./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.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 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:38:59,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:38:59,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:38:59,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:38:59,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:38:59,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:38:59,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:38:59,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:38:59,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:38:59,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:38:59,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:38:59,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:38:59,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:38:59,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:38:59,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:38:59,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:38:59,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:38:59,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:38:59,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:38:59,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:38:59,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:38:59,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:38:59,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:38:59,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:38:59,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:38:59,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:38:59,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:38:59,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:38:59,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:38:59,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:38:59,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:38:59,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:38:59,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:38:59,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:38:59,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:38:59,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:38:59,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:38:59,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:38:59,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:38:59,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:38:59,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:38:59,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:38:59,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:38:59,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:38:59,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:38:59,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:38:59,143 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:38:59,143 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:38:59,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:38:59,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:38:59,144 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:38:59,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:38:59,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:38:59,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:38:59,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:38:59,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:38:59,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:38:59,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:38:59,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:38:59,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:38:59,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:38:59,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:38:59,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:38:59,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:38:59,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:38:59,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:38:59,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:38:59,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:38:59,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:38:59,150 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:38:59,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:38:59,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:38:59,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:38:59,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516f7415706b6c5853539632c826b0e29b08def0097a2be3ef08c779c9d5bd22 [2021-12-22 14:38:59,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:38:59,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:38:59,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:38:59,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:38:59,398 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:38:59,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-12-22 14:38:59,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be8be719/7f661011eb1c4cdca0ebaa8962fcb942/FLAG1815c54de [2021-12-22 14:39:00,130 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:39:00,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-12-22 14:39:00,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be8be719/7f661011eb1c4cdca0ebaa8962fcb942/FLAG1815c54de [2021-12-22 14:39:00,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be8be719/7f661011eb1c4cdca0ebaa8962fcb942 [2021-12-22 14:39:00,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:39:00,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:39:00,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:39:00,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:39:00,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:39:00,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:39:00" (1/1) ... [2021-12-22 14:39:00,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a883a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:00, skipping insertion in model container [2021-12-22 14:39:00,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:39:00" (1/1) ... [2021-12-22 14:39:00,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:39:00,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:39:00,963 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2021-12-22 14:39:01,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:39:01,399 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:39:01,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i[160816,160829] [2021-12-22 14:39:01,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:39:01,697 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:39:01,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01 WrapperNode [2021-12-22 14:39:01,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:39:01,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:39:01,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:39:01,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:39:01,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01" (1/1) ... [2021-12-22 14:39:01,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01" (1/1) ... [2021-12-22 14:39:01,849 INFO L137 Inliner]: procedures = 140, calls = 1066, calls flagged for inlining = 55, calls inlined = 52, statements flattened = 1906 [2021-12-22 14:39:01,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:39:01,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:39:01,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:39:01,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:39:01,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01" (1/1) ... [2021-12-22 14:39:01,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01" (1/1) ... [2021-12-22 14:39:01,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01" (1/1) ... [2021-12-22 14:39:01,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01" (1/1) ... [2021-12-22 14:39:01,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01" (1/1) ... [2021-12-22 14:39:01,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01" (1/1) ... [2021-12-22 14:39:01,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01" (1/1) ... [2021-12-22 14:39:02,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:39:02,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:39:02,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:39:02,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:39:02,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01" (1/1) ... [2021-12-22 14:39:02,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:39:02,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:39:02,052 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) [2021-12-22 14:39:02,078 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 [2021-12-22 14:39:02,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:39:02,093 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_threaded_irq [2021-12-22 14:39:02,094 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_threaded_irq [2021-12-22 14:39:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:39:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:39:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:39:02,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:39:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:39:02,094 INFO L130 BoogieDeclarations]: Found specification of procedure write_long_reg [2021-12-22 14:39:02,095 INFO L138 BoogieDeclarations]: Found implementation of procedure write_long_reg [2021-12-22 14:39:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2021-12-22 14:39:02,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2021-12-22 