./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 c36dfa3b 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-c36dfa3 [2021-11-04 05:34:17,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 05:34:17,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 05:34:17,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 05:34:17,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 05:34:17,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 05:34:17,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 05:34:17,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 05:34:17,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 05:34:17,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 05:34:17,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 05:34:17,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 05:34:17,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 05:34:17,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 05:34:17,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 05:34:17,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 05:34:17,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 05:34:17,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 05:34:17,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 05:34:17,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 05:34:17,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 05:34:17,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 05:34:17,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 05:34:17,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 05:34:17,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 05:34:17,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 05:34:17,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 05:34:17,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 05:34:17,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 05:34:17,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 05:34:17,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 05:34:17,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 05:34:17,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 05:34:17,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 05:34:17,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 05:34:17,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 05:34:17,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 05:34:17,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 05:34:17,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 05:34:17,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 05:34:17,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 05:34:17,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 05:34:17,590 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 05:34:17,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 05:34:17,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 05:34:17,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 05:34:17,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 05:34:17,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 05:34:17,593 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 05:34:17,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 05:34:17,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 05:34:17,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 05:34:17,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 05:34:17,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 05:34:17,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 05:34:17,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 05:34:17,595 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 05:34:17,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 05:34:17,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 05:34:17,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 05:34:17,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 05:34:17,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 05:34:17,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 05:34:17,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 05:34:17,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 05:34:17,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 05:34:17,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 05:34:17,596 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 05:34:17,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 05:34:17,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 05:34:17,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 05:34:17,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec1c916a4e8241683d3d78dd3b5f266227914917d53067d3c7741f08a3fdd65b [2021-11-04 05:34:17,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 05:34:17,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 05:34:17,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 05:34:17,823 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 05:34:17,824 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 05:34:17,824 INFO L432 ainManager$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 [2021-11-04 05:34:17,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa3e60807/80ae55bbc99e43e583c01634d3ae851d/FLAG9ea131c00 [2021-11-04 05:34:18,475 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 05:34:18,475 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 [2021-11-04 05:34:18,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa3e60807/80ae55bbc99e43e583c01634d3ae851d/FLAG9ea131c00 [2021-11-04 05:34:18,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa3e60807/80ae55bbc99e43e583c01634d3ae851d [2021-11-04 05:34:18,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 05:34:18,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 05:34:18,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 05:34:18,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 05:34:18,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 05:34:18,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:34:18" (1/1) ... [2021-11-04 05:34:18,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4642ece1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:18, skipping insertion in model container [2021-11-04 05:34:18,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:34:18" (1/1) ... [2021-11-04 05:34:18,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 05:34:18,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 05:34:19,761 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] [2021-11-04 05:34:19,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 05:34:19,812 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 05:34:20,051 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] [2021-11-04 05:34:20,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 05:34:20,113 INFO L208 MainTranslator]: Completed translation [2021-11-04 05:34:20,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20 WrapperNode [2021-11-04 05:34:20,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 05:34:20,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 05:34:20,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 05:34:20,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 05:34:20,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20" (1/1) ... [2021-11-04 05:34:20,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20" (1/1) ... [2021-11-04 05:34:20,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 05:34:20,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 05:34:20,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 05:34:20,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 05:34:20,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20" (1/1) ... [2021-11-04 05:34:20,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20" (1/1) ... [2021-11-04 05:34:21,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20" (1/1) ... [2021-11-04 05:34:21,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20" (1/1) ... [2021-11-04 05:34:21,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20" (1/1) ... [2021-11-04 05:34:21,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20" (1/1) ... [2021-11-04 