/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 01:18:06,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 01:18:06,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 01:18:06,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 01:18:06,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 01:18:06,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 01:18:06,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 01:18:06,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 01:18:06,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 01:18:06,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 01:18:06,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 01:18:06,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 01:18:06,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 01:18:06,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 01:18:06,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 01:18:06,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 01:18:06,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 01:18:06,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 01:18:06,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 01:18:06,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 01:18:06,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 01:18:06,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 01:18:06,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 01:18:06,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 01:18:06,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 01:18:06,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 01:18:06,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 01:18:06,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 01:18:06,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 01:18:06,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 01:18:06,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 01:18:06,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 01:18:06,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 01:18:06,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 01:18:06,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 01:18:06,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 01:18:06,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 01:18:06,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 01:18:06,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 01:18:06,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 01:18:06,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 01:18:06,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 01:18:06,766 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 01:18:06,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 01:18:06,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 01:18:06,768 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 01:18:06,768 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 01:18:06,768 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 01:18:06,768 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 01:18:06,769 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 01:18:06,771 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 01:18:06,772 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 01:18:06,772 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 01:18:06,772 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 01:18:06,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 01:18:06,772 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 01:18:06,773 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 01:18:06,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 01:18:06,774 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 01:18:06,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 01:18:06,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 01:18:06,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 01:18:06,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 01:18:06,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 01:18:06,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 01:18:06,776 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 01:18:06,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 01:18:06,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 01:18:06,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 01:18:06,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 01:18:06,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 01:18:06,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 01:18:06,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 01:18:06,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 01:18:06,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 01:18:06,779 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 01:18:06,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 01:18:06,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 01:18:06,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 01:18:06,781 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 01:18:07,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 01:18:07,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 01:18:07,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 01:18:07,141 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 01:18:07,141 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 01:18:07,142 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2019-11-24 01:18:07,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39bb4aee2/2cdfe0195fe54e179795dcd5467cb9d8/FLAG753047d07 [2019-11-24 01:18:07,979 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 01:18:07,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2019-11-24 01:18:08,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39bb4aee2/2cdfe0195fe54e179795dcd5467cb9d8/FLAG753047d07 [2019-11-24 01:18:08,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39bb4aee2/2cdfe0195fe54e179795dcd5467cb9d8 [2019-11-24 01:18:08,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 01:18:08,067 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 01:18:08,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 01:18:08,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 01:18:08,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 01:18:08,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:18:08" (1/1) ... [2019-11-24 01:18:08,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51459f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:08, skipping insertion in model container [2019-11-24 01:18:08,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:18:08" (1/1) ... [2019-11-24 01:18:08,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 01:18:08,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 01:18:09,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:18:09,945 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 01:18:10,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:18:10,479 INFO L208 MainTranslator]: Completed translation [2019-11-24 01:18:10,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10 WrapperNode [2019-11-24 01:18:10,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 01:18:10,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 01:18:10,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 01:18:10,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 01:18:10,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2019-11-24 01:18:10,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2019-11-24 01:18:10,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 01:18:10,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 01:18:10,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 01:18:10,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 01:18:10,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2019-11-24 01:18:10,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2019-11-24 01:18:10,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2019-11-24 01:18:10,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2019-11-24 01:18:10,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2019-11-24 01:18:10,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2019-11-24 01:18:11,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (1/1) ... [2019-11-24 01:18:11,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 01:18:11,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 01:18:11,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 01:18:11,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 01:18:11,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (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 [2019-11-24 01:18:11,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 01:18:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2019-11-24 01:18:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2019-11-24 01:18:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 01:18:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 01:18:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 01:18:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2019-11-24 01:18:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2019-11-24 