./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 5b36d44f 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-5b36d44 [2021-11-07 16:36:58,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:36:58,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:36:58,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:36:58,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:36:58,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:36:58,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:36:58,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:36:58,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:36:58,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:36:58,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:36:58,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:36:58,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:36:58,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:36:58,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:36:58,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:36:58,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:36:58,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:36:58,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:36:58,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:36:58,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:36:58,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:36:58,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:36:58,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:36:58,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:36:58,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:36:58,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:36:58,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:36:58,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:36:58,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:36:58,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:36:58,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:36:58,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:36:58,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:36:58,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:36:58,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:36:58,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:36:58,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:36:58,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:36:58,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:36:58,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:36:58,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:36:58,734 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:36:58,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:36:58,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:36:58,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:36:58,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:36:58,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:36:58,736 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:36:58,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:36:58,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:36:58,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:36:58,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:36:58,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:36:58,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:36:58,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:36:58,737 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:36:58,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:36:58,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:36:58,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:36:58,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:36:58,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:36:58,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:36:58,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:36:58,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:36:58,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:36:58,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:36:58,739 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:36:58,739 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:36:58,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:36:58,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:36:58,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4295d1eb99eb4c4e306792d8730363a971cf6332e7c089b8c1be6cbddd5edcb9 [2021-11-07 16:36:58,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:36:58,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:36:58,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:36:58,957 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:36:58,958 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:36:58,959 INFO L432 ainManager$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 [2021-11-07 16:36:59,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6257853/62794c9cd63f4fae9c0bce4edda590ef/FLAG1f1612c9d [2021-11-07 16:36:59,689 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:36:59,690 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 [2021-11-07 16:36:59,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6257853/62794c9cd63f4fae9c0bce4edda590ef/FLAG1f1612c9d [2021-11-07 16:37:00,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6257853/62794c9cd63f4fae9c0bce4edda590ef [2021-11-07 16:37:00,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:37:00,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:37:00,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:37:00,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:37:00,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:37:00,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:37:00" (1/1) ... [2021-11-07 16:37:00,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188bf33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:00, skipping insertion in model container [2021-11-07 16:37:00,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:37:00" (1/1) ... [2021-11-07 16:37:00,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:37:00,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:37:03,287 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] [2021-11-07 16:37:03,289 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] [2021-11-07 16:37:03,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:37:03,372 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:37:03,662 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] [2021-11-07 16:37:03,662 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] [2021-11-07 16:37:03,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:37:03,896 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:37:03,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03 WrapperNode [2021-11-07 16:37:03,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:37:03,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:37:03,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:37:03,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:37:03,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03" (1/1) ... [2021-11-07 16:37:04,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03" (1/1) ... [2021-11-07 16:37:05,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:37:05,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:37:05,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:37:05,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:37:05,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03" (1/1) ... [2021-11-07 16:37:05,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03" (1/1) ... [2021-11-07 16:37:05,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03" (1/1) ... [2021-11-07 16:37:05,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03" (1/1) ... [2021-11-07 16:37:06,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03" (1/1) ... [2021-11-07 16:37:06,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03" (1/1) ... [2021-11-07 