./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--packetengines--hamachi.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--packetengines--hamachi.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 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:18:19,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:18:19,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:18:19,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:18:19,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:18:19,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:18:19,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:18:19,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:18:19,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:18:19,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:18:19,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:18:19,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:18:19,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:18:19,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:18:19,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:18:19,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:18:19,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:18:19,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:18:19,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:18:19,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:18:19,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:18:19,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:18:19,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:18:19,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:18:19,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:18:19,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:18:19,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:18:19,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:18:19,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:18:19,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:18:19,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:18:19,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:18:19,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:18:19,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:18:19,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:18:19,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:18:19,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:18:19,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:18:19,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:18:19,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:18:19,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:18:19,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:18:19,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:18:19,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:18:19,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:18:19,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:18:19,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:18:19,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:18:19,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:18:19,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:18:19,564 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:18:19,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:18:19,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:18:19,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:18:19,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:18:19,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:18:19,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:18:19,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:18:19,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:18:19,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:18:19,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:18:19,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:18:19,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:18:19,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:18:19,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:18:19,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:18:19,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:18:19,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:18:19,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:18:19,568 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:18:19,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:18:19,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:18:19,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:18:19,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375c8b791fa06d541fb014bd5076ab9979e5fb4b76e2515aaac1f292cd2a1d79 [2021-12-14 18:18:19,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:18:19,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:18:19,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:18:19,813 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:18:19,813 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:18:19,814 INFO L432 ainManager$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--packetengines--hamachi.ko-entry_point.cil.out.i [2021-12-14 18:18:19,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30e5b175/a0e4cba24c0f4865979c83e485989ae9/FLAG7f616a71e [2021-12-14 18:18:20,379 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:18:20,380 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--packetengines--hamachi.ko-entry_point.cil.out.i [2021-12-14 18:18:20,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30e5b175/a0e4cba24c0f4865979c83e485989ae9/FLAG7f616a71e [2021-12-14 18:18:20,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c30e5b175/a0e4cba24c0f4865979c83e485989ae9 [2021-12-14 18:18:20,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:18:20,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:18:20,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:18:20,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:18:20,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:18:20,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:18:20" (1/1) ... [2021-12-14 18:18:20,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d24ce80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:20, skipping insertion in model container [2021-12-14 18:18:20,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:18:20" (1/1) ... [2021-12-14 18:18:20,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:18:20,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:18:21,827 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--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-12-14 18:18:21,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:18:21,919 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:18:22,130 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--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2021-12-14 18:18:22,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:18:22,236 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:18:22,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22 WrapperNode [2021-12-14 18:18:22,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:18:22,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:18:22,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:18:22,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:18:22,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22" (1/1) ... [2021-12-14 18:18:22,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22" (1/1) ... [2021-12-14 18:18:22,440 INFO L137 Inliner]: procedures = 226, calls = 1428, calls flagged for inlining = 121, calls inlined = 118, statements flattened = 3761 [2021-12-14 18:18:22,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:18:22,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:18:22,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:18:22,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:18:22,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22" (1/1) ... [2021-12-14 18:18:22,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22" (1/1) ... [2021-12-14 18:18:22,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22" (1/1) ... [2021-12-14 18:18:22,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22" (1/1) ... [2021-12-14 18:18:22,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22" (1/1) ... [2021-12-14 18:18:22,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22" (1/1) ... [2021-12-14 18:18:22,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22" (1/1) ... [2021-12-14 18:18:22,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:18:22,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:18:22,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:18:22,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:18:22,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22" (1/1) ... [2021-12-14 18:18:22,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:18:22,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:18:22,647 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 18:18:22,655 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 18:18:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_get_drvinfo [2021-12-14 18:18:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_get_drvinfo [2021-12-14 18:18:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2021-12-14 18:18:22,674 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2021-12-14 18:18:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:18:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:18:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-14 