./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.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 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 08:16:58,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 08:16:58,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 08:16:58,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 08:16:58,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 08:16:58,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 08:16:58,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 08:16:58,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 08:16:58,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 08:16:58,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 08:16:58,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 08:16:58,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 08:16:58,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 08:16:58,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 08:16:58,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 08:16:58,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 08:16:58,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 08:16:58,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 08:16:58,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 08:16:58,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 08:16:58,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 08:16:58,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 08:16:58,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 08:16:58,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 08:16:58,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 08:16:58,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 08:16:58,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 08:16:58,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 08:16:58,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 08:16:58,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 08:16:58,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 08:16:58,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 08:16:58,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 08:16:58,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 08:16:58,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 08:16:58,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 08:16:58,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 08:16:58,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 08:16:58,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 08:16:58,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 08:16:58,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 08:16:58,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 08:16:58,248 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 08:16:58,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 08:16:58,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 08:16:58,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 08:16:58,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 08:16:58,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 08:16:58,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 08:16:58,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 08:16:58,252 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 08:16:58,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 08:16:58,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 08:16:58,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 08:16:58,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 08:16:58,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 08:16:58,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 08:16:58,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 08:16:58,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 08:16:58,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 08:16:58,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 08:16:58,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 08:16:58,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 08:16:58,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 08:16:58,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 08:16:58,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 08:16:58,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 08:16:58,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 08:16:58,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 08:16:58,256 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 08:16:58,256 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 08:16:58,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 08:16:58,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 08:16:58,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 [2021-12-18 08:16:58,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 08:16:58,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 08:16:58,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 08:16:58,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 08:16:58,583 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 08:16:58,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-12-18 08:16:58,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5289733f/0c8a16dd00fe49888baa967b1bb659c2/FLAG8d5929ae3 [2021-12-18 08:16:59,459 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 08:16:59,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-12-18 08:16:59,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5289733f/0c8a16dd00fe49888baa967b1bb659c2/FLAG8d5929ae3 [2021-12-18 08:17:00,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5289733f/0c8a16dd00fe49888baa967b1bb659c2 [2021-12-18 08:17:00,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 08:17:00,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 08:17:00,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 08:17:00,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 08:17:00,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 08:17:00,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:17:00" (1/1) ... [2021-12-18 08:17:00,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40100ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:00, skipping insertion in model container [2021-12-18 08:17:00,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 08:17:00" (1/1) ... [2021-12-18 08:17:00,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 08:17:00,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 08:17:01,383 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2021-12-18 08:17:01,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 08:17:01,487 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 08:17:01,788 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2021-12-18 08:17:01,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 08:17:01,933 INFO L208 MainTranslator]: Completed translation [2021-12-18 08:17:01,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01 WrapperNode [2021-12-18 08:17:01,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 08:17:01,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 08:17:01,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 08:17:01,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 08:17:01,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01" (1/1) ... [2021-12-18 08:17:02,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01" (1/1) ... [2021-12-18 08:17:02,154 INFO L137 Inliner]: procedures = 176, calls = 1181, calls flagged for inlining = 84, calls inlined = 81, statements flattened = 2539 [2021-12-18 08:17:02,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 08:17:02,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 08:17:02,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 08:17:02,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 08:17:02,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01" (1/1) ... [2021-12-18 08:17:02,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01" (1/1) ... [2021-12-18 08:17:02,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01" (1/1) ... [2021-12-18 08:17:02,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01" (1/1) ... [2021-12-18 08:17:02,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01" (1/1) ... [2021-12-18 08:17:02,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01" (1/1) ... [2021-12-18 08:17:02,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01" (1/1) ... [2021-12-18 08:17:02,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 08:17:02,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 08:17:02,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 08:17:02,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 08:17:02,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01" (1/1) ... [2021-12-18 