./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--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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--net--ethernet--icplus--ipg.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 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:17:15,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:17:15,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:17:15,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:17:15,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:17:15,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:17:15,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:17:15,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:17:15,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:17:15,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:17:15,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:17:15,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:17:15,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:17:15,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:17:15,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:17:15,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:17:15,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:17:15,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:17:15,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:17:15,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:17:15,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:17:15,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:17:15,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:17:15,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:17:15,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:17:15,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:17:15,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:17:15,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:17:15,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:17:15,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:17:15,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:17:15,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:17:15,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:17:15,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:17:15,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:17:15,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:17:15,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:17:15,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:17:15,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:17:15,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:17:15,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:17:15,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:17:15,657 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:17:15,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:17:15,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:17:15,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:17:15,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:17:15,659 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:17:15,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:17:15,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:17:15,660 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:17:15,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:17:15,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:17:15,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:17:15,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:17:15,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:17:15,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:17:15,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:17:15,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:17:15,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:17:15,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:17:15,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:17:15,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:17:15,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:17:15,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:17:15,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:17:15,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:17:15,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:17:15,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:17:15,663 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:17:15,664 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:17:15,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:17:15,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:17:15,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2021-12-14 18:17:15,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:17:15,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:17:15,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:17:15,853 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:17:15,853 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:17:15,854 INFO L432 ainManager$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--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-14 18:17:15,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74131b586/bb139b7e778f4c65928f47c7ec0c9310/FLAG255146bc8 [2021-12-14 18:17:16,467 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:17:16,467 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--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-14 18:17:16,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74131b586/bb139b7e778f4c65928f47c7ec0c9310/FLAG255146bc8 [2021-12-14 18:17:16,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74131b586/bb139b7e778f4c65928f47c7ec0c9310 [2021-12-14 18:17:16,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:17:16,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:17:16,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:17:16,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:17:16,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:17:16,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:17:16" (1/1) ... [2021-12-14 18:17:16,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@127a0655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:16, skipping insertion in model container [2021-12-14 18:17:16,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:17:16" (1/1) ... [2021-12-14 18:17:16,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:17:16,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:17:18,108 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--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-12-14 18:17:18,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:17:18,175 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:17:18,382 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--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-12-14 18:17:18,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:17:18,500 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:17:18,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18 WrapperNode [2021-12-14 18:17:18,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:17:18,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:17:18,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:17:18,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:17:18,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18" (1/1) ... [2021-12-14 18:17:18,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18" (1/1) ... [2021-12-14 18:17:18,693 INFO L137 Inliner]: procedures = 262, calls = 1347, calls flagged for inlining = 121, calls inlined = 116, statements flattened = 3303 [2021-12-14 18:17:18,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:17:18,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:17:18,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:17:18,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:17:18,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18" (1/1) ... [2021-12-14 18:17:18,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18" (1/1) ... [2021-12-14 18:17:18,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18" (1/1) ... [2021-12-14 18:17:18,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18" (1/1) ... [2021-12-14 18:17:18,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18" (1/1) ... [2021-12-14 18:17:18,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18" (1/1) ... [2021-12-14 18:17:18,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18" (1/1) ... [2021-12-14 18:17:18,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:17:18,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:17:18,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:17:18,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:17:18,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18" (1/1) ... [2021-12-14 18:17:18,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:17:18,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:17:18,858 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) [2021-12-14 18:17:18,860 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 [2021-12-14 