./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:52:36,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:52:36,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:52:36,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:52:36,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:52:36,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:52:36,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:52:36,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:52:36,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:52:36,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:52:36,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:52:36,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:52:36,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:52:36,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:52:36,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:52:36,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:52:36,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:52:36,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:52:36,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:52:36,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:52:36,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:52:36,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:52:36,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:52:36,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:52:36,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:52:36,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:52:36,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:52:36,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:52:36,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:52:36,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:52:36,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:52:36,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:52:36,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:52:36,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:52:36,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:52:36,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:52:36,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:52:36,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:52:36,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:52:36,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:52:36,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:52:36,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:52:36,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:52:36,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:52:36,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:52:36,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:52:36,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:52:36,788 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:52:36,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:52:36,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:52:36,789 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:52:36,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:52:36,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:52:36,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:52:36,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:52:36,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:52:36,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:52:36,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:52:36,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:52:36,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:52:36,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:52:36,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:52:36,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:52:36,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:52:36,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:52:36,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:52:36,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:52:36,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:52:36,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:52:36,792 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:52:36,793 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:52:36,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:52:36,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:52:36,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2021-12-21 16:52:36,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:52:36,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:52:36,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:52:36,993 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:52:36,994 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:52:36,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-12-21 16:52:37,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90a032fee/88888951674d4a6a8b99d83847f8ffec/FLAGf52d74e80 [2021-12-21 16:52:37,660 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:52:37,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-12-21 16:52:37,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90a032fee/88888951674d4a6a8b99d83847f8ffec/FLAGf52d74e80 [2021-12-21 16:52:38,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90a032fee/88888951674d4a6a8b99d83847f8ffec [2021-12-21 16:52:38,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:52:38,088 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:52:38,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:52:38,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:52:38,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:52:38,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:52:38" (1/1) ... [2021-12-21 16:52:38,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12514165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:38, skipping insertion in model container [2021-12-21 16:52:38,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:52:38" (1/1) ... [2021-12-21 16:52:38,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:52:38,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:52:39,512 WARN L230 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-12-21 16:52:39,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:52:39,581 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:52:39,846 WARN L230 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-12-21 16:52:39,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:52:39,888 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:52:39,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39 WrapperNode [2021-12-21 16:52:39,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:52:39,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:52:39,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:52:39,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:52:39,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39" (1/1) ... [2021-12-21 16:52:39,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39" (1/1) ... [2021-12-21 16:52:40,112 INFO L137 Inliner]: procedures = 191, calls = 3778, calls flagged for inlining = 80, calls inlined = 67, statements flattened = 6858 [2021-12-21 16:52:40,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:52:40,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:52:40,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:52:40,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:52:40,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39" (1/1) ... [2021-12-21 16:52:40,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39" (1/1) ... [2021-12-21 16:52:40,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39" (1/1) ... [2021-12-21 16:52:40,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39" (1/1) ... [2021-12-21 16:52:40,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39" (1/1) ... [2021-12-21 16:52:40,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39" (1/1) ... [2021-12-21 16:52:40,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39" (1/1) ... [2021-12-21 16:52:40,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:52:40,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:52:40,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:52:40,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:52:40,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39" (1/1) ... [2021-12-21 16:52:40,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:52:40,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:52:40,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 16:52:40,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 16:52:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_probe [2021-12-21 16:52:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_probe [2021-12-21 16:52:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:52:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_reg_sync [2021-12-21 16:52:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_reg_sync [2021-12-21 16:52:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-21 16:52:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-21 16:52:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_reg_sync [2021-12-21 16:52:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_reg_sync [2021-12-21 