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-11-17 06:32:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9821 transitions. [2021-11-17 06:32:31,766 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9821 transitions. Word has length 314 [2021-11-17 06:32:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:31,766 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9821 transitions. [2021-11-17 06:32:31,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9821 transitions. [2021-11-17 06:32:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-17 06:32:31,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:31,771 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:31,794 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 06:32:31,975 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,SelfDestructingSolverStorable13 [2021-11-17 06:32:31,975 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:31,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:31,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1921553015, now seen corresponding path program 1 times [2021-11-17 06:32:31,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:31,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429930832] [2021-11-17 06:32:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:31,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:32,025 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:32,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227084805] [2021-11-17 06:32:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:32,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:32,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:32,027 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 06:32:32,068 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 06:32:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:33,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 3958 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:33,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:33,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:33,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:33,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:33,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429930832] [2021-11-17 06:32:33,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:33,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227084805] [2021-11-17 06:32:33,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227084805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:33,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:33,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:33,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627594361] [2021-11-17 06:32:33,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:33,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:33,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:33,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:33,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:33,464 INFO L87 Difference]: Start difference. First operand 7236 states and 9821 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:33,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:33,664 INFO L93 Difference]: Finished difference Result 14439 states and 19612 transitions. [2021-11-17 06:32:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:33,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 315 [2021-11-17 06:32:33,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:33,692 INFO L225 Difference]: With dead ends: 14439 [2021-11-17 06:32:33,693 INFO L226 Difference]: Without dead ends: 7236 [2021-11-17 06:32:33,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 313 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 06:32:33,712 INFO L933 BasicCegarLoop]: 3841 mSDtfsCounter, 3657 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3657 SdHoareTripleChecker+Valid, 3841 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 06:32:33,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3657 Valid, 3841 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:33,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-11-17 06:32:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-11-17 06:32:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.241518578352181) internal successors, (6148), 5013 states have internal predecessors, (6148), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-11-17 06:32:33,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9818 transitions. [2021-11-17 06:32:33,969 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9818 transitions. Word has length 315 [2021-11-17 06:32:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:33,970 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9818 transitions. [2021-11-17 06:32:33,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9818 transitions. [2021-11-17 06:32:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-17 06:32:33,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:33,975 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:33,999 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 06:32:34,187 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,SelfDestructingSolverStorable14 [2021-11-17 06:32:34,188 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:34,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:34,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1977660551, now seen corresponding path program 1 times [2021-11-17 06:32:34,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:34,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898643982] [2021-11-17 06:32:34,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:34,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:34,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:34,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398183552] [2021-11-17 06:32:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:34,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:34,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:34,239 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 06:32:34,263 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 06:32:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:35,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 3959 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:35,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:35,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:35,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:35,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898643982] [2021-11-17 06:32:35,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:35,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398183552] [2021-11-17 06:32:35,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398183552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:35,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:35,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:35,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109316589] [2021-11-17 06:32:35,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:35,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:35,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:35,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:35,666 INFO L87 Difference]: Start difference. First operand 7236 states and 9818 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:35,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:35,920 INFO L93 Difference]: Finished difference Result 14439 states and 19606 transitions. [2021-11-17 06:32:35,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:35,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 316 [2021-11-17 06:32:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:35,950 INFO L225 Difference]: With dead ends: 14439 [2021-11-17 06:32:35,950 INFO L226 Difference]: Without dead ends: 7236 [2021-11-17 06:32:35,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 