./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:17:34,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:17:34,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:17:34,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:17:34,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:17:34,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:17:34,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:17:34,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:17:34,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:17:34,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:17:34,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:17:34,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:17:34,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:17:34,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:17:34,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:17:34,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:17:34,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:17:34,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:17:34,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:17:34,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:17:34,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:17:34,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:17:34,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:17:34,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:17:34,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:17:34,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:17:34,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:17:34,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:17:34,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:17:34,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:17:34,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:17:34,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:17:34,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:17:34,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:17:34,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:17:34,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:17:34,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:17:34,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:17:34,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:17:34,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:17:34,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:17:34,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:17:34,334 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:17:34,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:17:34,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:17:34,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:17:34,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:17:34,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:17:34,337 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:17:34,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:17:34,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:17:34,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:17:34,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:17:34,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:17:34,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:17:34,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:17:34,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:17:34,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:17:34,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:17:34,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:17:34,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:17:34,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:17:34,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:17:34,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:17:34,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:17:34,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:17:34,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:17:34,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:17:34,342 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:17:34,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:17:34,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:17:34,342 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d5b4b32fa0da80203e2a18166964cfde265e42cc1a9ca2751016d17ee22d414 [2021-11-06 15:17:34,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:17:34,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:17:34,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:17:34,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:17:34,609 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:17:34,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-06 15:17:34,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/411af4165/a5b272c1c3ae4a2d894684cbbcc3d972/FLAG43ddc2568 [2021-11-06 15:17:35,474 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:17:35,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-06 15:17:35,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/411af4165/a5b272c1c3ae4a2d894684cbbcc3d972/FLAG43ddc2568 [2021-11-06 15:17:36,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/411af4165/a5b272c1c3ae4a2d894684cbbcc3d972 [2021-11-06 15:17:36,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:17:36,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:17:36,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:17:36,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:17:36,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:17:36,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:17:36" (1/1) ... [2021-11-06 15:17:36,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518b7bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:36, skipping insertion in model container [2021-11-06 15:17:36,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:17:36" (1/1) ... [2021-11-06 15:17:36,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:17:36,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:17:37,017 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-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[110947,110960] [2021-11-06 15:17:37,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:17:37,497 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:17:37,636 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-v0.6/linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[110947,110960] [2021-11-06 15:17:37,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:17:37,927 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:17:37,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37 WrapperNode [2021-11-06 15:17:37,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:17:37,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:17:37,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:17:37,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:17:37,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37" (1/1) ... [2021-11-06 15:17:37,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37" (1/1) ... [2021-11-06 15:17:39,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:17:39,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:17:39,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:17:39,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:17:39,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37" (1/1) ... [2021-11-06 15:17:39,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37" (1/1) ... [2021-11-06 15:17:39,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37" (1/1) ... [2021-11-06 15:17:39,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37" (1/1) ... [2021-11-06 15:17:40,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37" (1/1) ... [2021-11-06 15:17:41,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37" (1/1) ... [2021-11-06 15:17:41,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37" (1/1) ... [2021-11-06 