18:17:18,886 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2021-12-14 18:17:18,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2021-12-14 18:17:18,887 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-12-14 18:17:18,887 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-12-14 18:17:18,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:17:18,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:17:18,887 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-14 18:17:18,888 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-14 18:17:18,888 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2021-12-14 18:17:18,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2021-12-14 18:17:18,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:17:18,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:17:18,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:17:18,888 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:17:18,888 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset_after_host_error [2021-12-14 18:17:18,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset_after_host_error [2021-12-14 18:17:18,889 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-14 18:17:18,889 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-14 18:17:18,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 18:17:18,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 18:17:18,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:17:18,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:17:18,889 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-14 18:17:18,890 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-14 18:17:18,890 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2021-12-14 18:17:18,890 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2021-12-14 18:17:18,890 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 18:17:18,890 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 18:17:18,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:17:18,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:17:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-12-14 18:17:18,891 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-12-14 18:17:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-14 18:17:18,891 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-14 18:17:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2021-12-14 18:17:18,891 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2021-12-14 18:17:18,891 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 18:17:18,892 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 18:17:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-12-14 18:17:18,892 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-12-14 18:17:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2021-12-14 18:17:18,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2021-12-14 18:17:18,892 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-12-14 18:17:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-12-14 18:17:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:17:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:17:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-14 18:17:18,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-14 18:17:18,893 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-14 18:17:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-14 18:17:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-12-14 18:17:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-12-14 18:17:18,894 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2021-12-14 18:17:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2021-12-14 18:17:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2021-12-14 18:17:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2021-12-14 18:17:18,895 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-12-14 18:17:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-12-14 18:17:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:17:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-14 18:17:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-14 18:17:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-14 18:17:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-14 18:17:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-12-14 18:17:18,897 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-12-14 18:17:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:17:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-14 18:17:18,898 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-14 18:17:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-14 18:17:18,898 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-14 18:17:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-12-14 18:17:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-12-14 18:17:18,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 18:17:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 18:17:18,899 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2021-12-14 18:17:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2021-12-14 18:17:18,899 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-14 18:17:18,899 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-14 18:17:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2021-12-14 18:17:18,900 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2021-12-14 18:17:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:17:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:17:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2021-12-14 18:17:18,900 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2021-12-14 18:17:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-14 18:17:18,900 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-14 18:17:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-14 18:17:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-14 18:17:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-14 18:17:18,901 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-14 18:17:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:17:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-12-14 18:17:18,902 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-12-14 18:17:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 18:17:18,902 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 18:17:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2021-12-14 18:17:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2021-12-14 18:17:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2021-12-14 18:17:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2021-12-14 18:17:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2021-12-14 18:17:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2021-12-14 18:17:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:17:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioctl [2021-12-14 18:17:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioctl [2021-12-14 18:17:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-14 18:17:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-14 18:17:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:17:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-14 18:17:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-14 18:17:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 18:17:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 18:17:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 18:17:18,905 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 18:17:18,905 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-14 18:17:18,906 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-14 18:17:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 18:17:18,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 18:17:18,906 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-12-14 18:17:18,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-12-14 18:17:18,908 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-14 18:17:18,909 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-14 18:17:18,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:17:18,909 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-14 18:17:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-14 18:17:18,910 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-14 18:17:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-14 18:17:18,910 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-12-14 18:17:18,910 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-12-14 18:17:18,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:17:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:17:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2021-12-14 18:17:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2021-12-14 18:17:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:17:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:17:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2021-12-14 18:17:18,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2021-12-14 