18:18:22,674 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-14 18:18:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:18:22,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:18:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:18:22,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:18:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-14 18:18:22,675 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-14 18:18:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-14 18:18:22,675 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-14 18:18:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 18:18:22,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 18:18:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:18:22,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:18:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-12-14 18:18:22,676 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-12-14 18:18:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:18:22,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:18:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-14 18:18:22,676 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-14 18:18:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 18:18:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 18:18:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 18:18:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 18:18:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:18:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:18:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-14 18:18:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-14 18:18:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-14 18:18:22,678 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-14 18:18:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-14 18:18:22,678 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-14 18:18:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:18:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-14 18:18:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-14 18:18:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-14 18:18:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-14 18:18:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:18:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-14 18:18:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-14 18:18:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-14 18:18:22,680 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-14 18:18:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-14 18:18:22,680 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-14 18:18:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 18:18:22,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 18:18:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-14 18:18:22,681 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-14 18:18:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:18:22,681 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-14 18:18:22,682 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-14 18:18:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:18:22,682 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-14 18:18:22,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-14 18:18:22,683 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-12-14 18:18:22,683 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-12-14 18:18:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-14 18:18:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-14 18:18:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-14 18:18:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-14 18:18:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:18:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 18:18:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 18:18:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:18:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-14 18:18:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-14 18:18:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:18:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-12-14 18:18:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-12-14 18:18:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-14 18:18:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-14 18:18:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 18:18:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 18:18:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_ioctl [2021-12-14 18:18:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_ioctl [2021-12-14 18:18:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 18:18:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 18:18:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-14 18:18:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-14 18:18:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:18:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-14 18:18:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-14 18:18:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:18:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:18:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:18:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:18:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:18:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:18:22,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:18:22,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:18:22,689 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 18:18:22,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 18:18:22,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:18:22,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 18:18:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 18:18:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_get_stats [2021-12-14 18:18:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_get_stats [2021-12-14 18:18:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-12-14 18:18:22,690 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-12-14 18:18:22,690 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-14 18:18:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-14 18:18:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure hamachi_tx_timeout [2021-12-14 18:18:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure hamachi_tx_timeout [2021-12-14 18:18:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-12-14 18:18:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-12-14 18:18:22,691 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-14 18:18:22,691 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-14 18:18:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-12-14 18:18:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-12-14 18:18:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-12-14 18:18:22,692 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-12-14 18:18:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-12-14 18:18:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-12-14 18:18:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:18:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-12-14 18:18:22,695 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-12-14 18:18:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-12-14 18:18:22,695 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-12-14 18:18:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-12-14 18:18:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-12-14 18:18:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-12-14 18:18:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-12-14 18:18:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:18:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:18:23,168 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:18:23,171 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:18:23,614 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:18:24,710 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:18:24,725 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:18:24,725 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:18:24,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:18:24 BoogieIcfgContainer [2021-12-14 18:18:24,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:18:24,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:18:24,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:18:24,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:18:24,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:18:20" (1/3) ... [2021-12-14 18:18:24,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49345a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:18:24, skipping insertion in model container [2021-12-14 18:18:24,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:18:22" (2/3) ... [2021-12-14 18:18:24,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49345a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:18:24, skipping insertion in model container [2021-12-14 18:18:24,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:18:24" (3/3) ... [2021-12-14 18:18:24,733 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2021-12-14 18:18:24,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:18:24,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:18:24,775 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:18:24,783 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 