314 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 06:32:35,972 INFO L933 BasicCegarLoop]: 3840 mSDtfsCounter, 3655 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3655 SdHoareTripleChecker+Valid, 3840 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 06:32:35,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3655 Valid, 3840 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-11-17 06:32:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-11-17 06:32:36,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.240912762520194) internal successors, (6145), 5013 states have internal predecessors, (6145), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-11-17 06:32:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9815 transitions. [2021-11-17 06:32:36,265 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9815 transitions. Word has length 316 [2021-11-17 06:32:36,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:36,266 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9815 transitions. [2021-11-17 06:32:36,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9815 transitions. [2021-11-17 06:32:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-17 06:32:36,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:36,272 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:36,299 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 06:32:36,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:36,488 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash 692489733, now seen corresponding path program 1 times [2021-11-17 06:32:36,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:36,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919172372] [2021-11-17 06:32:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:36,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:36,552 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:36,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559790993] [2021-11-17 06:32:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:36,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:36,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:36,553 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 06:32:36,554 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 06:32:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:37,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 3960 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:37,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:38,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:38,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:38,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919172372] [2021-11-17 06:32:38,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:38,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559790993] [2021-11-17 06:32:38,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559790993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:38,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:38,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:38,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728333575] [2021-11-17 06:32:38,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:38,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:38,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:38,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:38,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:38,079 INFO L87 Difference]: Start difference. First operand 7236 states and 9815 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:38,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:38,366 INFO L93 Difference]: Finished difference Result 14439 states and 19600 transitions. [2021-11-17 06:32:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:38,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 317 [2021-11-17 06:32:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:38,387 INFO L225 Difference]: With dead ends: 14439 [2021-11-17 06:32:38,388 INFO L226 Difference]: Without dead ends: 7236 [2021-11-17 06:32:38,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 315 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 06:32:38,405 INFO L933 BasicCegarLoop]: 3839 mSDtfsCounter, 3653 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3653 SdHoareTripleChecker+Valid, 3839 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 06:32:38,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3653 Valid, 3839 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2021-11-17 06:32:38,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2021-11-17 06:32:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 4952 states have (on average 1.2403069466882068) internal successors, (6142), 5013 states have internal predecessors, (6142), 1835 states have call successors, (1835), 449 states have call predecessors, (1835), 448 states have return successors, (1835), 1825 states have call predecessors, (1835), 1835 states have call successors, (1835) [2021-11-17 06:32:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 9812 transitions. [2021-11-17 06:32:38,668 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 9812 transitions. Word has length 317 [2021-11-17 06:32:38,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:38,668 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 9812 transitions. [2021-11-17 06:32:38,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:38,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 9812 transitions. [2021-11-17 06:32:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-17 06:32:38,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:38,674 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:38,696 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 06:32:38,895 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,SelfDestructingSolverStorable16 [2021-11-17 06:32:38,896 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1977286517, now seen corresponding path program 1 times [2021-11-17 06:32:38,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:38,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857144125] [2021-11-17 06:32:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:38,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:38,948 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:38,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172716171] [2021-11-17 06:32:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:38,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:38,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:38,958 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 06:32:38,973 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 06:32:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:39,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 3961 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:39,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:40,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:40,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:40,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857144125] [2021-11-17 06:32:40,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:40,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172716171] [2021-11-17 06:32:40,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172716171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:40,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:40,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-17 06:32:40,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026336533] [2021-11-17 06:32:40,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:40,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:40,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:40,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:40,478 INFO L87 Difference]: Start difference. First operand 7236 states and 9812 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:40,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:40,965 