01:18:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 01:18:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 01:18:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 01:18:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 01:18:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-24 01:18:11,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-24 01:18:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 01:18:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 01:18:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 01:18:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 01:18:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 01:18:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 01:18:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 01:18:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_read_int_callback [2019-11-24 01:18:11,145 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_read_int_callback [2019-11-24 01:18:43,023 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 01:18:43,024 INFO L284 CfgBuilder]: Removed 699 assume(true) statements. [2019-11-24 01:18:43,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:18:43 BoogieIcfgContainer [2019-11-24 01:18:43,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 01:18:43,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 01:18:43,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 01:18:43,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 01:18:43,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:18:08" (1/3) ... [2019-11-24 01:18:43,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ecb7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:18:43, skipping insertion in model container [2019-11-24 01:18:43,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:18:10" (2/3) ... [2019-11-24 01:18:43,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ecb7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:18:43, skipping insertion in model container [2019-11-24 01:18:43,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:18:43" (3/3) ... [2019-11-24 01:18:43,035 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2019-11-24 01:18:43,043 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 01:18:43,050 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-24 01:18:43,062 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-24 01:18:43,086 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 01:18:43,086 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 01:18:43,086 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 01:18:43,086 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 01:18:43,087 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 01:18:43,087 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 01:18:43,087 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 01:18:43,087 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 01:18:43,110 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2019-11-24 01:18:43,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-24 01:18:43,117 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:18:43,118 INFO L410 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] [2019-11-24 01:18:43,119 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:18:43,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:18:43,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1173625602, now seen corresponding path program 1 times [2019-11-24 01:18:43,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:18:43,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809716430] [2019-11-24 01:18:43,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:18:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:18:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:18:43,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809716430] [2019-11-24 01:18:43,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:18:43,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:18:43,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912623247] [2019-11-24 01:18:43,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:18:43,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:18:43,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:18:43,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:43,787 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2019-11-24 01:18:44,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:18:44,498 INFO L93 Difference]: Finished difference Result 443 states and 737 transitions. [2019-11-24 01:18:44,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:18:44,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-11-24 01:18:44,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:18:44,535 INFO L225 Difference]: With dead ends: 443 [2019-11-24 01:18:44,535 INFO L226 Difference]: Without dead ends: 276 [2019-11-24 01:18:44,542 INFO L630 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 [2019-11-24 01:18:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2019-11-24 01:18:44,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2019-11-24 01:18:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2019-11-24 01:18:44,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 451 transitions. [2019-11-24 01:18:44,662 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 451 transitions. Word has length 22 [2019-11-24 01:18:44,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:18:44,663 INFO L462 AbstractCegarLoop]: Abstraction has 276 states and 451 transitions. [2019-11-24 01:18:44,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:18:44,663 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 451 transitions. [2019-11-24 01:18:44,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-24 01:18:44,666 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:18:44,666 INFO L410 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] [2019-11-24 01:18:44,667 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:18:44,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:18:44,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1416137636, now seen corresponding path program 1 times [2019-11-24 01:18:44,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:18:44,668 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523420798] [2019-11-24 01:18:44,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:18:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:18:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:18:45,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523420798] [2019-11-24 01:18:45,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:18:45,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 01:18:45,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135139866] [2019-11-24 01:18:45,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:18:45,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:18:45,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:18:45,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:45,034 INFO L87 Difference]: Start difference. First operand 276 states and 451 transitions. Second operand 3 states. [2019-11-24 01:18:47,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:18:47,449 INFO L93 Difference]: Finished difference Result 521 states and 848 transitions. [2019-11-24 01:18:47,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:18:47,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-11-24 01:18:47,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:18:47,457 INFO L225 Difference]: With dead ends: 521 [2019-11-24 01:18:47,458 INFO L226 Difference]: Without dead ends: 519 [2019-11-24 01:18:47,459 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:47,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2019-11-24 01:18:47,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 507. [2019-11-24 01:18:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2019-11-24 01:18:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 835 transitions. [2019-11-24 01:18:47,504 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 835 transitions. Word has length 26 [2019-11-24 01:18:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:18:47,504 INFO L462 AbstractCegarLoop]: Abstraction has 507 states and 835 transitions. [2019-11-24 01:18:47,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:18:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 835 transitions. [2019-11-24 01:18:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-24 01:18:47,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:18:47,506 INFO L410 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] [2019-11-24 01:18:47,506 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:18:47,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:18:47,507 INFO L82 PathProgramCache]: Analyzing trace with hash 950594345, now seen corresponding path program 1 times [2019-11-24 01:18:47,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:18:47,507 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207790270] [2019-11-24 01:18:47,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:18:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:18:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:18:47,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207790270] [2019-11-24 