08:17:02,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 08:17:02,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 08:17:02,385 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) [2021-12-18 08:17:02,395 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 [2021-12-18 08:17:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure el3_config [2021-12-18 08:17:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure el3_config [2021-12-18 08:17:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 08:17:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 08:17:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 08:17:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 08:17:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 08:17:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-12-18 08:17:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-12-18 08:17:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-12-18 08:17:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-12-18 08:17:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-18 08:17:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-18 08:17:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-18 08:17:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-18 08:17:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 08:17:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 08:17:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-18 08:17:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-18 08:17:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-12-18 08:17:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-12-18 08:17:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 08:17:02,425 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 08:17:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 08:17:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-12-18 08:17:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-12-18 08:17:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 08:17:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 08:17:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 08:17:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 08:17:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 08:17:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 08:17:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 08:17:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 08:17:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 08:17:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 08:17:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 08:17:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure tc589_reset [2021-12-18 08:17:02,428 INFO L138 BoogieDeclarations]: Found implementation of procedure tc589_reset [2021-12-18 08:17:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 08:17:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-12-18 08:17:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-12-18 08:17:02,429 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_dev_present [2021-12-18 08:17:02,429 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_dev_present [2021-12-18 08:17:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 08:17:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 08:17:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-12-18 08:17:02,430 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-12-18 08:17:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure el3_rx [2021-12-18 08:17:02,430 INFO L138 BoogieDeclarations]: Found implementation of procedure el3_rx [2021-12-18 08:17:02,430 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-18 08:17:02,431 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-18 08:17:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 08:17:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-18 08:17:02,431 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-18 08:17:02,431 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-18 08:17:02,432 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-18 08:17:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure tc589_set_xcvr [2021-12-18 08:17:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure tc589_set_xcvr [2021-12-18 08:17:02,433 INFO L130 BoogieDeclarations]: Found specification of procedure tc589_release [2021-12-18 08:17:02,433 INFO L138 BoogieDeclarations]: Found implementation of procedure tc589_release [2021-12-18 08:17:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-12-18 08:17:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-12-18 08:17:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-18 08:17:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-18 08:17:02,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-18 08:17:02,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-18 08:17:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure el3_get_stats [2021-12-18 08:17:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure el3_get_stats [2021-12-18 08:17:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 08:17:02,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 08:17:02,435 INFO L130 BoogieDeclarations]: Found specification of procedure tc589_detach [2021-12-18 08:17:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure tc589_detach [2021-12-18 08:17:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure tc589_wait_for_completion [2021-12-18 08:17:02,436 INFO L138 BoogieDeclarations]: Found implementation of procedure tc589_wait_for_completion [2021-12-18 08:17:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 08:17:02,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 08:17:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2021-12-18 08:17:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2021-12-18 08:17:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-18 08:17:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-18 08:17:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-18 08:17:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-18 08:17:02,437 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-12-18 08:17:02,437 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-12-18 08:17:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-12-18 08:17:02,438 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-12-18 08:17:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 08:17:02,438 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 08:17:02,438 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-18 08:17:02,439 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-18 08:17:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 08:17:02,439 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 08:17:02,439 INFO L130 BoogieDeclarations]: Found specification of procedure pop_tx_status [2021-12-18 08:17:02,439 INFO L138 BoogieDeclarations]: Found implementation of procedure pop_tx_status [2021-12-18 08:17:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 08:17:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-12-18 08:17:02,440 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-12-18 08:17:02,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 08:17:02,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 08:17:02,441 INFO L130 BoogieDeclarations]: Found specification of procedure el3_tx_timeout [2021-12-18 08:17:02,441 INFO L138 BoogieDeclarations]: Found implementation of procedure el3_tx_timeout [2021-12-18 08:17:02,948 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 08:17:02,950 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 08:17:03,293 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 08:17:08,734 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 08:17:08,753 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 08:17:08,753 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 08:17:08,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:17:08 BoogieIcfgContainer [2021-12-18 08:17:08,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 08:17:08,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 08:17:08,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 08:17:08,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 08:17:08,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 08:17:00" (1/3) ... [2021-12-18 08:17:08,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51efefe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:17:08, skipping insertion in model container [2021-12-18 08:17:08,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 08:17:01" (2/3) ... [2021-12-18 08:17:08,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51efefe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 08:17:08, skipping insertion in model container [2021-12-18 