/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -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 -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:24:36,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:24:36,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:24:36,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:24:36,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:24:36,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:24:36,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:24:36,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:24:36,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:24:36,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:24:36,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:24:36,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:24:36,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:24:36,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:24:36,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:24:36,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:24:36,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:24:36,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:24:36,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:24:36,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:24:36,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:24:36,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:24:36,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:24:36,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:24:36,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:24:36,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:24:36,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:24:36,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:24:36,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:24:36,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:24:36,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:24:36,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:24:36,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:24:36,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:24:36,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:24:36,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:24:36,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:24:36,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:24:36,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:24:36,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:24:36,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:24:36,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:24:36,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:24:36,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:24:36,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:24:36,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:24:36,268 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:24:36,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:24:36,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:24:36,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:24:36,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:24:36,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:24:36,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:24:36,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:24:36,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:24:36,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:24:36,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:24:36,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:24:36,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:24:36,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:24:36,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:24:36,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:24:36,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:24:36,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:24:36,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:24:36,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:24:36,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:24:36,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:24:36,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:24:36,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:24:36,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:24:36,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:24:36,715 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:24:36,716 INFO L432 ainManager$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 [2020-12-22 13:24:36,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c0dd2db2/7d3d823093324cff9069496579908d1a/FLAGc5af91804 [2020-12-22 13:24:38,061 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:24:38,062 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 [2020-12-22 13:24:38,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c0dd2db2/7d3d823093324cff9069496579908d1a/FLAGc5af91804 [2020-12-22 13:24:38,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c0dd2db2/7d3d823093324cff9069496579908d1a [2020-12-22 13:24:38,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:24:38,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:24:38,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:24:38,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:24:38,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:24:38,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:24:38" (1/1) ... [2020-12-22 13:24:38,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1449c6ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:38, skipping insertion in model container [2020-12-22 13:24:38,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:24:38" (1/1) ... [2020-12-22 13:24:38,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:24:38,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:24:40,167 WARN L226 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] [2020-12-22 13:24:42,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:24:42,486 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:24:42,694 WARN L226 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] [2020-12-22 13:24:43,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:24:43,782 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:24:43,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43 WrapperNode [2020-12-22 13:24:43,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:24:43,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:24:43,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:24:43,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:24:43,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43" (1/1) ... [2020-12-22 13:24:43,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43" (1/1) ... [2020-12-22 13:24:50,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:24:50,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:24:50,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:24:50,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:24:50,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43" (1/1) ... [2020-12-22 13:24:50,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43" (1/1) ... [2020-12-22 13:24:52,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43" (1/1) ... [2020-12-22 13:24:52,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43" (1/1) ... [2020-12-22 13:24:55,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43" (1/1) ... [2020-12-22 13:24:56,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43" (1/1) ... [2020-12-22 13:24:56,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43" (1/1) ... [2020-12-22 13:24:57,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:24:57,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:24:57,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:24:57,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:24:57,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:24:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:24:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:24:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2020-12-22 13:24:57,876 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2020-12-22 13:24:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:24:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:24:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2020-12-22 13:24:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:24:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:24:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:24:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:24:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:24:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:24:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2020-12-22 13:24:57,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:24:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:24:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:24:57,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:24:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:24:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2020-12-22 13:24:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:24:57,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:26:37,778 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:26:37,779 INFO L299 CfgBuilder]: Removed 40139 assume(true) statements. [2020-12-22 13:26:37,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:26:37 BoogieIcfgContainer [2020-12-22 