./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.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 b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:50:35,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:50:35,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:50:35,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:50:35,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:50:35,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:50:35,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:50:35,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:50:35,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:50:35,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:50:35,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:50:35,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:50:35,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:50:35,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:50:35,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:50:35,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:50:35,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:50:35,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:50:35,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:50:35,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:50:35,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:50:35,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:50:35,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:50:35,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:50:35,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:50:35,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:50:35,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:50:35,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:50:35,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:50:35,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:50:35,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:50:35,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:50:35,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:50:35,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:50:35,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:50:35,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:50:35,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:50:35,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:50:35,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:50:35,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:50:35,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:50:35,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:50:35,359 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:50:35,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:50:35,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:50:35,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:50:35,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:50:35,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:50:35,362 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:50:35,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:50:35,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:50:35,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:50:35,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:50:35,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:50:35,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:50:35,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:50:35,364 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:50:35,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:50:35,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:50:35,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:50:35,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:50:35,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:50:35,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:50:35,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:50:35,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:50:35,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:50:35,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:50:35,366 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:50:35,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:50:35,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:50:35,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:50:35,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b84718ab53315b4fb0ea63ba4ff58d4e41800b214902f4639c5f6698ca2778b0 [2021-11-06 14:50:35,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:50:35,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:50:35,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:50:35,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:50:35,664 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:50:35,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-06 14:50:35,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4e5e2e86/b131a872730741ba9b30e9481f90eb41/FLAG8f32c7f66 [2021-11-06 14:50:36,408 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:50:36,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-06 14:50:36,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4e5e2e86/b131a872730741ba9b30e9481f90eb41/FLAG8f32c7f66 [2021-11-06 14:50:36,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4e5e2e86/b131a872730741ba9b30e9481f90eb41 [2021-11-06 14:50:36,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:50:36,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:50:36,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:50:36,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:50:36,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:50:36,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:50:36" (1/1) ... [2021-11-06 14:50:36,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1d3547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:36, skipping insertion in model container [2021-11-06 14:50:36,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:50:36" (1/1) ... [2021-11-06 14:50:36,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:50:36,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:50:37,149 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-11-06 14:50:37,150 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-11-06 14:50:37,407 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-11-06 14:50:38,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:50:38,494 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:50:38,532 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1724] [2021-11-06 14:50:38,533 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1725-1726] [2021-11-06 14:50:38,539 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i[57371,57384] [2021-11-06 14:50:38,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:50:38,868 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:50:38,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38 WrapperNode [2021-11-06 14:50:38,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:50:38,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:50:38,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:50:38,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:50:38,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38" (1/1) ... [2021-11-06 14:50:38,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38" (1/1) ... [2021-11-06 14:50:42,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:50:42,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:50:42,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:50:42,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:50:42,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38" (1/1) ... [2021-11-06 14:50:42,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38" (1/1) ... [2021-11-06 14:50:43,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38" (1/1) ... [2021-11-06 