./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.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 ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 19:54:27,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 19:54:27,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 19:54:27,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 19:54:27,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 19:54:27,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 19:54:27,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 19:54:27,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 19:54:27,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 19:54:27,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 19:54:27,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 19:54:27,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 19:54:27,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 19:54:27,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 19:54:27,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 19:54:27,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 19:54:27,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 19:54:27,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 19:54:27,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 19:54:27,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 19:54:27,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 19:54:27,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 19:54:27,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 19:54:27,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 19:54:27,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 19:54:27,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 19:54:27,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 19:54:27,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 19:54:27,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 19:54:27,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 19:54:27,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 19:54:27,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 19:54:27,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 19:54:27,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 19:54:27,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 19:54:27,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 19:54:27,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 19:54:27,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 19:54:27,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 19:54:27,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 19:54:27,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 19:54:27,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 19:54:27,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 19:54:27,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 19:54:27,141 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 19:54:27,141 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 19:54:27,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 19:54:27,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 19:54:27,143 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 19:54:27,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 19:54:27,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 19:54:27,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 19:54:27,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 19:54:27,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 19:54:27,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 19:54:27,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 19:54:27,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 19:54:27,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 19:54:27,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 19:54:27,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 19:54:27,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 19:54:27,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 19:54:27,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 19:54:27,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 19:54:27,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 19:54:27,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 19:54:27,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 19:54:27,147 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 19:54:27,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 19:54:27,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 19:54:27,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 19:54:27,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2021-11-02 19:54:27,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 19:54:27,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 19:54:27,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 19:54:27,391 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 19:54:27,392 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 19:54:27,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 19:54:27,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa51b4b95/bc60e9a56d21431685095221eb1a69db/FLAG07e0306a7 [2021-11-02 19:54:28,099 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 19:54:28,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 19:54:28,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa51b4b95/bc60e9a56d21431685095221eb1a69db/FLAG07e0306a7 [2021-11-02 19:54:28,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa51b4b95/bc60e9a56d21431685095221eb1a69db [2021-11-02 19:54:28,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 19:54:28,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 19:54:28,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 19:54:28,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 19:54:28,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 19:54:28,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:54:28" (1/1) ... [2021-11-02 19:54:28,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3267bc52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:28, skipping insertion in model container [2021-11-02 19:54:28,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:54:28" (1/1) ... [2021-11-02 19:54:28,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 19:54:28,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 19:54:29,599 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-11-02 19:54:29,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 19:54:29,648 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 19:54:29,974 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-validator-v0.8/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i[218543,218556] [2021-11-02 19:54:29,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 19:54:30,050 INFO L208 MainTranslator]: Completed translation [2021-11-02 19:54:30,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30 WrapperNode [2021-11-02 19:54:30,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 19:54:30,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 19:54:30,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 19:54:30,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 19:54:30,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30" (1/1) ... [2021-11-02 19:54:30,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30" (1/1) ... [2021-11-02 19:54:31,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 19:54:31,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 19:54:31,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 19:54:31,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 19:54:31,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30" (1/1) ... [2021-11-02 19:54:31,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30" (1/1) ... [2021-11-02 19:54:31,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30" (1/1) ... [2021-11-02 19:54:31,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30" (1/1) ... [2021-11-02 19:54:32,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30" (1/1) ... [2021-11-02 19:54:32,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30" (1/1) ... [2021-11-02 19:54:32,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30" (1/1) ... [2021-11-02 19:54:32,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 19:54:32,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 19:54:32,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 19:54:32,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 