08:17:08,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 08:17:08" (3/3) ... [2021-12-18 08:17:08,767 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-12-18 08:17:08,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 08:17:08,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 08:17:08,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 08:17:08,826 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 [2021-12-18 08:17:08,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 08:17:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 876 states, 593 states have (on average 1.3709949409780775) internal successors, (813), 631 states have internal predecessors, (813), 237 states have call successors, (237), 45 states have call predecessors, (237), 44 states have return successors, (231), 222 states have call predecessors, (231), 231 states have call successors, (231) [2021-12-18 08:17:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-18 08:17:08,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:17:08,925 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-12-18 08:17:08,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:17:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:17:08,936 INFO L85 PathProgramCache]: Analyzing trace with hash -877321201, now seen corresponding path program 1 times [2021-12-18 08:17:08,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:17:08,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5835809] [2021-12-18 08:17:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:17:08,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:17:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:17:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:17:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:17:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:17:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:17:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:17:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 08:17:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 08:17:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 08:17:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 08:17:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 08:17:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 08:17:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 08:17:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 08:17:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 08:17:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 08:17:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 08:17:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-18 08:17:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-18 08:17:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-18 08:17:10,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:17:10,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5835809] [2021-12-18 08:17:10,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5835809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:17:10,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:17:10,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 08:17:10,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164048639] [2021-12-18 08:17:10,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:17:10,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 08:17:10,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:17:10,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 08:17:10,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 08:17:10,660 INFO L87 Difference]: Start difference. First operand has 876 states, 593 states have (on average 1.3709949409780775) internal successors, (813), 631 states have internal predecessors, (813), 237 states have call successors, (237), 45 states have call predecessors, (237), 44 states have return successors, (231), 222 states have call predecessors, (231), 231 states have call successors, (231) Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:17:12,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:14,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:16,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:18,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:17:18,366 INFO L93 Difference]: Finished difference Result 1831 states and 2724 transitions. [2021-12-18 08:17:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 08:17:18,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 206 [2021-12-18 08:17:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:17:18,389 INFO L225 Difference]: With dead ends: 1831 [2021-12-18 08:17:18,389 INFO L226 Difference]: Without dead ends: 941 [2021-12-18 08:17:18,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-18 08:17:18,402 INFO L933 BasicCegarLoop]: 1126 mSDtfsCounter, 786 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 971 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 971 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-12-18 08:17:18,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 2107 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [971 Valid, 702 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2021-12-18 08:17:18,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2021-12-18 08:17:18,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 857. [2021-12-18 08:17:18,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 582 states have (on average 1.3556701030927836) internal successors, (789), 612 states have internal predecessors, (789), 231 states have call successors, (231), 44 states have call predecessors, (231), 43 states have return successors, (230), 221 states have call predecessors, (230), 230 states have call successors, (230) [2021-12-18 08:17:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1250 transitions. [2021-12-18 08:17:18,557 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1250 transitions. Word has length 206 [2021-12-18 08:17:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:17:18,557 INFO L470 AbstractCegarLoop]: Abstraction has 857 states and 1250 transitions. [2021-12-18 08:17:18,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:17:18,558 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1250 transitions. [2021-12-18 08:17:18,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-18 08:17:18,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:17:18,568 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-12-18 08:17:18,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 08:17:18,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:17:18,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:17:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1110743290, now seen corresponding path program 1 times [2021-12-18 08:17:18,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:17:18,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437072720] [2021-12-18 08:17:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:17:18,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:17:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:17:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:17:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:17:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:17:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:17:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 08:17:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 08:17:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 08:17:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 08:17:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 08:17:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 08:17:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 08:17:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 08:17:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 08:17:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 08:17:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-18 08:17:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 08:17:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-18 08:17:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-18 08:17:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-18 08:17:19,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:17:19,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437072720] [2021-12-18 08:17:19,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437072720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:17:19,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:17:19,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 08:17:19,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608848970] [2021-12-18 