14:50:43,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38" (1/1) ... [2021-11-06 14:50:44,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38" (1/1) ... [2021-11-06 14:50:45,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38" (1/1) ... [2021-11-06 14:50:45,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38" (1/1) ... [2021-11-06 14:50:46,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:50:46,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:50:46,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:50:46,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:50:46,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38" (1/1) ... [2021-11-06 14:50:46,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:50:46,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:50:46,113 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 14:50:46,139 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 14:50:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:50:46,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:50:46,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:50:46,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:50:46,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:50:46,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:50:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:50:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:50:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:50:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:50:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:50:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:50:46,160 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:50:46,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:50:46,160 INFO L130 BoogieDeclarations]: Found specification of procedure pch_vbus_gpio_work_fall [2021-11-06 14:50:46,160 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_vbus_gpio_work_fall [2021-11-06 14:50:46,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:50:46,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:50:46,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:51:48,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:51:48,566 INFO L299 CfgBuilder]: Removed 25657 assume(true) statements. [2021-11-06 14:51:48,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:51:48 BoogieIcfgContainer [2021-11-06 14:51:48,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:51:48,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:51:48,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:51:48,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:51:48,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:50:36" (1/3) ... [2021-11-06 14:51:48,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f413e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:51:48, skipping insertion in model container [2021-11-06 14:51:48,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:50:38" (2/3) ... [2021-11-06 14:51:48,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f413e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:51:48, skipping insertion in model container [2021-11-06 14:51:48,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:51:48" (3/3) ... [2021-11-06 14:51:48,590 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--gadget--pch_udc.ko-entry_point.cil.out.i [2021-11-06 14:51:48,594 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:51:48,595 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2021-11-06 14:51:48,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:51:48,701 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 14:51:48,702 INFO L340 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2021-11-06 14:51:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 16354 states, 16279 states have (on average 1.3000798574851036) internal successors, (21164), 16336 states have internal predecessors, (21164), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-06 14:51:48,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 14:51:48,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:48,939 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] [2021-11-06 14:51:48,939 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 14:51:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:48,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1183988152, now seen corresponding path program 1 times [2021-11-06 14:51:48,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:48,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836397404] [2021-11-06 14:51:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:48,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:49,790 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 14:51:49,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:49,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836397404] [2021-11-06 14:51:49,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836397404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:51:49,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:51:49,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:51:49,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416894978] [2021-11-06 14:51:49,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:51:49,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:49,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:51:49,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:51:49,868 INFO L87 Difference]: Start difference. First operand has 16354 states, 16279 states have (on average 1.3000798574851036) internal successors, (21164), 16336 states have internal predecessors, (21164), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 14:51:50,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:50,877 INFO L93 Difference]: Finished difference Result 48047 states and 62272 transitions. [2021-11-06 14:51:50,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:51:50,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-06 14:51:50,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:51,068 INFO L225 Difference]: With dead ends: 48047 [2021-11-06 14:51:51,068 INFO L226 Difference]: Without dead ends: 31308 [2021-11-06 14:51:51,144 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 14:51:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31308 states. [2021-11-06 14:51:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31308 to 31193. [2021-11-06 14:51:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31193 states, 31101 states have (on average 1.2749429278801325) internal successors, (39652), 31158 states have internal predecessors, (39652), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-06 14:51:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31193 states to 31193 states and 39716 transitions. [2021-11-06 14:51:52,373 INFO L78 Accepts]: Start accepts. Automaton has 31193 states and 39716 transitions. Word has length 23 [2021-11-06 14:51:52,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:52,374 INFO L470 AbstractCegarLoop]: Abstraction has 31193 states and 39716 transitions. [2021-11-06 14:51:52,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 14:51:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 31193 states and 39716 transitions. [2021-11-06 14:51:52,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 14:51:52,383 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:52,383 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] [2021-11-06 14:51:52,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:51:52,384 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 14:51:52,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:52,386 INFO L85 PathProgramCache]: Analyzing trace with hash 696380445, now seen corresponding path program 1 times [2021-11-06 