16:37:06,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03" (1/1) ... [2021-11-07 16:37:07,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:37:07,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:37:07,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:37:07,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:37:07,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03" (1/1) ... [2021-11-07 16:37:07,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:37:07,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:37:07,076 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) [2021-11-07 16:37:07,143 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 [2021-11-07 16:37:07,183 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw_vf [2021-11-07 16:37:07,185 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw_vf [2021-11-07 16:37:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:37:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:37:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:37:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:37:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:37:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:37:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_posted_mbx [2021-11-07 16:37:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_posted_mbx [2021-11-07 16:37:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_hw_vf [2021-11-07 16:37:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_hw_vf [2021-11-07 16:37:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:37:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:37:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_ack [2021-11-07 16:37:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_ack [2021-11-07 16:37:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:37:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:37:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set_vf [2021-11-07 16:37:07,187 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set_vf [2021-11-07 16:37:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link_vf [2021-11-07 16:37:07,187 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link_vf [2021-11-07 16:37:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:37:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:37:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-07 16:37:07,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-07 16:37:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:37:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-07 16:37:07,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-07 16:37:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_msg [2021-11-07 16:37:07,188 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_msg [2021-11-07 16:37:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:37:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_posted_mbx [2021-11-07 16:37:07,188 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_posted_mbx [2021-11-07 16:37:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:37:07,188 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 16:37:31,730 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 16:37:31,730 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 16:37:31,731 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 16:37:31,731 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 16:37:31,732 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 16:37:31,732 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 16:37:31,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:37:31,777 INFO L299 CfgBuilder]: Removed 9881 assume(true) statements. [2021-11-07 16:37:31,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:37:31 BoogieIcfgContainer [2021-11-07 16:37:31,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:37:31,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:37:31,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:37:31,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:37:31,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:37:00" (1/3) ... [2021-11-07 16:37:31,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9adcbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:37:31, skipping insertion in model container [2021-11-07 16:37:31,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:37:03" (2/3) ... [2021-11-07 16:37:31,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9adcbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:37:31, skipping insertion in model container [2021-11-07 16:37:31,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:37:31" (3/3) ... [2021-11-07 16:37:31,797 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-07 16:37:31,800 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:37:31,800 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-11-07 16:37:31,873 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:37:31,877 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 [2021-11-07 16:37:31,878 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-11-07 16:37:31,968 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) [2021-11-07 16:37:31,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 16:37:31,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:37:31,982 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] [2021-11-07 16:37:31,983 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)] === [2021-11-07 16:37:31,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:37:31,989 INFO L85 PathProgramCache]: Analyzing trace with hash -670838690, now seen corresponding path program 1 times [2021-11-07 16:37:31,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:37:31,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064981707] [2021-11-07 16:37:31,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:37:31,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:37:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:37:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:37:32,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:37:32,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064981707] [2021-11-07 16:37:32,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064981707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:37:32,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:37:32,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:37:32,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88812553] [2021-11-07 16:37:32,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:37:32,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:37:32,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:37:32,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:37:32,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:32,591 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) [2021-11-07 16:37:34,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:37:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:37:35,564 INFO L93 Difference]: Finished difference Result 23057 states and 31634 transitions. [2021-11-07 16:37:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:37:35,566 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 [2021-11-07 16:37:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:37:35,619 INFO L225 Difference]: With dead ends: 23057 [2021-11-07 16:37:35,620 INFO L226 Difference]: Without dead ends: 12845 [2021-11-07 16:37:35,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:35,654 INFO L933 BasicCegarLoop]: 13574 mSDtfsCounter, 4404 mSDsluCounter, 13452 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2143.