08:17:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:17:19,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:17:19,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:17:19,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:17:19,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:17:19,647 INFO L87 Difference]: Start difference. First operand 857 states and 1250 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:17:21,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:23,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:25,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:28,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:32,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:17:36,549 INFO L93 Difference]: Finished difference Result 4544 states and 6717 transitions. [2021-12-18 08:17:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-18 08:17:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 200 [2021-12-18 08:17:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:17:36,581 INFO L225 Difference]: With dead ends: 4544 [2021-12-18 08:17:36,582 INFO L226 Difference]: Without dead ends: 3704 [2021-12-18 08:17:36,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2021-12-18 08:17:36,589 INFO L933 BasicCegarLoop]: 1470 mSDtfsCounter, 5477 mSDsluCounter, 3428 mSDsCounter, 0 mSdLazyCounter, 4294 mSolverCounterSat, 4104 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5929 SdHoareTripleChecker+Valid, 4898 SdHoareTripleChecker+Invalid, 8402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4104 IncrementalHoareTripleChecker+Valid, 4294 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-12-18 08:17:36,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5929 Valid, 4898 Invalid, 8402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4104 Valid, 4294 Invalid, 4 Unknown, 0 Unchecked, 16.3s Time] [2021-12-18 08:17:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2021-12-18 08:17:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 3364. [2021-12-18 08:17:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 2287 states have (on average 1.3563620463489288) internal successors, (3102), 2405 states have internal predecessors, (3102), 903 states have call successors, (903), 173 states have call predecessors, (903), 173 states have return successors, (910), 869 states have call predecessors, (910), 902 states have call successors, (910) [2021-12-18 08:17:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 4915 transitions. [2021-12-18 08:17:36,797 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 4915 transitions. Word has length 200 [2021-12-18 08:17:36,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:17:36,799 INFO L470 AbstractCegarLoop]: Abstraction has 3364 states and 4915 transitions. [2021-12-18 08:17:36,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:17:36,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 4915 transitions. [2021-12-18 08:17:36,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-12-18 08:17:36,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:17:36,805 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-12-18 08:17:36,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 08:17:36,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:17:36,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:17:36,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1805737481, now seen corresponding path program 1 times [2021-12-18 08:17:36,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:17:36,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762362890] [2021-12-18 08:17:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:17:36,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:17:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:17:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:17:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:17:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:17:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:17:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 08:17:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 08:17:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 08:17:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:17:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 08:17:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 08:17:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 08:17:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 08:17:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 08:17:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 08:17:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 08:17:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-18 08:17:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 08:17:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 08:17:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-18 08:17:37,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:17:37,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762362890] [2021-12-18 08:17:37,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762362890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:17:37,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:17:37,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 08:17:37,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417244234] [2021-12-18 08:17:37,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:17:37,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:17:37,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:17:37,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:17:37,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:17:37,979 INFO L87 Difference]: Start difference. First operand 3364 states and 4915 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:17:40,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:42,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:44,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:46,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:17:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:17:54,126 INFO L93 Difference]: Finished difference Result 18042 states and 26677 transitions. [2021-12-18 08:17:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-18 08:17:54,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 199 [2021-12-18 08:17:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:17:54,256 INFO L225 Difference]: With dead ends: 18042 [2021-12-18 08:17:54,257 INFO L226 Difference]: Without dead ends: 14695 [2021-12-18 08:17:54,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2021-12-18 08:17:54,281 INFO L933 BasicCegarLoop]: 1470 mSDtfsCounter, 5805 mSDsluCounter, 3361 mSDsCounter, 0 mSdLazyCounter, 4803 mSolverCounterSat, 4096 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6257 SdHoareTripleChecker+Valid, 4831 SdHoareTripleChecker+Invalid, 8903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4096 IncrementalHoareTripleChecker+Valid, 4803 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-12-18 08:17:54,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6257 Valid, 4831 Invalid, 8903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4096 Valid, 4803 Invalid, 4 Unknown, 0 Unchecked, 15.4s Time] [2021-12-18 08:17:54,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14695 states. [2021-12-18 08:17:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14695 to 13368. [2021-12-18 08:17:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13368 states, 9094 states have (on average 1.35385968770618) internal successors, (12312), 9553 states have internal predecessors, (12312), 3582 states have call successors, (3582), 689 states have call predecessors, (3582), 691 states have return successors, (3623), 3461 states have call predecessors, (3623), 3581 states have call successors, (3623) [2021-12-18 08:17:55,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13368 states to 13368 states and 19517 transitions. [2021-12-18 08:17:55,084 INFO L78 Accepts]: Start accepts. Automaton has 13368 states and 19517 transitions. Word has length 199 [2021-12-18 08:17:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:17:55,085 INFO L470 AbstractCegarLoop]: Abstraction has 13368 states and 19517 transitions. [2021-12-18 08:17:55,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:17:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 13368 states and 19517 transitions. [2021-12-18 08:17:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-18 08:17:55,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:17:55,092 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-12-18 08:17:55,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 08:17:55,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:17:55,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:17:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1821254840, now