14:51:52,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:52,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947685006] [2021-11-06 14:51:52,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:52,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:52,609 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 14:51:52,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:52,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947685006] [2021-11-06 14:51:52,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947685006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:51:52,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:51:52,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:51:52,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770466626] [2021-11-06 14:51:52,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:51:52,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:52,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:51:52,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:51:52,615 INFO L87 Difference]: Start difference. First operand 31193 states and 39716 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 14:51:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:54,194 INFO L93 Difference]: Finished difference Result 91959 states and 117028 transitions. [2021-11-06 14:51:54,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:51:54,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-06 14:51:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:54,408 INFO L225 Difference]: With dead ends: 91959 [2021-11-06 14:51:54,409 INFO L226 Difference]: Without dead ends: 60785 [2021-11-06 14:51:54,501 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 14:51:54,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60785 states. [2021-11-06 14:51:56,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60785 to 60664. [2021-11-06 14:51:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60664 states, 60536 states have (on average 1.274183956653892) internal successors, (77134), 60595 states have internal predecessors, (77134), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-06 14:51:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60664 states to 60664 states and 77262 transitions. [2021-11-06 14:51:56,355 INFO L78 Accepts]: Start accepts. Automaton has 60664 states and 77262 transitions. Word has length 23 [2021-11-06 14:51:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:56,356 INFO L470 AbstractCegarLoop]: Abstraction has 60664 states and 77262 transitions. [2021-11-06 14:51:56,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 14:51:56,359 INFO L276 IsEmpty]: Start isEmpty. Operand 60664 states and 77262 transitions. [2021-11-06 14:51:56,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 14:51:56,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:56,365 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:51:56,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:51:56,366 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 14:51:56,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1619446590, now seen corresponding path program 1 times [2021-11-06 14:51:56,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:56,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012831848] [2021-11-06 14:51:56,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:56,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:51:56,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:56,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012831848] [2021-11-06 14:51:56,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012831848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:51:56,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:51:56,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:51:56,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129527023] [2021-11-06 14:51:56,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:51:56,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:51:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:51:56,833 INFO L87 Difference]: Start difference. First operand 60664 states and 77262 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 14:51:58,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:51:58,249 INFO L93 Difference]: Finished difference Result 63939 states and 81512 transitions. [2021-11-06 14:51:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:51:58,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 47 [2021-11-06 14:51:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:51:58,458 INFO L225 Difference]: With dead ends: 63939 [2021-11-06 14:51:58,459 INFO L226 Difference]: Without dead ends: 63831 [2021-11-06 14:51:58,503 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 14:51:58,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63831 states. [2021-11-06 14:52:00,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63831 to 63831. [2021-11-06 14:52:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63831 states, 63751 states have (on average 1.2725447443961664) internal successors, (81126), 63762 states have internal predecessors, (81126), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-06 14:52:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63831 states to 63831 states and 81254 transitions. [2021-11-06 14:52:00,317 INFO L78 Accepts]: Start accepts. Automaton has 63831 states and 81254 transitions. Word has length 47 [2021-11-06 14:52:00,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:00,317 INFO L470 AbstractCegarLoop]: Abstraction has 63831 states and 81254 transitions. [2021-11-06 14:52:00,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 14:52:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand 63831 states and 81254 transitions. [2021-11-06 14:52:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 14:52:00,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:00,333 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:00,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:52:00,334 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 14:52:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash 227871648, now seen corresponding path program 1 times [2021-11-06 14:52:00,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:00,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610398301] [2021-11-06 14:52:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:00,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:52:00,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:00,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610398301] [2021-11-06 14:52:00,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610398301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:00,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:00,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:52:00,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281214984] [2021-11-06 14:52:00,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:52:00,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:00,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:52:00,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:52:00,539 INFO L87 Difference]: Start difference. First operand 63831 states and 81254 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 14:52:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:02,214 INFO L93 Difference]: Finished difference Result 127647 states and 162492 transitions. [2021-11-06 14:52:02,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:52:02,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 59 [2021-11-06 14:52:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:02,416 INFO L225 Difference]: With dead ends: 127647 [2021-11-06 14:52:02,416 INFO L226 Difference]: Without dead ends: 63835 [2021-11-06 14:52:02,534 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 