18:18:24,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:18:24,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 1175 states, 832 states have (on average 1.3353365384615385) internal successors, (1111), 860 states have internal predecessors, (1111), 285 states have call successors, (285), 57 states have call predecessors, (285), 56 states have return successors, (277), 267 states have call predecessors, (277), 277 states have call successors, (277) [2021-12-14 18:18:24,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-14 18:18:24,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:24,836 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:18:24,837 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash 112228501, now seen corresponding path program 1 times [2021-12-14 18:18:24,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:24,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665493266] [2021-12-14 18:18:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:24,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:18:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:18:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:18:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:18:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:18:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:18:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:18:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:18:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 18:18:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 18:18:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:18:25,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:25,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665493266] [2021-12-14 18:18:25,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665493266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:25,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:18:25,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:18:25,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831846125] [2021-12-14 18:18:25,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:25,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:18:25,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:25,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:18:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:18:25,572 INFO L87 Difference]: Start difference. First operand has 1175 states, 832 states have (on average 1.3353365384615385) internal successors, (1111), 860 states have internal predecessors, (1111), 285 states have call successors, (285), 57 states have call predecessors, (285), 56 states have return successors, (277), 267 states have call predecessors, (277), 277 states have call successors, (277) Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:18:27,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:27,438 INFO L93 Difference]: Finished difference Result 2468 states and 3573 transitions. [2021-12-14 18:18:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:18:27,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 162 [2021-12-14 18:18:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:27,455 INFO L225 Difference]: With dead ends: 2468 [2021-12-14 18:18:27,459 INFO L226 Difference]: Without dead ends: 1275 [2021-12-14 18:18:27,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:18:27,477 INFO L933 BasicCegarLoop]: 1578 mSDtfsCounter, 737 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:27,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 2955 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 18:18:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-12-14 18:18:27,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1152. [2021-12-14 18:18:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 819 states have (on average 1.321123321123321) internal successors, (1082), 837 states have internal predecessors, (1082), 277 states have call successors, (277), 56 states have call predecessors, (277), 55 states have return successors, (276), 266 states have call predecessors, (276), 276 states have call successors, (276) [2021-12-14 18:18:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1635 transitions. [2021-12-14 18:18:27,609 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1635 transitions. Word has length 162 [2021-12-14 18:18:27,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:27,610 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 1635 transitions. [2021-12-14 18:18:27,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:18:27,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1635 transitions. [2021-12-14 18:18:27,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-14 18:18:27,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:27,629 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:18:27,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:18:27,629 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:27,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1911430239, now seen corresponding path program 1 times [2021-12-14 18:18:27,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:27,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778344826] [2021-12-14 18:18:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:27,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:18:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:18:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:18:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:18:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:18:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:18:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:18:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:18:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:27,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 18:18:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 18:18:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:18:28,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:28,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778344826] [2021-12-14 18:18:28,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778344826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:28,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:18:28,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:18:28,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250403143] [2021-12-14 18:18:28,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:28,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:18:28,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:18:28,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:18:28,010 INFO L87 Difference]: Start difference. First operand 1152 states and 1635 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:18:30,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:30,394 INFO L93 Difference]: Finished difference Result 3201 states and 4540 transitions. [2021-12-14 18:18:30,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:18:30,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 162 [2021-12-14 18:18:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:30,404 INFO L225 Difference]: With dead ends: 3201 [2021-12-14 18:18:30,404 INFO L226 Difference]: Without dead ends: 2073 [2021-12-14 18:18:30,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:18:30,409 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 2176 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 1278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 4269 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1278 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:30,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2277 Valid, 4269 Invalid, 2898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1278 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 18:18:30,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2021-12-14 18:18:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1798. [2021-12-14 18:18:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1292 states have (on average 1.3088235294117647) internal successors, (1691), 1319 states have internal predecessors, (1691), 407 states have call successors, (407), 99 states have call predecessors, (407), 98 states have return successors, (406), 392 states have call predecessors, (406), 406 states have call successors, (406) [2021-12-14 18:18:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2504 transitions. [2021-12-14 18:18:30,478 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2504 transitions. Word has length 162 [2021-12-14 18:18:30,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:30,479 INFO L470 AbstractCegarLoop]: Abstraction has 1798 states and 2504 transitions. [2021-12-14 18:18:30,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 18:18:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2504 transitions. [2021-12-14 18:18:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-14 18:18:30,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:30,482 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 18:18:30,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:18:30,483 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:30,483 INFO L85 PathProgramCache]: Analyzing trace with hash -41870992, now seen corresponding path program 1 times [2021-12-14 18:18:30,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:30,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505879094] [2021-12-14 