INFO L93 Difference]: Finished difference Result 21626 states and 29341 transitions. [2021-11-17 06:32:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:40,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 318 [2021-11-17 06:32:40,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:41,010 INFO L225 Difference]: With dead ends: 21626 [2021-11-17 06:32:41,011 INFO L226 Difference]: Without dead ends: 14423 [2021-11-17 06:32:41,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 316 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 06:32:41,032 INFO L933 BasicCegarLoop]: 4845 mSDtfsCounter, 3652 mSDsluCounter, 3777 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3652 SdHoareTripleChecker+Valid, 8622 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-17 06:32:41,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3652 Valid, 8622 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-17 06:32:41,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14423 states. [2021-11-17 06:32:41,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14423 to 14419. [2021-11-17 06:32:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14419 states, 9872 states have (on average 1.2407820097244733) internal successors, (12249), 10000 states have internal predecessors, (12249), 3652 states have call successors, (3652), 898 states have call predecessors, (3652), 894 states have return successors, (3652), 3624 states have call predecessors, (3652), 3652 states have call successors, (3652) [2021-11-17 06:32:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14419 states to 14419 states and 19553 transitions. [2021-11-17 06:32:41,698 INFO L78 Accepts]: Start accepts. Automaton has 14419 states and 19553 transitions. Word has length 318 [2021-11-17 06:32:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:41,699 INFO L470 AbstractCegarLoop]: Abstraction has 14419 states and 19553 transitions. [2021-11-17 06:32:41,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-17 06:32:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 14419 states and 19553 transitions. [2021-11-17 06:32:41,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-17 06:32:41,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:41,704 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 14, 14, 14, 14, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 06:32:41,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-17 06:32:41,922 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,SelfDestructingSolverStorable17 [2021-11-17 06:32:41,923 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:41,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:41,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2005915668, now seen corresponding path program 1 times [2021-11-17 06:32:41,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:41,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15213859] [2021-11-17 06:32:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:41,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:41,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:41,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656629798] [2021-11-17 06:32:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:41,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:41,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:41,977 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 06:32:41,978 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 06:32:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:42,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 3960 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:42,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2021-11-17 06:32:43,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:43,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:43,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15213859] [2021-11-17 06:32:43,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:43,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656629798] [2021-11-17 06:32:43,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656629798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:43,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:43,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 06:32:43,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851239083] [2021-11-17 06:32:43,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:43,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:43,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:43,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:43,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:43,377 INFO L87 Difference]: Start difference. First operand 14419 states and 19553 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 06:32:45,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:32:46,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:46,237 INFO L93 Difference]: Finished difference Result 34642 states and 46943 transitions. [2021-11-17 06:32:46,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:46,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 318 [2021-11-17 06:32:46,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:46,313 INFO L225 Difference]: With dead ends: 34642 [2021-11-17 06:32:46,314 INFO L226 Difference]: Without dead ends: 20256 [2021-11-17 06:32:46,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 316 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 06:32:46,345 INFO L933 BasicCegarLoop]: 5312 mSDtfsCounter, 2664 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2664 SdHoareTripleChecker+Valid, 9034 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-17 06:32:46,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2664 Valid, 9034 Invalid, 94 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-17 06:32:46,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20256 states. [2021-11-17 06:32:47,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20256 to 20250. [2021-11-17 06:32:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20250 states, 13896 states have (on average 1.2406447898675879) internal successors, (17240), 14063 states have internal predecessors, (17240), 5068 states have call successors, (5068), 1290 states have call predecessors, (5068), 1285 states have return successors, (5068), 5030 states have call predecessors, (5068), 5068 states have call successors, (5068) [2021-11-17 06:32:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20250 states to 20250 states and 27376 transitions. [2021-11-17 06:32:47,233 INFO L78 Accepts]: Start accepts. Automaton has 20250 states and 27376 transitions. Word has length 318 [2021-11-17 06:32:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:47,234 INFO L470 AbstractCegarLoop]: Abstraction has 20250 states and 27376 transitions. [2021-11-17 06:32:47,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-17 06:32:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 20250 states and 27376 transitions. [2021-11-17 06:32:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-17 06:32:47,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:47,241 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 14, 14, 14, 14, 14, 14, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:32:47,264 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 06:32:47,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:47,456 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:47,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:47,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1082601343, now seen corresponding path program 1 times [2021-11-17 06:32:47,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:47,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756210651] [2021-11-17 06:32:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:47,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:47,579 