14:52:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63835 states. [2021-11-06 14:52:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63835 to 63835. [2021-11-06 14:52:04,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63835 states, 63755 states have (on average 1.2725276448905969) internal successors, (81130), 63766 states have internal predecessors, (81130), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-06 14:52:04,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63835 states to 63835 states and 81258 transitions. [2021-11-06 14:52:04,303 INFO L78 Accepts]: Start accepts. Automaton has 63835 states and 81258 transitions. Word has length 59 [2021-11-06 14:52:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:04,305 INFO L470 AbstractCegarLoop]: Abstraction has 63835 states and 81258 transitions. [2021-11-06 14:52:04,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 14:52:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 63835 states and 81258 transitions. [2021-11-06 14:52:04,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 14:52:04,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:04,320 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:04,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:52:04,321 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 14:52:04,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:04,321 INFO L85 PathProgramCache]: Analyzing trace with hash -783245602, now seen corresponding path program 1 times [2021-11-06 14:52:04,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:04,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656308728] [2021-11-06 14:52:04,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:04,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:52:04,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:04,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656308728] [2021-11-06 14:52:04,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656308728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:04,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:04,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:52:04,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397175663] [2021-11-06 14:52:04,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:52:04,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:04,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:52:04,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:52:04,509 INFO L87 Difference]: Start difference. First operand 63835 states and 81258 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 14:52:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:06,238 INFO L93 Difference]: Finished difference Result 127655 states and 162500 transitions. [2021-11-06 14:52:06,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:52:06,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 59 [2021-11-06 14:52:06,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:06,425 INFO L225 Difference]: With dead ends: 127655 [2021-11-06 14:52:06,425 INFO L226 Difference]: Without dead ends: 63839 [2021-11-06 14:52:06,547 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 14:52:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63839 states. [2021-11-06 14:52:07,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63839 to 63839. [2021-11-06 14:52:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63839 states, 63759 states have (on average 1.2725105475305447) internal successors, (81134), 63770 states have internal predecessors, (81134), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-06 14:52:08,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63839 states to 63839 states and 81262 transitions. [2021-11-06 14:52:08,268 INFO L78 Accepts]: Start accepts. Automaton has 63839 states and 81262 transitions. Word has length 59 [2021-11-06 14:52:08,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:08,270 INFO L470 AbstractCegarLoop]: Abstraction has 63839 states and 81262 transitions. [2021-11-06 14:52:08,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 14:52:08,270 INFO L276 IsEmpty]: Start isEmpty. Operand 63839 states and 81262 transitions. [2021-11-06 14:52:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 14:52:08,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:08,291 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:08,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:52:08,296 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 14:52:08,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:08,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1592592228, now seen corresponding path program 1 times [2021-11-06 14:52:08,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:08,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537535087] [2021-11-06 14:52:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:08,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:52:08,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:08,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537535087] [2021-11-06 14:52:08,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537535087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:08,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:08,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:52:08,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076334680] [2021-11-06 14:52:08,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:52:08,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:08,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:52:08,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:52:08,507 INFO L87 Difference]: Start difference. First operand 63839 states and 81262 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 14:52:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:09,893 INFO L93 Difference]: Finished difference Result 127661 states and 162504 transitions. [2021-11-06 14:52:09,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:52:09,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 59 [2021-11-06 14:52:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:10,067 INFO L225 Difference]: With dead ends: 127661 [2021-11-06 14:52:10,067 INFO L226 Difference]: Without dead ends: 63841 [2021-11-06 14:52:10,238 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 14:52:10,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63841 states. [2021-11-06 14:52:11,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63841 to 63841. [2021-11-06 14:52:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63841 states, 63761 states have (on average 1.2725019996549616) internal successors, (81136), 63772 states have internal predecessors, (81136), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-06 14:52:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63841 states to 63841 states and 81264 transitions. [2021-11-06 14:52:11,935 INFO L78 Accepts]: Start accepts. Automaton has 63841 states and 81264 transitions. Word has length 59 [2021-11-06 14:52:11,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:11,936 INFO L470 AbstractCegarLoop]: Abstraction has 63841 states and 81264 transitions. [2021-11-06 14:52:11,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 14:52:11,936 INFO L276 IsEmpty]: Start isEmpty. Operand 63841 states and 81264 transitions. [2021-11-06 14:52:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 14:52:11,953 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:11,954 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:11,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:52:11,954 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 14:52:11,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:11,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1243341673, now seen corresponding path program 1 times [2021-11-06 