15:17:41,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:17:41,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:17:41,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:17:41,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:17:41,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37" (1/1) ... [2021-11-06 15:17:41,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:17:41,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:17:41,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 15:17:41,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 15:17:41,565 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 15:17:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:17:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:17:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:17:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:17:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:17:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:17:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:17:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:17:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:17:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:17:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:17:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-06 15:17:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:17:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 15:17:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:17:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:17:41,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:22:19,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:22:19,579 INFO L299 CfgBuilder]: Removed 8359 assume(true) statements. [2021-11-06 15:22:19,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:22:19 BoogieIcfgContainer [2021-11-06 15:22:19,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:22:19,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:22:19,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:22:19,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:22:19,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:17:36" (1/3) ... [2021-11-06 15:22:19,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796d8bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:22:19, skipping insertion in model container [2021-11-06 15:22:19,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:17:37" (2/3) ... [2021-11-06 15:22:19,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796d8bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:22:19, skipping insertion in model container [2021-11-06 15:22:19,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:22:19" (3/3) ... [2021-11-06 15:22:19,599 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-5742d35-1-136_1a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-06 15:22:19,604 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:22:19,604 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-06 15:22:19,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:22:19,705 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 15:22:19,705 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-06 15:22:20,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 10332 states, 10320 states have (on average 1.5155038759689923) internal successors, (15640), 10331 states have internal predecessors, (15640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-06 15:22:20,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:22:20,094 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:22:20,094 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 15:22:20,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:22:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1946913747, now seen corresponding path program 1 times [2021-11-06 15:22:20,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:22:20,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760286562] [2021-11-06 15:22:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:22:20,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:22:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:22:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:22:21,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:22:21,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760286562] [2021-11-06 15:22:21,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760286562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:22:21,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:22:21,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:22:21,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433016788] [2021-11-06 15:22:21,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:22:21,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:22:21,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:22:21,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:22:21,173 INFO L87 Difference]: Start difference. First operand has 10332 states, 10320 states have (on average 1.5155038759689923) internal successors, (15640), 10331 states have internal predecessors, (15640), 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 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:24,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:22:24,143 INFO L93 Difference]: Finished difference Result 24000 states and 35614 transitions. [2021-11-06 15:22:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:22:24,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-11-06 15:22:24,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:22:24,237 INFO L225 Difference]: With dead ends: 24000 [2021-11-06 15:22:24,237 INFO L226 Difference]: Without dead ends: 13659 [2021-11-06 15:22:24,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:22:24,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13659 states. [2021-11-06 15:22:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13659 to 13659. [2021-11-06 15:22:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13659 states, 13648 states have (on average 1.4243845252051583) internal successors, (19440), 13658 states have internal predecessors, (19440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:24,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13659 states to 13659 states and 19440 transitions. [2021-11-06 15:22:24,789 INFO L78 Accepts]: Start accepts. Automaton has 13659 states and 19440 transitions. Word has length 21 [2021-11-06 15:22:24,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:22:24,790 INFO L470 AbstractCegarLoop]: Abstraction has 13659 states and 19440 transitions. [2021-11-06 15:22:24,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:24,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13659 states and 19440 transitions. [2021-11-06 15:22:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 15:22:24,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:22:24,801 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:22:24,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:22:24,802 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 15:22:24,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:22:24,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1496146930, now seen corresponding path program 1 times [2021-11-06 15:22:24,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:22:24,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121625976] [2021-11-06 15:22:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:22:24,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:22:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:22:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:22:25,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:22:25,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121625976] [2021-11-06 15:22:25,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121625976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:22:25,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:22:25,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:22:25,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305477798] [2021-11-06 