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:47,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [860722727] [2021-11-17 06:32:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:47,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:47,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:47,581 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 06:32:47,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-17 06:32:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:48,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 4154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:48,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2021-11-17 06:32:49,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:49,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:49,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756210651] [2021-11-17 06:32:49,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:49,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860722727] [2021-11-17 06:32:49,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860722727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:49,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:49,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 06:32:49,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306225574] [2021-11-17 06:32:49,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:49,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:49,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:49,151 INFO L87 Difference]: Start difference. First operand 20250 states and 27376 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-17 06:32:51,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:32:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:52,380 INFO L93 Difference]: Finished difference Result 47320 states and 63920 transitions. [2021-11-17 06:32:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:52,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 370 [2021-11-17 06:32:52,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:52,458 INFO L225 Difference]: With dead ends: 47320 [2021-11-17 06:32:52,458 INFO L226 Difference]: Without dead ends: 27103 [2021-11-17 06:32:52,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 368 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 06:32:52,502 INFO L933 BasicCegarLoop]: 4721 mSDtfsCounter, 3351 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3351 SdHoareTripleChecker+Valid, 8053 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-17 06:32:52,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3351 Valid, 8053 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-17 06:32:52,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27103 states. [2021-11-17 06:32:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27103 to 27097. [2021-11-17 06:32:53,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27097 states, 18672 states have (on average 1.24175235646958) internal successors, (23186), 18888 states have internal predecessors, (23186), 6684 states have call successors, (6684), 1746 states have call predecessors, (6684), 1740 states have return successors, (6684), 6634 states have call predecessors, (6684), 6684 states have call successors, (6684) [2021-11-17 06:32:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27097 states to 27097 states and 36554 transitions. [2021-11-17 06:32:53,790 INFO L78 Accepts]: Start accepts. Automaton has 27097 states and 36554 transitions. Word has length 370 [2021-11-17 06:32:53,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:53,791 INFO L470 AbstractCegarLoop]: Abstraction has 27097 states and 36554 transitions. [2021-11-17 06:32:53,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-17 06:32:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 27097 states and 36554 transitions. [2021-11-17 06:32:53,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-17 06:32:53,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:53,802 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 14, 14, 14, 14, 14, 14, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:32:53,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-17 06:32:54,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:54,016 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:54,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1841468737, now seen corresponding path program 1 times [2021-11-17 06:32:54,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:54,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145632820] [2021-11-17 06:32:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:54,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:54,066 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:54,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325026231] [2021-11-17 06:32:54,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:54,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:54,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:54,068 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 06:32:54,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-17 06:32:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:32:55,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 4225 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:32:55,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:32:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2021-11-17 06:32:55,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:32:55,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:32:55,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145632820] [2021-11-17 06:32:55,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:32:55,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325026231] [2021-11-17 06:32:55,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325026231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:32:55,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:32:55,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 06:32:55,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379673203] [2021-11-17 06:32:55,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:32:55,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:32:55,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:32:55,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:32:55,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:32:55,722 INFO L87 Difference]: Start difference. First operand 27097 states and 36554 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-17 06:32:57,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:32:57,153 INFO L93 Difference]: Finished difference Result 60000 states and 80929 transitions. [2021-11-17 06:32:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:32:57,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 402 [2021-11-17 06:32:57,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:32:57,262 INFO L225 Difference]: With dead ends: 60000 [2021-11-17 06:32:57,263 INFO L226 Difference]: Without dead ends: 32936 [2021-11-17 06:32:57,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 400 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 06:32:57,341 INFO L933 BasicCegarLoop]: 5207 mSDtfsCounter, 3708 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3708 SdHoareTripleChecker+Valid, 7876 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 06:32:57,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3708 Valid, 7876 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 06:32:57,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32936 states. [2021-11-17 06:32:58,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32936 to 32930. [2021-11-17 06:32:58,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32930 states, 22692 states have (on average 1.2420676890534108) internal successors, (28185), 22947 states have internal predecessors, (28185), 8098 states have call successors, (8098), 2146 states have call predecessors, (8098), 2139 states have