05:34:21,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20" (1/1) ... [2021-11-04 05:34:22,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 05:34:22,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 05:34:22,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 05:34:22,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 05:34:22,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20" (1/1) ... [2021-11-04 05:34:22,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 05:34:22,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 05:34:22,089 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) [2021-11-04 05:34:22,143 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 [2021-11-04 05:34:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 05:34:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-04 05:34:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 05:34:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 05:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 05:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 05:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 05:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 05:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 05:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 05:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 05:34:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 05:34:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 05:34:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 05:34:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 05:34:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 05:34:22,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 05:36:41,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 05:36:41,842 INFO L299 CfgBuilder]: Removed 5913 assume(true) statements. [2021-11-04 05:36:41,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:36:41 BoogieIcfgContainer [2021-11-04 05:36:41,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 05:36:41,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 05:36:41,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 05:36:41,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 05:36:41,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 05:34:18" (1/3) ... [2021-11-04 05:36:41,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ee28e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:36:41, skipping insertion in model container [2021-11-04 05:36:41,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:34:20" (2/3) ... [2021-11-04 05:36:41,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ee28e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:36:41, skipping insertion in model container [2021-11-04 05:36:41,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:36:41" (3/3) ... [2021-11-04 05:36:41,859 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 [2021-11-04 05:36:41,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 05:36:41,864 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-04 05:36:41,911 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 05:36:41,916 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 [2021-11-04 05:36:41,916 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-04 05:36:41,994 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) [2021-11-04 05:36:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-04 05:36:42,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:36:42,004 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] [2021-11-04 05:36:42,004 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)] === [2021-11-04 05:36:42,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:36:42,011 INFO L85 PathProgramCache]: Analyzing trace with hash -597361012, now seen corresponding path program 1 times [2021-11-04 05:36:42,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:36:42,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916497940] [2021-11-04 05:36:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:36:42,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:36:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:36:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:36:42,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:36:42,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916497940] [2021-11-04 05:36:42,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916497940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:36:42,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:36:42,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:36:42,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025918413] [2021-11-04 05:36:42,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:36:42,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 05:36:42,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:36:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 05:36:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 05:36:42,746 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) [2021-11-04 05:36:44,878 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 [] [2021-11-04 05:37:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:37:15,573 INFO L93 Difference]: Finished difference Result 13582 states and 19811 transitions. [2021-11-04 05:37:15,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 05:37:15,576 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 [2021-11-04 05:37:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:37:15,609 INFO L225 Difference]: With dead ends: 13582 [2021-11-04 05:37:15,609 INFO L226 Difference]: Without dead ends: 6781 [2021-11-04 05:37:15,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 05:37:15,627 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9694 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29914.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9694 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32194.88ms IncrementalHoareTripleChecker+Time [2021-11-04 05:37:15,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 9695 Unknown, 0 Unchecked, 30.45ms Time], IncrementalHoareTripleChecker [0 Valid, 9694 Invalid, 1 Unknown, 0 Unchecked, 32194.88ms Time] [2021-11-04 05:37:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6781 states. [2021-11-04 05:37:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6781 to 6781. [2021-11-04 05:37:15,785 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) [2021-11-04 05:37:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 9682 transitions. [2021-11-04 05:37:15,803 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 9682 transitions. Word has length 67 [2021-11-04 05:37:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:37:15,803 INFO L470 AbstractCegarLoop]: Abstraction has 6781 states and 9682 transitions. [2021-11-04 05:37:15,804 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) [2021-11-04 05:37:15,804 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 9682 transitions. [2021-11-04 05:37:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-04 05:37:15,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:37:15,810 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] [2021-11-04 05:37:15,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 05:37:15,811 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)] === [2021-11-04 05:37:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:37:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1226720446, now seen corresponding path program 1 times [2021-11-04 05:37:15,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:37:15,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408732220] [2021-11-04 05:37:15,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:37:15,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:37:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:37:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:37:16,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:37:16,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408732220] [2021-11-04 