18:17:18,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:17:18,916 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2021-12-14 18:17:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2021-12-14 18:17:18,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:17:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:17:18,916 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2021-12-14 18:17:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2021-12-14 18:17:18,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:17:18,916 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 18:17:18,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 18:17:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:17:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 18:17:18,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 18:17:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-12-14 18:17:18,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-12-14 18:17:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2021-12-14 18:17:18,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2021-12-14 18:17:18,917 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-12-14 18:17:18,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-12-14 18:17:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2021-12-14 18:17:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2021-12-14 18:17:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-14 18:17:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-14 18:17:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-14 18:17:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-14 18:17:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2021-12-14 18:17:18,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2021-12-14 18:17:18,918 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-14 18:17:18,919 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-14 18:17:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2021-12-14 18:17:18,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2021-12-14 18:17:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-12-14 18:17:18,919 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-12-14 18:17:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_change_mtu [2021-12-14 18:17:18,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_change_mtu [2021-12-14 18:17:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-14 18:17:18,919 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-14 18:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2021-12-14 18:17:18,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2021-12-14 18:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2021-12-14 18:17:18,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2021-12-14 18:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-12-14 18:17:18,920 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-12-14 18:17:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:17:18,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:17:19,470 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:17:19,472 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:17:19,969 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:17:21,669 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:17:21,680 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:17:21,680 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 18:17:21,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:17:21 BoogieIcfgContainer [2021-12-14 18:17:21,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:17:21,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:17:21,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:17:21,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:17:21,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:17:16" (1/3) ... [2021-12-14 18:17:21,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e264d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:17:21, skipping insertion in model container [2021-12-14 18:17:21,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:18" (2/3) ... [2021-12-14 18:17:21,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e264d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:17:21, skipping insertion in model container [2021-12-14 18:17:21,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:17:21" (3/3) ... [2021-12-14 18:17:21,688 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-14 18:17:21,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:17:21,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:17:21,724 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:17:21,729 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 [2021-12-14 18:17:21,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:17:21,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) [2021-12-14 18:17:21,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-14 18:17:21,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:17:21,787 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:17:21,788 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:17:21,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:17:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1357410998, now seen corresponding path program 1 times [2021-12-14 18:17:21,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:17:21,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181002926] [2021-12-14 18:17:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:21,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:17:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:17:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:17:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:17:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:17:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:17:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:17:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 18:17:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 18:17:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 18:17:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-14 18:17:22,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:17:22,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181002926] [2021-12-14 18:17:22,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181002926] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:17:22,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:17:22,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:17:22,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287527264] [2021-12-14 18:17:22,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:17:22,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:17:22,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:17:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:17:22,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:17:22,465 INFO L87 Difference]: Start difference. First operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:17:26,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:17:26,964 INFO L93 Difference]: Finished difference Result 2992 states and 4288 transitions. [2021-12-14 18:17:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:17:26,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2021-12-14 18:17:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:17:26,989 INFO L225 Difference]: With dead ends: 2992 [2021-12-14 18:17:26,989 INFO L226 Difference]: Without dead ends: 1590 [2021-12-14 18:17:27,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:17:27,007 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1036 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 1084 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1084 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-14 18:17:27,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 3224 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1084 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-14 18:17:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-12-14 18:17:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1359. [2021-12-14 18:17:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 923 states have (on average 1.2838569880823403) internal successors, (1185), 945 states have internal predecessors, (1185), 354 states have call successors, (354), 82 states have call predecessors, (354), 81 states have return successors, (353), 353 states have call predecessors, (353), 353 states have call successors, (353) [2021-12-14 18:17:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1892 transitions. [2021-12-14 18:17:27,104 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1892 transitions. Word has length 121 [2021-12-14 18:17:27,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:17:27,104 INFO L470 AbstractCegarLoop]: Abstraction has 1359 states and 1892 transitions. [2021-12-14 18:17:27,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 18:17:27,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1892 transitions. [2021-12-14 18:17:27,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-14 