16:52:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:52:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:52:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:52:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:52:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:52:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 16:52:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 16:52:40,409 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write [2021-12-21 16:52:40,409 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write [2021-12-21 16:52:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-21 16:52:40,433 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-21 16:52:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_ioctl [2021-12-21 16:52:40,433 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_ioctl [2021-12-21 16:52:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_tiocmiwait [2021-12-21 16:52:40,433 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_tiocmiwait [2021-12-21 16:52:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-21 16:52:40,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-21 16:52:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2021-12-21 16:52:40,433 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2021-12-21 16:52:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 16:52:40,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 16:52:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:52:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:52:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_port_private [2021-12-21 16:52:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_port_private [2021-12-21 16:52:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-21 16:52:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-21 16:52:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-21 16:52:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-21 16:52:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-12-21 16:52:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-12-21 16:52:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_uart_reg [2021-12-21 16:52:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_uart_reg [2021-12-21 16:52:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-12-21 16:52:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-12-21 16:52:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:52:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:52:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-21 16:52:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-21 16:52:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_usb_serial [2021-12-21 16:52:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_usb_serial [2021-12-21 16:52:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_get_icount [2021-12-21 16:52:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_get_icount [2021-12-21 16:52:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:52:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_async [2021-12-21 16:52:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_async [2021-12-21 16:52:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-21 16:52:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-21 16:52:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-21 16:52:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-21 16:52:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:52:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:52:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_termios [2021-12-21 16:52:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_termios [2021-12-21 16:52:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:52:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:52:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_sync [2021-12-21 16:52:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_sync [2021-12-21 16:52:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_3 [2021-12-21 16:52:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_3 [2021-12-21 16:52:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 16:52:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 16:52:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-21 16:52:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-21 16:52:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:52:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:52:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_chars_in_buffer [2021-12-21 16:52:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_chars_in_buffer [2021-12-21 16:52:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:52:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-21 16:52:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-21 16:52:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_throttle [2021-12-21 16:52:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_throttle [2021-12-21 16:52:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-21 16:52:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-21 16:52:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:52:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2021-12-21 16:52:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2021-12-21 16:52:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-12-21 16:52:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-12-21 16:52:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:52:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:52:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-21 16:52:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-21 16:52:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit_lock [2021-12-21 16:52:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit_lock [2021-12-21 16:52:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_uart_reg [2021-12-21 16:52:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_uart_reg [2021-12-21 16:52:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:52:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-21 16:52:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-21 16:52:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-21 16:52:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-21 16:52:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-21 16:52:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-21 16:52:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-21 16:52:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-21 16:52:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_paranoia_check [2021-12-21 16:52:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_paranoia_check [2021-12-21 16:52:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_serial_paranoia_check [2021-12-21 16:52:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_serial_paranoia_check [2021-12-21 16:52:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 16:52:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 16:52:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_led_activity [2021-12-21 16:52:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_led_activity [2021-12-21 16:52:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_bulk_in_callback [2021-12-21 16:52:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_bulk_in_callback [2021-12-21 16:52:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write_room [2021-12-21 16:52:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write_room [2021-12-21 16:52:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:52:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:52:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_calc_num_ports [2021-12-21 16:52:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_calc_num_ports [2021-12-21 16:52:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_break [2021-12-21 16:52:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_break [2021-12-21 16:52:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmset [2021-12-21 16:52:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmset [2021-12-21 16:52:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmget [2021-12-21 16:52:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmget [2021-12-21 16:52:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-21 16:52:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-21 16:52:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_port_private [2021-12-21 16:52:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_port_private [2021-12-21 16:52:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_unthrottle [2021-12-21 16:52:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_unthrottle [2021-12-21 16:52:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:52:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:52:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:52:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-21 16:52:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-21 16:52:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-21 16:52:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-21 16:52:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_remove [2021-12-21 16:52:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_remove [2021-12-21 16:52:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:52:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:52:40,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:52:41,000 