05:37:16,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408732220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:37:16,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:37:16,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:37:16,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461098489] [2021-11-04 05:37:16,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:37:16,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:37:16,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:37:16,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:37:16,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:37:16,145 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) [2021-11-04 05:37:18,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:38:26,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:38:26,317 INFO L93 Difference]: Finished difference Result 13548 states and 19359 transitions. [2021-11-04 05:38:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:38:26,318 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 [2021-11-04 05:38:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:38:26,341 INFO L225 Difference]: With dead ends: 13548 [2021-11-04 05:38:26,342 INFO L226 Difference]: Without dead ends: 6791 [2021-11-04 05:38:26,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.61ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:38:26,359 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 9609 mSDsCounter, 0 mSdLazyCounter, 19352 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65192.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 113.50ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 19352 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69293.82ms IncrementalHoareTripleChecker+Time [2021-11-04 05:38:26,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19371 Unknown, 0 Unchecked, 113.50ms Time], IncrementalHoareTripleChecker [18 Valid, 19352 Invalid, 1 Unknown, 0 Unchecked, 69293.82ms Time] [2021-11-04 05:38:26,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6791 states. [2021-11-04 05:38:26,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6791 to 6791. [2021-11-04 05:38:26,479 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) [2021-11-04 05:38:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6791 states to 6791 states and 9692 transitions. [2021-11-04 05:38:26,490 INFO L78 Accepts]: Start accepts. Automaton has 6791 states and 9692 transitions. Word has length 67 [2021-11-04 05:38:26,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:38:26,492 INFO L470 AbstractCegarLoop]: Abstraction has 6791 states and 9692 transitions. [2021-11-04 05:38:26,493 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) [2021-11-04 05:38:26,493 INFO L276 IsEmpty]: Start isEmpty. Operand 6791 states and 9692 transitions. [2021-11-04 05:38:26,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-04 05:38:26,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:38:26,496 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] [2021-11-04 05:38:26,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 05:38:26,497 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)] === [2021-11-04 05:38:26,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:38:26,501 INFO L85 PathProgramCache]: Analyzing trace with hash 565659874, now seen corresponding path program 1 times [2021-11-04 05:38:26,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:38:26,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623962200] [2021-11-04 05:38:26,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:38:26,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:38:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:38:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 05:38:26,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:38:26,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623962200] [2021-11-04 05:38:26,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623962200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:38:26,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:38:26,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:38:26,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952371286] [2021-11-04 05:38:26,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:38:26,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:38:26,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:38:26,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:38:26,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:38:26,818 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) [2021-11-04 05:38:28,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:40:15,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:40:15,804 INFO L93 Difference]: Finished difference Result 13552 states and 19353 transitions. [2021-11-04 05:40:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:40:15,805 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 [2021-11-04 05:40:15,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:40:15,825 INFO L225 Difference]: With dead ends: 13552 [2021-11-04 05:40:15,826 INFO L226 Difference]: Without dead ends: 6793 [2021-11-04 05:40:15,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:40:15,841 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 9609 mSDsCounter, 0 mSdLazyCounter, 19360 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102657.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 116.01ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19360 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108128.44ms IncrementalHoareTripleChecker+Time [2021-11-04 05:40:15,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19363 Unknown, 0 Unchecked, 116.01ms Time], IncrementalHoareTripleChecker [2 Valid, 19360 Invalid, 1 Unknown, 0 Unchecked, 108128.44ms Time] [2021-11-04 05:40:15,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6793 states. [2021-11-04 05:40:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6793 to 6793. [2021-11-04 05:40:15,928 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) [2021-11-04 05:40:15,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6793 states to 6793 states and 9694 transitions. [2021-11-04 05:40:15,942 INFO L78 Accepts]: Start accepts. Automaton has 6793 states and 9694 transitions. Word has length 77 [2021-11-04 05:40:15,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:40:15,943 INFO L470 AbstractCegarLoop]: Abstraction has 6793 states and 9694 transitions. [2021-11-04 05:40:15,943 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) [2021-11-04 05:40:15,943 INFO L276 IsEmpty]: Start isEmpty. Operand 6793 states and 9694 transitions. [2021-11-04 05:40:15,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-04 05:40:15,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:40:15,945 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] [2021-11-04 05:40:15,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 05:40:15,945 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)] === [2021-11-04 05:40:15,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:40:15,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1121493386, now seen corresponding path program 1 times [2021-11-04 05:40:15,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:40:15,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944486720] [2021-11-04 05:40:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:40:15,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:40:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:40:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 05:40:16,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:40:16,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944486720] [2021-11-04 05:40:16,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944486720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:40:16,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:40:16,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:40:16,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695158324] [2021-11-04 05:40:16,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:40:16,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:40:16,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:40:16,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:40:16,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:40:16,278 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) [2021-11-04 05:40:18,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:42:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:42:17,001 INFO L93 Difference]: Finished difference Result 20155 states and 28824 transitions. [2021-11-04 05:42:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:42:17,002 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 [2021-11-04 05:42:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:42:17,045 INFO L225 Difference]: With dead ends: 20155 [2021-11-04 05:42:17,045 INFO L226 Difference]: Without dead ends: 13433 [2021-11-04 05:42:17,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:42:17,055 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9553 mSDsluCounter, 9631 mSDsCounter, 0 mSdLazyCounter, 19318 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111943.