18:17:27,109 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:17:27,109 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:17:27,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:17:27,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:17:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:17:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash -874608722, now seen corresponding path program 1 times [2021-12-14 18:17:27,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:17:27,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344107328] [2021-12-14 18:17:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:27,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:17:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:17:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:17:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:17:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:17:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:17:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:17:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-14 18:17:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 18:17:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 18:17:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-14 18:17:27,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:17:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344107328] [2021-12-14 18:17:27,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344107328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:17:27,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:17:27,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 18:17:27,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120612500] [2021-12-14 18:17:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:17:27,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 18:17:27,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:17:27,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 18:17:27,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:17:27,353 INFO L87 Difference]: Start difference. First operand 1359 states and 1892 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 18:17:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:17:36,999 INFO L93 Difference]: Finished difference Result 4502 states and 6412 transitions. [2021-12-14 18:17:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 18:17:36,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 121 [2021-12-14 18:17:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:17:37,015 INFO L225 Difference]: With dead ends: 4502 [2021-12-14 18:17:37,015 INFO L226 Difference]: Without dead ends: 3164 [2021-12-14 18:17:37,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-14 18:17:37,026 INFO L933 BasicCegarLoop]: 2042 mSDtfsCounter, 3668 mSDsluCounter, 6500 mSDsCounter, 0 mSdLazyCounter, 3797 mSolverCounterSat, 2424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3884 SdHoareTripleChecker+Valid, 8542 SdHoareTripleChecker+Invalid, 6221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2424 IncrementalHoareTripleChecker+Valid, 3797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-12-14 18:17:37,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3884 Valid, 8542 Invalid, 6221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2424 Valid, 3797 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2021-12-14 18:17:37,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2021-12-14 18:17:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2724. [2021-12-14 18:17:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 1851 states have (on average 1.283090221501891) internal successors, (2375), 1897 states have internal predecessors, (2375), 706 states have call successors, (706), 163 states have call predecessors, (706), 166 states have return successors, (727), 707 states have call predecessors, (727), 705 states have call successors, (727) [2021-12-14 18:17:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3808 transitions. [2021-12-14 18:17:37,162 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3808 transitions. Word has length 121 [2021-12-14 18:17:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:17:37,164 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3808 transitions. [2021-12-14 18:17:37,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 18:17:37,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3808 transitions. [2021-12-14 18:17:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-14 18:17:37,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:17:37,170 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:17:37,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:17:37,170 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:17:37,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:17:37,170 INFO L85 PathProgramCache]: Analyzing trace with hash -967648419, now seen corresponding path program 1 times [2021-12-14 18:17:37,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:17:37,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673406623] [2021-12-14 18:17:37,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:37,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:17:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:17:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:17:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:17:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:17:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:17:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:17:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:17:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 18:17:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 18:17:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-14 18:17:37,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:17:37,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673406623] [2021-12-14 18:17:37,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673406623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:17:37,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:17:37,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 18:17:37,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466614830] [2021-12-14 18:17:37,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:17:37,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 18:17:37,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:17:37,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 18:17:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:17:37,461 INFO L87 Difference]: Start difference. First operand 2724 states and 3808 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 18:17:44,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:17:44,046 INFO L93 Difference]: Finished difference Result 9009 states and 12892 transitions. [2021-12-14 18:17:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 18:17:44,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 122 [2021-12-14 18:17:44,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:17:44,078 INFO L225 Difference]: With dead ends: 9009 [2021-12-14 18:17:44,078 INFO L226 Difference]: Without dead ends: 6306 [2021-12-14 18:17:44,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-14 18:17:44,091 INFO L933 BasicCegarLoop]: 1972 mSDtfsCounter, 4797 mSDsluCounter, 5633 mSDsCounter, 0 mSdLazyCounter, 2984 mSolverCounterSat, 3532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5013 SdHoareTripleChecker+Valid, 7605 SdHoareTripleChecker+Invalid, 6516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3532 IncrementalHoareTripleChecker+Valid, 2984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-14 18:17:44,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5013 Valid, 7605 Invalid, 6516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3532 Valid, 2984 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-12-14 18:17:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2021-12-14 18:17:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 5487. [2021-12-14 18:17:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 3730 states have (on average 1.2823056300268096) internal successors, (4783), 3826 states have internal predecessors, (4783), 1415 states have call successors, (1415), 326 states have call predecessors, (1415), 341 states have return successors, (1524), 1422 states have call predecessors, (1524), 1414 states have call successors, (1524) [2021-12-14 18:17:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 7722 transitions. [2021-12-14 18:17:44,311 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 7722 transitions. Word has length 122 [2021-12-14 18:17:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:17:44,312 INFO L470 AbstractCegarLoop]: Abstraction has 5487 states and 7722 transitions. [2021-12-14 18:17:44,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 18:17:44,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 7722 transitions. [2021-12-14 18:17:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 