13:26:37,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:26:37,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:26:37,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:26:37,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:26:37,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:24:38" (1/3) ... [2020-12-22 13:26:37,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345250a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:26:37, skipping insertion in model container [2020-12-22 13:26:37,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:24:43" (2/3) ... [2020-12-22 13:26:37,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345250a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:26:37, skipping insertion in model container [2020-12-22 13:26:37,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:26:37" (3/3) ... [2020-12-22 13:26:37,822 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 [2020-12-22 13:26:37,828 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:26:37,840 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 13:26:37,859 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 13:26:37,982 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:26:37,982 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:26:37,982 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:26:37,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:26:37,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:26:37,983 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:26:37,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:26:37,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:26:38,324 INFO L276 IsEmpty]: Start isEmpty. Operand 23220 states. [2020-12-22 13:26:38,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 13:26:38,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:38,367 INFO L422 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] [2020-12-22 13:26:38,367 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:38,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:38,379 INFO L82 PathProgramCache]: Analyzing trace with hash 471113658, now seen corresponding path program 1 times [2020-12-22 13:26:38,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:38,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424078285] [2020-12-22 13:26:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:26:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:26:39,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424078285] [2020-12-22 13:26:39,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:26:39,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:26:39,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858300794] [2020-12-22 13:26:39,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:26:39,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:26:39,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:26:39,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:26:39,466 INFO L87 Difference]: Start difference. First operand 23220 states. Second operand 3 states. [2020-12-22 13:26:41,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:41,608 INFO L93 Difference]: Finished difference Result 45968 states and 57573 transitions. [2020-12-22 13:26:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:26:41,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 13:26:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:41,795 INFO L225 Difference]: With dead ends: 45968 [2020-12-22 13:26:41,796 INFO L226 Difference]: Without dead ends: 22673 [2020-12-22 13:26:41,906 INFO L677 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 [2020-12-22 13:26:42,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22673 states. [2020-12-22 13:26:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22673 to 22673. [2020-12-22 13:26:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22673 states. [2020-12-22 13:26:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22673 states to 22673 states and 27956 transitions. [2020-12-22 13:26:43,123 INFO L78 Accepts]: Start accepts. Automaton has 22673 states and 27956 transitions. Word has length 39 [2020-12-22 13:26:43,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:26:43,124 INFO L481 AbstractCegarLoop]: Abstraction has 22673 states and 27956 transitions. [2020-12-22 13:26:43,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:26:43,125 INFO L276 IsEmpty]: Start isEmpty. Operand 22673 states and 27956 transitions. [2020-12-22 13:26:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 13:26:43,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:43,129 INFO L422 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] [2020-12-22 13:26:43,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:26:43,129 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:43,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:43,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1578521326, now seen corresponding path program 1 times [2020-12-22 13:26:43,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:43,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671256004] [2020-12-22 13:26:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:26:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:26:43,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671256004] [2020-12-22 13:26:43,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:26:43,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:26:43,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112978820] [2020-12-22 13:26:43,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:26:43,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:26:43,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:26:43,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:26:43,531 INFO L87 Difference]: Start difference. First operand 22673 states and 27956 transitions. Second operand 3 states. [2020-12-22 13:26:45,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:45,054 INFO L93 Difference]: Finished difference Result 45305 states and 55863 transitions. [2020-12-22 13:26:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:26:45,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 13:26:45,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:45,168 INFO L225 Difference]: With dead ends: 45305 [2020-12-22 13:26:45,168 INFO L226 Difference]: Without dead ends: 22674 [2020-12-22 13:26:45,249 INFO L677 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 [2020-12-22 13:26:45,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22674 states. [2020-12-22 13:26:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22674 to 22674. [2020-12-22 13:26:46,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22674 states. [2020-12-22 13:26:46,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22674 states to 22674 states and 27957 transitions. [2020-12-22 13:26:46,127 INFO L78 Accepts]: Start accepts. Automaton has 22674 states and 27957 transitions. Word has length 40 [2020-12-22 13:26:46,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:26:46,128 INFO L481 AbstractCegarLoop]: Abstraction has 22674 states and 27957 transitions. [2020-12-22 13:26:46,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:26:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 22674 states and 27957 transitions. [2020-12-22 13:26:46,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 13:26:46,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:46,134 INFO L422 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] [2020-12-22 13:26:46,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:26:46,135 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:46,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:46,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1433876354, now seen corresponding path program 1 times [2020-12-22 13:26:46,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:46,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046586479] [2020-12-22 13:26:46,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:26:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:26:46,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046586479] [2020-12-22 13:26:46,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:26:46,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:26:46,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249232611] [2020-12-22 13:26:46,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:26:46,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:26:46,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:26:46,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:26:46,961 INFO L87 Difference]: Start difference. First operand 22674 states and 27957 transitions. Second operand 3 states. [2020-12-22 13:26:50,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:50,821 INFO L93 Difference]: Finished difference Result 67873 states and 83695 transitions. [2020-12-22 13:26:50,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:26:50,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 13:26:50,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:50,986 INFO L225 Difference]: With dead ends: 67873 [2020-12-22 13:26:50,987 INFO L226 Difference]: Without dead ends: 45243 [2020-12-22 13:26:51,063 INFO L677 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 [2020-12-22 13:26:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45243 states. [2020-12-22 13:26:52,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45243 to 45243. [2020-12-22 