./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 04:31:33,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 04:31:33,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 04:31:33,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 04:31:33,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 04:31:33,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 04:31:33,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 04:31:33,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 04:31:33,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 04:31:33,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 04:31:33,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 04:31:33,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 04:31:33,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 04:31:33,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 04:31:33,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 04:31:33,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 04:31:33,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 04:31:33,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 04:31:33,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 04:31:33,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 04:31:33,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 04:31:33,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 04:31:33,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 04:31:33,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 04:31:33,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 04:31:33,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 04:31:33,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 04:31:33,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 04:31:33,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 04:31:33,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 04:31:33,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 04:31:33,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 04:31:33,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 04:31:33,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 04:31:33,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 04:31:33,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 04:31:33,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 04:31:33,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 04:31:33,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 04:31:33,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 04:31:33,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 04:31:33,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 04:31:33,630 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 04:31:33,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 04:31:33,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 04:31:33,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 04:31:33,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 04:31:33,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 04:31:33,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 04:31:33,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 04:31:33,635 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 04:31:33,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 04:31:33,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 04:31:33,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 04:31:33,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 04:31:33,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 04:31:33,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 04:31:33,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 04:31:33,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 04:31:33,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 04:31:33,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 04:31:33,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 04:31:33,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 04:31:33,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:31:33,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 04:31:33,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 04:31:33,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 04:31:33,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 04:31:33,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 04:31:33,639 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 04:31:33,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 04:31:33,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 04:31:33,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 04:31:33,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2021-12-16 04:31:33,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 04:31:33,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 04:31:33,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 04:31:33,832 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 04:31:33,835 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 04:31:33,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-16 04:31:33,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5e0d0bc/29a42aa952e64f7c81cc24b4e4196aa3/FLAG547be6993 [2021-12-16 04:31:34,491 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 04:31:34,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-16 04:31:34,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5e0d0bc/29a42aa952e64f7c81cc24b4e4196aa3/FLAG547be6993 [2021-12-16 04:31:34,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5e0d0bc/29a42aa952e64f7c81cc24b4e4196aa3 [2021-12-16 04:31:34,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 04:31:34,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 04:31:34,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 04:31:34,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 04:31:34,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 04:31:34,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:31:34" (1/1) ... [2021-12-16 04:31:34,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71008b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:34, skipping insertion in model container [2021-12-16 04:31:34,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:31:34" (1/1) ... [2021-12-16 04:31:34,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 04:31:34,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 04:31:35,810 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-12-16 04:31:35,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:31:35,905 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 04:31:36,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-12-16 04:31:36,196 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 04:31:36,305 INFO L208 MainTranslator]: Completed translation [2021-12-16 04:31:36,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36 WrapperNode [2021-12-16 04:31:36,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 04:31:36,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 04:31:36,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 04:31:36,309 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 04:31:36,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36" (1/1) ... [2021-12-16 04:31:36,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36" (1/1) ... [2021-12-16 04:31:36,479 INFO L137 Inliner]: procedures = 262, calls = 1347, calls flagged for inlining = 121, calls inlined = 116, statements flattened = 3303 [2021-12-16 04:31:36,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 04:31:36,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 04:31:36,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 04:31:36,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 04:31:36,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36" (1/1) ... [2021-12-16 04:31:36,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36" (1/1) ... [2021-12-16 04:31:36,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36" (1/1) ... [2021-12-16 04:31:36,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36" (1/1) ... [2021-12-16 04:31:36,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36" (1/1) ... [2021-12-16 04:31:36,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36" (1/1) ... [2021-12-16 04:31:36,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36" (1/1) ... [2021-12-16 04:31:36,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 04:31:36,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 04:31:36,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 04:31:36,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 04:31:36,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36" (1/1) ... [2021-12-16 04:31:36,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 04:31:36,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:31:36,654 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) [2021-12-16 04:31:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2021-12-16 04:31:36,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2021-12-16 