18:18:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:30,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:18:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:18:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:18:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:18:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:18:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:18:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:18:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:18:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 18:18:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 18:18:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 18:18:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 18:18:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:18:30,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:30,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505879094] [2021-12-14 18:18:30,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505879094] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:30,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:18:30,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:18:30,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885938862] [2021-12-14 18:18:30,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:30,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:18:30,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:30,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:18:30,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:18:30,817 INFO L87 Difference]: Start difference. First operand 1798 states and 2504 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-14 18:18:35,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:35,382 INFO L93 Difference]: Finished difference Result 5852 states and 8264 transitions. [2021-12-14 18:18:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:18:35,382 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 173 [2021-12-14 18:18:35,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:35,400 INFO L225 Difference]: With dead ends: 5852 [2021-12-14 18:18:35,400 INFO L226 Difference]: Without dead ends: 4082 [2021-12-14 18:18:35,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-14 18:18:35,408 INFO L933 BasicCegarLoop]: 1817 mSDtfsCounter, 3406 mSDsluCounter, 7230 mSDsCounter, 0 mSdLazyCounter, 4254 mSolverCounterSat, 2320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3636 SdHoareTripleChecker+Valid, 9047 SdHoareTripleChecker+Invalid, 6574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2320 IncrementalHoareTripleChecker+Valid, 4254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:35,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3636 Valid, 9047 Invalid, 6574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2320 Valid, 4254 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-14 18:18:35,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-12-14 18:18:35,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 3573. [2021-12-14 18:18:35,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3573 states, 2572 states have (on average 1.3083203732503887) internal successors, (3365), 2626 states have internal predecessors, (3365), 804 states have call successors, (804), 197 states have call predecessors, (804), 196 states have return successors, (803), 775 states have call predecessors, (803), 803 states have call successors, (803) [2021-12-14 18:18:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 4972 transitions. [2021-12-14 18:18:35,527 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 4972 transitions. Word has length 173 [2021-12-14 18:18:35,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:35,528 INFO L470 AbstractCegarLoop]: Abstraction has 3573 states and 4972 transitions. [2021-12-14 18:18:35,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-14 18:18:35,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 4972 transitions. [2021-12-14 18:18:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-14 18:18:35,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:35,531 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 18:18:35,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:18:35,532 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:35,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1008660019, now seen corresponding path program 1 times [2021-12-14 18:18:35,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:35,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052584555] [2021-12-14 18:18:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:35,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:18:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:18:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:18:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:18:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:18:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:18:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:18:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:18:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-14 18:18:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 18:18:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:18:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-14 18:18:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:18:35,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:35,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052584555] [2021-12-14 18:18:35,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052584555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:35,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:18:35,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:18:35,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231063758] [2021-12-14 18:18:35,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:35,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:18:35,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:35,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:18:35,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:18:35,877 INFO L87 Difference]: Start difference. First operand 3573 states and 4972 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-14 18:18:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:39,951 INFO L93 Difference]: Finished difference Result 11689 states and 16480 transitions. [2021-12-14 18:18:39,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:18:39,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 175 [2021-12-14 18:18:39,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:40,002 INFO L225 Difference]: With dead ends: 11689 [2021-12-14 18:18:40,003 INFO L226 Difference]: Without dead ends: 8144 [2021-12-14 18:18:40,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-14 18:18:40,021 INFO L933 BasicCegarLoop]: 1708 mSDtfsCounter, 3425 mSDsluCounter, 6167 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 2445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3655 SdHoareTripleChecker+Valid, 7875 SdHoareTripleChecker+Invalid, 6016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2445 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:40,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3655 Valid, 7875 Invalid, 6016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2445 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-14 18:18:40,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2021-12-14 18:18:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 7135. [2021-12-14 18:18:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7135 states, 5142 states have (on average 1.3076623881758072) internal successors, (6724), 5250 states have internal predecessors, (6724), 1598 states have call successors, (1598), 395 states have call predecessors, (1598), 394 states have return successors, (1597), 1541 states have call predecessors, (1597), 1597 states have call successors, (1597) [2021-12-14 18:18:40,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7135 states to 7135 states and 9919 transitions. [2021-12-14 18:18:40,263 INFO L78 Accepts]: Start accepts. Automaton has 7135 states and 9919 transitions. Word has length 175 [2021-12-14 18:18:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:40,264 INFO L470 AbstractCegarLoop]: Abstraction has 7135 states and 9919 transitions. [2021-12-14 18:18:40,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-14 18:18:40,265 INFO L276 IsEmpty]: Start isEmpty. Operand 7135 states and 9919 transitions. [2021-12-14 18:18:40,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-14 18:18:40,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:40,268 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:18:40,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:18:40,269 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:40,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:40,269 INFO L85 PathProgramCache]: Analyzing trace with hash 558339437, now seen corresponding path program 1 times [2021-12-14 18:18:40,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:40,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752714791] [2021-12-14 18:18:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:40,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:18:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:18:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:18:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:18:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:18:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:18:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:18:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:18:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 