./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--usb--serial--mos7840.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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--usb--serial--mos7840.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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:00:20,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:00:20,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:00:20,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:00:20,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:00:20,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:00:20,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:00:20,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:00:20,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:00:20,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:00:20,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:00:20,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:00:20,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:00:20,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:00:20,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:00:20,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:00:20,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:00:20,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:00:20,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:00:20,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:00:20,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:00:20,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:00:20,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:00:20,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:00:20,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:00:20,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:00:20,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:00:20,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:00:20,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:00:20,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:00:20,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:00:20,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:00:20,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:00:20,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:00:20,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:00:20,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:00:20,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:00:20,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:00:20,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:00:20,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:00:20,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:00:20,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:00:20,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:00:20,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:00:20,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:00:20,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:00:20,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:00:20,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:00:20,155 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:00:20,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:00:20,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:00:20,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:00:20,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:00:20,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:00:20,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:00:20,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:00:20,157 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:00:20,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:00:20,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:00:20,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:00:20,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:00:20,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:00:20,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:00:20,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:00:20,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:00:20,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:00:20,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:00:20,160 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:00:20,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:00:20,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:00:20,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:00:20,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2021-11-06 18:00:20,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:00:20,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:00:20,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:00:20,453 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:00:20,454 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:00:20,455 INFO L432 ainManager$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--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-11-06 18:00:20,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93fe6145e/89258e039b664859892d58466923c513/FLAG41edcae75 [2021-11-06 18:00:21,187 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:00:21,187 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--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-11-06 18:00:21,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93fe6145e/89258e039b664859892d58466923c513/FLAG41edcae75 [2021-11-06 18:00:21,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93fe6145e/89258e039b664859892d58466923c513 [2021-11-06 18:00:21,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:00:21,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:00:21,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:00:21,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:00:21,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:00:21,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:00:21" (1/1) ... [2021-11-06 18:00:21,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fef79ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:21, skipping insertion in model container [2021-11-06 18:00:21,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:00:21" (1/1) ... [2021-11-06 18:00:21,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:00:21,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:00:23,114 WARN L228 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--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-11-06 18:00:23,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:00:23,226 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:00:23,570 WARN L228 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--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-11-06 18:00:23,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:00:23,658 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:00:23,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23 WrapperNode [2021-11-06 18:00:23,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:00:23,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:00:23,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:00:23,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:00:23,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23" (1/1) ... [2021-11-06 18:00:23,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23" (1/1) ... [2021-11-06 18:00:25,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:00:25,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:00:25,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:00:25,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:00:25,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23" (1/1) ... [2021-11-06 18:00:25,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23" (1/1) ... [2021-11-06 18:00:25,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23" (1/1) ... [2021-11-06 18:00:25,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23" (1/1) ... [2021-11-06 18:00:26,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23" (1/1) ... [2021-11-06 18:00:26,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23" (1/1) ... [2021-11-06 18:00:26,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23" (1/1) ... [2021-11-06 18:00:26,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:00:26,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:00:26,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:00:26,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:00:26,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23" (1/1) ... [2021-11-06 18:00:26,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:00:26,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:00:26,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 18:00:26,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 18:00:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:00:27,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:00:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:00:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:00:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:00:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:00:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:00:27,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:00:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:00:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:00:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:00:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:00:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:00:27,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:00:27,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:03:01,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:03:01,948 