04:31:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-12-16 04:31:36,680 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-12-16 04:31:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 04:31:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 04:31:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-16 04:31:36,680 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-16 04:31:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2021-12-16 04:31:36,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2021-12-16 04:31:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 04:31:36,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 04:31:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-16 04:31:36,681 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-16 04:31:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset_after_host_error [2021-12-16 04:31:36,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset_after_host_error [2021-12-16 04:31:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-16 04:31:36,681 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-16 04:31:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-16 04:31:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-16 04:31:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 04:31:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 04:31:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-16 04:31:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-16 04:31:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2021-12-16 04:31:36,682 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2021-12-16 04:31:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 04:31:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 04:31:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 04:31:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 04:31:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-12-16 04:31:36,660 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 [2021-12-16 04:31:36,683 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-12-16 04:31:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-16 04:31:36,684 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-16 04:31:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2021-12-16 04:31:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2021-12-16 04:31:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-16 04:31:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-16 04:31:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-12-16 04:31:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-12-16 04:31:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2021-12-16 04:31:36,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2021-12-16 04:31:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-12-16 04:31:36,686 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-12-16 04:31:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 04:31:36,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 04:31:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-16 04:31:36,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-16 04:31:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-16 04:31:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-16 04:31:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-12-16 04:31:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-12-16 04:31:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2021-12-16 04:31:36,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2021-12-16 04:31:36,687 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2021-12-16 04:31:36,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2021-12-16 04:31:36,688 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-12-16 04:31:36,688 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-12-16 04:31:36,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 04:31:36,689 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-16 04:31:36,690 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-16 04:31:36,690 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-16 04:31:36,690 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-16 04:31:36,690 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-12-16 04:31:36,690 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-12-16 04:31:36,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 04:31:36,690 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-16 04:31:36,690 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-16 04:31:36,691 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-16 04:31:36,691 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-16 04:31:36,691 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-12-16 04:31:36,691 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-12-16 04:31:36,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-16 04:31:36,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-16 04:31:36,691 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2021-12-16 04:31:36,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2021-12-16 04:31:36,692 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-16 04:31:36,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-16 04:31:36,692 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2021-12-16 04:31:36,692 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2021-12-16 04:31:36,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 04:31:36,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 04:31:36,693 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2021-12-16 04:31:36,693 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2021-12-16 04:31:36,693 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-16 04:31:36,693 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-16 04:31:36,693 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-16 04:31:36,693 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-16 04:31:36,693 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-16 04:31:36,694 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-16 04:31:36,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 04:31:36,694 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-12-16 04:31:36,694 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-12-16 04:31:36,694 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-16 04:31:36,695 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-16 04:31:36,695 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2021-12-16 04:31:36,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2021-12-16 04:31:36,695 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2021-12-16 04:31:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2021-12-16 04:31:36,696 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2021-12-16 04:31:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2021-12-16 04:31:36,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 04:31:36,696 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioctl [2021-12-16 04:31:36,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioctl [2021-12-16 04:31:36,697 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-16 04:31:36,697 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-16 04:31:36,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 04:31:36,697 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-16 04:31:36,697 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-16 04:31:36,697 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-16 04:31:36,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-16 04:31:36,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 04:31:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 04:31:36,698 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-16 04:31:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-16 04:31:36,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-16 04:31:36,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-16 04:31:36,699 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-12-16 04:31:36,699 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-12-16 04:31:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-16 04:31:36,701 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-16 04:31:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 04:31:36,701 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-16 04:31:36,701 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-16 04:31:36,702 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-16 04:31:36,703 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-16 04:31:36,703 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-12-16 04:31:36,703 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-12-16 04:31:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 04:31:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 04:31:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2021-12-16 04:31:36,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2021-12-16 