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4404 SdHoareTripleChecker+Valid, 27026 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.54ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2343.49ms IncrementalHoareTripleChecker+Time [2021-11-07 16:37:35,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4404 Valid, 27026 Invalid, 106 Unknown, 0 Unchecked, 40.54ms Time], IncrementalHoareTripleChecker [21 Valid, 84 Invalid, 1 Unknown, 0 Unchecked, 2343.49ms Time] [2021-11-07 16:37:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12845 states. [2021-11-07 16:37:35,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12845 to 12813. [2021-11-07 16:37:35,997 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) [2021-11-07 16:37:36,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12813 states to 12813 states and 17163 transitions. [2021-11-07 16:37:36,040 INFO L78 Accepts]: Start accepts. Automaton has 12813 states and 17163 transitions. Word has length 103 [2021-11-07 16:37:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:37:36,041 INFO L470 AbstractCegarLoop]: Abstraction has 12813 states and 17163 transitions. [2021-11-07 16:37:36,042 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) [2021-11-07 16:37:36,043 INFO L276 IsEmpty]: Start isEmpty. Operand 12813 states and 17163 transitions. [2021-11-07 16:37:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 16:37:36,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:37:36,047 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] [2021-11-07 16:37:36,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:37:36,048 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)] === [2021-11-07 16:37:36,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:37:36,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1026933273, now seen corresponding path program 1 times [2021-11-07 16:37:36,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:37:36,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729012955] [2021-11-07 16:37:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:37:36,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:37:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:37:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:37:36,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:37:36,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729012955] [2021-11-07 16:37:36,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729012955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:37:36,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:37:36,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:37:36,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333180587] [2021-11-07 16:37:36,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:37:36,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:37:36,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:37:36,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:37:36,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:36,549 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) [2021-11-07 16:37:38,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:37:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:37:39,172 INFO L93 Difference]: Finished difference Result 32510 states and 43541 transitions. [2021-11-07 16:37:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:37:39,173 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 [2021-11-07 16:37:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:37:39,258 INFO L225 Difference]: With dead ends: 32510 [2021-11-07 16:37:39,258 INFO L226 Difference]: Without dead ends: 19893 [2021-11-07 16:37:39,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:39,290 INFO L933 BasicCegarLoop]: 13024 mSDtfsCounter, 9107 mSDsluCounter, 12786 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2134.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9107 SdHoareTripleChecker+Valid, 25810 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.35ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2311.87ms IncrementalHoareTripleChecker+Time [2021-11-07 16:37:39,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9107 Valid, 25810 Invalid, 140 Unknown, 0 Unchecked, 33.35ms Time], IncrementalHoareTripleChecker [9 Valid, 130 Invalid, 1 Unknown, 0 Unchecked, 2311.87ms Time] [2021-11-07 16:37:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19893 states. [2021-11-07 16:37:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19893 to 19265. [2021-11-07 16:37:39,616 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) [2021-11-07 16:37:39,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19265 states to 19265 states and 25826 transitions. [2021-11-07 16:37:39,651 INFO L78 Accepts]: Start accepts. Automaton has 19265 states and 25826 transitions. Word has length 118 [2021-11-07 16:37:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:37:39,652 INFO L470 AbstractCegarLoop]: Abstraction has 19265 states and 25826 transitions. [2021-11-07 16:37:39,652 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) [2021-11-07 16:37:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 19265 states and 25826 transitions. [2021-11-07 16:37:39,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-07 16:37:39,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:37:39,659 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] [2021-11-07 16:37:39,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:37:39,659 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)] === [2021-11-07 16:37:39,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:37:39,660 INFO L85 PathProgramCache]: Analyzing trace with hash -388310239, now seen corresponding path program 1 times [2021-11-07 16:37:39,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:37:39,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630729281] [2021-11-07 16:37:39,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:37:39,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:37:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:37:39,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:37:39,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:37:39,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630729281] [2021-11-07 16:37:39,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630729281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:37:39,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:37:39,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:37:39,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250825536] [2021-11-07 16:37:39,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:37:39,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:37:39,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:37:39,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:37:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:39,905 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) [2021-11-07 16:37:41,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:37:42,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:37:42,661 INFO L93 Difference]: Finished difference Result 41738 states and 56037 transitions. [2021-11-07 16:37:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:37:42,662 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 [2021-11-07 16:37:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:37:42,719 INFO L225 Difference]: With dead ends: 41738 [2021-11-07 16:37:42,719 INFO L226 Difference]: Without dead ends: 22669 [2021-11-07 16:37:42,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:42,769 INFO L933 BasicCegarLoop]: 17162 mSDtfsCounter, 4223 mSDsluCounter, 12869 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2111.