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9553 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 131.71ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19318 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119339.56ms IncrementalHoareTripleChecker+Time [2021-11-04 05:42:17,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9553 Valid, 0 Invalid, 19322 Unknown, 0 Unchecked, 131.71ms Time], IncrementalHoareTripleChecker [3 Valid, 19318 Invalid, 1 Unknown, 0 Unchecked, 119339.56ms Time] [2021-11-04 05:42:17,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13433 states. [2021-11-04 05:42:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13433 to 13433. [2021-11-04 05:42:17,264 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) [2021-11-04 05:42:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13433 states to 13433 states and 19210 transitions. [2021-11-04 05:42:17,288 INFO L78 Accepts]: Start accepts. Automaton has 13433 states and 19210 transitions. Word has length 79 [2021-11-04 05:42:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:42:17,290 INFO L470 AbstractCegarLoop]: Abstraction has 13433 states and 19210 transitions. [2021-11-04 05:42:17,290 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) [2021-11-04 05:42:17,290 INFO L276 IsEmpty]: Start isEmpty. Operand 13433 states and 19210 transitions. [2021-11-04 05:42:17,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-04 05:42:17,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:42:17,293 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] [2021-11-04 05:42:17,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 05:42:17,293 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)] === [2021-11-04 05:42:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:42:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash 560374393, now seen corresponding path program 1 times [2021-11-04 05:42:17,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:42:17,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674167139] [2021-11-04 05:42:17,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:42:17,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:42:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:42:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 05:42:17,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:42:17,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674167139] [2021-11-04 05:42:17,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674167139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:42:17,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:42:17,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:42:17,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993594211] [2021-11-04 05:42:17,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:42:17,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:42:17,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:42:17,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:42:17,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:42:17,639 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) [2021-11-04 05:42:19,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:44:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:44:18,555 INFO L93 Difference]: Finished difference Result 26791 states and 38334 transitions. [2021-11-04 05:44:18,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:44:18,556 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 [2021-11-04 05:44:18,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:44:18,608 INFO L225 Difference]: With dead ends: 26791 [2021-11-04 05:44:18,608 INFO L226 Difference]: Without dead ends: 26780 [2021-11-04 05:44:18,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:44:18,622 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9583 mSDsluCounter, 9601 mSDsCounter, 0 mSdLazyCounter, 19291 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111455.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9583 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 115.03ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19291 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 119348.37ms IncrementalHoareTripleChecker+Time [2021-11-04 05:44:18,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9583 Valid, 0 Invalid, 19298 Unknown, 0 Unchecked, 115.03ms Time], IncrementalHoareTripleChecker [6 Valid, 19291 Invalid, 1 Unknown, 0 Unchecked, 119348.37ms Time] [2021-11-04 05:44:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26780 states. [2021-11-04 05:44:18,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26780 to 26780. [2021-11-04 05:44:18,983 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) [2021-11-04 05:44:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26780 states to 26780 states and 38322 transitions. [2021-11-04 05:44:19,027 INFO L78 Accepts]: Start accepts. Automaton has 26780 states and 38322 transitions. Word has length 91 [2021-11-04 05:44:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:44:19,028 INFO L470 AbstractCegarLoop]: Abstraction has 26780 states and 38322 transitions. [2021-11-04 05:44:19,029 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) [2021-11-04 05:44:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 26780 states and 38322 transitions. [2021-11-04 05:44:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 05:44:19,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:44:19,037 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] [2021-11-04 05:44:19,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 05:44:19,037 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)] === [2021-11-04 05:44:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:44:19,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1276452321, now seen corresponding path program 1 times [2021-11-04 05:44:19,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:44:19,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895345317] [2021-11-04 05:44:19,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:44:19,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:44:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:44:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 05:44:19,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:44:19,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895345317] [2021-11-04 05:44:19,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895345317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:44:19,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:44:19,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-04 05:44:19,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281792619] [2021-11-04 05:44:19,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:44:19,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 05:44:19,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:44:19,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 05:44:19,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-04 05:44:19,485 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) [2021-11-04 05:44:21,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15