seen corresponding path program 1 times [2021-12-18 08:17:55,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:17:55,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825698326] [2021-12-18 08:17:55,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:17:55,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:17:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:17:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:17:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:17:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:17:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:17:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:55,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:17:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:17:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 08:17:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 08:17:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 08:17:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 08:17:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 08:17:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 08:17:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 08:17:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-18 08:17:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 08:17:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 08:17:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 08:17:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-18 08:17:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 08:17:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-18 08:17:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:17:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-18 08:17:56,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:17:56,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825698326] [2021-12-18 08:17:56,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825698326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:17:56,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:17:56,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 08:17:56,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408038516] [2021-12-18 08:17:56,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:17:56,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:17:56,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:17:56,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:17:56,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:17:56,119 INFO L87 Difference]: Start difference. First operand 13368 states and 19517 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:17:58,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:00,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:02,159 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:04,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:08,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:12,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:15,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:18:15,765 INFO L93 Difference]: Finished difference Result 71836 states and 106067 transitions. [2021-12-18 08:18:15,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-18 08:18:15,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 203 [2021-12-18 08:18:15,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:18:16,123 INFO L225 Difference]: With dead ends: 71836 [2021-12-18 08:18:16,123 INFO L226 Difference]: Without dead ends: 58485 [2021-12-18 08:18:16,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2021-12-18 08:18:16,212 INFO L933 BasicCegarLoop]: 1473 mSDtfsCounter, 4696 mSDsluCounter, 3898 mSDsCounter, 0 mSdLazyCounter, 5036 mSolverCounterSat, 3840 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5148 SdHoareTripleChecker+Valid, 5371 SdHoareTripleChecker+Invalid, 8882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3840 IncrementalHoareTripleChecker+Valid, 5036 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-12-18 08:18:16,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5148 Valid, 5371 Invalid, 8882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3840 Valid, 5036 Invalid, 6 Unknown, 0 Unchecked, 18.1s Time] [2021-12-18 08:18:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58485 states. [2021-12-18 08:18:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58485 to 53162. [2021-12-18 08:18:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53162 states, 36214 states have (on average 1.351134920196609) internal successors, (48930), 37939 states have internal predecessors, (48930), 14230 states have call successors, (14230), 2737 states have call predecessors, (14230), 2717 states have return successors, (14327), 13745 states have call predecessors, (14327), 14229 states have call successors, (14327) [2021-12-18 08:18:19,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53162 states to 53162 states and 77487 transitions. [2021-12-18 08:18:19,189 INFO L78 Accepts]: Start accepts. Automaton has 53162 states and 77487 transitions. Word has length 203 [2021-12-18 08:18:19,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:18:19,190 INFO L470 AbstractCegarLoop]: Abstraction has 53162 states and 77487 transitions. [2021-12-18 08:18:19,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:18:19,191 INFO L276 IsEmpty]: Start isEmpty. Operand 53162 states and 77487 transitions. [2021-12-18 08:18:19,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-18 08:18:19,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:18:19,197 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2021-12-18 08:18:19,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 08:18:19,197 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:18:19,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:18:19,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1957206687, now seen corresponding path program 1 times [2021-12-18 08:18:19,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:18:19,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366034910] [2021-12-18 08:18:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:18:19,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:18:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:18:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:18:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:18:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:18:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:18:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:18:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 08:18:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 08:18:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 08:18:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 08:18:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 08:18:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 08:18:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 08:18:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 08:18:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 08:18:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 08:18:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 08:18:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 08:18:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 08:18:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-18 08:18:20,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:18:20,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366034910] [2021-12-18 08:18:20,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366034910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:18:20,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:18:20,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 08:18:20,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763586628] [2021-12-18 08:18:20,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:18:20,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 08:18:20,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:18:20,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 08:18:20,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 08:18:20,220 INFO L87 Difference]: Start difference. First operand 53162 states and 77487 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:18:22,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:24,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:26,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:18:37,908 INFO L93 Difference]: Finished difference Result 265290 states and 389005 transitions. [2021-12-18 08:18:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-18 08:18:37,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 201 [2021-12-18 