15:22:25,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:22:25,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:22:25,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:22:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:22:25,494 INFO L87 Difference]: Start difference. First operand 13659 states and 19440 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:29,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:22:29,119 INFO L93 Difference]: Finished difference Result 108904 states and 155077 transitions. [2021-11-06 15:22:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 15:22:29,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 36 [2021-11-06 15:22:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:22:29,528 INFO L225 Difference]: With dead ends: 108904 [2021-11-06 15:22:29,529 INFO L226 Difference]: Without dead ends: 95273 [2021-11-06 15:22:29,605 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-06 15:22:29,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95273 states. [2021-11-06 15:22:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95273 to 13662. [2021-11-06 15:22:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13662 states, 13651 states have (on average 1.4242912607135008) internal successors, (19443), 13661 states have internal predecessors, (19443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13662 states to 13662 states and 19443 transitions. [2021-11-06 15:22:30,623 INFO L78 Accepts]: Start accepts. Automaton has 13662 states and 19443 transitions. Word has length 36 [2021-11-06 15:22:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:22:30,623 INFO L470 AbstractCegarLoop]: Abstraction has 13662 states and 19443 transitions. [2021-11-06 15:22:30,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:30,624 INFO L276 IsEmpty]: Start isEmpty. Operand 13662 states and 19443 transitions. [2021-11-06 15:22:30,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 15:22:30,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:22:30,629 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:22:30,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:22:30,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 15:22:30,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:22:30,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2118761996, now seen corresponding path program 1 times [2021-11-06 15:22:30,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:22:30,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583234844] [2021-11-06 15:22:30,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:22:30,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:22:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:22:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:22:31,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:22:31,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583234844] [2021-11-06 15:22:31,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583234844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:22:31,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:22:31,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:22:31,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294740457] [2021-11-06 15:22:31,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:22:31,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:22:31,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:22:31,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:22:31,225 INFO L87 Difference]: Start difference. First operand 13662 states and 19443 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:22:31,885 INFO L93 Difference]: Finished difference Result 27266 states and 38824 transitions. [2021-11-06 15:22:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:22:31,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 36 [2021-11-06 15:22:31,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:22:31,969 INFO L225 Difference]: With dead ends: 27266 [2021-11-06 15:22:31,970 INFO L226 Difference]: Without dead ends: 27249 [2021-11-06 15:22:31,989 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:22:32,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27249 states. [2021-11-06 15:22:32,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27249 to 27249. [2021-11-06 15:22:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27249 states, 27239 states have (on average 1.424648481956019) internal successors, (38806), 27248 states have internal predecessors, (38806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27249 states to 27249 states and 38806 transitions. [2021-11-06 15:22:32,935 INFO L78 Accepts]: Start accepts. Automaton has 27249 states and 38806 transitions. Word has length 36 [2021-11-06 15:22:32,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:22:32,936 INFO L470 AbstractCegarLoop]: Abstraction has 27249 states and 38806 transitions. [2021-11-06 15:22:32,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:32,936 INFO L276 IsEmpty]: Start isEmpty. Operand 27249 states and 38806 transitions. [2021-11-06 15:22:32,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-06 15:22:32,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:22:32,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:22:32,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:22:32,943 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 15:22:32,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:22:32,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1257075782, now seen corresponding path program 1 times [2021-11-06 15:22:32,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:22:32,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783995299] [2021-11-06 15:22:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:22:32,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:22:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:22:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:22:33,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:22:33,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783995299] [2021-11-06 15:22:33,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783995299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:22:33,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:22:33,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:22:33,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85631331] [2021-11-06 15:22:33,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:22:33,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:22:33,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:22:33,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:22:33,391 INFO L87 Difference]: Start difference. First operand 27249 states and 38806 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:34,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:22:34,733 INFO L93 Difference]: Finished difference Result 81660 states and 116324 transitions. [2021-11-06 15:22:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:22:34,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2021-11-06 15:22:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:22:34,910 INFO L225 Difference]: With dead ends: 81660 [2021-11-06 15:22:34,911 INFO L226 Difference]: Without dead ends: 54437 [2021-11-06 15:22:34,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:22:35,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54437 states. [2021-11-06 15:22:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54437 to 54423. [2021-11-06 15:22:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54423 states, 54414 states have (on average 1.4249274083875474) internal successors, (77536), 54422 states have internal predecessors, (77536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:36,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54423 