04:31:36,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-16 04:31:36,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-16 04:31:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2021-12-16 04:31:36,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2021-12-16 04:31:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 04:31:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2021-12-16 04:31:36,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2021-12-16 04:31:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-16 04:31:36,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-16 04:31:36,708 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2021-12-16 04:31:36,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2021-12-16 04:31:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 04:31:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-16 04:31:36,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-16 04:31:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 04:31:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-16 04:31:36,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-16 04:31:36,709 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-12-16 04:31:36,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-12-16 04:31:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2021-12-16 04:31:36,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2021-12-16 04:31:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-12-16 04:31:36,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-12-16 04:31:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2021-12-16 04:31:36,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2021-12-16 04:31:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-16 04:31:36,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-16 04:31:36,710 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-16 04:31:36,710 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-16 04:31:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2021-12-16 04:31:36,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2021-12-16 04:31:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-16 04:31:36,711 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-16 04:31:36,711 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2021-12-16 04:31:36,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2021-12-16 04:31:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-12-16 04:31:36,712 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-12-16 04:31:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_change_mtu [2021-12-16 04:31:36,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_change_mtu [2021-12-16 04:31:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-16 04:31:36,712 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-16 04:31:36,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 04:31:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2021-12-16 04:31:36,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2021-12-16 04:31:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2021-12-16 04:31:36,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2021-12-16 04:31:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-12-16 04:31:36,713 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-12-16 04:31:36,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 04:31:36,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 04:31:37,215 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 04:31:37,218 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 04:31:37,829 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 04:31:39,554 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 04:31:39,564 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 04:31:39,565 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 04:31:39,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:31:39 BoogieIcfgContainer [2021-12-16 04:31:39,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 04:31:39,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 04:31:39,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 04:31:39,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 04:31:39,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:31:34" (1/3) ... [2021-12-16 04:31:39,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b713add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:31:39, skipping insertion in model container [2021-12-16 04:31:39,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:31:36" (2/3) ... [2021-12-16 04:31:39,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b713add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:31:39, skipping insertion in model container [2021-12-16 04:31:39,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:31:39" (3/3) ... [2021-12-16 04:31:39,572 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-16 04:31:39,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 04:31:39,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 04:31:39,606 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 04:31:39,611 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 [2021-12-16 04:31:39,611 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 04:31:39,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) [2021-12-16 04:31:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-16 04:31:39,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:31:39,665 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:31:39,666 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:31:39,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:31:39,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1357410998, now seen corresponding path program 1 times [2021-12-16 04:31:39,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:31:39,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287119005] [2021-12-16 04:31:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:31:39,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:31:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:39,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:31:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:31:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:31:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:31:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 04:31:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 04:31:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 04:31:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 04:31:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 04:31:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-16 04:31:40,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:31:40,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287119005] [2021-12-16 04:31:40,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287119005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:31:40,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:31:40,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 04:31:40,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669796887] [2021-12-16 04:31:40,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:31:40,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 04:31:40,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:31:40,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 04:31:40,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 04:31:40,314 INFO L87 Difference]: Start difference. First operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 04:31:44,768 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:31:46,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:31:46,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:31:46,997 INFO L93 Difference]: Finished difference Result 2992 states and 4288 transitions. [2021-12-16 04:31:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 04:31:46,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2021-12-16 04:31:47,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:31:47,033 INFO L225 Difference]: With dead ends: 2992 [2021-12-16 04:31:47,033 INFO L226 Difference]: Without dead ends: 1590 [2021-12-16 04:31:47,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-16 04:31:47,071 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1036 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 1084 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1084 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-16 04:31:47,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 3224 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1084 Valid, 1132 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-12-16 04:31:47,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-12-16 04:31:47,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1359. [2021-12-16 04:31:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 923 states have (on average 1.2838569880823403) internal successors, (1185), 945 states have internal predecessors, (1185), 