18:18:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 18:18:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 18:18:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 18:18:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:18:40,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:40,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752714791] [2021-12-14 18:18:40,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752714791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:40,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:18:40,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:18:40,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426366627] [2021-12-14 18:18:40,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:40,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:18:40,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:40,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:18:40,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:18:40,598 INFO L87 Difference]: Start difference. First operand 7135 states and 9919 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-14 18:18:44,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:44,620 INFO L93 Difference]: Finished difference Result 23383 states and 32908 transitions. [2021-12-14 18:18:44,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:18:44,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 172 [2021-12-14 18:18:44,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:44,684 INFO L225 Difference]: With dead ends: 23383 [2021-12-14 18:18:44,684 INFO L226 Difference]: Without dead ends: 16276 [2021-12-14 18:18:44,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-14 18:18:44,711 INFO L933 BasicCegarLoop]: 1818 mSDtfsCounter, 3427 mSDsluCounter, 6561 mSDsCounter, 0 mSdLazyCounter, 3626 mSolverCounterSat, 2328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3657 SdHoareTripleChecker+Valid, 8379 SdHoareTripleChecker+Invalid, 5954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2328 IncrementalHoareTripleChecker+Valid, 3626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:44,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3657 Valid, 8379 Invalid, 5954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2328 Valid, 3626 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-14 18:18:44,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16276 states. [2021-12-14 18:18:45,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16276 to 14187. [2021-12-14 18:18:45,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14187 states, 10222 states have (on average 1.3081588730189786) internal successors, (13372), 10462 states have internal predecessors, (13372), 3178 states have call successors, (3178), 787 states have call predecessors, (3178), 786 states have return successors, (3177), 3041 states have call predecessors, (3177), 3177 states have call successors, (3177) [2021-12-14 18:18:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14187 states to 14187 states and 19727 transitions. [2021-12-14 18:18:45,173 INFO L78 Accepts]: Start accepts. Automaton has 14187 states and 19727 transitions. Word has length 172 [2021-12-14 18:18:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:45,174 INFO L470 AbstractCegarLoop]: Abstraction has 14187 states and 19727 transitions. [2021-12-14 18:18:45,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-14 18:18:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 14187 states and 19727 transitions. [2021-12-14 18:18:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-14 18:18:45,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:45,177 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 18:18:45,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 18:18:45,177 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:45,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2098159338, now seen corresponding path program 1 times [2021-12-14 18:18:45,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:45,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103717757] [2021-12-14 18:18:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:45,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:18:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:18:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:18:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:18:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:18:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:18:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:18:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:18:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:18:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 18:18:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 18:18:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:18:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:18:45,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:45,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103717757] [2021-12-14 18:18:45,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103717757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:45,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:18:45,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:18:45,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999564814] [2021-12-14 18:18:45,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:45,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:18:45,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:45,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:18:45,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:18:45,496 INFO L87 Difference]: Start difference. First operand 14187 states and 19727 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-14 18:18:49,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:49,764 INFO L93 Difference]: Finished difference Result 45841 states and 64452 transitions. [2021-12-14 18:18:49,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:18:49,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 174 [2021-12-14 18:18:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:49,864 INFO L225 Difference]: With dead ends: 45841 [2021-12-14 18:18:49,865 INFO L226 Difference]: Without dead ends: 31682 [2021-12-14 18:18:49,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-14 18:18:49,912 INFO L933 BasicCegarLoop]: 1711 mSDtfsCounter, 3424 mSDsluCounter, 6186 mSDsCounter, 0 mSdLazyCounter, 3559 mSolverCounterSat, 2433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3654 SdHoareTripleChecker+Valid, 7897 SdHoareTripleChecker+Invalid, 5992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2433 IncrementalHoareTripleChecker+Valid, 3559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:49,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3654 Valid, 7897 Invalid, 5992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2433 Valid, 3559 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-14 18:18:49,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31682 states. [2021-12-14 18:18:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31682 to 27853. [2021-12-14 18:18:50,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27853 states, 20068 states have (on average 1.3072553318716365) internal successors, (26234), 20532 states have internal predecessors, (26234), 6229 states have call successors, (6229), 1556 states have call predecessors, (6229), 1555 states have return successors, (6228), 5968 states have call predecessors, (6228), 6228 states have call successors, (6228) [2021-12-14 18:18:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27853 states to 27853 states and 38691 transitions. [2021-12-14 18:18:50,874 INFO L78 Accepts]: Start accepts. Automaton has 27853 states and 38691 transitions. Word has length 174 [2021-12-14 18:18:50,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:50,875 INFO L470 AbstractCegarLoop]: Abstraction has 27853 states and 38691 transitions. [2021-12-14 18:18:50,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-14 18:18:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 27853 states and 38691 transitions. [2021-12-14 18:18:50,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-14 18:18:50,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:50,879 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:18:50,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 18:18:50,879 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:50,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1967613030, now seen corresponding path program 1 times [2021-12-14 18:18:50,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:50,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875723594] [2021-12-14 18:18:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:50,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:18:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:18:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:18:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:18:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:18:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:18:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:18:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:18:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:18:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 