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4223 SdHoareTripleChecker+Valid, 30031 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.85ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2310.88ms IncrementalHoareTripleChecker+Time [2021-11-07 16:37:42,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4223 Valid, 30031 Invalid, 92 Unknown, 0 Unchecked, 23.85ms Time], IncrementalHoareTripleChecker [15 Valid, 76 Invalid, 1 Unknown, 0 Unchecked, 2310.88ms Time] [2021-11-07 16:37:42,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22669 states. [2021-11-07 16:37:43,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22669 to 22633. [2021-11-07 16:37:43,122 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) [2021-11-07 16:37:43,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22633 states to 22633 states and 30379 transitions. [2021-11-07 16:37:43,176 INFO L78 Accepts]: Start accepts. Automaton has 22633 states and 30379 transitions. Word has length 135 [2021-11-07 16:37:43,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:37:43,177 INFO L470 AbstractCegarLoop]: Abstraction has 22633 states and 30379 transitions. [2021-11-07 16:37:43,178 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) [2021-11-07 16:37:43,178 INFO L276 IsEmpty]: Start isEmpty. Operand 22633 states and 30379 transitions. [2021-11-07 16:37:43,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-07 16:37:43,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:37:43,181 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] [2021-11-07 16:37:43,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:37:43,181 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)] === [2021-11-07 16:37:43,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:37:43,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1221308200, now seen corresponding path program 1 times [2021-11-07 16:37:43,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:37:43,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190195407] [2021-11-07 16:37:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:37:43,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:37:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:37:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:37:43,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:37:43,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190195407] [2021-11-07 16:37:43,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190195407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:37:43,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:37:43,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:37:43,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071148350] [2021-11-07 16:37:43,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:37:43,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:37:43,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:37:43,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:37:43,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:43,463 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) [2021-11-07 16:37:45,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:37:46,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:37:46,170 INFO L93 Difference]: Finished difference Result 48466 states and 65127 transitions. [2021-11-07 16:37:46,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:37:46,171 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 [2021-11-07 16:37:46,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:37:46,227 INFO L225 Difference]: With dead ends: 48466 [2021-11-07 16:37:46,227 INFO L226 Difference]: Without dead ends: 26029 [2021-11-07 16:37:46,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:46,258 INFO L933 BasicCegarLoop]: 17131 mSDtfsCounter, 4217 mSDsluCounter, 12882 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2111.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4217 SdHoareTripleChecker+Valid, 30013 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.63ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2292.45ms IncrementalHoareTripleChecker+Time [2021-11-07 16:37:46,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4217 Valid, 30013 Invalid, 85 Unknown, 0 Unchecked, 15.63ms Time], IncrementalHoareTripleChecker [13 Valid, 71 Invalid, 1 Unknown, 0 Unchecked, 2292.45ms Time] [2021-11-07 16:37:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26029 states. [2021-11-07 16:37:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26029 to 25993. [2021-11-07 16:37:46,632 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) [2021-11-07 16:37:46,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25993 states to 25993 states and 34924 transitions. [2021-11-07 16:37:46,686 INFO L78 Accepts]: Start accepts. Automaton has 25993 states and 34924 transitions. Word has length 174 [2021-11-07 16:37:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:37:46,687 INFO L470 AbstractCegarLoop]: Abstraction has 25993 states and 34924 transitions. [2021-11-07 16:37:46,687 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) [2021-11-07 16:37:46,687 INFO L276 IsEmpty]: Start isEmpty. Operand 25993 states and 34924 transitions. [2021-11-07 16:37:46,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-07 16:37:46,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:37:46,690 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] [2021-11-07 16:37:46,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:37:46,691 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)] === [2021-11-07 16:37:46,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:37:46,692 INFO L85 PathProgramCache]: Analyzing trace with hash 711835110, now seen corresponding path program 1 times [2021-11-07 16:37:46,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:37:46,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055837163] [2021-11-07 16:37:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:37:46,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:37:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:37:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 16:37:47,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:37:47,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055837163] [2021-11-07 16:37:47,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055837163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:37:47,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:37:47,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:37:47,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146874357] [2021-11-07 16:37:47,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:37:47,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:37:47,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:37:47,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:37:47,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:47,012 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) [2021-11-07 16:37:49,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:37:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:37:49,634 INFO L93 Difference]: Finished difference Result 55406 states and 74518 transitions. [2021-11-07 16:37:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:37:49,634 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 [2021-11-07 16:37:49,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:37:49,709 INFO L225 Difference]: With dead ends: 55406 [2021-11-07 16:37:49,710 INFO L226 Difference]: Without dead ends: 29609 [2021-11-07 16:37:49,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:49,881 INFO L933 BasicCegarLoop]: 17162 mSDtfsCounter, 7679 mSDsluCounter, 9423 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2120.