354 states have call successors, (354), 82 states have call predecessors, (354), 81 states have return successors, (353), 353 states have call predecessors, (353), 353 states have call successors, (353) [2021-12-16 04:31:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1892 transitions. [2021-12-16 04:31:47,223 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1892 transitions. Word has length 121 [2021-12-16 04:31:47,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:31:47,224 INFO L470 AbstractCegarLoop]: Abstraction has 1359 states and 1892 transitions. [2021-12-16 04:31:47,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 04:31:47,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1892 transitions. [2021-12-16 04:31:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-16 04:31:47,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:31:47,232 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:31:47,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 04:31:47,232 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:31:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:31:47,232 INFO L85 PathProgramCache]: Analyzing trace with hash -874608722, now seen corresponding path program 1 times [2021-12-16 04:31:47,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:31:47,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200595468] [2021-12-16 04:31:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:31:47,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:31:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:31:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:31:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:31:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:31:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 04:31:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 04:31:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 04:31:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 04:31:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 04:31:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-16 04:31:47,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:31:47,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200595468] [2021-12-16 04:31:47,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200595468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:31:47,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:31:47,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 04:31:47,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953750794] [2021-12-16 04:31:47,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:31:47,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 04:31:47,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:31:47,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 04:31:47,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 04:31:47,528 INFO L87 Difference]: Start difference. First operand 1359 states and 1892 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 04:31:53,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:31:58,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:31:58,185 INFO L93 Difference]: Finished difference Result 4502 states and 6412 transitions. [2021-12-16 04:31:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 04:31:58,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 121 [2021-12-16 04:31:58,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:31:58,202 INFO L225 Difference]: With dead ends: 4502 [2021-12-16 04:31:58,202 INFO L226 Difference]: Without dead ends: 3164 [2021-12-16 04:31:58,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-16 04:31:58,209 INFO L933 BasicCegarLoop]: 2042 mSDtfsCounter, 3668 mSDsluCounter, 6500 mSDsCounter, 0 mSdLazyCounter, 3797 mSolverCounterSat, 2424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3884 SdHoareTripleChecker+Valid, 8542 SdHoareTripleChecker+Invalid, 6221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2424 IncrementalHoareTripleChecker+Valid, 3797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-12-16 04:31:58,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3884 Valid, 8542 Invalid, 6221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2424 Valid, 3797 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2021-12-16 04:31:58,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2021-12-16 04:31:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2724. [2021-12-16 04:31:58,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 1851 states have (on average 1.283090221501891) internal successors, (2375), 1897 states have internal predecessors, (2375), 706 states have call successors, (706), 163 states have call predecessors, (706), 166 states have return successors, (727), 707 states have call predecessors, (727), 705 states have call successors, (727) [2021-12-16 04:31:58,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3808 transitions. [2021-12-16 04:31:58,304 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3808 transitions. Word has length 121 [2021-12-16 04:31:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:31:58,304 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3808 transitions. [2021-12-16 04:31:58,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 04:31:58,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3808 transitions. [2021-12-16 04:31:58,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-16 04:31:58,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:31:58,309 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:31:58,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 04:31:58,309 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:31:58,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:31:58,310 INFO L85 PathProgramCache]: Analyzing trace with hash -967648419, now seen corresponding path program 1 times [2021-12-16 04:31:58,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:31:58,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826343741] [2021-12-16 04:31:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:31:58,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:31:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:31:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:31:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:31:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:31:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:31:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:31:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 04:31:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 04:31:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 04:31:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 04:31:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 04:31:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:31:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-16 04:31:58,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:31:58,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826343741] [2021-12-16 04:31:58,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826343741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:31:58,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:31:58,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 04:31:58,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575906419] [2021-12-16 04:31:58,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:31:58,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 04:31:58,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:31:58,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 04:31:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 04:31:58,636 INFO L87 Difference]: Start difference. First operand 2724 states and 3808 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 04:32:04,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:32:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:32:07,166 INFO L93 Difference]: Finished difference Result 9009 states and 12892 transitions. [2021-12-16 04:32:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 04:32:07,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 122 [2021-12-16 04:32:07,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:32:07,198 INFO L225 Difference]: With dead ends: 9009 [2021-12-16 04:32:07,198 INFO L226 Difference]: Without dead ends: 6306 [2021-12-16 04:32:07,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-16 04:32:07,211 INFO L933 BasicCegarLoop]: 1972 mSDtfsCounter, 4797 mSDsluCounter, 5633 mSDsCounter, 0 mSdLazyCounter, 2984 mSolverCounterSat, 3532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5013 SdHoareTripleChecker+Valid, 7605 SdHoareTripleChecker+Invalid, 6516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3532 IncrementalHoareTripleChecker+Valid, 2984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-16 04:32:07,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5013 Valid, 7605 Invalid, 6516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3532 