states to 54423 states and 77536 transitions. [2021-11-06 15:22:36,566 INFO L78 Accepts]: Start accepts. Automaton has 54423 states and 77536 transitions. Word has length 37 [2021-11-06 15:22:36,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:22:36,567 INFO L470 AbstractCegarLoop]: Abstraction has 54423 states and 77536 transitions. [2021-11-06 15:22:36,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 54423 states and 77536 transitions. [2021-11-06 15:22:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 15:22:36,575 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:22:36,576 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:22:36,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:22:36,581 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 15:22:36,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:22:36,581 INFO L85 PathProgramCache]: Analyzing trace with hash 529445630, now seen corresponding path program 1 times [2021-11-06 15:22:36,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:22:36,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169412425] [2021-11-06 15:22:36,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:22:36,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:22:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:22:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:22:37,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:22:37,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169412425] [2021-11-06 15:22:37,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169412425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:22:37,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:22:37,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:22:37,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995731840] [2021-11-06 15:22:37,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:22:37,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:22:37,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:22:37,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:22:37,330 INFO L87 Difference]: Start difference. First operand 54423 states and 77536 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:41,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:22:41,525 INFO L93 Difference]: Finished difference Result 231034 states and 329191 transitions. [2021-11-06 15:22:41,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 15:22:41,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 40 [2021-11-06 15:22:41,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:22:42,320 INFO L225 Difference]: With dead ends: 231034 [2021-11-06 15:22:42,321 INFO L226 Difference]: Without dead ends: 176639 [2021-11-06 15:22:42,443 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-06 15:22:42,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176639 states. [2021-11-06 15:22:44,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176639 to 54429. [2021-11-06 15:22:44,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54429 states, 54420 states have (on average 1.424880558618155) internal successors, (77542), 54428 states have internal predecessors, (77542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:44,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54429 states to 54429 states and 77542 transitions. [2021-11-06 15:22:44,931 INFO L78 Accepts]: Start accepts. Automaton has 54429 states and 77542 transitions. Word has length 40 [2021-11-06 15:22:44,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:22:44,931 INFO L470 AbstractCegarLoop]: Abstraction has 54429 states and 77542 transitions. [2021-11-06 15:22:44,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:44,932 INFO L276 IsEmpty]: Start isEmpty. Operand 54429 states and 77542 transitions. [2021-11-06 15:22:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 15:22:44,937 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:22:44,938 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:22:44,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:22:44,938 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 15:22:44,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:22:44,939 INFO L85 PathProgramCache]: Analyzing trace with hash -279900996, now seen corresponding path program 1 times [2021-11-06 15:22:44,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:22:44,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885487896] [2021-11-06 15:22:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:22:44,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:22:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:22:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:22:45,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:22:45,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885487896] [2021-11-06 15:22:45,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885487896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:22:45,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:22:45,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:22:45,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579048066] [2021-11-06 15:22:45,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:22:45,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:22:45,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:22:45,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:22:45,466 INFO L87 Difference]: Start difference. First operand 54429 states and 77542 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:48,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:22:48,852 INFO L93 Difference]: Finished difference Result 54443 states and 77549 transitions. [2021-11-06 15:22:48,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:22:48,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-06 15:22:48,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:22:48,991 INFO L225 Difference]: With dead ends: 54443 [2021-11-06 15:22:48,991 INFO L226 Difference]: Without dead ends: 54437 [2021-11-06 15:22:49,018 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:22:49,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54437 states. [2021-11-06 15:22:50,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54437 to 54429. [2021-11-06 15:22:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54429 states, 54420 states have (on average 1.4248254318265343) internal successors, (77539), 54428 states have internal predecessors, (77539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54429 states to 54429 states and 77539 transitions. [2021-11-06 15:22:50,478 INFO L78 Accepts]: Start accepts. Automaton has 54429 states and 77539 transitions. Word has length 40 [2021-11-06 15:22:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:22:50,479 INFO L470 AbstractCegarLoop]: Abstraction has 54429 states and 77539 transitions. [2021-11-06 15:22:50,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand 54429 states and 77539 transitions. [2021-11-06 15:22:50,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 15:22:50,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:22:50,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:22:50,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:22:50,486 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 15:22:50,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:22:50,486 INFO L85 PathProgramCache]: Analyzing trace with hash -866707010, now seen corresponding path program 1 times [2021-11-06 15:22:50,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:22:50,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342145788] [2021-11-06 15:22:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:22:50,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:22:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:22:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:22:51,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:22:51,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342145788] [2021-11-06 