18:17:44,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:17:44,314 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:17:44,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:17:44,315 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:17:44,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:17:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1203194411, now seen corresponding path program 1 times [2021-12-14 18:17:44,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:17:44,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791430649] [2021-12-14 18:17:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:44,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:17:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:17:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:17:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:17:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:17:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:17:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:17:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 18:17:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 18:17:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:17:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-14 18:17:44,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:17:44,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791430649] [2021-12-14 18:17:44,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791430649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:17:44,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:17:44,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 18:17:44,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691341137] [2021-12-14 18:17:44,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:17:44,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 18:17:44,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:17:44,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 18:17:44,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:17:44,550 INFO L87 Difference]: Start difference. First operand 5487 states and 7722 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 18:17:52,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:17:52,903 INFO L93 Difference]: Finished difference Result 18067 states and 25992 transitions. [2021-12-14 18:17:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 18:17:52,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2021-12-14 18:17:52,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:17:52,969 INFO L225 Difference]: With dead ends: 18067 [2021-12-14 18:17:52,969 INFO L226 Difference]: Without dead ends: 12601 [2021-12-14 18:17:52,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-14 18:17:52,994 INFO L933 BasicCegarLoop]: 1965 mSDtfsCounter, 3794 mSDsluCounter, 6308 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 2483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4010 SdHoareTripleChecker+Valid, 8273 SdHoareTripleChecker+Invalid, 6201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2483 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:17:52,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4010 Valid, 8273 Invalid, 6201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2483 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-12-14 18:17:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-12-14 18:17:53,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 10970. [2021-12-14 18:17:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10970 states, 7461 states have (on average 1.2814636107760353) internal successors, (9561), 7653 states have internal predecessors, (9561), 2823 states have call successors, (2823), 654 states have call predecessors, (2823), 685 states have return successors, (3130), 2838 states have call predecessors, (3130), 2822 states have call successors, (3130) [2021-12-14 18:17:53,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10970 states to 10970 states and 15514 transitions. [2021-12-14 18:17:53,369 INFO L78 Accepts]: Start accepts. Automaton has 10970 states and 15514 transitions. Word has length 123 [2021-12-14 18:17:53,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:17:53,370 INFO L470 AbstractCegarLoop]: Abstraction has 10970 states and 15514 transitions. [2021-12-14 18:17:53,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 18:17:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 10970 states and 15514 transitions. [2021-12-14 18:17:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-14 18:17:53,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:17:53,373 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:17:53,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:17:53,373 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:17:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:17:53,374 INFO L85 PathProgramCache]: Analyzing trace with hash -292898560, now seen corresponding path program 1 times [2021-12-14 18:17:53,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:17:53,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589062955] [2021-12-14 18:17:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:53,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:17:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:17:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:17:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:17:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:17:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:17:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:17:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 18:17:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 18:17:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:17:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-14 18:17:53,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:17:53,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589062955] [2021-12-14 18:17:53,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589062955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:17:53,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:17:53,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 18:17:53,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365196511] [2021-12-14 18:17:53,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:17:53,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 18:17:53,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:17:53,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 18:17:53,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:17:53,682 INFO L87 Difference]: Start difference. First operand 10970 states and 15514 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 18:18:04,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:18:05,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:18:08,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:08,398 INFO L93 Difference]: Finished difference Result 35652 states and 51556 transitions. [2021-12-14 18:18:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 18:18:08,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 120 [2021-12-14 18:18:08,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:08,516 INFO L225 Difference]: With dead ends: 35652 [2021-12-14 18:18:08,517 INFO L226 Difference]: Without dead ends: 24703 [2021-12-14 18:18:08,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-14 18:18:08,558 INFO L933 BasicCegarLoop]: 2689 mSDtfsCounter, 3171 mSDsluCounter, 8154 mSDsCounter, 0 mSdLazyCounter, 4510 mSolverCounterSat, 1983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3387 SdHoareTripleChecker+Valid, 10843 SdHoareTripleChecker+Invalid, 6493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1983 IncrementalHoareTripleChecker+Valid, 4510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:08,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3387 Valid, 10843 Invalid, 6493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1983 Valid, 4510 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2021-12-14 18:18:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24703 states. [2021-12-14 18:18:09,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24703 to 21519. [2021-12-14 18:18:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21519 states, 14619 states have (on average 1.2803201313359327) internal successors, (18717), 15011 states have internal predecessors, (18717), 5545 states have call successors, (5545), 1291 states have call predecessors, (5545), 1354 states have return successors, (6350), 5556 states have call predecessors, (6350), 5544 states have call successors, (6350) [2021-12-14 18:18:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21519 states to 21519 states and 30612 transitions. [2021-12-14 18:18:09,330 INFO L78 Accepts]: Start accepts. Automaton has 21519 states and 30612 transitions. Word has length 120 [2021-12-14 18:18:09,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:09,330 INFO L470 AbstractCegarLoop]: Abstraction has 21519 states and 30612 transitions. [2021-12-14 