14:39:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:39:02,095 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:39:02,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-22 14:39:02,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-22 14:39:02,096 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2021-12-22 14:39:02,096 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2021-12-22 14:39:02,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:39:02,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:39:02,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-22 14:39:02,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-22 14:39:02,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:39:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:39:02,097 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:39:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:39:02,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:39:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:39:02,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:39:02,097 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_set_channel [2021-12-22 14:39:02,098 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_set_channel [2021-12-22 14:39:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2021-12-22 14:39:02,098 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2021-12-22 14:39:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:39:02,098 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:39:02,098 INFO L130 BoogieDeclarations]: Found specification of procedure write_short_reg [2021-12-22 14:39:02,098 INFO L138 BoogieDeclarations]: Found implementation of procedure write_short_reg [2021-12-22 14:39:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:39:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:39:02,099 INFO L130 BoogieDeclarations]: Found specification of procedure ieee802154_unregister_device [2021-12-22 14:39:02,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee802154_unregister_device [2021-12-22 14:39:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-22 14:39:02,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-22 14:39:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:39:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:39:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-22 14:39:02,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-22 14:39:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2021-12-22 14:39:02,101 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2021-12-22 14:39:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-12-22 14:39:02,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-12-22 14:39:02,101 INFO L130 BoogieDeclarations]: Found specification of procedure read_short_reg [2021-12-22 14:39:02,101 INFO L138 BoogieDeclarations]: Found implementation of procedure read_short_reg [2021-12-22 14:39:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_filter [2021-12-22 14:39:02,102 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_filter [2021-12-22 14:39:02,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:39:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-22 14:39:02,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-22 14:39:02,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:39:02,104 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-12-22 14:39:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-12-22 14:39:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:39:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-22 14:39:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-22 14:39:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2021-12-22 14:39:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2021-12-22 14:39:02,105 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_tx [2021-12-22 14:39:02,105 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_tx [2021-12-22 14:39:02,106 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_isr [2021-12-22 14:39:02,106 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_isr [2021-12-22 14:39:02,106 INFO L130 BoogieDeclarations]: Found specification of procedure mrf24j40_ed [2021-12-22 14:39:02,107 INFO L138 BoogieDeclarations]: Found implementation of procedure mrf24j40_ed [2021-12-22 14:39:02,107 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-22 14:39:02,107 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-22 14:39:02,107 INFO L130 BoogieDeclarations]: Found specification of procedure ieee802154_free_device [2021-12-22 14:39:02,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee802154_free_device [2021-12-22 14:39:02,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:39:02,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:39:02,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-22 14:39:02,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-22 14:39:02,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:39:02,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:39:02,538 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:39:02,540 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:39:11,726 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:39:20,675 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:39:20,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:39:20,688 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-22 14:39:20,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:39:20 BoogieIcfgContainer [2021-12-22 14:39:20,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:39:20,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:39:20,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:39:20,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:39:20,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:39:00" (1/3) ... [2021-12-22 14:39:20,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f973f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:39:20, skipping insertion in model container [2021-12-22 14:39:20,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:39:01" (2/3) ... [2021-12-22 14:39:20,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f973f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:39:20, skipping insertion in model container [2021-12-22 14:39:20,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:39:20" (3/3) ... [2021-12-22 14:39:20,697 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ieee802154--mrf24j40.ko-entry_point.cil.out.i [2021-12-22 14:39:20,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:39:20,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:39:20,741 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:39:20,746 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 [2021-12-22 14:39:20,747 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:39:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 621 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 453 states have internal predecessors, (601), 148 states have call successors, (148), 33 states have call predecessors, (148), 32 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2021-12-22 14:39:20,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-22 14:39:20,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:20,781 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:20,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:20,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:20,789 INFO L85 PathProgramCache]: Analyzing trace with hash -829070918, now seen corresponding path program 1 times [2021-12-22 14:39:20,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:20,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688653530] [2021-12-22 14:39:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:20,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:21,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:21,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-22 14:39:21,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:21,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688653530] [2021-12-22 14:39:21,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688653530] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:21,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:21,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:39:21,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149705916] [2021-12-22 14:39:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:21,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:39:21,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:21,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:39:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:39:21,361 INFO L87 Difference]: Start difference. First operand has 621 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 453 states have internal predecessors, (601), 148 states have call successors, (148), 33 states have call predecessors, (148), 32 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:39:23,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:25,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:27,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:30,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:32,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:35,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:37,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:40,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:42,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:42,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:42,721 INFO L93 Difference]: Finished difference Result 1873 states and 2867 transitions. [2021-12-22 