return successors, (8098), 8038 states have call predecessors, (8098), 8098 states have call successors, (8098) [2021-11-17 06:32:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32930 states to 32930 states and 44381 transitions. [2021-11-17 06:32:58,873 INFO L78 Accepts]: Start accepts. Automaton has 32930 states and 44381 transitions. Word has length 402 [2021-11-17 06:32:58,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:32:58,873 INFO L470 AbstractCegarLoop]: Abstraction has 32930 states and 44381 transitions. [2021-11-17 06:32:58,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-17 06:32:58,874 INFO L276 IsEmpty]: Start isEmpty. Operand 32930 states and 44381 transitions. [2021-11-17 06:32:58,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-11-17 06:32:58,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:32:58,883 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 14, 14, 14, 14, 14, 14, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:32:58,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-17 06:32:59,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:59,104 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:32:59,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:32:59,104 INFO L85 PathProgramCache]: Analyzing trace with hash -252109699, now seen corresponding path program 1 times [2021-11-17 06:32:59,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:32:59,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374203169] [2021-11-17 06:32:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:59,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:32:59,152 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:32:59,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344768651] [2021-11-17 06:32:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:32:59,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:32:59,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:32:59,154 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 06:32:59,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-17 06:33:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:00,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 4244 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:33:00,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:33:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2021-11-17 06:33:00,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:33:00,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:33:00,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374203169] [2021-11-17 06:33:00,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:33:00,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344768651] [2021-11-17 06:33:00,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344768651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:33:00,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:33:00,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 06:33:00,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274054340] [2021-11-17 06:33:00,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:33:00,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:33:00,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:33:00,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:33:00,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:33:00,910 INFO L87 Difference]: Start difference. First operand 32930 states and 44381 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-17 06:33:02,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:33:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:33:04,720 INFO L93 Difference]: Finished difference Result 71036 states and 95673 transitions. [2021-11-17 06:33:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:33:04,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 424 [2021-11-17 06:33:04,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:33:04,868 INFO L225 Difference]: With dead ends: 71036 [2021-11-17 06:33:04,869 INFO L226 Difference]: Without dead ends: 38139 [2021-11-17 06:33:04,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 422 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 06:33:04,933 INFO L933 BasicCegarLoop]: 4801 mSDtfsCounter, 3316 mSDsluCounter, 3358 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3316 SdHoareTripleChecker+Valid, 8159 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-17 06:33:04,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3316 Valid, 8159 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 64 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-17 06:33:04,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38139 states. [2021-11-17 06:33:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38139 to 38133. [2021-11-17 06:33:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38133 states, 26316 states have (on average 1.2422100623195014) internal successors, (32690), 26610 states have internal predecessors, (32690), 9318 states have call successors, (9318), 2506 states have call predecessors, (9318), 2498 states have return successors, (9318), 9248 states have call predecessors, (9318), 9318 states have call successors, (9318) [2021-11-17 06:33:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38133 states to 38133 states and 51326 transitions. [2021-11-17 06:33:06,938 INFO L78 Accepts]: Start accepts. Automaton has 38133 states and 51326 transitions. Word has length 424 [2021-11-17 06:33:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:33:06,939 INFO L470 AbstractCegarLoop]: Abstraction has 38133 states and 51326 transitions. [2021-11-17 06:33:06,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-17 06:33:06,939 INFO L276 IsEmpty]: Start isEmpty. Operand 38133 states and 51326 transitions. [2021-11-17 06:33:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-11-17 06:33:06,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:33:06,947 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 14, 14, 14, 14, 14, 14, 9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:06,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-17 06:33:07,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-17 06:33:07,170 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:33:07,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:33:07,171 INFO L85 PathProgramCache]: Analyzing trace with hash -203877475, now seen corresponding path program 1 times [2021-11-17 06:33:07,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:33:07,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323596841] [2021-11-17 06:33:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:33:07,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:33:07,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:33:07,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047149886] [2021-11-17 06:33:07,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:33:07,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:33:07,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:33:07,256 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 06:33:07,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-17 06:33:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:08,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 4257 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:33:08,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:33:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2021-11-17 06:33:08,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:33:08,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:33:08,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323596841] [2021-11-17 06:33:08,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:33:08,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047149886] [2021-11-17 06:33:08,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047149886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:33:08,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:33:08,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 