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:52:41,002 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:52:42,373 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:52:46,377 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:52:46,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:52:46,402 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:52:46,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:52:46 BoogieIcfgContainer [2021-12-21 16:52:46,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:52:46,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:52:46,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:52:46,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:52:46,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:52:38" (1/3) ... [2021-12-21 16:52:46,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fd3cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:52:46, skipping insertion in model container [2021-12-21 16:52:46,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:52:39" (2/3) ... [2021-12-21 16:52:46,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28fd3cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:52:46, skipping insertion in model container [2021-12-21 16:52:46,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:52:46" (3/3) ... [2021-12-21 16:52:46,413 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-12-21 16:52:46,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:52:46,418 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:52:46,470 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:52:46,476 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 16:52:46,476 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:52:46,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 1732 states, 1231 states have (on average 1.3899268887083671) internal successors, (1711), 1254 states have internal predecessors, (1711), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) [2021-12-21 16:52:46,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-21 16:52:46,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:52:46,536 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:52:46,536 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:52:46,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:52:46,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2101310704, now seen corresponding path program 1 times [2021-12-21 16:52:46,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:52:46,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739696543] [2021-12-21 16:52:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:52:46,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:52:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:52:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:52:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:52:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:52:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:52:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 16:52:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 16:52:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 16:52:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 16:52:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 16:52:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 16:52:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-21 16:52:47,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:52:47,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739696543] [2021-12-21 16:52:47,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739696543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:52:47,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:52:47,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:52:47,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813074254] [2021-12-21 16:52:47,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:52:47,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:52:47,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:52:47,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:52:47,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:52:47,452 INFO L87 Difference]: Start difference. First operand has 1732 states, 1231 states have (on average 1.3899268887083671) internal successors, (1711), 1254 states have internal predecessors, (1711), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 16:52:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:52:58,011 INFO L93 Difference]: Finished difference Result 3655 states and 5610 transitions. [2021-12-21 16:52:58,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 16:52:58,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 161 [2021-12-21 16:52:58,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:52:58,041 INFO L225 Difference]: With dead ends: 3655 [2021-12-21 16:52:58,041 INFO L226 Difference]: Without dead ends: 1913 [2021-12-21 16:52:58,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:52:58,058 INFO L933 BasicCegarLoop]: 2443 mSDtfsCounter, 517 mSDsluCounter, 3633 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 6076 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-12-21 16:52:58,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 6076 Invalid, 3455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 2447 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2021-12-21 16:52:58,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2021-12-21 16:52:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1717. [2021-12-21 16:52:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1223 states have (on average 1.3851185609157808) internal successors, (1694), 1239 states have internal predecessors, (1694), 430 states have call successors, (430), 64 states have call predecessors, (430), 63 states have return successors, (429), 423 states have call predecessors, (429), 429 states have call successors, (429) [2021-12-21 16:52:58,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2553 transitions. [2021-12-21 16:52:58,209 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2553 transitions. Word has length 161 [2021-12-21 16:52:58,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:52:58,210 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 2553 transitions. [2021-12-21 16:52:58,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 16:52:58,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2553 transitions. [2021-12-21 16:52:58,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-21 16:52:58,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:52:58,236 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:52:58,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:52:58,237 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:52:58,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:52:58,238 INFO L85 PathProgramCache]: Analyzing trace with hash 146485736, now seen corresponding path program 1 times [2021-12-21 16:52:58,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:52:58,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076297017] [2021-12-21 16:52:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:52:58,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:52:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:52:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:52:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:52:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:52:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:52:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:52:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 16:52:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 16:52:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 16:52:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 16:52:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 16:52:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 16:52:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:52:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:52:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-21 16:52:58,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:52:58,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076297017] [2021-12-21 16:52:58,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076297017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:52:58,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:52:58,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:52:58,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455703966] [2021-12-21 16:52:58,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:52:58,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:52:58,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:52:58,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:52:58,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:52:58,807 INFO L87 Difference]: Start difference. First operand 1717 states and 2553 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 16:53:04,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:53:04,770 INFO L93 Difference]: Finished difference Result 3744 states and 5632 transitions. [2021-12-21 16:53:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:53:04,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 161 [2021-12-21 16:53:04,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:53:04,795 