01:18:47,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:18:47,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 01:18:47,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269369479] [2019-11-24 01:18:47,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:18:47,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:18:47,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:18:47,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:47,699 INFO L87 Difference]: Start difference. First operand 507 states and 835 transitions. Second operand 3 states. [2019-11-24 01:18:50,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:18:50,507 INFO L93 Difference]: Finished difference Result 746 states and 1224 transitions. [2019-11-24 01:18:50,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:18:50,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-11-24 01:18:50,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:18:50,516 INFO L225 Difference]: With dead ends: 746 [2019-11-24 01:18:50,517 INFO L226 Difference]: Without dead ends: 744 [2019-11-24 01:18:50,518 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:50,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2019-11-24 01:18:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 735. [2019-11-24 01:18:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2019-11-24 01:18:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1214 transitions. [2019-11-24 01:18:50,564 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1214 transitions. Word has length 27 [2019-11-24 01:18:50,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:18:50,565 INFO L462 AbstractCegarLoop]: Abstraction has 735 states and 1214 transitions. [2019-11-24 01:18:50,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:18:50,565 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1214 transitions. [2019-11-24 01:18:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-24 01:18:50,567 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:18:50,567 INFO L410 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] [2019-11-24 01:18:50,568 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:18:50,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:18:50,568 INFO L82 PathProgramCache]: Analyzing trace with hash -596345778, now seen corresponding path program 1 times [2019-11-24 01:18:50,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:18:50,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884694371] [2019-11-24 01:18:50,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:18:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:18:50,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:18:50,698 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884694371] [2019-11-24 01:18:50,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:18:50,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 01:18:50,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640372290] [2019-11-24 01:18:50,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:18:50,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:18:50,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:18:50,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:50,699 INFO L87 Difference]: Start difference. First operand 735 states and 1214 transitions. Second operand 3 states. [2019-11-24 01:18:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:18:55,342 INFO L93 Difference]: Finished difference Result 966 states and 1610 transitions. [2019-11-24 01:18:55,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:18:55,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-24 01:18:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:18:55,353 INFO L225 Difference]: With dead ends: 966 [2019-11-24 01:18:55,354 INFO L226 Difference]: Without dead ends: 964 [2019-11-24 01:18:55,356 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:55,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2019-11-24 01:18:55,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 964. [2019-11-24 01:18:55,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 964 states. [2019-11-24 01:18:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1608 transitions. [2019-11-24 01:18:55,426 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1608 transitions. Word has length 28 [2019-11-24 01:18:55,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:18:55,428 INFO L462 AbstractCegarLoop]: Abstraction has 964 states and 1608 transitions. [2019-11-24 01:18:55,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:18:55,429 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1608 transitions. [2019-11-24 01:18:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-24 01:18:55,430 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:18:55,431 INFO L410 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] [2019-11-24 01:18:55,431 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:18:55,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:18:55,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1306849325, now seen corresponding path program 1 times [2019-11-24 01:18:55,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:18:55,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162322126] [2019-11-24 01:18:55,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:18:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:18:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:18:55,562 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162322126] [2019-11-24 01:18:55,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:18:55,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 01:18:55,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985834365] [2019-11-24 01:18:55,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:18:55,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:18:55,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:18:55,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:55,564 INFO L87 Difference]: Start difference. First operand 964 states and 1608 transitions. Second operand 3 states. [2019-11-24 01:18:55,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:18:55,605 INFO L93 Difference]: Finished difference Result 964 states and 1608 transitions. [2019-11-24 01:18:55,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:18:55,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-11-24 01:18:55,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:18:55,612 INFO L225 Difference]: With dead ends: 964 [2019-11-24 01:18:55,612 INFO L226 Difference]: Without dead ends: 962 [2019-11-24 01:18:55,613 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:55,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2019-11-24 01:18:55,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 962. [2019-11-24 01:18:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2019-11-24 01:18:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1606 transitions. [2019-11-24 01:18:55,666 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1606 transitions. Word has length 29 [2019-11-24 01:18:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:18:55,666 INFO L462 AbstractCegarLoop]: Abstraction has 962 states and 1606 transitions. [2019-11-24 01:18:55,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:18:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1606 transitions. [2019-11-24 01:18:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-24 01:18:55,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:18:55,668 INFO L410 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] [2019-11-24 01:18:55,669 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:18:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:18:55,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1857622792, now seen corresponding path program 1 times [2019-11-24 01:18:55,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:18:55,808 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645724267] [2019-11-24 01:18:55,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:18:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:18:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:18:55,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645724267] [2019-11-24 01:18:55,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:18:55,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 01:18:55,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447981914] [2019-11-24 01:18:55,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:18:55,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:18:55,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:18:55,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:55,924 INFO L87 Difference]: Start difference. First operand 962 states and 1606 transitions. Second operand 3 states. [2019-11-24 01:18:55,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:18:55,972 INFO L93 Difference]: Finished difference Result 962 states and 1606 transitions. [2019-11-24 01:18:55,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:18:55,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-11-24 