19:54:32,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30" (1/1) ... [2021-11-02 19:54:32,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 19:54:32,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:54:32,684 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) [2021-11-02 19:54:32,711 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 [2021-11-02 19:54:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 19:54:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-02 19:54:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 19:54:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 19:54:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 19:54:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 19:54:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 19:54:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 19:54:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 19:54:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 19:54:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 19:54:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 19:54:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 19:54:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 19:54:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 19:54:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 19:54:32,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 19:56:54,415 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 19:56:54,415 INFO L299 CfgBuilder]: Removed 5913 assume(true) statements. [2021-11-02 19:56:54,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:54 BoogieIcfgContainer [2021-11-02 19:56:54,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 19:56:54,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 19:56:54,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 19:56:54,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 19:56:54,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:54:28" (1/3) ... [2021-11-02 19:56:54,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d009006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:54, skipping insertion in model container [2021-11-02 19:56:54,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:54:30" (2/3) ... [2021-11-02 19:56:54,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d009006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:54, skipping insertion in model container [2021-11-02 19:56:54,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:54" (3/3) ... [2021-11-02 19:56:54,434 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-02 19:56:54,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 19:56:54,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-02 19:56:54,508 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 19:56:54,513 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 [2021-11-02 19:56:54,514 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-02 19:56:54,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 6793 states, 6788 states have (on average 1.459634649381261) internal successors, (9908), 6792 states have internal predecessors, (9908), 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) [2021-11-02 19:56:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 19:56:54,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:56:54,633 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:56:54,633 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 19:56:54,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:56:54,639 INFO L85 PathProgramCache]: Analyzing trace with hash -597361012, now seen corresponding path program 1 times [2021-11-02 19:56:54,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:56:54,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907693566] [2021-11-02 19:56:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:56:54,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:56:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:56:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:56:55,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:56:55,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907693566] [2021-11-02 19:56:55,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907693566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:56:55,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:56:55,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 19:56:55,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611029296] [2021-11-02 19:56:55,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 19:56:55,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:56:55,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 19:56:55,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 19:56:55,479 INFO L87 Difference]: Start difference. First operand has 6793 states, 6788 states have (on average 1.459634649381261) internal successors, (9908), 6792 states have internal predecessors, (9908), 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 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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) [2021-11-02 19:56:57,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:57:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:57:32,462 INFO L93 Difference]: Finished difference Result 13582 states and 19811 transitions. [2021-11-02 19:57:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 19:57:32,467 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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 67 [2021-11-02 19:57:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:57:32,512 INFO L225 Difference]: With dead ends: 13582 [2021-11-02 19:57:32,513 INFO L226 Difference]: Without dead ends: 6781 [2021-11-02 19:57:32,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 19:57:32,533 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9694 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33559.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.20ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9694 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36175.91ms IncrementalHoareTripleChecker+Time [2021-11-02 19:57:32,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 9695 Unknown, 0 Unchecked, 48.20ms Time], IncrementalHoareTripleChecker [0 Valid, 9694 Invalid, 1 Unknown, 0 Unchecked, 36175.91ms Time] [2021-11-02 19:57:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2021-11-02 19:57:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 6781. [2021-11-02 19:57:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6781 states, 6777 states have (on average 1.428655747380847) internal successors, (9682), 6780 states have internal predecessors, (9682), 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) [2021-11-02 19:57:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 9682 transitions. [2021-11-02 19:57:32,770 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 9682 transitions. Word has length 67 [2021-11-02 19:57:32,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:57:32,771 INFO L470 AbstractCegarLoop]: Abstraction has 6781 states and 9682 transitions. [2021-11-02 19:57:32,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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) [2021-11-02 19:57:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 9682 transitions. [2021-11-02 19:57:32,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 19:57:32,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:57:32,780 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:57:32,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 19:57:32,781 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 19:57:32,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:57:32,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1226720446, now seen corresponding path program 1 times [2021-11-02 19:57:32,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:57:32,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756590302] [2021-11-02 19:57:32,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:57:32,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:57:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:57:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:57:33,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:57:33,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756590302] [2021-11-02 