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7679 SdHoareTripleChecker+Valid, 26585 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.08ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2292.26ms IncrementalHoareTripleChecker+Time [2021-11-07 16:37:49,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7679 Valid, 26585 Invalid, 91 Unknown, 0 Unchecked, 15.08ms Time], IncrementalHoareTripleChecker [16 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2292.26ms Time] [2021-11-07 16:37:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29609 states. [2021-11-07 16:37:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29609 to 29573. [2021-11-07 16:37:50,278 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) [2021-11-07 16:37:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29573 states to 29573 states and 39764 transitions. [2021-11-07 16:37:50,330 INFO L78 Accepts]: Start accepts. Automaton has 29573 states and 39764 transitions. Word has length 174 [2021-11-07 16:37:50,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:37:50,332 INFO L470 AbstractCegarLoop]: Abstraction has 29573 states and 39764 transitions. [2021-11-07 16:37:50,332 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) [2021-11-07 16:37:50,332 INFO L276 IsEmpty]: Start isEmpty. Operand 29573 states and 39764 transitions. [2021-11-07 16:37:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 16:37:50,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:37:50,336 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] [2021-11-07 16:37:50,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:37:50,337 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)] === [2021-11-07 16:37:50,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:37:50,337 INFO L85 PathProgramCache]: Analyzing trace with hash 206494537, now seen corresponding path program 1 times [2021-11-07 16:37:50,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:37:50,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345915470] [2021-11-07 16:37:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:37:50,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:37:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:37:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 16:37:50,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:37:50,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345915470] [2021-11-07 16:37:50,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345915470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:37:50,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:37:50,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:37:50,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211753143] [2021-11-07 16:37:50,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:37:50,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:37:50,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:37:50,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:37:50,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:50,658 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) [2021-11-07 16:37:52,708 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:37:53,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:37:53,349 INFO L93 Difference]: Finished difference Result 62348 states and 83901 transitions. [2021-11-07 16:37:53,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:37:53,349 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 [2021-11-07 16:37:53,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:37:53,408 INFO L225 Difference]: With dead ends: 62348 [2021-11-07 16:37:53,408 INFO L226 Difference]: Without dead ends: 32971 [2021-11-07 16:37:53,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:53,440 INFO L933 BasicCegarLoop]: 15222 mSDtfsCounter, 4220 mSDsluCounter, 12880 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2100.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 28102 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.32ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2243.94ms IncrementalHoareTripleChecker+Time [2021-11-07 16:37:53,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4220 Valid, 28102 Invalid, 87 Unknown, 0 Unchecked, 14.32ms Time], IncrementalHoareTripleChecker [12 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2243.94ms Time] [2021-11-07 16:37:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32971 states. [2021-11-07 16:37:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32971 to 32935. [2021-11-07 16:37:53,834 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) [2021-11-07 16:37:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32935 states to 32935 states and 44311 transitions. [2021-11-07 16:37:54,018 INFO L78 Accepts]: Start accepts. Automaton has 32935 states and 44311 transitions. Word has length 210 [2021-11-07 16:37:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:37:54,018 INFO L470 AbstractCegarLoop]: Abstraction has 32935 states and 44311 transitions. [2021-11-07 16:37:54,019 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) [2021-11-07 16:37:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 32935 states and 44311 transitions. [2021-11-07 16:37:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 16:37:54,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:37:54,023 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] [2021-11-07 16:37:54,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:37:54,023 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)] === [2021-11-07 16:37:54,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:37:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash -302978553, now seen corresponding path program 1 times [2021-11-07 16:37:54,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:37:54,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349866310] [2021-11-07 16:37:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:37:54,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:37:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:37:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 16:37:54,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:37:54,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349866310] [2021-11-07 16:37:54,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349866310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:37:54,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:37:54,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:37:54,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792850181] [2021-11-07 16:37:54,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:37:54,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:37:54,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:37:54,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:37:54,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:54,203 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) [2021-11-07 16:37:56,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:37:57,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:37:57,031 INFO L93 Difference]: Finished difference Result 69074 states and 92999 transitions. [2021-11-07 16:37:57,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:37:57,031 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 [2021-11-07 16:37:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:37:57,136 INFO L225 Difference]: With dead ends: 69074 [2021-11-07 16:37:57,137 INFO L226 Difference]: Without dead ends: 36335 [2021-11-07 16:37:57,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:57,195 INFO L933 BasicCegarLoop]: 17162 mSDtfsCounter, 4235 mSDsluCounter, 12866 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2109.