INFO L299 CfgBuilder]: Removed 5309 assume(true) statements. [2021-11-06 18:03:01,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:03:01 BoogieIcfgContainer [2021-11-06 18:03:01,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:03:01,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:03:01,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:03:01,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:03:01,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:00:21" (1/3) ... [2021-11-06 18:03:01,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ed358e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:03:01, skipping insertion in model container [2021-11-06 18:03:01,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:00:23" (2/3) ... [2021-11-06 18:03:01,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ed358e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:03:01, skipping insertion in model container [2021-11-06 18:03:01,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:03:01" (3/3) ... [2021-11-06 18:03:01,971 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-11-06 18:03:01,977 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:03:01,978 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 102 error locations. [2021-11-06 18:03:02,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:03:02,052 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 18:03:02,053 INFO L340 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2021-11-06 18:03:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 6104 states, 6001 states have (on average 1.436760539910015) internal successors, (8622), 6103 states have internal predecessors, (8622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 18:03:02,169 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:02,170 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:02,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-06 18:03:02,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:02,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1993312839, now seen corresponding path program 1 times [2021-11-06 18:03:02,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:03:02,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596442356] [2021-11-06 18:03:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:02,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:03:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:03:03,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:03:03,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596442356] [2021-11-06 18:03:03,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596442356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:03,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:03,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:03:03,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998871016] [2021-11-06 18:03:03,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 18:03:03,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:03:03,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 18:03:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 18:03:03,300 INFO L87 Difference]: Start difference. First operand has 6104 states, 6001 states have (on average 1.436760539910015) internal successors, (8622), 6103 states have internal predecessors, (8622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:03,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:03,495 INFO L93 Difference]: Finished difference Result 12204 states and 17239 transitions. [2021-11-06 18:03:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 18:03:03,497 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 18:03:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:03,542 INFO L225 Difference]: With dead ends: 12204 [2021-11-06 18:03:03,543 INFO L226 Difference]: Without dead ends: 6094 [2021-11-06 18:03:03,559 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 18:03:03,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6094 states. [2021-11-06 18:03:03,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6094 to 6094. [2021-11-06 18:03:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6094 states, 5992 states have (on average 1.4078771695594126) internal successors, (8436), 6093 states have internal predecessors, (8436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 8436 transitions. [2021-11-06 18:03:03,794 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 8436 transitions. Word has length 51 [2021-11-06 18:03:03,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:03,798 INFO L470 AbstractCegarLoop]: Abstraction has 6094 states and 8436 transitions. [2021-11-06 18:03:03,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 8436 transitions. [2021-11-06 18:03:03,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 18:03:03,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:03,804 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:03,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:03:03,804 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-06 18:03:03,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:03,805 INFO L85 PathProgramCache]: Analyzing trace with hash 116912959, now seen corresponding path program 1 times [2021-11-06 18:03:03,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:03:03,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47462614] [2021-11-06 18:03:03,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:03,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:03:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:03:04,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:03:04,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47462614] [2021-11-06 18:03:04,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47462614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:04,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:04,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 18:03:04,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477866831] [2021-11-06 18:03:04,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 18:03:04,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:03:04,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 18:03:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:03:04,905 INFO L87 Difference]: Start difference. First operand 6094 states and 8436 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:11,881 INFO L93 Difference]: Finished difference Result 30083 states and 41585 transitions. [2021-11-06 18:03:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:03:11,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-06 18:03:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:11,984 INFO L225 Difference]: With dead ends: 30083 [2021-11-06 18:03:11,984 INFO L226 Difference]: Without dead ends: 24031 [2021-11-06 18:03:12,009 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:03:12,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24031 states. [2021-11-06 18:03:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24031 to 23401. [2021-11-06 18:03:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23401 states, 23299 states have (on average 1.407914502768359) internal successors, (32803), 23400 states have internal predecessors, (32803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23401 states to 23401 states and 32803 transitions. [2021-11-06 18:03:12,669 INFO L78 Accepts]: Start accepts. Automaton has 23401 states and 32803 transitions. Word has length 51 [2021-11-06 18:03:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:12,670 INFO L470 AbstractCegarLoop]: Abstraction has 23401 states and 32803 transitions. [2021-11-06 18:03:12,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 23401 states and 32803 transitions. [2021-11-06 18:03:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 18:03:12,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:12,672 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:12,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:03:12,673 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-06 18:03:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:12,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2140903843, now seen corresponding path program 1 times [2021-11-06 18:03:12,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:03:12,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772776487] [2021-11-06 18:03:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:12,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:03:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:03:13,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:03:13,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772776487] [2021-11-06 18:03:13,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772776487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:13,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:13,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:03:13,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985472858] [2021-11-06 18:03:13,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:03:13,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:03:13,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:03:13,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:03:13,378 INFO L87 Difference]: Start