19:57:33,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756590302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:57:33,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:57:33,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:57:33,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103222401] [2021-11-02 19:57:33,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:57:33,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:57:33,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:57:33,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:57:33,265 INFO L87 Difference]: Start difference. First operand 6781 states and 9682 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-02 19:57:35,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:59:27,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:59:27,005 INFO L93 Difference]: Finished difference Result 13548 states and 19359 transitions. [2021-11-02 19:59:27,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:59:27,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-02 19:59:27,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:59:27,032 INFO L225 Difference]: With dead ends: 13548 [2021-11-02 19:59:27,032 INFO L226 Difference]: Without dead ends: 6791 [2021-11-02 19:59:27,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:59:27,045 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 9609 mSDsCounter, 0 mSdLazyCounter, 19352 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107594.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 134.90ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 19352 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112700.67ms IncrementalHoareTripleChecker+Time [2021-11-02 19:59:27,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19371 Unknown, 0 Unchecked, 134.90ms Time], IncrementalHoareTripleChecker [18 Valid, 19352 Invalid, 1 Unknown, 0 Unchecked, 112700.67ms Time] [2021-11-02 19:59:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6791 states. [2021-11-02 19:59:27,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6791 to 6791. [2021-11-02 19:59:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6791 states, 6787 states have (on average 1.4280241638426403) internal successors, (9692), 6790 states have internal predecessors, (9692), 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) [2021-11-02 19:59:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6791 states to 6791 states and 9692 transitions. [2021-11-02 19:59:27,189 INFO L78 Accepts]: Start accepts. Automaton has 6791 states and 9692 transitions. Word has length 67 [2021-11-02 19:59:27,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:59:27,190 INFO L470 AbstractCegarLoop]: Abstraction has 6791 states and 9692 transitions. [2021-11-02 19:59:27,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-02 19:59:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand 6791 states and 9692 transitions. [2021-11-02 19:59:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 19:59:27,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:59:27,191 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 19:59:27,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 19:59:27,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 19:59:27,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:59:27,192 INFO L85 PathProgramCache]: Analyzing trace with hash 565659874, now seen corresponding path program 1 times [2021-11-02 19:59:27,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:59:27,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194780373] [2021-11-02 19:59:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:59:27,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:59:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:59:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 19:59:27,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:59:27,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194780373] [2021-11-02 19:59:27,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194780373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:59:27,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:59:27,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:59:27,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883738881] [2021-11-02 19:59:27,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:59:27,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:59:27,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:59:27,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:59:27,605 INFO L87 Difference]: Start difference. First operand 6791 states and 9692 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-11-02 19:59:29,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:01:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:01:35,688 INFO L93 Difference]: Finished difference Result 13552 states and 19353 transitions. [2021-11-02 20:01:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:01:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2021-11-02 20:01:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:01:35,715 INFO L225 Difference]: With dead ends: 13552 [2021-11-02 20:01:35,715 INFO L226 Difference]: Without dead ends: 6793 [2021-11-02 20:01:35,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:01:35,729 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 9609 mSDsCounter, 0 mSdLazyCounter, 19360 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121962.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 114.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19360 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127167.23ms IncrementalHoareTripleChecker+Time [2021-11-02 20:01:35,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19363 Unknown, 0 Unchecked, 114.70ms Time], IncrementalHoareTripleChecker [2 Valid, 19360 Invalid, 1 Unknown, 0 Unchecked, 127167.23ms Time] [2021-11-02 20:01:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6793 states. [2021-11-02 20:01:35,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6793 to 6793. [2021-11-02 20:01:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6793 states, 6789 states have (on average 1.4278980704080129) internal successors, (9694), 6792 states have internal predecessors, (9694), 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) [2021-11-02 20:01:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6793 states to 6793 states and 9694 transitions. [2021-11-02 20:01:35,885 INFO L78 Accepts]: Start accepts. Automaton has 6793 states and 9694 transitions. Word has length 77 [2021-11-02 20:01:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:01:35,885 INFO L470 AbstractCegarLoop]: Abstraction has 6793 states and 9694 transitions. [2021-11-02 20:01:35,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-11-02 20:01:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 6793 states and 9694 transitions. [2021-11-02 20:01:35,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 20:01:35,887 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:01:35,887 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:01:35,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 20:01:35,887 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 20:01:35,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:01:35,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1121493386, now seen corresponding path program 1 times [2021-11-02 20:01:35,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:01:35,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483512497] [2021-11-02 20:01:35,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:01:35,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:01:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:01:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:01:36,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:01:36,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483512497] [2021-11-02 20:01:36,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483512497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:01:36,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:01:36,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 20:01:36,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387628914] [2021-11-02 20:01:36,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:01:36,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:01:36,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:01:36,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:01:36,403 INFO L87 Difference]: Start difference. First operand 6793 states and 9694 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-02 20:01:38,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:03:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:03:55,179 INFO L93 Difference]: Finished difference Result 20155 states and 28824 transitions. [2021-11-02 20:03:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:03:55,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-02 20:03:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:03:55,223 INFO L225 Difference]: With dead ends: 20155 [2021-11-02 20:03:55,223 INFO L226 Difference]: Without dead ends: 13433 [2021-11-02 20:03:55,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:03:55,237 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9553 mSDsluCounter, 9631 mSDsCounter, 0 mSdLazyCounter, 19318 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129783.