01:18:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:18:55,992 INFO L225 Difference]: With dead ends: 962 [2019-11-24 01:18:55,993 INFO L226 Difference]: Without dead ends: 953 [2019-11-24 01:18:55,994 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:55,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2019-11-24 01:18:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 953. [2019-11-24 01:18:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2019-11-24 01:18:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1593 transitions. [2019-11-24 01:18:56,070 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1593 transitions. Word has length 30 [2019-11-24 01:18:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:18:56,071 INFO L462 AbstractCegarLoop]: Abstraction has 953 states and 1593 transitions. [2019-11-24 01:18:56,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:18:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1593 transitions. [2019-11-24 01:18:56,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-24 01:18:56,074 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:18:56,074 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-24 01:18:56,075 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:18:56,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:18:56,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1823117730, now seen corresponding path program 1 times [2019-11-24 01:18:56,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:18:56,076 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058363258] [2019-11-24 01:18:56,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:18:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:18:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:18:56,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058363258] [2019-11-24 01:18:56,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:18:56,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:18:56,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184186001] [2019-11-24 01:18:56,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:18:56,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:18:56,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:18:56,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:18:56,266 INFO L87 Difference]: Start difference. First operand 953 states and 1593 transitions. Second operand 3 states. [2019-11-24 01:18:58,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:18:58,505 INFO L93 Difference]: Finished difference Result 2323 states and 3931 transitions. [2019-11-24 01:18:58,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:18:58,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2019-11-24 01:18:58,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:18:58,515 INFO L225 Difference]: With dead ends: 2323 [2019-11-24 01:18:58,516 INFO L226 Difference]: Without dead ends: 1387 [2019-11-24 01:18:58,520 INFO L630 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 [2019-11-24 01:18:58,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2019-11-24 01:18:58,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1369. [2019-11-24 01:18:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1369 states. [2019-11-24 01:18:58,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2338 transitions. [2019-11-24 01:18:58,610 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2338 transitions. Word has length 35 [2019-11-24 01:18:58,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:18:58,611 INFO L462 AbstractCegarLoop]: Abstraction has 1369 states and 2338 transitions. [2019-11-24 01:18:58,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:18:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2338 transitions. [2019-11-24 01:18:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-24 01:18:58,613 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:18:58,614 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-11-24 01:18:58,614 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:18:58,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:18:58,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1793861268, now seen corresponding path program 1 times [2019-11-24 01:18:58,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:18:58,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884941066] [2019-11-24 01:18:58,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:18:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:18:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-24 01:18:59,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884941066] [2019-11-24 01:18:59,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528460830] [2019-11-24 01:18:59,478 INFO L94 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 [2019-11-24 01:19:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:19:00,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 01:19:00,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 01:19:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-24 01:19:00,535 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 01:19:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-24 01:19:00,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 01:19:00,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2019-11-24 01:19:00,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636570457] [2019-11-24 01:19:00,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 01:19:00,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:19:00,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 01:19:00,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-24 01:19:00,564 INFO L87 Difference]: Start difference. First operand 1369 states and 2338 transitions. Second operand 4 states. [2019-11-24 01:19:00,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:19:00,690 INFO L93 Difference]: Finished difference Result 2723 states and 4652 transitions. [2019-11-24 01:19:00,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 01:19:00,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2019-11-24 01:19:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:19:00,699 INFO L225 Difference]: With dead ends: 2723 [2019-11-24 01:19:00,699 INFO L226 Difference]: Without dead ends: 1371 [2019-11-24 01:19:00,703 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-24 01:19:00,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2019-11-24 01:19:00,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1371. [2019-11-24 01:19:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2019-11-24 01:19:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 2340 transitions. [2019-11-24 01:19:00,805 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 2340 transitions. Word has length 49 [2019-11-24 01:19:00,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:19:00,805 INFO L462 AbstractCegarLoop]: Abstraction has 1371 states and 2340 transitions. [2019-11-24 01:19:00,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 01:19:00,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 2340 transitions. [2019-11-24 01:19:00,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-24 01:19:00,809 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:19:00,809 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-11-24 01:19:01,019 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:19:01,020 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:19:01,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:19:01,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1101703316, now seen corresponding path program 1 times [2019-11-24 01:19:01,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:19:01,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204949694] [2019-11-24 01:19:01,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:19:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:19:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-24 01:19:01,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204949694] [2019-11-24 01:19:01,789 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626169989] [2019-11-24 01:19:01,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-24 01:19:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:19:02,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-24 01:19:02,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 01:19:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-24 01:19:02,917 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 01:19:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-11-24 01:19:02,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1630008669] [2019-11-24 01:19:03,036 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2019-11-24 01:19:03,039 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 01:19:03,046 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 01:19:03,054 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 01:19:03,055 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 01:19:32,219 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= (select (select |#memory_$Pointer$.base| |~#gigaset_usb_driver~0.base|) |~#gigaset_usb_driver~0.offset|) |#t~string224.base|)