18:18:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 18:18:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 18:18:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-14 18:18:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-12-14 18:18:51,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:51,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875723594] [2021-12-14 18:18:51,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875723594] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:18:51,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349716107] [2021-12-14 18:18:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:51,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:18:51,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:18:51,277 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 18:18:51,277 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 18:18:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:51,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 18:18:51,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:18:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-12-14 18:18:52,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:18:52,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349716107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:52,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:18:52,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2021-12-14 18:18:52,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322857623] [2021-12-14 18:18:52,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:52,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 18:18:52,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:52,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 18:18:52,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-14 18:18:52,222 INFO L87 Difference]: Start difference. First operand 27853 states and 38691 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:18:53,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:53,072 INFO L93 Difference]: Finished difference Result 54639 states and 75854 transitions. [2021-12-14 18:18:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 18:18:53,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 186 [2021-12-14 18:18:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:53,157 INFO L225 Difference]: With dead ends: 54639 [2021-12-14 18:18:53,158 INFO L226 Difference]: Without dead ends: 26814 [2021-12-14 18:18:53,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-14 18:18:53,213 INFO L933 BasicCegarLoop]: 1552 mSDtfsCounter, 1483 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:53,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 1552 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 18:18:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26814 states. [2021-12-14 18:18:53,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26814 to 26814. [2021-12-14 18:18:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26814 states, 19548 states have (on average 1.2996726007775732) internal successors, (25406), 20012 states have internal predecessors, (25406), 5711 states have call successors, (5711), 1555 states have call predecessors, (5711), 1554 states have return successors, (5710), 5450 states have call predecessors, (5710), 5710 states have call successors, (5710) [2021-12-14 18:18:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26814 states to 26814 states and 36827 transitions. [2021-12-14 18:18:53,995 INFO L78 Accepts]: Start accepts. Automaton has 26814 states and 36827 transitions. Word has length 186 [2021-12-14 18:18:53,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:53,996 INFO L470 AbstractCegarLoop]: Abstraction has 26814 states and 36827 transitions. [2021-12-14 18:18:53,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:18:53,996 INFO L276 IsEmpty]: Start isEmpty. Operand 26814 states and 36827 transitions. [2021-12-14 18:18:53,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-14 18:18:53,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:53,999 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:18:54,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 18:18:54,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:18:54,215 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:54,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:54,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1535091734, now seen corresponding path program 1 times [2021-12-14 18:18:54,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:54,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343794894] [2021-12-14 18:18:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:54,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:18:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:18:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:18:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:18:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:18:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:18:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:18:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:18:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-14 18:18:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 18:18:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 18:18:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 18:18:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-14 18:18:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-12-14 18:18:54,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:54,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343794894] [2021-12-14 18:18:54,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343794894] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:18:54,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670533879] [2021-12-14 18:18:54,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:54,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:18:54,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:18:54,675 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 18:18:54,677 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 18:18:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:55,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:18:55,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:18:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:18:55,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:18:55,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670533879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:55,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:18:55,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-14 18:18:55,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983473711] [2021-12-14 18:18:55,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:55,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:18:55,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:55,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:18:55,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-12-14 18:18:55,639 INFO L87 Difference]: Start difference. First operand 26814 states and 36827 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:18:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:56,675 INFO L93 Difference]: Finished difference Result 67106 states and 92145 transitions. [2021-12-14 18:18:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:18:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 186 [2021-12-14 18:18:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:56,794 INFO L225 Difference]: With dead ends: 67106 [2021-12-14 18:18:56,795 INFO L226 Difference]: Without dead ends: 40320 [2021-12-14 18:18:56,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-12-14 18:18:56,854 INFO L933 BasicCegarLoop]: 2150 mSDtfsCounter, 1583 mSDsluCounter, 10129 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 12279 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:56,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 12279 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:18:56,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40320 states. [2021-12-14 18:18:57,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40320 to 40025. [2021-12-14 18:18:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40025 states, 29194 states have (on average 1.300575460711105) internal successors, (37969), 29906 states have internal predecessors, (37969), 8500 states have call successors, (8500), 2315 states have call predecessors, (8500), 2330 states have return successors, (8539), 8107 states have call predecessors, (8539), 8499 states have call successors, (8539) [2021-12-14 18:18:57,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40025 states to 40025 states and 55008 transitions. [2021-12-14 18:18:58,005 INFO L78 Accepts]: Start accepts. Automaton has 40025 states and 55008 transitions. Word has length 186 [2021-12-14 18:18:58,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:58,006 INFO L470 AbstractCegarLoop]: Abstraction has 40025 states and 55008 transitions. [2021-12-14 18:18:58,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:18:58,006 INFO L276 IsEmpty]: Start isEmpty. Operand 40025 states and 55008 transitions. [2021-12-14 18:18:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-14 18:18:58,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:58,010 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 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, 