08:18:37,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:18:39,648 INFO L225 Difference]: With dead ends: 265290 [2021-12-18 08:18:39,648 INFO L226 Difference]: Without dead ends: 212145 [2021-12-18 08:18:39,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2021-12-18 08:18:39,871 INFO L933 BasicCegarLoop]: 1464 mSDtfsCounter, 5485 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 4290 mSolverCounterSat, 4109 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5937 SdHoareTripleChecker+Valid, 4883 SdHoareTripleChecker+Invalid, 8402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4109 IncrementalHoareTripleChecker+Valid, 4290 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-12-18 08:18:39,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5937 Valid, 4883 Invalid, 8402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4109 Valid, 4290 Invalid, 3 Unknown, 0 Unchecked, 12.5s Time] [2021-12-18 08:18:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212145 states. [2021-12-18 08:18:47,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212145 to 195348. [2021-12-18 08:18:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195348 states, 133373 states have (on average 1.3458271164328612) internal successors, (179497), 138851 states have internal predecessors, (179497), 51688 states have call successors, (51688), 10378 states have call predecessors, (51688), 10286 states have return successors, (52097), 50101 states have call predecessors, (52097), 51687 states have call successors, (52097) [2021-12-18 08:18:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195348 states to 195348 states and 283282 transitions. [2021-12-18 08:18:49,606 INFO L78 Accepts]: Start accepts. Automaton has 195348 states and 283282 transitions. Word has length 201 [2021-12-18 08:18:49,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 08:18:49,607 INFO L470 AbstractCegarLoop]: Abstraction has 195348 states and 283282 transitions. [2021-12-18 08:18:49,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 08:18:49,608 INFO L276 IsEmpty]: Start isEmpty. Operand 195348 states and 283282 transitions. [2021-12-18 08:18:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-12-18 08:18:49,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 08:18:49,739 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 08:18:49,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 08:18:49,740 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 08:18:49,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 08:18:49,740 INFO L85 PathProgramCache]: Analyzing trace with hash 398450710, now seen corresponding path program 1 times [2021-12-18 08:18:49,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 08:18:49,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451046678] [2021-12-18 08:18:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 08:18:49,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 08:18:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:18:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 08:18:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:18:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 08:18:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 08:18:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 08:18:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-18 08:18:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 08:18:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 08:18:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-18 08:18:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 08:18:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 08:18:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 08:18:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 08:18:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 08:18:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 08:18:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 08:18:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 08:18:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 08:18:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 08:18:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 08:18:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-18 08:18:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 08:18:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 08:18:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 08:18:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 08:18:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 08:18:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 08:18:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 08:18:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-18 08:18:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 08:18:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 08:18:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-18 08:18:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 08:18:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-18 08:18:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 08:18:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2021-12-18 08:18:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-18 08:18:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-18 08:18:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-18 08:18:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-18 08:18:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-12-18 08:18:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-18 08:18:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-12-18 08:18:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 08:18:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2021-12-18 08:18:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2021-12-18 08:18:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-12-18 08:18:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 08:18:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2021-12-18 08:18:50,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 08:18:50,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451046678] [2021-12-18 08:18:50,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451046678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 08:18:50,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 08:18:50,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 08:18:50,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506270605] [2021-12-18 08:18:50,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 08:18:50,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 08:18:50,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 08:18:50,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 08:18:50,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-18 08:18:50,832 INFO L87 Difference]: Start difference. First operand 195348 states and 283282 transitions. Second operand has 9 states, 9 states have (on average 17.0) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (56), 7 states have call predecessors, (56), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-12-18 08:18:52,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:54,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:56,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:18:58,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:19:00,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:19:03,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 08:19:17,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 08:19:17,050 INFO L93 Difference]: Finished difference Result 552655 states and 807312 transitions. [2021-12-18 08:19:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 08:19:17,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (56), 7 states have call predecessors, (56), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 376 [2021-12-18 08:19:17,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 08:19:19,161 INFO L225 Difference]: With dead ends: 552655 [2021-12-18 08:19:19,161 INFO L226 Difference]: Without dead ends: 357324 [2021-12-18 08:19:19,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-12-18 08:19:19,798 INFO L933 BasicCegarLoop]: 1412 mSDtfsCounter, 2090 mSDsluCounter, 3584 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 2211 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 4996 SdHoareTripleChecker+Invalid, 4937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2211 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-12-18 08:19:19,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2208 Valid, 4996 Invalid, 4937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2211 Valid, 2721 Invalid, 5 Unknown, 0 Unchecked, 15.6s Time] [2021-12-18 08:19:20,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357324 states.