18:18:09,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-14 18:18:09,331 INFO L276 IsEmpty]: Start isEmpty. Operand 21519 states and 30612 transitions. [2021-12-14 18:18:09,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-14 18:18:09,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:09,335 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:18:09,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 18:18:09,335 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:09,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:09,336 INFO L85 PathProgramCache]: Analyzing trace with hash 55159783, now seen corresponding path program 1 times [2021-12-14 18:18:09,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:09,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950997797] [2021-12-14 18:18:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:09,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:18:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:18:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:18:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:18:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:18:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:18:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 18:18:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 18:18:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 18:18:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:18:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-14 18:18:09,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:09,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950997797] [2021-12-14 18:18:09,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950997797] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:18:09,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619638469] [2021-12-14 18:18:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:09,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:18:09,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:18:09,730 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 18:18:09,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 18:18:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:10,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:18:10,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:18:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-14 18:18:10,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:18:10,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619638469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:10,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:18:10,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-14 18:18:10,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626593221] [2021-12-14 18:18:10,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:10,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:18:10,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:10,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:18:10,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-12-14 18:18:10,602 INFO L87 Difference]: Start difference. First operand 21519 states and 30612 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 18:18:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:11,447 INFO L93 Difference]: Finished difference Result 53797 states and 76670 transitions. [2021-12-14 18:18:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:18:11,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 133 [2021-12-14 18:18:11,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:11,576 INFO L225 Difference]: With dead ends: 53797 [2021-12-14 18:18:11,576 INFO L226 Difference]: Without dead ends: 32299 [2021-12-14 18:18:11,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-12-14 18:18:11,637 INFO L933 BasicCegarLoop]: 2926 mSDtfsCounter, 1918 mSDsluCounter, 13568 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 16494 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:11,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 16494 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:18:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32299 states. [2021-12-14 18:18:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32299 to 32150. [2021-12-14 18:18:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 21851 states have (on average 1.2807651823715163) internal successors, (27986), 22443 states have internal predecessors, (27986), 8267 states have call successors, (8267), 1928 states have call predecessors, (8267), 2031 states have return successors, (9658), 8282 states have call predecessors, (9658), 8266 states have call successors, (9658) [2021-12-14 18:18:12,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 45911 transitions. [2021-12-14 18:18:12,744 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 45911 transitions. Word has length 133 [2021-12-14 18:18:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:12,745 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 45911 transitions. [2021-12-14 18:18:12,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 18:18:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 45911 transitions. [2021-12-14 18:18:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 18:18:12,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:12,749 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:18:12,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 18:18:12,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-14 18:18:12,984 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:12,985 INFO L85 PathProgramCache]: Analyzing trace with hash 484807700, now seen corresponding path program 1 times [2021-12-14 18:18:12,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:12,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626948032] [2021-12-14 18:18:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:12,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:18:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:18:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:18:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:18:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 18:18:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 18:18:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 18:18:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-14 18:18:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 18:18:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 18:18:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-14 18:18:13,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:13,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626948032] [2021-12-14 18:18:13,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626948032] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:18:13,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984822274] [2021-12-14 18:18:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:13,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:18:13,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:18:13,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 18:18:13,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 18:18:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:18:13,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:18:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-14 18:18:14,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:18:14,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984822274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:14,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:18:14,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-14 18:18:14,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763712274] [2021-12-14 18:18:14,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:14,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:18:14,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:18:14,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-12-14 18:18:14,219 INFO L87 Difference]: Start difference. First operand 32150 states and 45911 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 18:18:15,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:15,293 INFO L93 Difference]: Finished difference Result 75112 states and 107314 transitions. [2021-12-14 18:18:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:18:15,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 134 [2021-12-14 18:18:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:15,665 INFO L225 Difference]: With dead ends: 75112 [2021-12-14 18:18:15,666 INFO L226 Difference]: Without dead ends: 42983 [2021-12-14 18:18:15,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-12-14 18:18:15,761 INFO L933 BasicCegarLoop]: 3048 mSDtfsCounter, 1918 mSDsluCounter, 14044 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 17092 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:15,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 17092 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:18:15,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42983 states.