06:33:08,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990369429] [2021-11-17 06:33:08,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:33:08,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:33:08,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:33:08,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:33:08,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:33:08,874 INFO L87 Difference]: Start difference. First operand 38133 states and 51326 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-17 06:33:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:33:10,841 INFO L93 Difference]: Finished difference Result 81190 states and 109247 transitions. [2021-11-17 06:33:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:33:10,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 433 [2021-11-17 06:33:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:33:11,040 INFO L225 Difference]: With dead ends: 81190 [2021-11-17 06:33:11,041 INFO L226 Difference]: Without dead ends: 43090 [2021-11-17 06:33:11,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 431 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 06:33:11,289 INFO L933 BasicCegarLoop]: 6264 mSDtfsCounter, 3358 mSDsluCounter, 3307 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3358 SdHoareTripleChecker+Valid, 9571 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 06:33:11,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3358 Valid, 9571 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 06:33:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43090 states. [2021-11-17 06:33:13,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43090 to 43084. [2021-11-17 06:33:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43084 states, 29746 states have (on average 1.2406037786593156) internal successors, (36903), 30079 states have internal predecessors, (36903), 10506 states have call successors, (10506), 2840 states have call predecessors, (10506), 2831 states have return successors, (10506), 10426 states have call predecessors, (10506), 10506 states have call successors, (10506) [2021-11-17 06:33:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43084 states to 43084 states and 57915 transitions. [2021-11-17 06:33:13,639 INFO L78 Accepts]: Start accepts. Automaton has 43084 states and 57915 transitions. Word has length 433 [2021-11-17 06:33:13,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:33:13,640 INFO L470 AbstractCegarLoop]: Abstraction has 43084 states and 57915 transitions. [2021-11-17 06:33:13,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-17 06:33:13,640 INFO L276 IsEmpty]: Start isEmpty. Operand 43084 states and 57915 transitions. [2021-11-17 06:33:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-11-17 06:33:13,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:33:13,652 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 14, 14, 14, 14, 14, 14, 9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:13,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-17 06:33:13,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-17 06:33:13,876 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:33:13,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:33:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1955206619, now seen corresponding path program 1 times [2021-11-17 06:33:13,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:33:13,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494589230] [2021-11-17 06:33:13,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:33:13,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:33:13,940 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:33:13,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840266556] [2021-11-17 06:33:13,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:33:13,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:33:13,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:33:13,942 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 06:33:13,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-17 06:33:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:15,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 4258 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-17 06:33:15,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:33:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1450 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2021-11-17 06:33:15,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:33:15,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:33:15,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494589230] [2021-11-17 06:33:15,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:33:15,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840266556] [2021-11-17 06:33:15,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840266556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:33:15,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:33:15,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-17 06:33:15,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497739449] [2021-11-17 06:33:15,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:33:15,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-17 06:33:15,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:33:15,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-17 06:33:15,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-17 06:33:15,700 INFO L87 Difference]: Start difference. First operand 43084 states and 57915 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-17 06:33:17,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:33:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:33:19,991 INFO L93 Difference]: Finished difference Result 91086 states and 122421 transitions. [2021-11-17 06:33:19,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-17 06:33:19,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 433 [2021-11-17 06:33:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:33:20,206 INFO L225 Difference]: With dead ends: 91086 [2021-11-17 06:33:20,206 INFO L226 Difference]: Without dead ends: 48035 [2021-11-17 06:33:20,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 431 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 06:33:20,535 INFO L933 BasicCegarLoop]: 5798 mSDtfsCounter, 3277 mSDsluCounter, 3371 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3277 SdHoareTripleChecker+Valid, 9169 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-17 06:33:20,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3277 Valid, 9169 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 69 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-17 06:33:20,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48035 states. [2021-11-17 06:33:22,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48035 to 48029. [2021-11-17 06:33:22,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48029 states, 33172 states have (on average 1.240443747739057) internal successors, (41148), 33544 states have internal predecessors, (41148), 11694 states have call successors, (11694), 3172 states have call predecessors, (11694), 3162 states have return successors, (11694), 11604 states have call predecessors, (11694), 11694 states have call successors, (11694) [2021-11-17 06:33:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48029 states to 48029 states and 64536 transitions. [2021-11-17 06:33:22,828 INFO L78 Accepts]: Start accepts. Automaton has 48029 states and 64536 transitions. Word has length 433 [2021-11-17 06:33:22,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:33:22,829 INFO L470 AbstractCegarLoop]: Abstraction has 48029 states and 64536 transitions. [2021-11-17 06:33:22,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 3 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-17 06:33:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 48029 states and 64536 