14:39:42,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:39:42,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2021-12-22 14:39:42,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:42,755 INFO L225 Difference]: With dead ends: 1873 [2021-12-22 14:39:42,755 INFO L226 Difference]: Without dead ends: 1233 [2021-12-22 14:39:42,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:39:42,769 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 963 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 302 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:42,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 2268 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 417 Invalid, 9 Unknown, 0 Unchecked, 21.1s Time] [2021-12-22 14:39:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2021-12-22 14:39:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1146. [2021-12-22 14:39:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 827 states have (on average 1.336154776299879) internal successors, (1105), 835 states have internal predecessors, (1105), 259 states have call successors, (259), 60 states have call predecessors, (259), 59 states have return successors, (258), 258 states have call predecessors, (258), 258 states have call successors, (258) [2021-12-22 14:39:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1622 transitions. [2021-12-22 14:39:42,937 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1622 transitions. Word has length 37 [2021-12-22 14:39:42,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:42,938 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1622 transitions. [2021-12-22 14:39:42,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:39:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1622 transitions. [2021-12-22 14:39:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-22 14:39:42,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:42,947 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:39:42,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:39:42,948 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:42,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1782236089, now seen corresponding path program 1 times [2021-12-22 14:39:42,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:42,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513806788] [2021-12-22 14:39:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:42,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-22 14:39:43,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:39:43,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513806788] [2021-12-22 14:39:43,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513806788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:39:43,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:39:43,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:39:43,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577199072] [2021-12-22 14:39:43,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:39:43,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:39:43,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:39:43,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:39:43,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:39:43,218 INFO L87 Difference]: Start difference. First operand 1146 states and 1622 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:39:45,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:47,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:49,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:51,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:55,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:57,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:39:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:39:58,884 INFO L93 Difference]: Finished difference Result 3541 states and 5099 transitions. [2021-12-22 14:39:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:39:58,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-12-22 14:39:58,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:39:58,900 INFO L225 Difference]: With dead ends: 3541 [2021-12-22 14:39:58,900 INFO L226 Difference]: Without dead ends: 2398 [2021-12-22 14:39:58,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:39:58,907 INFO L933 BasicCegarLoop]: 1023 mSDtfsCounter, 947 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 288 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:39:58,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 4141 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 695 Invalid, 5 Unknown, 0 Unchecked, 15.4s Time] [2021-12-22 14:39:58,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2021-12-22 14:39:58,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2259. [2021-12-22 14:39:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 1636 states have (on average 1.3380195599022005) internal successors, (2189), 1658 states have internal predecessors, (2189), 499 states have call successors, (499), 116 states have call predecessors, (499), 123 states have return successors, (546), 500 states have call predecessors, (546), 498 states have call successors, (546) [2021-12-22 14:39:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3234 transitions. [2021-12-22 14:39:58,999 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3234 transitions. Word has length 39 [2021-12-22 14:39:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:39:58,999 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 3234 transitions. [2021-12-22 14:39:59,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 14:39:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3234 transitions. [2021-12-22 14:39:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-22 14:39:59,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:39:59,017 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-22 14:39:59,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:39:59,018 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:39:59,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:39:59,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2071322685, now seen corresponding path program 1 times [2021-12-22 14:39:59,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:39:59,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163329577] [2021-12-22 14:39:59,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:39:59,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:39:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:39:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:39:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:39:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:59,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 14:39:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:39:59,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-22 14:39:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:40:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:40:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 14:40:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:40:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:40:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:40:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:40:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:40:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 14:40:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 14:40:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:40:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-22 14:40:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 14:40:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:40:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-22 14:40:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:00,748 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-22 14:40:00,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:40:00,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163329577] [2021-12-22 14:40:00,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163329577] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:40:00,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534620273] [2021-12-22 14:40:00,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:40:00,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:40:00,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:40:00,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:40:00,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:40:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:40:01,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 3772 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 14:40:01,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:40:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-22 14:40:03,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:40:03,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534620273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:40:03,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:40:03,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2021-12-22 14:40:03,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531650710] [2021-12-22 14:40:03,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:40:03,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:40:03,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:40:03,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:40:03,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:40:03,479 INFO L87 Difference]: Start difference. First operand 2259 states and 3234 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21)