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 30028 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.77ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2298.22ms IncrementalHoareTripleChecker+Time [2021-11-07 16:37:57,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4235 Valid, 30028 Invalid, 89 Unknown, 0 Unchecked, 14.77ms Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 1 Unknown, 0 Unchecked, 2298.22ms Time] [2021-11-07 16:37:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36335 states. [2021-11-07 16:37:57,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36335 to 36299. [2021-11-07 16:37:57,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36299 states, 35665 states have (on average 1.342044020748633) internal successors, (47864), 35712 states have internal predecessors, (47864), 498 states have call successors, (498), 90 states have call predecessors, (498), 90 states have return successors, (498), 496 states have call predecessors, (498), 498 states have call successors, (498) [2021-11-07 16:37:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36299 states to 36299 states and 48860 transitions. [2021-11-07 16:37:57,928 INFO L78 Accepts]: Start accepts. Automaton has 36299 states and 48860 transitions. Word has length 210 [2021-11-07 16:37:57,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:37:57,928 INFO L470 AbstractCegarLoop]: Abstraction has 36299 states and 48860 transitions. [2021-11-07 16:37:57,929 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) [2021-11-07 16:37:57,929 INFO L276 IsEmpty]: Start isEmpty. Operand 36299 states and 48860 transitions. [2021-11-07 16:37:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-07 16:37:57,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:37:57,934 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] [2021-11-07 16:37:57,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:37:57,934 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)] === [2021-11-07 16:37:57,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:37:57,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1908348413, now seen corresponding path program 1 times [2021-11-07 16:37:57,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:37:57,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172982932] [2021-11-07 16:37:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:37:57,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:37:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:37:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 16:37:58,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:37:58,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172982932] [2021-11-07 16:37:58,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172982932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:37:58,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:37:58,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:37:58,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767157711] [2021-11-07 16:37:58,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:37:58,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:37:58,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:37:58,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:37:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:58,214 INFO L87 Difference]: Start difference. First operand 36299 states and 48860 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) [2021-11-07 16:37:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:37:58,884 INFO L93 Difference]: Finished difference Result 72402 states and 97500 transitions. [2021-11-07 16:37:58,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:37:58,885 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 [2021-11-07 16:37:58,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:37:58,989 INFO L225 Difference]: With dead ends: 72402 [2021-11-07 16:37:58,989 INFO L226 Difference]: Without dead ends: 36299 [2021-11-07 16:37:59,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:37:59,066 INFO L933 BasicCegarLoop]: 12854 mSDtfsCounter, 12696 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12696 SdHoareTripleChecker+Valid, 12854 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.27ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 213.05ms IncrementalHoareTripleChecker+Time [2021-11-07 16:37:59,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12696 Valid, 12854 Invalid, 91 Unknown, 0 Unchecked, 12.27ms Time], IncrementalHoareTripleChecker [45 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 213.05ms Time] [2021-11-07 16:37:59,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36299 states. [2021-11-07 16:37:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36299 to 36299. [2021-11-07 16:37:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36299 states, 35665 states have (on average 1.3375017524183372) internal successors, (47702), 35712 states have internal predecessors, (47702), 498 states have call successors, (498), 90 states have call predecessors, (498), 90 states have return successors, (498), 496 states have call predecessors, (498), 498 states have call successors, (498) [2021-11-07 16:37:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36299 states to 36299 states and 48698 transitions. [2021-11-07 16:37:59,893 INFO L78 Accepts]: Start accepts. Automaton has 36299 states and 48698 transitions. Word has length 232 [2021-11-07 16:37:59,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:37:59,894 INFO L470 AbstractCegarLoop]: Abstraction has 36299 states and 48698 transitions. [2021-11-07 16:37:59,894 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) [2021-11-07 16:37:59,894 INFO L276 IsEmpty]: Start isEmpty. Operand 36299 states and 48698 transitions. [2021-11-07 16:37:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-07 16:37:59,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:37:59,916 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] [2021-11-07 16:37:59,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 16:37:59,916 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)] === [2021-11-07 16:37:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:37:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash 970706135, now seen corresponding path program 1 times [2021-11-07 16:37:59,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:37:59,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340831231] [2021-11-07 16:37:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:37:59,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:38:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:38:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 16:38:00,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:38:00,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340831231] [2021-11-07 16:38:00,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340831231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:38:00,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:38:00,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:38:00,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521256323] [2021-11-07 16:38:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:38:00,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:38:00,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:38:00,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:38:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:38:00,249 INFO L87 Difference]: Start difference. First operand 36299 states and 48698 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) [2021-11-07 16:38:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:38:01,573 INFO L93 Difference]: Finished difference Result 72402 states and 97176 transitions. [2021-11-07 16:38:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:38:01,573 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 [2021-11-07 16:38:01,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:38:01,642 INFO L225 Difference]: With dead ends: 72402 [2021-11-07 16:38:01,642 INFO L226 Difference]: Without dead ends: 36299 [2021-11-07 16:38:01,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:38:01,695 INFO L933 BasicCegarLoop]: 12762 mSDtfsCounter, 25042 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 408.