15:22:51,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342145788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:22:51,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:22:51,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 15:22:51,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027019732] [2021-11-06 15:22:51,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:22:51,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:22:51,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:22:51,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:22:51,046 INFO L87 Difference]: Start difference. First operand 54429 states and 77539 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:54,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:22:54,152 INFO L93 Difference]: Finished difference Result 142699 states and 203316 transitions. [2021-11-06 15:22:54,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:22:54,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 40 [2021-11-06 15:22:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:22:54,317 INFO L225 Difference]: With dead ends: 142699 [2021-11-06 15:22:54,317 INFO L226 Difference]: Without dead ends: 88298 [2021-11-06 15:22:54,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-06 15:22:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88298 states. [2021-11-06 15:22:56,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88298 to 40824. [2021-11-06 15:22:56,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40824 states, 40816 states have (on average 1.4246373970991768) internal successors, (58148), 40823 states have internal predecessors, (58148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40824 states to 40824 states and 58148 transitions. [2021-11-06 15:22:56,366 INFO L78 Accepts]: Start accepts. Automaton has 40824 states and 58148 transitions. Word has length 40 [2021-11-06 15:22:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:22:56,366 INFO L470 AbstractCegarLoop]: Abstraction has 40824 states and 58148 transitions. [2021-11-06 15:22:56,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:22:56,367 INFO L276 IsEmpty]: Start isEmpty. Operand 40824 states and 58148 transitions. [2021-11-06 15:22:56,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 15:22:56,375 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:22:56,375 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:22:56,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:22:56,376 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 15:22:56,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:22:56,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1690408186, now seen corresponding path program 1 times [2021-11-06 15:22:56,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:22:56,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372240208] [2021-11-06 15:22:56,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:22:56,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:22:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:22:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:22:57,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:22:57,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372240208] [2021-11-06 15:22:57,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372240208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:22:57,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:22:57,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 15:22:57,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23085184] [2021-11-06 15:22:57,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 15:22:57,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:22:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 15:22:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:22:57,029 INFO L87 Difference]: Start difference. First operand 40824 states and 58148 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:23:01,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:23:01,253 INFO L93 Difference]: Finished difference Result 122338 states and 174275 transitions. [2021-11-06 15:23:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 15:23:01,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2021-11-06 15:23:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:23:01,493 INFO L225 Difference]: With dead ends: 122338 [2021-11-06 15:23:01,493 INFO L226 Difference]: Without dead ends: 122326 [2021-11-06 15:23:01,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-06 15:23:01,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122326 states. [2021-11-06 15:23:03,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122326 to 40828. [2021-11-06 15:23:03,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40828 states, 40820 states have (on average 1.4245957863792258) internal successors, (58152), 40827 states have internal predecessors, (58152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:23:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40828 states to 40828 states and 58152 transitions. [2021-11-06 15:23:03,603 INFO L78 Accepts]: Start accepts. Automaton has 40828 states and 58152 transitions. Word has length 45 [2021-11-06 15:23:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:23:03,604 INFO L470 AbstractCegarLoop]: Abstraction has 40828 states and 58152 transitions. [2021-11-06 15:23:03,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:23:03,604 INFO L276 IsEmpty]: Start isEmpty. Operand 40828 states and 58152 transitions. [2021-11-06 15:23:03,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 15:23:03,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:23:03,611 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:23:03,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:23:03,612 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 15:23:03,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:23:03,612 INFO L85 PathProgramCache]: Analyzing trace with hash 867246282, now seen corresponding path program 1 times [2021-11-06 15:23:03,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:23:03,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031232990] [2021-11-06 15:23:03,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:23:03,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:23:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:23:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:23:03,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:23:03,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031232990] [2021-11-06 15:23:03,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031232990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:23:03,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:23:03,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:23:03,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081342765] [2021-11-06 15:23:03,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:23:03,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:23:03,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:23:03,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:23:03,985 INFO L87 Difference]: Start difference. First operand 40828 states and 58152 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:23:05,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:23:05,805 INFO L93 Difference]: Finished difference Result 81748 states and 116420 transitions. [2021-11-06 15:23:05,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:23:05,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2021-11-06 15:23:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:23:05,878 INFO L225 Difference]: With dead ends: 81748 [2021-11-06 15:23:05,878 INFO L226 Difference]: Without dead ends: 40948 [2021-11-06 15:23:05,928 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:23:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40948 states.