transitions. [2021-11-17 06:33:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-17 06:33:22,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:33:22,842 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 14, 14, 14, 14, 14, 14, 11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:22,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-17 06:33:23,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:33:23,064 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:33:23,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:33:23,064 INFO L85 PathProgramCache]: Analyzing trace with hash -532861501, now seen corresponding path program 1 times [2021-11-17 06:33:23,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:33:23,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291813264] [2021-11-17 06:33:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:33:23,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:33:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 06:33:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 06:33:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 06:33:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 06:33:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 06:33:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 06:33:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 06:33:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 06:33:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 06:33:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 06:33:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-17 06:33:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 06:33:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-17 06:33:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-17 06:33:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 06:33:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-17 06:33:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 06:33:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-11-17 06:33:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-17 06:33:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-17 06:33:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-11-17 06:33:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-11-17 06:33:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-17 06:33:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:33:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 06:33:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-11-17 06:33:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 06:33:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 06:33:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-11-17 06:33:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-11-17 06:33:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-11-17 06:33:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-11-17 06:33:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-11-17 06:33:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-11-17 06:33:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-11-17 06:33:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-11-17 06:33:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-11-17 06:33:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2021-11-17 06:33:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-11-17 06:33:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2021-11-17 06:33:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-11-17 06:33:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 06:33:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2021-11-17 06:33:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2021-11-17 06:33:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 1637 trivial. 0 not checked. [2021-11-17 06:33:23,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:33:23,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291813264] [2021-11-17 06:33:23,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291813264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:33:23,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:33:23,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 06:33:23,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601337106] [2021-11-17 06:33:23,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:33:23,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 06:33:23,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:33:23,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 06:33:23,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 06:33:23,542 INFO L87 Difference]: Start difference. First operand 48029 states and 64536 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-17 06:33:25,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:33:27,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:33:29,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:33:34,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:33:37,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 06:33:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:33:42,516 INFO L93 Difference]: Finished difference Result 111904 states and 152603 transitions. [2021-11-17 06:33:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-17 06:33:42,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 491 [2021-11-17 06:33:42,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:33:42,723 INFO L225 Difference]: With dead ends: 111904 [2021-11-17 06:33:42,724 INFO L226 Difference]: Without dead ends: 63908 [2021-11-17 06:33:42,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-17 06:33:42,829 INFO L933 BasicCegarLoop]: 4887 mSDtfsCounter, 4510 mSDsluCounter, 6384 mSDsCounter, 0 mSdLazyCounter, 4661 mSolverCounterSat, 3217 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4943 SdHoareTripleChecker+Valid, 11271 SdHoareTripleChecker+Invalid, 7881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3217 IncrementalHoareTripleChecker+Valid, 4661 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-11-17 06:33:42,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4943 Valid, 11271 Invalid, 7881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3217 Valid, 4661 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2021-11-17 06:33:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63908 states. [2021-11-17 06:33:45,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63908 to 52950. [2021-11-17 06:33:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52950 states, 36574 states have (on average 1.2402526384863564) internal successors, (45361), 36985 states have internal predecessors, (45361), 12882 states have call successors, (12882), 3504 states have call predecessors, (12882), 3493 states have return successors, (12882), 12782 states have call predecessors, (12882), 12882 states have call successors, (12882) [2021-11-17 06:33:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52950 states to 52950 states and 71125 transitions. [2021-11-17 06:33:45,610 INFO L78 Accepts]: Start accepts. Automaton has 52950 states and 71125 transitions. Word has length 491 [2021-11-17 06:33:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:33:45,611 INFO L470 AbstractCegarLoop]: Abstraction has 52950 states and 71125 transitions. [2021-11-17 06:33:45,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 3 states have internal predecessors, (206), 3 states have call successors, (46), 4 states have call predecessors, (46), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-17 06:33:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 52950 states and 71125 transitions. [2021-11-17 06:33:45,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-17 06:33:45,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:33:45,624 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 14, 14, 14, 14, 14, 14, 11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:45,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-17 06:33:45,625 