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25042 SdHoareTripleChecker+Valid, 12762 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.54ms SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 481.50ms IncrementalHoareTripleChecker+Time [2021-11-07 16:38:01,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25042 Valid, 12762 Invalid, 598 Unknown, 0 Unchecked, 28.54ms Time], IncrementalHoareTripleChecker [506 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 481.50ms Time] [2021-11-07 16:38:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36299 states. [2021-11-07 16:38:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36299 to 36299. [2021-11-07 16:38:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36299 states, 35665 states have (on average 1.3329594840880414) internal successors, (47540), 35712 states have internal predecessors, (47540), 498 states have call successors, (498), 90 states have call predecessors, (498), 90 states have return successors, (498), 496 states have call predecessors, (498), 498 states have call successors, (498) [2021-11-07 16:38:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36299 states to 36299 states and 48536 transitions. [2021-11-07 16:38:02,556 INFO L78 Accepts]: Start accepts. Automaton has 36299 states and 48536 transitions. Word has length 233 [2021-11-07 16:38:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:38:02,557 INFO L470 AbstractCegarLoop]: Abstraction has 36299 states and 48536 transitions. [2021-11-07 16:38:02,557 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) [2021-11-07 16:38:02,557 INFO L276 IsEmpty]: Start isEmpty. Operand 36299 states and 48536 transitions. [2021-11-07 16:38:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-07 16:38:02,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:38:02,563 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] [2021-11-07 16:38:02,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 16:38:02,563 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)] === [2021-11-07 16:38:02,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:38:02,564 INFO L85 PathProgramCache]: Analyzing trace with hash 27232862, now seen corresponding path program 1 times [2021-11-07 16:38:02,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:38:02,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437358858] [2021-11-07 16:38:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:38:02,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:38:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:38:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 16:38:02,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:38:02,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437358858] [2021-11-07 16:38:02,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437358858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:38:02,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:38:02,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:38:02,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153837686] [2021-11-07 16:38:02,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:38:02,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:38:02,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:38:02,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:38:02,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:38:02,884 INFO L87 Difference]: Start difference. First operand 36299 states and 48536 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) [2021-11-07 16:38:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:38:04,254 INFO L93 Difference]: Finished difference Result 72402 states and 96852 transitions. [2021-11-07 16:38:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:38:04,255 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 234 [2021-11-07 16:38:04,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:38:04,321 INFO L225 Difference]: With dead ends: 72402 [2021-11-07 16:38:04,322 INFO L226 Difference]: Without dead ends: 36299 [2021-11-07 16:38:04,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.40ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:38:04,373 INFO L933 BasicCegarLoop]: 12716 mSDtfsCounter, 24949 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 408.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24949 SdHoareTripleChecker+Valid, 12716 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.07ms SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 481.51ms IncrementalHoareTripleChecker+Time [2021-11-07 16:38:04,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24949 Valid, 12716 Invalid, 598 Unknown, 0 Unchecked, 23.07ms Time], IncrementalHoareTripleChecker [506 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 481.51ms Time] [2021-11-07 16:38:04,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36299 states. [2021-11-07 16:38:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36299 to 36299. [2021-11-07 16:38:05,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36299 states, 35665 states have (on average 1.3284172157577456) internal successors, (47378), 35712 states have internal predecessors, (47378), 498 states have call successors, (498), 90 states have call predecessors, (498), 90 states have return successors, (498), 496 states have call predecessors, (498), 498 states have call successors, (498) [2021-11-07 16:38:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36299 states to 36299 states and 48374 transitions. [2021-11-07 16:38:05,323 INFO L78 Accepts]: Start accepts. Automaton has 36299 states and 48374 transitions. Word has length 234 [2021-11-07 16:38:05,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:38:05,323 INFO L470 AbstractCegarLoop]: Abstraction has 36299 states and 48374 transitions. [2021-11-07 16:38:05,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-11-07 16:38:05,324 INFO L276 IsEmpty]: Start isEmpty. Operand 36299 states and 48374 transitions. [2021-11-07 16:38:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-07 16:38:05,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:38:05,328 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, 1] [2021-11-07 16:38:05,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 16:38:05,329 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-07 16:38:05,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:38:05,329 INFO L85 PathProgramCache]: Analyzing trace with hash 844481426, now seen corresponding path program 1 times [2021-11-07 16:38:05,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:38:05,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847676402] [2021-11-07 16:38:05,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:38:05,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:38:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:38:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 16:38:05,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:38:05,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847676402] [2021-11-07 16:38:05,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847676402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:38:05,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:38:05,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:38:05,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652005383] [2021-11-07 16:38:05,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:38:05,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:38:05,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:38:05,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:38:05,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:38:05,661 INFO L87 Difference]: Start difference. First operand 36299 states and 48374 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 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) [2021-11-07 16:38:07,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:38:07,153 INFO L93 Difference]: Finished difference Result 72402 states and 96528 transitions. [2021-11-07 16:38:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:38:07,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 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 235 [2021-11-07 16:38:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:38:07,220 INFO L225 Difference]: With dead ends: 72402 [2021-11-07 16:38:07,220 INFO L226 Difference]: Without dead ends: 36299 [2021-11-07 16:38:07,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:38:07,269 INFO L933 BasicCegarLoop]: 12670 mSDtfsCounter, 24856 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 408.