Valid, 2984 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-12-16 04:32:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2021-12-16 04:32:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 5487. [2021-12-16 04:32:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 3730 states have (on average 1.2823056300268096) internal successors, (4783), 3826 states have internal predecessors, (4783), 1415 states have call successors, (1415), 326 states have call predecessors, (1415), 341 states have return successors, (1524), 1422 states have call predecessors, (1524), 1414 states have call successors, (1524) [2021-12-16 04:32:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 7722 transitions. [2021-12-16 04:32:07,423 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 7722 transitions. Word has length 122 [2021-12-16 04:32:07,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:32:07,423 INFO L470 AbstractCegarLoop]: Abstraction has 5487 states and 7722 transitions. [2021-12-16 04:32:07,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 04:32:07,424 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 7722 transitions. [2021-12-16 04:32:07,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 04:32:07,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:32:07,426 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:32:07,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 04:32:07,426 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:32:07,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:32:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1203194411, now seen corresponding path program 1 times [2021-12-16 04:32:07,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:32:07,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662872206] [2021-12-16 04:32:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:32:07,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:32:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:32:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:32:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:32:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:32:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 04:32:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 04:32:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 04:32:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 04:32:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 04:32:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-16 04:32:07,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:32:07,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662872206] [2021-12-16 04:32:07,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662872206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:32:07,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:32:07,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 04:32:07,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751206396] [2021-12-16 04:32:07,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:32:07,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 04:32:07,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:32:07,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 04:32:07,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 04:32:07,700 INFO L87 Difference]: Start difference. First operand 5487 states and 7722 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 04:32:15,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:32:15,252 INFO L93 Difference]: Finished difference Result 18067 states and 25992 transitions. [2021-12-16 04:32:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 04:32:15,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2021-12-16 04:32:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:32:15,324 INFO L225 Difference]: With dead ends: 18067 [2021-12-16 04:32:15,324 INFO L226 Difference]: Without dead ends: 12601 [2021-12-16 04:32:15,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-16 04:32:15,351 INFO L933 BasicCegarLoop]: 1964 mSDtfsCounter, 3794 mSDsluCounter, 6306 mSDsCounter, 0 mSdLazyCounter, 3716 mSolverCounterSat, 2483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4011 SdHoareTripleChecker+Valid, 8270 SdHoareTripleChecker+Invalid, 6199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2483 IncrementalHoareTripleChecker+Valid, 3716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-16 04:32:15,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4011 Valid, 8270 Invalid, 6199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2483 Valid, 3716 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-12-16 04:32:15,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-12-16 04:32:15,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 10970. [2021-12-16 04:32:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10970 states, 7461 states have (on average 1.2814636107760353) internal successors, (9561), 7653 states have internal predecessors, (9561), 2823 states have call successors, (2823), 654 states have call predecessors, (2823), 685 states have return successors, (3130), 2838 states have call predecessors, (3130), 2822 states have call successors, (3130) [2021-12-16 04:32:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10970 states to 10970 states and 15514 transitions. [2021-12-16 04:32:15,841 INFO L78 Accepts]: Start accepts. Automaton has 10970 states and 15514 transitions. Word has length 123 [2021-12-16 04:32:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:32:15,842 INFO L470 AbstractCegarLoop]: Abstraction has 10970 states and 15514 transitions. [2021-12-16 04:32:15,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 04:32:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 10970 states and 15514 transitions. [2021-12-16 04:32:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-16 04:32:15,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:32:15,845 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:32:15,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 04:32:15,846 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:32:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:32:15,846 INFO L85 PathProgramCache]: Analyzing trace with hash -292898560, now seen corresponding path program 1 times [2021-12-16 04:32:15,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:32:15,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469203251] [2021-12-16 04:32:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:32:15,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:32:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:32:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:15,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:32:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:15,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:15,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:32:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:16,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:32:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:16,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 04:32:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:16,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 04:32:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 04:32:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:16,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 04:32:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:16,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 04:32:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-16 04:32:16,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:32:16,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469203251] [2021-12-16 04:32:16,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469203251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:32:16,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 04:32:16,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 04:32:16,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980248315] [2021-12-16 04:32:16,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:32:16,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 04:32:16,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:32:16,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 04:32:16,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 04:32:16,080 INFO L87 Difference]: Start difference. First operand 10970 states and 15514 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 04:32:24,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:32:31,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:32:34,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 04:32:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:32:34,508 INFO L93 Difference]: Finished difference Result 35652 states and 51556 transitions. [2021-12-16 04:32:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 