INFO L225 Difference]: With dead ends: 3744 [2021-12-21 16:53:04,795 INFO L226 Difference]: Without dead ends: 2059 [2021-12-21 16:53:04,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:53:04,805 INFO L933 BasicCegarLoop]: 2456 mSDtfsCounter, 1210 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 1629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 5896 SdHoareTripleChecker+Invalid, 3199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1629 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:53:04,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1253 Valid, 5896 Invalid, 3199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1629 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-12-21 16:53:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2021-12-21 16:53:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1853. [2021-12-21 16:53:04,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1325 states have (on average 1.3864150943396227) internal successors, (1837), 1350 states have internal predecessors, (1837), 449 states have call successors, (449), 79 states have call predecessors, (449), 78 states have return successors, (448), 436 states have call predecessors, (448), 448 states have call successors, (448) [2021-12-21 16:53:04,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2734 transitions. [2021-12-21 16:53:04,968 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2734 transitions. Word has length 161 [2021-12-21 16:53:04,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:53:04,970 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 2734 transitions. [2021-12-21 16:53:04,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 16:53:04,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2734 transitions. [2021-12-21 16:53:04,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-21 16:53:04,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:53:04,973 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:53:04,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:53:04,974 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:53:04,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:53:04,974 INFO L85 PathProgramCache]: Analyzing trace with hash 189098090, now seen corresponding path program 1 times [2021-12-21 16:53:04,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:53:04,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062682498] [2021-12-21 16:53:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:53:04,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:53:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:53:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:53:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:53:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:53:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:53:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 16:53:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 16:53:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 16:53:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 16:53:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 16:53:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 16:53:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 16:53:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 16:53:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-21 16:53:05,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:53:05,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062682498] [2021-12-21 16:53:05,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062682498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:53:05,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:53:05,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 16:53:05,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857053886] [2021-12-21 16:53:05,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:53:05,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:53:05,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:53:05,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:53:05,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:53:05,459 INFO L87 Difference]: Start difference. First operand 1853 states and 2734 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 16:53:22,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:53:22,523 INFO L93 Difference]: Finished difference Result 9819 states and 15076 transitions. [2021-12-21 16:53:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 16:53:22,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 170 [2021-12-21 16:53:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:53:22,566 INFO L225 Difference]: With dead ends: 9819 [2021-12-21 16:53:22,567 INFO L226 Difference]: Without dead ends: 8016 [2021-12-21 16:53:22,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-12-21 16:53:22,583 INFO L933 BasicCegarLoop]: 3600 mSDtfsCounter, 12035 mSDsluCounter, 8104 mSDsCounter, 0 mSdLazyCounter, 6719 mSolverCounterSat, 5840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12917 SdHoareTripleChecker+Valid, 11704 SdHoareTripleChecker+Invalid, 12559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5840 IncrementalHoareTripleChecker+Valid, 6719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:53:22,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12917 Valid, 11704 Invalid, 12559 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5840 Valid, 6719 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time] [2021-12-21 16:53:22,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8016 states. [2021-12-21 16:53:22,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8016 to 7271. [2021-12-21 16:53:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7271 states, 5220 states have (on average 1.389272030651341) internal successors, (7252), 5317 states have internal predecessors, (7252), 1745 states have call successors, (1745), 296 states have call predecessors, (1745), 305 states have return successors, (1903), 1705 states have call predecessors, (1903), 1744 states have call successors, (1903) [2021-12-21 16:53:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7271 states to 7271 states and 10900 transitions. [2021-12-21 16:53:22,880 INFO L78 Accepts]: Start accepts. Automaton has 7271 states and 10900 transitions. Word has length 170 [2021-12-21 16:53:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:53:22,881 INFO L470 AbstractCegarLoop]: Abstraction has 7271 states and 10900 transitions. [2021-12-21 16:53:22,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 16:53:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 7271 states and 10900 transitions. [2021-12-21 16:53:22,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-21 16:53:22,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:53:22,885 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:53:22,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:53:22,885 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:53:22,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:53:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1930991079, now seen corresponding path program 1 times [2021-12-21 16:53:22,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:53:22,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607345514] [2021-12-21 16:53:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:53:22,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:53:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:53:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:53:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 16:53:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 16:53:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:53:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:53:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 16:53:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 16:53:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 16:53:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 16:53:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 16:53:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 16:53:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:53:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 16:53:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-21 16:53:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:53:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-21 16:53:23,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:53:23,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607345514] [2021-12-21 16:53:23,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607345514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:53:23,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:53:23,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 16:53:23,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689849600] [2021-12-21 16:53:23,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:53:23,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:53:23,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:53:23,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:53:23,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:53:23,323 INFO L87 Difference]: Start difference. First operand 7271 states and 10900 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)