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 18:18:58,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-14 18:18:58,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-14 18:18:58,223 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:58,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:58,224 INFO L85 PathProgramCache]: Analyzing trace with hash 556154526, now seen corresponding path program 1 times [2021-12-14 18:18:58,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:58,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361036575] [2021-12-14 18:18:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:58,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:18:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:18:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:18:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:18:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:18:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:18:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:18:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:18:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:18:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:18:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 18:18:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 18:18:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-14 18:18:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 18:18:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-14 18:18:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:18:58,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:58,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361036575] [2021-12-14 18:18:58,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361036575] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:18:58,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066490310] [2021-12-14 18:18:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:58,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:18:58,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:18:58,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 18:18:58,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 18:18:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:59,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:18:59,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:18:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:18:59,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:18:59,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066490310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:59,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:18:59,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-12-14 18:18:59,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898393288] [2021-12-14 18:18:59,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:59,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:18:59,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:59,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:18:59,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-14 18:18:59,570 INFO L87 Difference]: Start difference. First operand 40025 states and 55008 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:19:00,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:19:00,813 INFO L93 Difference]: Finished difference Result 93634 states and 128599 transitions. [2021-12-14 18:19:00,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:19:00,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 187 [2021-12-14 18:19:00,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:19:01,013 INFO L225 Difference]: With dead ends: 93634 [2021-12-14 18:19:01,013 INFO L226 Difference]: Without dead ends: 53637 [2021-12-14 18:19:01,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-12-14 18:19:01,284 INFO L933 BasicCegarLoop]: 2257 mSDtfsCounter, 1583 mSDsluCounter, 10545 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 12802 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:19:01,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 12802 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:19:01,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53637 states. [2021-12-14 18:19:02,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53637 to 53300. [2021-12-14 18:19:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53300 states, 38880 states have (on average 1.3007201646090536) internal successors, (50572), 39872 states have internal predecessors, (50572), 11289 states have call successors, (11289), 3075 states have call predecessors, (11289), 3130 states have return successors, (11392), 10756 states have call predecessors, (11392), 11288 states have call successors, (11392) [2021-12-14 18:19:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53300 states to 53300 states and 73253 transitions. [2021-12-14 18:19:03,031 INFO L78 Accepts]: Start accepts. Automaton has 53300 states and 73253 transitions. Word has length 187 [2021-12-14 18:19:03,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:19:03,032 INFO L470 AbstractCegarLoop]: Abstraction has 53300 states and 73253 transitions. [2021-12-14 18:19:03,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:19:03,032 INFO L276 IsEmpty]: Start isEmpty. Operand 53300 states and 73253 transitions. [2021-12-14 18:19:03,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-14 18:19:03,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:19:03,037 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 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, 1, 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 18:19:03,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-14 18:19:03,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:19:03,260 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:19:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:19:03,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1463434845, now seen corresponding path program 1 times [2021-12-14 18:19:03,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:19:03,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489702860] [2021-12-14 18:19:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:19:03,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:19:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:19:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:19:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:19:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:19:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:19:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:19:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:19:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:19:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 18:19:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:19:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 18:19:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-14 18:19:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-14 18:19:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:19:03,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:19:03,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489702860] [2021-12-14 18:19:03,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489702860] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:19:03,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046030737] [2021-12-14 18:19:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:19:03,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:19:03,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:19:03,624 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 18:19:03,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 18:19:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:04,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:19:04,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:19:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:19:04,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:19:04,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046030737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:19:04,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:19:04,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-12-14 18:19:04,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044338255] [2021-12-14 18:19:04,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:19:04,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:19:04,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:19:04,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:19:04,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-14 18:19:04,459 INFO L87 Difference]: Start difference. First operand 53300 states and 73253 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:19:06,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:19:06,176 INFO L93 Difference]: Finished difference Result 120162 states and 165053 transitions. [2021-12-14 18:19:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:19:06,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 188 [2021-12-14 18:19:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:19:06,388 INFO L225 Difference]: With dead ends: 120162 [2021-12-14 18:19:06,388 INFO L226 Difference]: Without dead ends: 66890 [2021-12-14 18:19:06,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-12-14 18:19:06,508 INFO L933 BasicCegarLoop]: 2269 mSDtfsCounter, 1583 mSDsluCounter, 10593 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 