./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.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 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:46:27,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:46:27,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:46:27,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:46:27,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:46:27,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:46:27,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:46:27,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:46:27,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:46:27,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:46:27,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:46:27,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:46:27,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:46:27,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:46:27,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:46:27,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:46:27,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:46:27,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:46:27,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:46:27,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:46:27,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:46:27,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:46:27,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:46:27,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:46:27,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:46:27,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:46:27,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:46:27,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:46:27,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:46:27,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:46:27,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:46:27,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:46:27,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:46:27,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:46:27,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:46:27,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:46:27,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:46:27,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:46:27,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:46:27,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:46:27,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:46:27,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:46:27,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:46:27,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:46:27,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:46:27,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:46:27,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:46:27,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:46:27,450 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:46:27,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:46:27,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:46:27,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:46:27,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:46:27,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:46:27,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:46:27,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:46:27,452 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:46:27,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:46:27,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:46:27,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:46:27,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:46:27,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:46:27,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:46:27,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:46:27,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:46:27,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:46:27,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:46:27,454 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:46:27,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:46:27,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:46:27,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:46:27,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5df375afe9fb68708289d9f3c6788a2547ede1538b0aa584ee561e48e9fb4c63 [2021-11-06 14:46:27,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:46:27,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:46:27,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:46:27,672 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:46:27,673 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:46:27,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-06 14:46:27,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b516b7388/2b2f0953096f4d538f4cedc346c5d578/FLAG7ba1e6ed6 [2021-11-06 14:46:28,501 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:46:28,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-06 14:46:28,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b516b7388/2b2f0953096f4d538f4cedc346c5d578/FLAG7ba1e6ed6 [2021-11-06 14:46:29,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b516b7388/2b2f0953096f4d538f4cedc346c5d578 [2021-11-06 14:46:29,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:46:29,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:46:29,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:46:29,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:46:29,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:46:29,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:46:29" (1/1) ... [2021-11-06 14:46:29,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fa06c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:29, skipping insertion in model container [2021-11-06 14:46:29,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:46:29" (1/1) ... [2021-11-06 14:46:29,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:46:29,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:46:30,280 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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-11-06 14:46:31,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:46:31,970 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:46:32,084 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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i[209494,209507] [2021-11-06 14:46:32,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:46:32,386 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:46:32,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32 WrapperNode [2021-11-06 14:46:32,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:46:32,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:46:32,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:46:32,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:46:32,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32" (1/1) ... [2021-11-06 14:46:32,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32" (1/1) ... [2021-11-06 14:46:36,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:46:36,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:46:36,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:46:36,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:46:36,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32" (1/1) ... [2021-11-06 14:46:36,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32" (1/1) ... [2021-11-06 14:46:37,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32" (1/1) ... [2021-11-06 14:46:37,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32" (1/1) ... [2021-11-06 14:46:39,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32" (1/1) ... [2021-11-06 14:46:39,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32" (1/1) ... [2021-11-06 14:46:39,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32" (1/1) ... [2021-11-06 14:46:40,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:46:40,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:46:40,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:46:40,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:46:40,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32" (1/1) ... [2021-11-06 14:46:40,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:46:40,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:46:40,594 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 14:46:40,596 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 14:46:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:46:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:46:40,620 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-06 14:46:40,620 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-06 14:46:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:46:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:46:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-06 14:46:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:46:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:46:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:46:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:46:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:46:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:46:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-06 14:46:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:46:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:46:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:46:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:46:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:46:40,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-06 14:46:40,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:46:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:47:34,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:47:34,118 INFO L299 CfgBuilder]: Removed 40139 assume(true) statements. [2021-11-06 14:47:34,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:47:34 BoogieIcfgContainer [2021-11-06 14:47:34,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:47:34,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:47:34,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:47:34,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:47:34,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:46:29" (1/3) ... [2021-11-06 14:47:34,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a5650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:47:34, skipping insertion in model container [2021-11-06 14:47:34,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:46:32" (2/3) ... [2021-11-06 14:47:34,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a5650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:47:34, skipping insertion in model container [2021-11-06 14:47:34,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:47:34" (3/3) ... [2021-11-06 14:47:34,167 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtl818x--rtl8180--rtl818x_pci.ko-entry_point.cil.out.i [2021-11-06 14:47:34,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:47:34,177 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-06 14:47:34,277 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:47:34,291 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 14:47:34,291 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-06 14:47:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 23220 states, 23212 states have (on average 1.2532741685335171) internal successors, (29091), 23214 states have internal predecessors, (29091), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-06 14:47:34,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 14:47:34,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:47:34,542 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] [2021-11-06 14:47:34,543 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:47:34,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:47:34,547 INFO L85 PathProgramCache]: Analyzing trace with hash 471113658, now seen corresponding path program 1 times [2021-11-06 14:47:34,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:47:34,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304006241] [2021-11-06 