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:33:45,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:33:45,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1626222593, now seen corresponding path program 1 times [2021-11-17 06:33:45,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:33:45,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821233003] [2021-11-17 06:33:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:33:45,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:33:45,691 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:33:45,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732368720] [2021-11-17 06:33:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:33:45,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:33:45,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:33:45,696 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 06:33:45,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-17 06:33:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:46,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 4490 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 06:33:46,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:33:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 1612 trivial. 0 not checked. [2021-11-17 06:33:47,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:33:47,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:33:47,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821233003] [2021-11-17 06:33:47,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:33:47,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732368720] [2021-11-17 06:33:47,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732368720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:33:47,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:33:47,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 06:33:47,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937022743] [2021-11-17 06:33:47,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:33:47,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 06:33:47,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:33:47,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 06:33:47,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 06:33:47,631 INFO L87 Difference]: Start difference. First operand 52950 states and 71125 transitions. Second operand has 5 states, 5 states have (on average 37.8) internal successors, (189), 4 states have internal predecessors, (189), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-17 06:33:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 06:33:50,338 INFO L93 Difference]: Finished difference Result 116933 states and 157114 transitions. [2021-11-17 06:33:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 06:33:50,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 4 states have internal predecessors, (189), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 491 [2021-11-17 06:33:50,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 06:33:50,578 INFO L225 Difference]: With dead ends: 116933 [2021-11-17 06:33:50,578 INFO L226 Difference]: Without dead ends: 64016 [2021-11-17 06:33:50,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 06:33:50,714 INFO L933 BasicCegarLoop]: 6526 mSDtfsCounter, 3010 mSDsluCounter, 16707 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3010 SdHoareTripleChecker+Valid, 23233 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-17 06:33:50,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3010 Valid, 23233 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-17 06:33:50,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64016 states. [2021-11-17 06:33:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64016 to 63994. [2021-11-17 06:33:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63994 states, 44180 states have (on average 1.2399954730647351) internal successors, (54783), 44691 states have internal predecessors, (54783), 15568 states have call successors, (15568), 4254 states have call predecessors, (15568), 4245 states have return successors, (15572), 15450 states have call predecessors, (15572), 15568 states have call successors, (15572) [2021-11-17 06:33:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63994 states to 63994 states and 85923 transitions. [2021-11-17 06:33:54,102 INFO L78 Accepts]: Start accepts. Automaton has 63994 states and 85923 transitions. Word has length 491 [2021-11-17 06:33:54,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 06:33:54,103 INFO L470 AbstractCegarLoop]: Abstraction has 63994 states and 85923 transitions. [2021-11-17 06:33:54,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.8) internal successors, (189), 4 states have internal predecessors, (189), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-17 06:33:54,103 INFO L276 IsEmpty]: Start isEmpty. Operand 63994 states and 85923 transitions. [2021-11-17 06:33:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2021-11-17 06:33:54,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 06:33:54,117 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 14, 14, 14, 14, 14, 14, 11, 11, 11, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:54,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-17 06:33:54,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:33:54,325 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-17 06:33:54,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 06:33:54,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2134602281, now seen corresponding path program 1 times [2021-11-17 06:33:54,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 06:33:54,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124674058] [2021-11-17 06:33:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:33:54,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 06:33:54,423 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-17 06:33:54,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594189665] [2021-11-17 06:33:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 06:33:54,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-17 06:33:54,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 06:33:54,440 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-17 06:33:54,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-17 06:33:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 06:33:55,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 4491 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-17 06:33:55,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-17 06:33:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 1612 trivial. 0 not checked. [2021-11-17 06:33:56,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-17 06:33:56,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 06:33:56,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124674058] [2021-11-17 06:33:56,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-17 06:33:56,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594189665] [2021-11-17 06:33:56,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594189665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 06:33:56,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 06:33:56,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 06:33:56,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277843339] [2021-11-17 06:33:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 06:33:56,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 06:33:56,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 06:33:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 06:33:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-17 06:33:56,112 INFO L87 Difference]: Start difference. First operand 63994 states and 85923 transitions. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (45), 3 states have call predecessors, (45), 4 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-17 06:33:58,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []