./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.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 4295d1eb99eb4c4e306792d8730363a971cf6332e7c089b8c1be6cbddd5edcb9 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 09:11:12,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 09:11:12,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 09:11:12,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 09:11:12,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 09:11:12,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 09:11:12,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 09:11:12,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 09:11:12,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 09:11:12,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 09:11:12,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 09:11:12,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 09:11:12,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 09:11:12,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 09:11:12,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 09:11:12,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 09:11:12,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 09:11:12,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 09:11:12,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 09:11:12,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 09:11:12,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 09:11:12,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 09:11:12,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 09:11:12,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 09:11:12,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 09:11:12,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 09:11:12,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 09:11:12,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 09:11:12,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 09:11:12,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 09:11:12,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 09:11:12,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 09:11:12,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 09:11:12,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 09:11:12,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 09:11:12,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 09:11:12,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 09:11:12,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 09:11:12,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 09:11:12,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 09:11:12,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 09:11:12,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 09:11:12,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 09:11:12,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 09:11:12,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 09:11:12,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 09:11:12,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 09:11:12,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 09:11:12,861 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 09:11:12,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 09:11:12,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 09:11:12,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 09:11:12,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 09:11:12,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 09:11:12,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 09:11:12,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 09:11:12,864 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 09:11:12,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 09:11:12,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 09:11:12,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 09:11:12,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 09:11:12,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 09:11:12,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 09:11:12,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 09:11:12,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 09:11:12,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 09:11:12,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 09:11:12,866 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 09:11:12,866 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 09:11:12,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 09:11:12,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 09:11:12,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4295d1eb99eb4c4e306792d8730363a971cf6332e7c089b8c1be6cbddd5edcb9 [2021-11-04 09:11:13,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 09:11:13,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 09:11:13,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 09:11:13,119 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 09:11:13,120 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 09:11:13,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-04 09:11:13,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408f3cab4/912d4263dea642e087f012a3efd26bed/FLAG9f73781dc [2021-11-04 09:11:13,984 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 09:11:13,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-04 09:11:14,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408f3cab4/912d4263dea642e087f012a3efd26bed/FLAG9f73781dc [2021-11-04 09:11:14,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408f3cab4/912d4263dea642e087f012a3efd26bed [2021-11-04 09:11:14,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 09:11:14,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 09:11:14,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 09:11:14,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 09:11:14,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 09:11:14,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:11:14" (1/1) ... [2021-11-04 09:11:14,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281e94db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:14, skipping insertion in model container [2021-11-04 09:11:14,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:11:14" (1/1) ... [2021-11-04 09:11:14,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 09:11:14,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 09:11:19,151 WARN L228 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487689,487702] [2021-11-04 09:11:19,154 WARN L228 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487834,487847] [2021-11-04 09:11:19,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 09:11:19,254 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 09:11:19,601 WARN L228 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487689,487702] [2021-11-04 09:11:19,602 WARN L228 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487834,487847] [2021-11-04 09:11:19,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 09:11:19,868 INFO L208 MainTranslator]: Completed translation [2021-11-04 09:11:19,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19 WrapperNode [2021-11-04 09:11:19,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 09:11:19,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 09:11:19,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 09:11:19,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 09:11:19,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19" (1/1) ... [2021-11-04 09:11:19,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19" (1/1) ... [2021-11-04 09:11:21,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 09:11:21,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 09:11:21,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 09:11:21,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 09:11:21,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19" (1/1) ... [2021-11-04 09:11:21,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19" (1/1) ... [2021-11-04 09:11:21,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19" (1/1) ... [2021-11-04 09:11:21,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19" (1/1) ... [2021-11-04 09:11:23,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19" (1/1) ... [2021-11-04 09:11:23,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19" (1/1) ... [2021-11-04 09:11:23,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19" (1/1) ... [2021-11-04 09:11:23,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 09:11:23,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 09:11:23,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 09:11:23,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 09:11:23,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19" (1/1) ... [2021-11-04 09:11:23,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 09:11:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 09:11:23,967 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) [2021-11-04 09:11:23,975 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 [2021-11-04 09:11:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw_vf [2021-11-04 09:11:24,006 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw_vf [2021-11-04 09:11:24,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 09:11:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 09:11:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 09:11:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 09:11:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 09:11:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 09:11:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_posted_mbx [2021-11-04 09:11:24,007 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_posted_mbx [2021-11-04 09:11:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_hw_vf [2021-11-04 09:11:24,008 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_hw_vf [2021-11-04 09:11:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 09:11:24,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 09:11:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_ack [2021-11-04 09:11:24,008 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_ack [2021-11-04 09:11:24,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 09:11:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 09:11:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set_vf [2021-11-04 09:11:24,009 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set_vf [2021-11-04 09:11:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link_vf [2021-11-04 09:11:24,009 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link_vf [2021-11-04 09:11:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 09:11:24,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 09:11:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-04 09:11:24,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-04 09:11:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 09:11:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-04 09:11:24,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-04 09:11:24,010 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_msg [2021-11-04 09:11:24,010 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_msg [2021-11-04 09:11:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 09:11:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_posted_mbx [2021-11-04 09:11:24,011 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_posted_mbx [2021-11-04 09:11:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 09:11:24,011 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-04 09:11:34,093 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-04 09:11:34,094 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-04 09:11:34,094 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 09:11:34,094 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 09:11:34,097 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 09:11:34,097 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 09:11:34,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 09:11:34,154 INFO L299 CfgBuilder]: Removed 9881 assume(true) statements. [2021-11-04 09:11:34,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:11:34 BoogieIcfgContainer [2021-11-04 09:11:34,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 09:11:34,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 09:11:34,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 09:11:34,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 09:11:34,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 09:11:14" (1/3) ... [2021-11-04 09:11:34,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9a2f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:11:34, skipping insertion in model container [2021-11-04 09:11:34,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:11:19" (2/3) ... [2021-11-04 09:11:34,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9a2f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:11:34, skipping insertion in model container [2021-11-04 09:11:34,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:11:34" (3/3) ... [2021-11-04 09:11:34,177 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-04 09:11:34,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 09:11:34,182 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-11-04 09:11:34,262 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 09:11:34,269 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 [2021-11-04 09:11:34,269 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-11-04 09:11:34,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 10035 states, 9864 states have (on average 1.3700324412003244) internal successors, (13514), 9909 states have internal predecessors, (13514), 115 states have call successors, (115), 10 states have call predecessors, (115), 10 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2021-11-04 09:11:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-04 09:11:34,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:11:34,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:11:34,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-04 09:11:34,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:11:34,437 INFO L85 PathProgramCache]: Analyzing trace with hash -670838690, now seen corresponding path program 1 times [2021-11-04 09:11:34,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:11:34,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308730262] [2021-11-04 09:11:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:11:34,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:11:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:11:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:11:35,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:11:35,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308730262] [2021-11-04 09:11:35,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308730262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:11:35,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:11:35,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:11:35,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206187880] [2021-11-04 09:11:35,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:11:35,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:11:35,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:11:35,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:11:35,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:11:35,527 INFO L87 Difference]: Start difference. First operand has 10035 states, 9864 states have (on average 1.3700324412003244) internal successors, (13514), 9909 states have internal predecessors, (13514), 115 states have call successors, (115), 10 states have call predecessors, (115), 10 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:11:38,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:12:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:12:32,555 INFO L93 Difference]: Finished difference Result 23057 states and 31634 transitions. [2021-11-04 09:12:32,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:12:32,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-04 09:12:32,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:12:32,636 INFO L225 Difference]: With dead ends: 23057 [2021-11-04 09:12:32,636 INFO L226 Difference]: Without dead ends: 12845 [2021-11-04 09:12:32,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:12:32,673 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 4404 mSDsluCounter, 13452 mSDsCounter, 0 mSdLazyCounter, 26058 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50421.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4404 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 26080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 125.62ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 26058 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55599.31ms IncrementalHoareTripleChecker+Time [2021-11-04 09:12:32,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4404 Valid, 1052 Invalid, 26080 Unknown, 0 Unchecked, 125.62ms Time], IncrementalHoareTripleChecker [21 Valid, 26058 Invalid, 1 Unknown, 0 Unchecked, 55599.31ms Time] [2021-11-04 09:12:32,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12845 states. [2021-11-04 09:12:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12845 to 12813. [2021-11-04 09:12:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12813 states, 12586 states have (on average 1.3380740505323374) internal successors, (16841), 12631 states have internal predecessors, (16841), 161 states have call successors, (161), 20 states have call predecessors, (161), 20 states have return successors, (161), 161 states have call predecessors, (161), 161 states have call successors, (161) [2021-11-04 09:12:33,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12813 states to 12813 states and 17163 transitions. [2021-11-04 09:12:33,206 INFO L78 Accepts]: Start accepts. Automaton has 12813 states and 17163 transitions. Word has length 103 [2021-11-04 09:12:33,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:12:33,208 INFO L470 AbstractCegarLoop]: Abstraction has 12813 states and 17163 transitions. [2021-11-04 09:12:33,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:12:33,210 INFO L276 IsEmpty]: Start isEmpty. Operand 12813 states and 17163 transitions. [2021-11-04 09:12:33,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-04 09:12:33,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:12:33,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:12:33,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 09:12:33,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-04 09:12:33,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:12:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1026933273, now seen corresponding path program 1 times [2021-11-04 09:12:33,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:12:33,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140818397] [2021-11-04 09:12:33,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:12:33,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:12:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:12:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:12:33,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:12:33,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140818397] [2021-11-04 09:12:33,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140818397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:12:33,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:12:33,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:12:33,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162631084] [2021-11-04 09:12:33,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:12:33,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:12:33,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:12:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:12:33,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:12:33,623 INFO L87 Difference]: Start difference. First operand 12813 states and 17163 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:12:35,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:13:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:13:32,808 INFO L93 Difference]: Finished difference Result 32510 states and 43541 transitions. [2021-11-04 09:13:32,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:13:32,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-04 09:13:32,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:13:32,890 INFO L225 Difference]: With dead ends: 32510 [2021-11-04 09:13:32,891 INFO L226 Difference]: Without dead ends: 19893 [2021-11-04 09:13:32,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:13:32,928 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 9107 mSDsluCounter, 12786 mSDsCounter, 0 mSdLazyCounter, 25393 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51006.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9107 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 25402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 103.83ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57838.68ms IncrementalHoareTripleChecker+Time [2021-11-04 09:13:32,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9107 Valid, 548 Invalid, 25402 Unknown, 0 Unchecked, 103.83ms Time], IncrementalHoareTripleChecker [9 Valid, 25393 Invalid, 0 Unknown, 0 Unchecked, 57838.68ms Time] [2021-11-04 09:13:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19893 states. [2021-11-04 09:13:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19893 to 19265. [2021-11-04 09:13:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19265 states, 18940 states have (on average 1.3372756071805703) internal successors, (25328), 18987 states have internal predecessors, (25328), 249 states have call successors, (249), 30 states have call predecessors, (249), 30 states have return successors, (249), 247 states have call predecessors, (249), 249 states have call successors, (249) [2021-11-04 09:13:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19265 states to 19265 states and 25826 transitions. [2021-11-04 09:13:33,587 INFO L78 Accepts]: Start accepts. Automaton has 19265 states and 25826 transitions. Word has length 118 [2021-11-04 09:13:33,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:13:33,587 INFO L470 AbstractCegarLoop]: Abstraction has 19265 states and 25826 transitions. [2021-11-04 09:13:33,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:13:33,588 INFO L276 IsEmpty]: Start isEmpty. Operand 19265 states and 25826 transitions. [2021-11-04 09:13:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-04 09:13:33,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:13:33,595 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:13:33,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 09:13:33,596 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-04 09:13:33,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:13:33,598 INFO L85 PathProgramCache]: Analyzing trace with hash -388310239, now seen corresponding path program 1 times [2021-11-04 09:13:33,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:13:33,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465445110] [2021-11-04 09:13:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:13:33,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:13:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:13:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:13:33,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:13:33,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465445110] [2021-11-04 09:13:33,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465445110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:13:33,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:13:33,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:13:33,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962368037] [2021-11-04 09:13:33,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:13:33,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:13:33,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:13:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:13:33,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:13:33,972 INFO L87 Difference]: Start difference. First operand 19265 states and 25826 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:13:36,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:13:43,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:14:29,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:14:29,404 INFO L93 Difference]: Finished difference Result 41738 states and 56037 transitions. [2021-11-04 09:14:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:14:29,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-04 09:14:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:14:29,467 INFO L225 Difference]: With dead ends: 41738 [2021-11-04 09:14:29,467 INFO L226 Difference]: Without dead ends: 22669 [2021-11-04 09:14:29,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:14:29,510 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 4223 mSDsluCounter, 12869 mSDsCounter, 0 mSdLazyCounter, 29555 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48300.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4223 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 29571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.23ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 29555 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54470.14ms IncrementalHoareTripleChecker+Time [2021-11-04 09:14:29,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4223 Valid, 552 Invalid, 29571 Unknown, 0 Unchecked, 68.23ms Time], IncrementalHoareTripleChecker [15 Valid, 29555 Invalid, 1 Unknown, 0 Unchecked, 54470.14ms Time] [2021-11-04 09:14:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22669 states. [2021-11-04 09:14:29,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22669 to 22633. [2021-11-04 09:14:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22633 states, 22252 states have (on average 1.3387111270896999) internal successors, (29789), 22299 states have internal predecessors, (29789), 295 states have call successors, (295), 40 states have call predecessors, (295), 40 states have return successors, (295), 293 states have call predecessors, (295), 295 states have call successors, (295) [2021-11-04 09:14:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22633 states to 22633 states and 30379 transitions. [2021-11-04 09:14:30,032 INFO L78 Accepts]: Start accepts. Automaton has 22633 states and 30379 transitions. Word has length 135 [2021-11-04 09:14:30,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:14:30,033 INFO L470 AbstractCegarLoop]: Abstraction has 22633 states and 30379 transitions. [2021-11-04 09:14:30,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:14:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 22633 states and 30379 transitions. [2021-11-04 09:14:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-04 09:14:30,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:14:30,037 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:14:30,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 09:14:30,038 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-04 09:14:30,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:14:30,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1221308200, now seen corresponding path program 1 times [2021-11-04 09:14:30,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:14:30,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051216094] [2021-11-04 09:14:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:14:30,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:14:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:14:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 09:14:30,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:14:30,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051216094] [2021-11-04 09:14:30,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051216094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:14:30,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:14:30,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:14:30,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982957383] [2021-11-04 09:14:30,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:14:30,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:14:30,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:14:30,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:14:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:14:30,327 INFO L87 Difference]: Start difference. First operand 22633 states and 30379 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:14:31,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:14:37,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:15:10,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:15:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:15:27,581 INFO L93 Difference]: Finished difference Result 48466 states and 65127 transitions. [2021-11-04 09:15:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:15:27,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-11-04 09:15:27,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:15:27,669 INFO L225 Difference]: With dead ends: 48466 [2021-11-04 09:15:27,670 INFO L226 Difference]: Without dead ends: 26029 [2021-11-04 09:15:27,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:15:27,721 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 4217 mSDsluCounter, 12882 mSDsCounter, 0 mSdLazyCounter, 29534 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49387.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4217 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 29547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 167.34ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56208.08ms IncrementalHoareTripleChecker+Time [2021-11-04 09:15:27,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4217 Valid, 551 Invalid, 29547 Unknown, 0 Unchecked, 167.34ms Time], IncrementalHoareTripleChecker [13 Valid, 29534 Invalid, 0 Unknown, 0 Unchecked, 56208.08ms Time] [2021-11-04 09:15:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26029 states. [2021-11-04 09:15:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26029 to 25993. [2021-11-04 09:15:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25993 states, 25556 states have (on average 1.339881045547034) internal successors, (34242), 25603 states have internal predecessors, (34242), 341 states have call successors, (341), 50 states have call predecessors, (341), 50 states have return successors, (341), 339 states have call predecessors, (341), 341 states have call successors, (341) [2021-11-04 09:15:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25993 states to 25993 states and 34924 transitions. [2021-11-04 09:15:28,304 INFO L78 Accepts]: Start accepts. Automaton has 25993 states and 34924 transitions. Word has length 174 [2021-11-04 09:15:28,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:15:28,305 INFO L470 AbstractCegarLoop]: Abstraction has 25993 states and 34924 transitions. [2021-11-04 09:15:28,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:15:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 25993 states and 34924 transitions. [2021-11-04 09:15:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-04 09:15:28,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:15:28,309 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:15:28,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 09:15:28,313 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-04 09:15:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:15:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash 711835110, now seen corresponding path program 1 times [2021-11-04 09:15:28,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:15:28,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410816768] [2021-11-04 09:15:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:15:28,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:15:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:15:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 09:15:28,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:15:28,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410816768] [2021-11-04 09:15:28,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410816768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:15:28,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:15:28,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:15:28,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985292234] [2021-11-04 09:15:28,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:15:28,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:15:28,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:15:28,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:15:28,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:15:28,646 INFO L87 Difference]: Start difference. First operand 25993 states and 34924 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:15:29,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:15:36,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:15:38,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:15:39,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:16:25,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:16:25,687 INFO L93 Difference]: Finished difference Result 55406 states and 74518 transitions. [2021-11-04 09:16:25,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:16:25,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-11-04 09:16:25,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:16:25,780 INFO L225 Difference]: With dead ends: 55406 [2021-11-04 09:16:25,780 INFO L226 Difference]: Without dead ends: 29609 [2021-11-04 09:16:25,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:16:25,842 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 7679 mSDsluCounter, 9423 mSDsCounter, 0 mSdLazyCounter, 26166 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48925.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7679 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 26182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.57ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 26166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56038.56ms IncrementalHoareTripleChecker+Time [2021-11-04 09:16:25,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7679 Valid, 494 Invalid, 26182 Unknown, 0 Unchecked, 54.57ms Time], IncrementalHoareTripleChecker [16 Valid, 26166 Invalid, 0 Unknown, 0 Unchecked, 56038.56ms Time] [2021-11-04 09:16:25,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29609 states. [2021-11-04 09:16:26,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29609 to 29573. [2021-11-04 09:16:26,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29573 states, 29051 states have (on average 1.3408144297958762) internal successors, (38952), 29098 states have internal predecessors, (38952), 406 states have call successors, (406), 70 states have call predecessors, (406), 70 states have return successors, (406), 404 states have call predecessors, (406), 406 states have call successors, (406) [2021-11-04 09:16:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29573 states to 29573 states and 39764 transitions. [2021-11-04 09:16:26,652 INFO L78 Accepts]: Start accepts. Automaton has 29573 states and 39764 transitions. Word has length 174 [2021-11-04 09:16:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:16:26,653 INFO L470 AbstractCegarLoop]: Abstraction has 29573 states and 39764 transitions. [2021-11-04 09:16:26,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:16:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 29573 states and 39764 transitions. [2021-11-04 09:16:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-04 09:16:26,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:16:26,659 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:16:26,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 09:16:26,659 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-04 09:16:26,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:16:26,661 INFO L85 PathProgramCache]: Analyzing trace with hash 206494537, now seen corresponding path program 1 times [2021-11-04 09:16:26,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:16:26,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590382352] [2021-11-04 09:16:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:16:26,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:16:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:16:26,933 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-04 09:16:26,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:16:26,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590382352] [2021-11-04 09:16:26,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590382352] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:16:26,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:16:26,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:16:26,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964833630] [2021-11-04 09:16:26,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:16:26,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:16:26,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:16:26,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:16:26,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:16:26,936 INFO L87 Difference]: Start difference. First operand 29573 states and 39764 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:16:28,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:16:30,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:16:37,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:16:38,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:17:13,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:17:37,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:17:37,888 INFO L93 Difference]: Finished difference Result 62348 states and 83901 transitions. [2021-11-04 09:17:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:17:37,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-04 09:17:37,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:17:37,983 INFO L225 Difference]: With dead ends: 62348 [2021-11-04 09:17:37,983 INFO L226 Difference]: Without dead ends: 32971 [2021-11-04 09:17:38,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:17:38,052 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 4220 mSDsluCounter, 12880 mSDsCounter, 0 mSdLazyCounter, 27640 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60167.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 27653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 77.52ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27640 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69714.45ms IncrementalHoareTripleChecker+Time [2021-11-04 09:17:38,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4220 Valid, 536 Invalid, 27653 Unknown, 0 Unchecked, 77.52ms Time], IncrementalHoareTripleChecker [12 Valid, 27640 Invalid, 1 Unknown, 0 Unchecked, 69714.45ms Time] [2021-11-04 09:17:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32971 states. [2021-11-04 09:17:38,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32971 to 32935. [2021-11-04 09:17:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32935 states, 32357 states have (on average 1.3415026114905584) internal successors, (43407), 32404 states have internal predecessors, (43407), 452 states have call successors, (452), 80 states have call predecessors, (452), 80 states have return successors, (452), 450 states have call predecessors, (452), 452 states have call successors, (452) [2021-11-04 09:17:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32935 states to 32935 states and 44311 transitions. [2021-11-04 09:17:38,755 INFO L78 Accepts]: Start accepts. Automaton has 32935 states and 44311 transitions. Word has length 210 [2021-11-04 09:17:38,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:17:38,756 INFO L470 AbstractCegarLoop]: Abstraction has 32935 states and 44311 transitions. [2021-11-04 09:17:38,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:17:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 32935 states and 44311 transitions. [2021-11-04 09:17:38,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-04 09:17:38,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:17:38,762 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:17:38,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 09:17:38,764 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-04 09:17:38,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:17:38,764 INFO L85 PathProgramCache]: Analyzing trace with hash -302978553, now seen corresponding path program 1 times [2021-11-04 09:17:38,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:17:38,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626408204] [2021-11-04 09:17:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:17:38,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:17:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:17:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-04 09:17:39,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:17:39,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626408204] [2021-11-04 09:17:39,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626408204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:17:39,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:17:39,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:17:39,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394322353] [2021-11-04 09:17:39,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:17:39,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:17:39,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:17:39,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:17:39,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:17:39,072 INFO L87 Difference]: Start difference. First operand 32935 states and 44311 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:17:41,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:17:48,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:19:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:19:20,786 INFO L93 Difference]: Finished difference Result 69073 states and 93011 transitions. [2021-11-04 09:19:20,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:19:20,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-04 09:19:20,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:19:20,942 INFO L225 Difference]: With dead ends: 69073 [2021-11-04 09:19:20,943 INFO L226 Difference]: Without dead ends: 36334 [2021-11-04 09:19:21,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:19:21,033 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 4220 mSDsluCounter, 12865 mSDsCounter, 0 mSdLazyCounter, 29546 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82900.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4233 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 29561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 134.37ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 29546 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99703.83ms IncrementalHoareTripleChecker+Time [2021-11-04 09:19:21,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4233 Valid, 565 Invalid, 29561 Unknown, 0 Unchecked, 134.37ms Time], IncrementalHoareTripleChecker [13 Valid, 29546 Invalid, 2 Unknown, 0 Unchecked, 99703.83ms Time] [2021-11-04 09:19:21,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36334 states. [2021-11-04 09:19:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36334 to 36298. [2021-11-04 09:19:21,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36298 states, 35664 states have (on average 1.3420536114849708) internal successors, (47863), 35711 states have internal predecessors, (47863), 498 states have call successors, (498), 90 states have call predecessors, (498), 90 states have return successors, (511), 496 states have call predecessors, (511), 498 states have call successors, (511) [2021-11-04 09:19:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36298 states to 36298 states and 48872 transitions. [2021-11-04 09:19:21,990 INFO L78 Accepts]: Start accepts. Automaton has 36298 states and 48872 transitions. Word has length 210 [2021-11-04 09:19:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:19:21,991 INFO L470 AbstractCegarLoop]: Abstraction has 36298 states and 48872 transitions. [2021-11-04 09:19:21,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:19:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 36298 states and 48872 transitions. [2021-11-04 09:19:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-04 09:19:21,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:19:21,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:19:21,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 09:19:22,000 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-04 09:19:22,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:19:22,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1908348413, now seen corresponding path program 1 times [2021-11-04 09:19:22,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:19:22,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160043855] [2021-11-04 09:19:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:19:22,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:19:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:19:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-04 09:19:22,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:19:22,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160043855] [2021-11-04 09:19:22,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160043855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:19:22,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:19:22,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 09:19:22,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810100184] [2021-11-04 09:19:22,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:19:22,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:19:22,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:19:22,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:19:22,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:19:22,549 INFO L87 Difference]: Start difference. First operand 36298 states and 48872 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:19:23,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:19:28,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:20:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:20:23,216 INFO L93 Difference]: Finished difference Result 72424 states and 97698 transitions. [2021-11-04 09:20:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:20:23,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2021-11-04 09:20:23,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:20:23,358 INFO L225 Difference]: With dead ends: 72424 [2021-11-04 09:20:23,359 INFO L226 Difference]: Without dead ends: 36322 [2021-11-04 09:20:23,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:20:23,480 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 12645 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12674 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47093.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12694 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 12720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.58ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 12674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58965.29ms IncrementalHoareTripleChecker+Time [2021-11-04 09:20:23,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12694 Valid, 279 Invalid, 12720 Unknown, 0 Unchecked, 60.58ms Time], IncrementalHoareTripleChecker [45 Valid, 12674 Invalid, 1 Unknown, 0 Unchecked, 58965.29ms Time] [2021-11-04 09:20:23,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36322 states. [2021-11-04 09:20:24,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36322 to 36301. [2021-11-04 09:20:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36301 states, 35666 states have (on average 1.3374922895755061) internal successors, (47703), 35714 states have internal predecessors, (47703), 498 states have call successors, (498), 90 states have call predecessors, (498), 91 states have return successors, (544), 496 states have call predecessors, (544), 498 states have call successors, (544) [2021-11-04 09:20:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36301 states to 36301 states and 48745 transitions. [2021-11-04 09:20:24,399 INFO L78 Accepts]: Start accepts. Automaton has 36301 states and 48745 transitions. Word has length 232 [2021-11-04 09:20:24,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:20:24,400 INFO L470 AbstractCegarLoop]: Abstraction has 36301 states and 48745 transitions. [2021-11-04 09:20:24,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:20:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 36301 states and 48745 transitions. [2021-11-04 09:20:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-04 09:20:24,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:20:24,408 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:20:24,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 09:20:24,408 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-04 09:20:24,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:20:24,409 INFO L85 PathProgramCache]: Analyzing trace with hash 970706135, now seen corresponding path program 1 times [2021-11-04 09:20:24,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:20:24,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847661522] [2021-11-04 09:20:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:20:24,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:20:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:20:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-04 09:20:24,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:20:24,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847661522] [2021-11-04 09:20:24,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847661522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:20:24,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:20:24,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:20:24,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623347363] [2021-11-04 09:20:24,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:20:24,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:20:24,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:20:24,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:20:24,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:20:24,992 INFO L87 Difference]: Start difference. First operand 36301 states and 48745 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:20:27,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:20:34,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:22:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:22:29,574 INFO L93 Difference]: Finished difference Result 99140 states and 132428 transitions. [2021-11-04 09:22:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 09:22:29,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-11-04 09:22:29,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:22:29,754 INFO L225 Difference]: With dead ends: 99140 [2021-11-04 09:22:29,754 INFO L226 Difference]: Without dead ends: 63035 [2021-11-04 09:22:29,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:22:29,835 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 29462 mSDsluCounter, 9021 mSDsCounter, 0 mSdLazyCounter, 26207 mSolverCounterSat, 483 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95985.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29505 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 26692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 303.10ms SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 26207 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121432.97ms IncrementalHoareTripleChecker+Time [2021-11-04 09:22:29,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29505 Valid, 474 Invalid, 26692 Unknown, 0 Unchecked, 303.10ms Time], IncrementalHoareTripleChecker [483 Valid, 26207 Invalid, 2 Unknown, 0 Unchecked, 121432.97ms Time] [2021-11-04 09:22:29,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63035 states. [2021-11-04 09:22:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63035 to 62924. [2021-11-04 09:22:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62924 states, 61760 states have (on average 1.3188147668393781) internal successors, (81450), 61817 states have internal predecessors, (81450), 930 states have call successors, (930), 180 states have call predecessors, (930), 188 states have return successors, (1250), 926 states have call predecessors, (1250), 930 states have call successors, (1250) [2021-11-04 09:22:31,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62924 states to 62924 states and 83630 transitions. [2021-11-04 09:22:31,551 INFO L78 Accepts]: Start accepts. Automaton has 62924 states and 83630 transitions. Word has length 233 [2021-11-04 09:22:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:22:31,551 INFO L470 AbstractCegarLoop]: Abstraction has 62924 states and 83630 transitions. [2021-11-04 09:22:31,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:22:31,551 INFO L276 IsEmpty]: Start isEmpty. Operand 62924 states and 83630 transitions. [2021-11-04 09:22:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-04 09:22:31,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:22:31,558 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:22:31,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 09:22:31,559 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-04 09:22:31,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:22:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash 27232862, now seen corresponding path program 1 times [2021-11-04 09:22:31,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:22:31,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56313385] [2021-11-04 09:22:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:22:31,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:22:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:22:31,990 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-04 09:22:31,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:22:31,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56313385] [2021-11-04 09:22:31,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56313385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:22:31,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:22:31,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:22:31,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16965020] [2021-11-04 09:22:31,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:22:31,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:22:31,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:22:31,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:22:31,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:22:31,992 INFO L87 Difference]: Start difference. First operand 62924 states and 83630 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:22:34,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:22:42,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15