14:52:11,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:11,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326305909] [2021-11-06 14:52:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:11,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:12,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:52:12,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:12,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326305909] [2021-11-06 14:52:12,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326305909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:12,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:12,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:52:12,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535414295] [2021-11-06 14:52:12,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:52:12,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:12,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:52:12,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:52:12,120 INFO L87 Difference]: Start difference. First operand 63841 states and 81264 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 14:52:13,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:13,909 INFO L93 Difference]: Finished difference Result 127675 states and 162520 transitions. [2021-11-06 14:52:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:52:13,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 61 [2021-11-06 14:52:13,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:14,041 INFO L225 Difference]: With dead ends: 127675 [2021-11-06 14:52:14,042 INFO L226 Difference]: Without dead ends: 63853 [2021-11-06 14:52:14,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:52:14,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63853 states. [2021-11-06 14:52:15,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63853 to 63849. [2021-11-06 14:52:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63849 states, 63769 states have (on average 1.2724678135144036) internal successors, (81144), 63780 states have internal predecessors, (81144), 64 states have call successors, (64), 8 states have call predecessors, (64), 8 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-06 14:52:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63849 states to 63849 states and 81272 transitions. [2021-11-06 14:52:15,495 INFO L78 Accepts]: Start accepts. Automaton has 63849 states and 81272 transitions. Word has length 61 [2021-11-06 14:52:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:15,495 INFO L470 AbstractCegarLoop]: Abstraction has 63849 states and 81272 transitions. [2021-11-06 14:52:15,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 14:52:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 63849 states and 81272 transitions. [2021-11-06 14:52:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 14:52:15,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:15,511 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:15,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:52:15,511 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 14:52:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:15,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1057480917, now seen corresponding path program 1 times [2021-11-06 14:52:15,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:15,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804269954] [2021-11-06 14:52:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:15,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:52:16,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:16,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804269954] [2021-11-06 14:52:16,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804269954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:16,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:16,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:52:16,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632511803] [2021-11-06 14:52:16,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:52:16,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:16,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:52:16,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:52:16,008 INFO L87 Difference]: Start difference. First operand 63849 states and 81272 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 14:52:20,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:52:20,060 INFO L93 Difference]: Finished difference Result 205450 states and 261460 transitions. [2021-11-06 14:52:20,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:52:20,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 61 [2021-11-06 14:52:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:52:20,464 INFO L225 Difference]: With dead ends: 205450 [2021-11-06 14:52:20,465 INFO L226 Difference]: Without dead ends: 141620 [2021-11-06 14:52:20,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:52:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141620 states. [2021-11-06 14:52:23,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141620 to 95905. [2021-11-06 14:52:23,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95905 states, 95789 states have (on average 1.2728183820689223) internal successors, (121922), 95802 states have internal predecessors, (121922), 96 states have call successors, (96), 12 states have call predecessors, (96), 12 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-06 14:52:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95905 states to 95905 states and 122114 transitions. [2021-11-06 14:52:23,424 INFO L78 Accepts]: Start accepts. Automaton has 95905 states and 122114 transitions. Word has length 61 [2021-11-06 14:52:23,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:52:23,424 INFO L470 AbstractCegarLoop]: Abstraction has 95905 states and 122114 transitions. [2021-11-06 14:52:23,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 14:52:23,425 INFO L276 IsEmpty]: Start isEmpty. Operand 95905 states and 122114 transitions. [2021-11-06 14:52:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 14:52:23,445 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:52:23,445 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:52:23,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:52:23,446 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 53 more)] === [2021-11-06 14:52:23,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:52:23,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1138607686, now seen corresponding path program 1 times [2021-11-06 14:52:23,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:52:23,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339304753] [2021-11-06 14:52:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:52:23,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:52:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:52:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:52:23,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:52:23,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339304753] [2021-11-06 14:52:23,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339304753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:52:23,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:52:23,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:52:23,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906967575] [2021-11-06 14:52:23,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:52:23,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:52:23,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:52:23,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:52:23,783 INFO L87 Difference]: Start difference. First operand 95905 states and 122114 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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)