13:26:52,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45243 states. [2020-12-22 13:26:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45243 states to 45243 states and 55788 transitions. [2020-12-22 13:26:52,695 INFO L78 Accepts]: Start accepts. Automaton has 45243 states and 55788 transitions. Word has length 41 [2020-12-22 13:26:52,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:26:52,696 INFO L481 AbstractCegarLoop]: Abstraction has 45243 states and 55788 transitions. [2020-12-22 13:26:52,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:26:52,697 INFO L276 IsEmpty]: Start isEmpty. Operand 45243 states and 55788 transitions. [2020-12-22 13:26:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 13:26:52,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:26:52,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:26:52,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:26:52,702 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:26:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:26:52,704 INFO L82 PathProgramCache]: Analyzing trace with hash -68924466, now seen corresponding path program 1 times [2020-12-22 13:26:52,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:26:52,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74034441] [2020-12-22 13:26:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:26:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:26:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 13:26:53,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74034441] [2020-12-22 13:26:53,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:26:53,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:26:53,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731439957] [2020-12-22 13:26:53,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:26:53,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:26:53,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:26:53,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:26:53,594 INFO L87 Difference]: Start difference. First operand 45243 states and 55788 transitions. Second operand 5 states. [2020-12-22 13:26:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:26:58,952 INFO L93 Difference]: Finished difference Result 135639 states and 167273 transitions. [2020-12-22 13:26:58,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:26:58,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-12-22 13:26:58,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:26:59,464 INFO L225 Difference]: With dead ends: 135639 [2020-12-22 13:26:59,464 INFO L226 Difference]: Without dead ends: 90436 [2020-12-22 13:26:59,581 INFO L677 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 [2020-12-22 13:26:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90436 states. [2020-12-22 13:27:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90436 to 90308. [2020-12-22 13:27:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90308 states. [2020-12-22 13:27:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90308 states to 90308 states and 111285 transitions. [2020-12-22 13:27:03,285 INFO L78 Accepts]: Start accepts. Automaton has 90308 states and 111285 transitions. Word has length 45 [2020-12-22 13:27:03,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:03,288 INFO L481 AbstractCegarLoop]: Abstraction has 90308 states and 111285 transitions. [2020-12-22 13:27:03,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:27:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 90308 states and 111285 transitions. [2020-12-22 13:27:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 13:27:03,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:03,333 INFO L422 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, 1] [2020-12-22 13:27:03,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:27:03,334 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:03,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:03,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1689424421, now seen corresponding path program 1 times [2020-12-22 13:27:03,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:03,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939615115] [2020-12-22 13:27:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:03,553 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:27:03,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53586592] [2020-12-22 13:27:03,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:27:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:27:06,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 4566 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:27:06,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:27:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:27:07,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939615115] [2020-12-22 13:27:07,177 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:27:07,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53586592] [2020-12-22 13:27:07,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:27:07,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 13:27:07,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515811476] [2020-12-22 13:27:07,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:27:07,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:07,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:27:07,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:27:07,182 INFO L87 Difference]: Start difference. First operand 90308 states and 111285 transitions. Second operand 4 states. [2020-12-22 13:27:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:11,241 INFO L93 Difference]: Finished difference Result 180802 states and 222974 transitions. [2020-12-22 13:27:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:27:11,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-12-22 13:27:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:11,707 INFO L225 Difference]: With dead ends: 180802 [2020-12-22 13:27:11,707 INFO L226 Difference]: Without dead ends: 90534 [2020-12-22 13:27:11,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:27:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90534 states. [2020-12-22 13:27:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90534 to 90534. [2020-12-22 13:27:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90534 states. [2020-12-22 13:27:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90534 states to 90534 states and 111511 transitions. [2020-12-22 13:27:16,230 INFO L78 Accepts]: Start accepts. Automaton has 90534 states and 111511 transitions. Word has length 92 [2020-12-22 13:27:16,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:27:16,232 INFO L481 AbstractCegarLoop]: Abstraction has 90534 states and 111511 transitions. [2020-12-22 13:27:16,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:27:16,232 INFO L276 IsEmpty]: Start isEmpty. Operand 90534 states and 111511 transitions. [2020-12-22 13:27:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 13:27:16,269 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:27:16,270 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-12-22 13:27:16,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:27:16,485 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:27:16,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:27:16,487 INFO L82 PathProgramCache]: Analyzing trace with hash -649165153, now seen corresponding path program 2 times [2020-12-22 13:27:16,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:27:16,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298608236] [2020-12-22 13:27:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:27:16,693 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 13:27:16,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012509264] [2020-12-22 13:27:16,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:27:48,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:27:48,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:27:48,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 4578 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:27:48,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:27:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 13:27:48,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298608236] [2020-12-22 13:27:48,684 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 13:27:48,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012509264] [2020-12-22 13:27:48,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:27:48,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 13:27:48,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250758294] [2020-12-22 13:27:48,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:27:48,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:27:48,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:27:48,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:27:48,687 INFO L87 Difference]: Start difference. First operand 90534 states and 111511 transitions. Second operand 5 states. [2020-12-22 13:27:51,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:27:51,844 INFO L93 Difference]: Finished difference Result 181141 states and 223201 transitions. [2020-12-22 13:27:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:27:51,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-12-22 13:27:51,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:27:52,142 INFO L225 Difference]: With dead ends: 181141 [2020-12-22 13:27:52,143 INFO L226 Difference]: Without dead ends: 90648