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24856 SdHoareTripleChecker+Valid, 12670 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.84ms SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 485.55ms IncrementalHoareTripleChecker+Time [2021-11-07 16:38:07,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24856 Valid, 12670 Invalid, 598 Unknown, 0 Unchecked, 22.84ms Time], IncrementalHoareTripleChecker [506 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 485.55ms Time] [2021-11-07 16:38:07,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36299 states. [2021-11-07 16:38:08,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36299 to 36299. [2021-11-07 16:38:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36299 states, 35665 states have (on average 1.3238749474274498) internal successors, (47216), 35712 states have internal predecessors, (47216), 498 states have call successors, (498), 90 states have call predecessors, (498), 90 states have return successors, (498), 496 states have call predecessors, (498), 498 states have call successors, (498) [2021-11-07 16:38:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36299 states to 36299 states and 48212 transitions. [2021-11-07 16:38:08,154 INFO L78 Accepts]: Start accepts. Automaton has 36299 states and 48212 transitions. Word has length 235 [2021-11-07 16:38:08,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:38:08,154 INFO L470 AbstractCegarLoop]: Abstraction has 36299 states and 48212 transitions. [2021-11-07 16:38:08,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 3 states have internal predecessors, (211), 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) [2021-11-07 16:38:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 36299 states and 48212 transitions. [2021-11-07 16:38:08,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-07 16:38:08,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:38:08,159 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, 1, 1] [2021-11-07 16:38:08,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 16:38:08,159 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-07 16:38:08,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:38:08,160 INFO L85 PathProgramCache]: Analyzing trace with hash 409532089, now seen corresponding path program 1 times [2021-11-07 16:38:08,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:38:08,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157597613] [2021-11-07 16:38:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:38:08,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:38:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:38:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 16:38:08,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:38:08,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157597613] [2021-11-07 16:38:08,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157597613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:38:08,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:38:08,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:38:08,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108139885] [2021-11-07 16:38:08,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:38:08,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:38:08,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:38:08,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:38:08,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:38:08,622 INFO L87 Difference]: Start difference. First operand 36299 states and 48212 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 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) [2021-11-07 16:38:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:38:10,246 INFO L93 Difference]: Finished difference Result 72402 states and 96204 transitions. [2021-11-07 16:38:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:38:10,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 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 236 [2021-11-07 16:38:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:38:10,306 INFO L225 Difference]: With dead ends: 72402 [2021-11-07 16:38:10,307 INFO L226 Difference]: Without dead ends: 36299 [2021-11-07 16:38:10,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.20ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:38:10,344 INFO L933 BasicCegarLoop]: 12624 mSDtfsCounter, 24763 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 408.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24763 SdHoareTripleChecker+Valid, 12624 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.78ms SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 481.09ms IncrementalHoareTripleChecker+Time [2021-11-07 16:38:10,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24763 Valid, 12624 Invalid, 598 Unknown, 0 Unchecked, 23.78ms Time], IncrementalHoareTripleChecker [506 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 481.09ms Time] [2021-11-07 16:38:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36299 states. [2021-11-07 16:38:11,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36299 to 36299. [2021-11-07 16:38:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36299 states, 35665 states have (on average 1.319332679097154) internal successors, (47054), 35712 states have internal predecessors, (47054), 498 states have call successors, (498), 90 states have call predecessors, (498), 90 states have return successors, (498), 496 states have call predecessors, (498), 498 states have call successors, (498) [2021-11-07 16:38:11,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36299 states to 36299 states and 48050 transitions. [2021-11-07 16:38:11,305 INFO L78 Accepts]: Start accepts. Automaton has 36299 states and 48050 transitions. Word has length 236 [2021-11-07 16:38:11,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:38:11,306 INFO L470 AbstractCegarLoop]: Abstraction has 36299 states and 48050 transitions. [2021-11-07 16:38:11,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 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) [2021-11-07 16:38:11,306 INFO L276 IsEmpty]: Start isEmpty. Operand 36299 states and 48050 transitions. [2021-11-07 16:38:11,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-07 16:38:11,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:38:11,311 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, 1, 1, 1] [2021-11-07 16:38:11,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 16:38:11,311 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 43 more)] === [2021-11-07 16:38:11,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:38:11,312 INFO L85 PathProgramCache]: Analyzing trace with hash -188846515, now seen corresponding path program 1 times [2021-11-07 16:38:11,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:38:11,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385390132] [2021-11-07 16:38:11,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:38:11,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:38:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:38:11,587 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 16:38:11,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:38:11,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385390132] [2021-11-07 16:38:11,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385390132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:38:11,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:38:11,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:38:11,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686484584] [2021-11-07 16:38:11,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:38:11,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:38:11,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:38:11,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:38:11,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:38:11,589 INFO L87 Difference]: Start difference. First operand 36299 states and 48050 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 3 states have internal predecessors, (213), 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)