difference. First operand 23401 states and 32803 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:15,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:15,826 INFO L93 Difference]: Finished difference Result 47242 states and 66288 transitions. [2021-11-06 18:03:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:03:15,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-06 18:03:15,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:15,899 INFO L225 Difference]: With dead ends: 47242 [2021-11-06 18:03:15,900 INFO L226 Difference]: Without dead ends: 23883 [2021-11-06 18:03:15,944 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:03:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23883 states. [2021-11-06 18:03:16,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23883 to 23875. [2021-11-06 18:03:16,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23875 states, 23773 states have (on average 1.4102553316787954) internal successors, (33526), 23874 states have internal predecessors, (33526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23875 states to 23875 states and 33526 transitions. [2021-11-06 18:03:16,491 INFO L78 Accepts]: Start accepts. Automaton has 23875 states and 33526 transitions. Word has length 52 [2021-11-06 18:03:16,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:16,492 INFO L470 AbstractCegarLoop]: Abstraction has 23875 states and 33526 transitions. [2021-11-06 18:03:16,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 23875 states and 33526 transitions. [2021-11-06 18:03:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 18:03:16,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:16,499 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:16,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:03:16,499 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-06 18:03:16,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:16,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2052243934, now seen corresponding path program 1 times [2021-11-06 18:03:16,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:03:16,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105245299] [2021-11-06 18:03:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:16,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:03:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:03:17,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:03:17,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105245299] [2021-11-06 18:03:17,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105245299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:17,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:17,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 18:03:17,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226584869] [2021-11-06 18:03:17,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 18:03:17,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:03:17,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 18:03:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:03:17,259 INFO L87 Difference]: Start difference. First operand 23875 states and 33526 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:24,476 INFO L93 Difference]: Finished difference Result 118483 states and 166241 transitions. [2021-11-06 18:03:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:03:24,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-06 18:03:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:24,783 INFO L225 Difference]: With dead ends: 118483 [2021-11-06 18:03:24,784 INFO L226 Difference]: Without dead ends: 94650 [2021-11-06 18:03:24,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:03:24,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94650 states. [2021-11-06 18:03:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94650 to 93992. [2021-11-06 18:03:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93992 states, 93890 states have (on average 1.4081478325700287) internal successors, (132211), 93991 states have internal predecessors, (132211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93992 states to 93992 states and 132211 transitions. [2021-11-06 18:03:27,243 INFO L78 Accepts]: Start accepts. Automaton has 93992 states and 132211 transitions. Word has length 52 [2021-11-06 18:03:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:27,244 INFO L470 AbstractCegarLoop]: Abstraction has 93992 states and 132211 transitions. [2021-11-06 18:03:27,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:27,244 INFO L276 IsEmpty]: Start isEmpty. Operand 93992 states and 132211 transitions. [2021-11-06 18:03:27,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 18:03:27,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:27,245 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:27,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:03:27,245 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-06 18:03:27,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:27,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1917962124, now seen corresponding path program 1 times [2021-11-06 18:03:27,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:03:27,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59750267] [2021-11-06 18:03:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:27,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:03:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:03:28,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:03:28,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59750267] [2021-11-06 18:03:28,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59750267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:28,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:28,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 18:03:28,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771838419] [2021-11-06 18:03:28,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 18:03:28,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:03:28,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 18:03:28,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:03:28,082 INFO L87 Difference]: Start difference. First operand 93992 states and 132211 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:38,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:03:38,790 INFO L93 Difference]: Finished difference Result 467606 states and 657492 transitions. [2021-11-06 18:03:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 18:03:38,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-06 18:03:38,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:03:39,873 INFO L225 Difference]: With dead ends: 467606 [2021-11-06 18:03:39,874 INFO L226 Difference]: Without dead ends: 373656 [2021-11-06 18:03:40,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:03:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373656 states. [2021-11-06 18:03:47,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373656 to 372950. [2021-11-06 18:03:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372950 states, 372848 states have (on average 1.4063559412951123) internal successors, (524357), 372949 states have internal predecessors, (524357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372950 states to 372950 states and 524357 transitions. [2021-11-06 18:03:48,705 INFO L78 Accepts]: Start accepts. Automaton has 372950 states and 524357 transitions. Word has length 53 [2021-11-06 18:03:48,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:03:48,705 INFO L470 AbstractCegarLoop]: Abstraction has 372950 states and 524357 transitions. [2021-11-06 18:03:48,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:03:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 372950 states and 524357 transitions. [2021-11-06 18:03:48,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 18:03:48,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:03:48,707 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:03:48,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:03:48,707 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-06 18:03:48,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:03:48,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2050193419, now seen corresponding path program 1 times [2021-11-06 18:03:48,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:03:48,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922810976] [2021-11-06 18:03:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:03:48,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:03:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:03:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:03:50,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:03:50,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922810976] [2021-11-06 18:03:50,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922810976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:03:50,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:03:50,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 18:03:50,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436648093] [2021-11-06 18:03:50,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 18:03:50,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:03:50,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 18:03:50,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 18:03:50,047 INFO L87 Difference]: Start difference. First operand 372950 states and 524357 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)