12862 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 18:19:06,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 12862 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:19:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66890 states. [2021-12-14 18:19:08,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66890 to 53344. [2021-12-14 18:19:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53344 states, 38912 states have (on average 1.3004728618421053) internal successors, (50604), 39908 states have internal predecessors, (50604), 11289 states have call successors, (11289), 3075 states have call predecessors, (11289), 3142 states have return successors, (11410), 10764 states have call predecessors, (11410), 11288 states have call successors, (11410) [2021-12-14 18:19:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53344 states to 53344 states and 73303 transitions. [2021-12-14 18:19:08,286 INFO L78 Accepts]: Start accepts. Automaton has 53344 states and 73303 transitions. Word has length 188 [2021-12-14 18:19:08,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:19:08,286 INFO L470 AbstractCegarLoop]: Abstraction has 53344 states and 73303 transitions. [2021-12-14 18:19:08,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:19:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 53344 states and 73303 transitions. [2021-12-14 18:19:08,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 18:19:08,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:19:08,290 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 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, 1, 1, 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 18:19:08,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-14 18:19:08,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:19:08,512 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:19:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:19:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash 713916357, now seen corresponding path program 1 times [2021-12-14 18:19:08,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:19:08,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588370415] [2021-12-14 18:19:08,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:19:08,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:19:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:19:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:19:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:19:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:19:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:19:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:19:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:19:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:19:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 18:19:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-14 18:19:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 18:19:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-14 18:19:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-14 18:19:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:19:08,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:19:08,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588370415] [2021-12-14 18:19:08,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588370415] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:19:08,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213771880] [2021-12-14 18:19:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:19:08,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:19:08,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:19:08,811 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 18:19:08,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 18:19:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:09,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:19:09,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:19:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-14 18:19:09,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:19:09,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213771880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:19:09,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:19:09,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-12-14 18:19:09,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191444473] [2021-12-14 18:19:09,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:19:09,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:19:09,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:19:09,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:19:09,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-14 18:19:09,634 INFO L87 Difference]: Start difference. First operand 53344 states and 73303 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:19:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:19:11,270 INFO L93 Difference]: Finished difference Result 120222 states and 165119 transitions. [2021-12-14 18:19:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:19:11,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 189 [2021-12-14 18:19:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:19:11,446 INFO L225 Difference]: With dead ends: 120222 [2021-12-14 18:19:11,446 INFO L226 Difference]: Without dead ends: 66906 [2021-12-14 18:19:11,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-12-14 18:19:11,544 INFO L933 BasicCegarLoop]: 2269 mSDtfsCounter, 1583 mSDsluCounter, 10593 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 12862 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 18:19:11,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 12862 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:19:11,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66906 states. [2021-12-14 18:19:13,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66906 to 53370. [2021-12-14 18:19:13,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53370 states, 38932 states have (on average 1.3003185040583582) internal successors, (50624), 39926 states have internal predecessors, (50624), 11289 states have call successors, (11289), 3075 states have call predecessors, (11289), 3148 states have return successors, (11416), 10772 states have call predecessors, (11416), 11288 states have call successors, (11416) [2021-12-14 18:19:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53370 states to 53370 states and 73329 transitions. [2021-12-14 18:19:13,320 INFO L78 Accepts]: Start accepts. Automaton has 53370 states and 73329 transitions. Word has length 189 [2021-12-14 18:19:13,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:19:13,320 INFO L470 AbstractCegarLoop]: Abstraction has 53370 states and 73329 transitions. [2021-12-14 18:19:13,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-14 18:19:13,321 INFO L276 IsEmpty]: Start isEmpty. Operand 53370 states and 73329 transitions. [2021-12-14 18:19:13,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-14 18:19:13,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:19:13,325 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:19:13,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 18:19:13,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-14 18:19:13,531 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:19:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:19:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash -413484773, now seen corresponding path program 1 times [2021-12-14 18:19:13,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:19:13,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952101307] [2021-12-14 18:19:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:19:13,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:19:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:19:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:19:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:19:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:19:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:19:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:19:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:19:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:19:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:19:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:19:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 18:19:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 18:19:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-14 18:19:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-14 18:19:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-14 18:19:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:14,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-14 18:19:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:19:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-14 18:19:14,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:19:14,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952101307] [2021-12-14 18:19:14,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952101307] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:19:14,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837845422] [2021-12-14 18:19:14,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:19:14,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:19:14,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:19:14,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 18:19:14,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process