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9553 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 149.82ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137351.61ms IncrementalHoareTripleChecker+Time [2021-11-02 20:03:55,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9553 Valid, 0 Invalid, 19322 Unknown, 0 Unchecked, 149.82ms Time], IncrementalHoareTripleChecker [3 Valid, 19318 Invalid, 1 Unknown, 0 Unchecked, 137351.61ms Time] [2021-11-02 20:03:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13433 states. [2021-11-02 20:03:55,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13433 to 13433. [2021-11-02 20:03:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13433 states, 13429 states have (on average 1.4304862610767741) internal successors, (19210), 13432 states have internal predecessors, (19210), 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) [2021-11-02 20:03:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13433 states to 13433 states and 19210 transitions. [2021-11-02 20:03:55,515 INFO L78 Accepts]: Start accepts. Automaton has 13433 states and 19210 transitions. Word has length 79 [2021-11-02 20:03:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:03:55,517 INFO L470 AbstractCegarLoop]: Abstraction has 13433 states and 19210 transitions. [2021-11-02 20:03:55,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2021-11-02 20:03:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 13433 states and 19210 transitions. [2021-11-02 20:03:55,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 20:03:55,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:03:55,521 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:03:55,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 20:03:55,521 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 20:03:55,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:03:55,522 INFO L85 PathProgramCache]: Analyzing trace with hash 560374393, now seen corresponding path program 1 times [2021-11-02 20:03:55,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:03:55,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788812316] [2021-11-02 20:03:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:03:55,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:03:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:03:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:03:56,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:03:56,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788812316] [2021-11-02 20:03:56,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788812316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:03:56,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:03:56,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 20:03:56,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686368590] [2021-11-02 20:03:56,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 20:03:56,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:03:56,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 20:03:56,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:03:56,066 INFO L87 Difference]: Start difference. First operand 13433 states and 19210 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-11-02 20:03:58,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 20:06:16,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 20:06:16,475 INFO L93 Difference]: Finished difference Result 26791 states and 38334 transitions. [2021-11-02 20:06:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 20:06:16,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 91 [2021-11-02 20:06:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 20:06:16,543 INFO L225 Difference]: With dead ends: 26791 [2021-11-02 20:06:16,544 INFO L226 Difference]: Without dead ends: 26780 [2021-11-02 20:06:16,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 20:06:16,559 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9583 mSDsluCounter, 9601 mSDsCounter, 0 mSdLazyCounter, 19291 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130307.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9583 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.12ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19291 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138839.97ms IncrementalHoareTripleChecker+Time [2021-11-02 20:06:16,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9583 Valid, 0 Invalid, 19298 Unknown, 0 Unchecked, 120.12ms Time], IncrementalHoareTripleChecker [6 Valid, 19291 Invalid, 1 Unknown, 0 Unchecked, 138839.97ms Time] [2021-11-02 20:06:16,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26780 states. [2021-11-02 20:06:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26780 to 26780. [2021-11-02 20:06:17,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26780 states, 26777 states have (on average 1.4311536019718416) internal successors, (38322), 26779 states have internal predecessors, (38322), 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) [2021-11-02 20:06:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26780 states to 26780 states and 38322 transitions. [2021-11-02 20:06:17,197 INFO L78 Accepts]: Start accepts. Automaton has 26780 states and 38322 transitions. Word has length 91 [2021-11-02 20:06:17,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 20:06:17,197 INFO L470 AbstractCegarLoop]: Abstraction has 26780 states and 38322 transitions. [2021-11-02 20:06:17,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-11-02 20:06:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 26780 states and 38322 transitions. [2021-11-02 20:06:17,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 20:06:17,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 20:06:17,208 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 20:06:17,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 20:06:17,212 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-02 20:06:17,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 20:06:17,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1276452321, now seen corresponding path program 1 times [2021-11-02 20:06:17,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 20:06:17,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197998753] [2021-11-02 20:06:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 20:06:17,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 20:06:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 20:06:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 20:06:17,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 20:06:17,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197998753] [2021-11-02 20:06:17,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197998753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 20:06:17,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 20:06:17,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 20:06:17,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256114599] [2021-11-02 20:06:17,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 20:06:17,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 20:06:17,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 20:06:17,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 20:06:17,796 INFO L87 Difference]: Start difference. First operand 26780 states and 38322 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2021-11-02 20:06:19,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15