14:47:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:47:34,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:47:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:47:35,231 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 14:47:35,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:47:35,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304006241] [2021-11-06 14:47:35,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304006241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:47:35,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:47:35,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:47:35,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106579220] [2021-11-06 14:47:35,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:47:35,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:47:35,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:47:35,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:47:35,285 INFO L87 Difference]: Start difference. First operand has 23220 states, 23212 states have (on average 1.2532741685335171) internal successors, (29091), 23214 states have internal predecessors, (29091), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 14:47:38,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:47:38,693 INFO L93 Difference]: Finished difference Result 68612 states and 85908 transitions. [2021-11-06 14:47:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:47:38,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2021-11-06 14:47:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:47:39,075 INFO L225 Difference]: With dead ends: 68612 [2021-11-06 14:47:39,075 INFO L226 Difference]: Without dead ends: 45241 [2021-11-06 14:47:39,161 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 14:47:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45241 states. [2021-11-06 14:47:40,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45241 to 45241. [2021-11-06 14:47:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45241 states, 45228 states have (on average 1.233085699124436) internal successors, (55770), 45230 states have internal predecessors, (55770), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-06 14:47:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45241 states to 45241 states and 55786 transitions. [2021-11-06 14:47:40,556 INFO L78 Accepts]: Start accepts. Automaton has 45241 states and 55786 transitions. Word has length 39 [2021-11-06 14:47:40,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:47:40,556 INFO L470 AbstractCegarLoop]: Abstraction has 45241 states and 55786 transitions. [2021-11-06 14:47:40,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 14:47:40,557 INFO L276 IsEmpty]: Start isEmpty. Operand 45241 states and 55786 transitions. [2021-11-06 14:47:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 14:47:40,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:47:40,562 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] [2021-11-06 14:47:40,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:47:40,563 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:47:40,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:47:40,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1996872438, now seen corresponding path program 1 times [2021-11-06 14:47:40,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:47:40,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843205741] [2021-11-06 14:47:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:47:40,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:47:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:47:40,892 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 14:47:40,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:47:40,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843205741] [2021-11-06 14:47:40,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843205741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:47:40,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:47:40,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:47:40,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425913379] [2021-11-06 14:47:40,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:47:40,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:47:40,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:47:40,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:47:40,896 INFO L87 Difference]: Start difference. First operand 45241 states and 55786 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 14:47:44,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:47:44,173 INFO L93 Difference]: Finished difference Result 135637 states and 167271 transitions. [2021-11-06 14:47:44,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:47:44,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2021-11-06 14:47:44,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:47:44,494 INFO L225 Difference]: With dead ends: 135637 [2021-11-06 14:47:44,495 INFO L226 Difference]: Without dead ends: 90434 [2021-11-06 14:47:44,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 14:47:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90434 states. [2021-11-06 14:47:46,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90434 to 90306. [2021-11-06 14:47:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90306 states, 90281 states have (on average 1.2321861742780873) internal successors, (111243), 90285 states have internal predecessors, (111243), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (24), 16 states have call predecessors, (24), 16 states have call successors, (24) [2021-11-06 14:47:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90306 states to 90306 states and 111283 transitions. [2021-11-06 14:47:46,999 INFO L78 Accepts]: Start accepts. Automaton has 90306 states and 111283 transitions. Word has length 43 [2021-11-06 14:47:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:47:47,000 INFO L470 AbstractCegarLoop]: Abstraction has 90306 states and 111283 transitions. [2021-11-06 14:47:47,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 14:47:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 90306 states and 111283 transitions. [2021-11-06 14:47:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 14:47:47,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:47:47,032 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:47:47,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:47:47,032 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:47:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:47:47,038 INFO L85 PathProgramCache]: Analyzing trace with hash 72115487, now seen corresponding path program 1 times [2021-11-06 14:47:47,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:47:47,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134284879] [2021-11-06 14:47:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:47:47,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:47:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:47:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:47:47,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:47:47,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134284879] [2021-11-06 14:47:47,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134284879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:47:47,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:47:47,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:47:47,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138586946] [2021-11-06 14:47:47,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:47:47,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:47:47,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:47:47,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:47:47,294 INFO L87 Difference]: Start difference. First operand 90306 states and 111283 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 14:47:53,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:47:53,145 INFO L93 Difference]: Finished difference Result 381830 states and 471451 transitions. [2021-11-06 14:47:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:47:53,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 90 [2021-11-06 14:47:53,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:47:54,396 INFO L225 Difference]: With dead ends: 381830 [2021-11-06 14:47:54,396 INFO L226 Difference]: Without dead ends: 291566 [2021-11-06 14:47:54,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 14:47:55,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291566 states. [2021-11-06 14:48:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291566 to 176992. [2021-11-06 14:48:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176992 states, 176943 states have (on average 1.2293563463940365) internal successors, (217526), 176951 states have internal predecessors, (217526), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (72), 32 states have call predecessors, (72), 32 states have call successors, (72) [2021-11-06 14:48:00,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176992 states to 176992 states and 217630 transitions. [2021-11-06 14:48:00,842 INFO L78 Accepts]: Start accepts. Automaton has 176992 states and 217630 transitions. Word has length 90 [2021-11-06 14:48:00,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:48:00,844 INFO L470 AbstractCegarLoop]: Abstraction has 176992 states and 217630 transitions. [2021-11-06 14:48:00,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 14:48:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 176992 states and 217630 transitions. [2021-11-06 14:48:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 14:48:00,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:48:00,888 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:00,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:48:00,889 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:48:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:48:00,890 INFO L85 PathProgramCache]: Analyzing trace with hash 820102842, now seen corresponding path program 1 times [2021-11-06 14:48:00,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:48:00,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602425154] [2021-11-06 14:48:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:48:00,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:48:01,400 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 14:48:01,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945182318] [2021-11-06 14:48:01,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:48:01,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:48:01,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:48:01,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:48:01,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:48:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:48:03,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 4556 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 14:48:03,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:48:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 14:48:03,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:48:03,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602425154] [2021-11-06 14:48:03,415 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 14:48:03,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945182318] [2021-11-06 14:48:03,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945182318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:48:03,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:48:03,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:48:03,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400714998] [2021-11-06 14:48:03,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:48:03,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:48:03,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:48:03,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:48:03,417 INFO L87 Difference]: Start difference. First operand 176992 states and 217630 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 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)