04:32:34,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 120 [2021-12-16 04:32:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:32:34,732 INFO L225 Difference]: With dead ends: 35652 [2021-12-16 04:32:34,732 INFO L226 Difference]: Without dead ends: 24703 [2021-12-16 04:32:34,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-16 04:32:34,781 INFO L933 BasicCegarLoop]: 2689 mSDtfsCounter, 3171 mSDsluCounter, 8154 mSDsCounter, 0 mSdLazyCounter, 4508 mSolverCounterSat, 1983 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3387 SdHoareTripleChecker+Valid, 10843 SdHoareTripleChecker+Invalid, 6493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1983 IncrementalHoareTripleChecker+Valid, 4508 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2021-12-16 04:32:34,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3387 Valid, 10843 Invalid, 6493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1983 Valid, 4508 Invalid, 2 Unknown, 0 Unchecked, 17.8s Time] [2021-12-16 04:32:34,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24703 states. [2021-12-16 04:32:35,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24703 to 21519. [2021-12-16 04:32:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21519 states, 14619 states have (on average 1.2803201313359327) internal successors, (18717), 15011 states have internal predecessors, (18717), 5545 states have call successors, (5545), 1291 states have call predecessors, (5545), 1354 states have return successors, (6350), 5556 states have call predecessors, (6350), 5544 states have call successors, (6350) [2021-12-16 04:32:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21519 states to 21519 states and 30612 transitions. [2021-12-16 04:32:35,513 INFO L78 Accepts]: Start accepts. Automaton has 21519 states and 30612 transitions. Word has length 120 [2021-12-16 04:32:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:32:35,513 INFO L470 AbstractCegarLoop]: Abstraction has 21519 states and 30612 transitions. [2021-12-16 04:32:35,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 04:32:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 21519 states and 30612 transitions. [2021-12-16 04:32:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-16 04:32:35,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:32:35,517 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:32:35,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 04:32:35,518 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:32:35,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:32:35,518 INFO L85 PathProgramCache]: Analyzing trace with hash 55159783, now seen corresponding path program 1 times [2021-12-16 04:32:35,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:32:35,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073213276] [2021-12-16 04:32:35,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:32:35,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:32:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:32:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:32:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:32:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:32:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 04:32:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 04:32:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 04:32:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 04:32:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-16 04:32:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 04:32:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-16 04:32:35,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 04:32:35,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073213276] [2021-12-16 04:32:35,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073213276] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 04:32:35,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538712589] [2021-12-16 04:32:35,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:32:35,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 04:32:35,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 04:32:35,800 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) [2021-12-16 04:32:35,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 04:32:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:36,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 2126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 04:32:36,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 04:32:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-16 04:32:36,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 04:32:36,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538712589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 04:32:36,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 04:32:36,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-16 04:32:36,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102307371] [2021-12-16 04:32:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 04:32:36,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 04:32:36,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 04:32:36,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 04:32:36,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-12-16 04:32:36,840 INFO L87 Difference]: Start difference. First operand 21519 states and 30612 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 04:32:37,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 04:32:37,739 INFO L93 Difference]: Finished difference Result 53797 states and 76670 transitions. [2021-12-16 04:32:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 04:32:37,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 133 [2021-12-16 04:32:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 04:32:37,902 INFO L225 Difference]: With dead ends: 53797 [2021-12-16 04:32:37,902 INFO L226 Difference]: Without dead ends: 32299 [2021-12-16 04:32:37,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-12-16 04:32:37,977 INFO L933 BasicCegarLoop]: 2926 mSDtfsCounter, 1918 mSDsluCounter, 13568 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 16494 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 04:32:37,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 16494 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 04:32:38,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32299 states. [2021-12-16 04:32:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32299 to 32150. [2021-12-16 04:32:38,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32150 states, 21851 states have (on average 1.2807651823715163) internal successors, (27986), 22443 states have internal predecessors, (27986), 8267 states have call successors, (8267), 1928 states have call predecessors, (8267), 2031 states have return successors, (9658), 8282 states have call predecessors, (9658), 8266 states have call successors, (9658) [2021-12-16 04:32:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32150 states to 32150 states and 45911 transitions. [2021-12-16 04:32:39,124 INFO L78 Accepts]: Start accepts. Automaton has 32150 states and 45911 transitions. Word has length 133 [2021-12-16 04:32:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 04:32:39,125 INFO L470 AbstractCegarLoop]: Abstraction has 32150 states and 45911 transitions. [2021-12-16 04:32:39,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-16 04:32:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 32150 states and 45911 transitions. [2021-12-16 04:32:39,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 04:32:39,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 04:32:39,131 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 04:32:39,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 04:32:39,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-16 04:32:39,346 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 04:32:39,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 04:32:39,348 INFO L85 PathProgramCache]: Analyzing trace with hash 484807700, now seen corresponding path program 1 times [2021-12-16 04:32:39,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 04:32:39,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232587904] [2021-12-16 04:32:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 04:32:39,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 04:32:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 04:32:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 04:32:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 04:32:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 04:32:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 04:32:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 04:32:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 04:32:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 04:32:39,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 04:32:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat