./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.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 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 09:46:33,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 09:46:33,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 09:46:33,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 09:46:33,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 09:46:33,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 09:46:33,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 09:46:33,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 09:46:33,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 09:46:33,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 09:46:33,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 09:46:33,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 09:46:33,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 09:46:33,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 09:46:33,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 09:46:33,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 09:46:33,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 09:46:33,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 09:46:33,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 09:46:33,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 09:46:33,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 09:46:33,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 09:46:33,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 09:46:33,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 09:46:33,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 09:46:33,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 09:46:33,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 09:46:33,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 09:46:33,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 09:46:33,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 09:46:33,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 09:46:33,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 09:46:33,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 09:46:33,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 09:46:33,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 09:46:33,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 09:46:33,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 09:46:33,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 09:46:33,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 09:46:33,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 09:46:33,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 09:46:33,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 09:46:33,748 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 09:46:33,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 09:46:33,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 09:46:33,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 09:46:33,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 09:46:33,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 09:46:33,751 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 09:46:33,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 09:46:33,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 09:46:33,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 09:46:33,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 09:46:33,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 09:46:33,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 09:46:33,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 09:46:33,753 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 09:46:33,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 09:46:33,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 09:46:33,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 09:46:33,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 09:46:33,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 09:46:33,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 09:46:33,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 09:46:33,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 09:46:33,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 09:46:33,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 09:46:33,755 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 09:46:33,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 09:46:33,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 09:46:33,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 09:46:33,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fae230e52bc983f4c0251cc946bfbc52943e9b9d698b0f694e42af65a9c74e9 [2021-11-04 09:46:33,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 09:46:34,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 09:46:34,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 09:46:34,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 09:46:34,020 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 09:46:34,021 INFO L432 ainManager$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-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-04 09:46:34,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf255f7c2/e1a037c3bc0b4aa7b05f7a3c52f731f7/FLAG1ad3b1545 [2021-11-04 09:46:34,859 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 09:46:34,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-04 09:46:34,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf255f7c2/e1a037c3bc0b4aa7b05f7a3c52f731f7/FLAG1ad3b1545 [2021-11-04 09:46:35,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf255f7c2/e1a037c3bc0b4aa7b05f7a3c52f731f7 [2021-11-04 09:46:35,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 09:46:35,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 09:46:35,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 09:46:35,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 09:46:35,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 09:46:35,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:46:35" (1/1) ... [2021-11-04 09:46:35,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d899451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:35, skipping insertion in model container [2021-11-04 09:46:35,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 09:46:35" (1/1) ... [2021-11-04 09:46:35,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 09:46:35,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 09:46:36,914 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-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-04 09:46:36,917 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-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-04 09:46:36,917 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-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-04 09:46:36,918 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-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-04 09:46:36,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 09:46:36,989 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 09:46:37,265 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-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292221,292234] [2021-11-04 09:46:37,266 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-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292387,292400] [2021-11-04 09:46:37,266 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-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292551,292564] [2021-11-04 09:46:37,267 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-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i[292716,292729] [2021-11-04 09:46:37,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 09:46:37,430 INFO L208 MainTranslator]: Completed translation [2021-11-04 09:46:37,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37 WrapperNode [2021-11-04 09:46:37,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 09:46:37,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 09:46:37,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 09:46:37,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 09:46:37,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37" (1/1) ... [2021-11-04 09:46:37,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37" (1/1) ... [2021-11-04 09:46:38,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 09:46:38,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 09:46:38,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 09:46:38,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 09:46:38,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37" (1/1) ... [2021-11-04 09:46:38,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37" (1/1) ... [2021-11-04 09:46:38,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37" (1/1) ... [2021-11-04 09:46:38,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37" (1/1) ... [2021-11-04 09:46:38,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37" (1/1) ... [2021-11-04 09:46:38,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37" (1/1) ... [2021-11-04 09:46:38,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37" (1/1) ... [2021-11-04 09:46:38,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 09:46:38,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 09:46:38,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 09:46:38,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 09:46:38,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37" (1/1) ... [2021-11-04 09:46:38,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 09:46:38,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 09:46:38,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 09:46:38,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 09:46:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 09:46:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 09:46:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 09:46:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 09:46:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 09:46:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 09:46:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 09:46:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 09:46:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 09:46:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 09:46:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 09:46:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 09:46:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-04 09:46:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 09:46:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 09:46:39,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 09:46:42,609 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-04 09:46:42,610 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-04 09:46:42,610 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 09:46:42,611 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 09:46:42,611 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 09:46:42,611 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 09:46:42,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 09:46:42,640 INFO L299 CfgBuilder]: Removed 4958 assume(true) statements. [2021-11-04 09:46:42,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:46:42 BoogieIcfgContainer [2021-11-04 09:46:42,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 09:46:42,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 09:46:42,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 09:46:42,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 09:46:42,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 09:46:35" (1/3) ... [2021-11-04 09:46:42,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e9917d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:46:42, skipping insertion in model container [2021-11-04 09:46:42,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 09:46:37" (2/3) ... [2021-11-04 09:46:42,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e9917d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 09:46:42, skipping insertion in model container [2021-11-04 09:46:42,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 09:46:42" (3/3) ... [2021-11-04 09:46:42,654 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-ethernet-icplus-ipg.cil.i [2021-11-04 09:46:42,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 09:46:42,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2021-11-04 09:46:42,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 09:46:42,724 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 09:46:42,726 INFO L340 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2021-11-04 09:46:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 4079 states, 4055 states have (on average 1.3023427866831072) internal successors, (5281), 4078 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:46:42,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-04 09:46:42,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:46:42,805 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] [2021-11-04 09:46:42,805 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:46:42,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:46:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1375132322, now seen corresponding path program 1 times [2021-11-04 09:46:42,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:46:42,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555335227] [2021-11-04 09:46:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:46:42,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:46:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:46:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:46:43,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:46:43,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555335227] [2021-11-04 09:46:43,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555335227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:46:43,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:46:43,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:46:43,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066491239] [2021-11-04 09:46:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:46:43,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:46:43,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:46:43,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:46:43,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:46:43,317 INFO L87 Difference]: Start difference. First operand has 4079 states, 4055 states have (on average 1.3023427866831072) internal successors, (5281), 4078 states have internal predecessors, (5281), 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) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:46:55,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:46:55,937 INFO L93 Difference]: Finished difference Result 11185 states and 14484 transitions. [2021-11-04 09:46:55,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:46:55,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-11-04 09:46:55,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:46:55,983 INFO L225 Difference]: With dead ends: 11185 [2021-11-04 09:46:55,983 INFO L226 Difference]: Without dead ends: 6960 [2021-11-04 09:46:55,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:46:56,000 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 4022 mSDsluCounter, 5031 mSDsCounter, 0 mSdLazyCounter, 9917 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10323.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4022 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 9926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.12ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12110.77ms IncrementalHoareTripleChecker+Time [2021-11-04 09:46:56,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4022 Valid, 258 Invalid, 9926 Unknown, 0 Unchecked, 27.12ms Time], IncrementalHoareTripleChecker [9 Valid, 9917 Invalid, 0 Unknown, 0 Unchecked, 12110.77ms Time] [2021-11-04 09:46:56,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6960 states. [2021-11-04 09:46:56,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6960 to 6615. [2021-11-04 09:46:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6615 states, 6591 states have (on average 1.252465483234714) internal successors, (8255), 6614 states have internal predecessors, (8255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:46:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6615 states to 6615 states and 8255 transitions. [2021-11-04 09:46:56,344 INFO L78 Accepts]: Start accepts. Automaton has 6615 states and 8255 transitions. Word has length 41 [2021-11-04 09:46:56,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:46:56,345 INFO L470 AbstractCegarLoop]: Abstraction has 6615 states and 8255 transitions. [2021-11-04 09:46:56,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:46:56,347 INFO L276 IsEmpty]: Start isEmpty. Operand 6615 states and 8255 transitions. [2021-11-04 09:46:56,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-04 09:46:56,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:46:56,353 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] [2021-11-04 09:46:56,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 09:46:56,354 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:46:56,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:46:56,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1114883933, now seen corresponding path program 1 times [2021-11-04 09:46:56,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:46:56,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835989963] [2021-11-04 09:46:56,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:46:56,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:46:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:46:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:46:56,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:46:56,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835989963] [2021-11-04 09:46:56,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835989963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:46:56,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:46:56,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:46:56,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823169622] [2021-11-04 09:46:56,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:46:56,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:46:56,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:46:56,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:46:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:46:56,530 INFO L87 Difference]: Start difference. First operand 6615 states and 8255 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:47:08,252 INFO L93 Difference]: Finished difference Result 19575 states and 24476 transitions. [2021-11-04 09:47:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:47:08,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-04 09:47:08,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:47:08,302 INFO L225 Difference]: With dead ends: 19575 [2021-11-04 09:47:08,303 INFO L226 Difference]: Without dead ends: 13028 [2021-11-04 09:47:08,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:47:08,322 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4675 mSDsluCounter, 4792 mSDsCounter, 0 mSdLazyCounter, 9649 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9780.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.90ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 9649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11395.74ms IncrementalHoareTripleChecker+Time [2021-11-04 09:47:08,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4675 Valid, 0 Invalid, 9656 Unknown, 0 Unchecked, 12.90ms Time], IncrementalHoareTripleChecker [7 Valid, 9649 Invalid, 0 Unknown, 0 Unchecked, 11395.74ms Time] [2021-11-04 09:47:08,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13028 states. [2021-11-04 09:47:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13028 to 13004. [2021-11-04 09:47:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13004 states, 12980 states have (on average 1.2535439137134052) internal successors, (16271), 13003 states have internal predecessors, (16271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13004 states to 13004 states and 16271 transitions. [2021-11-04 09:47:08,628 INFO L78 Accepts]: Start accepts. Automaton has 13004 states and 16271 transitions. Word has length 42 [2021-11-04 09:47:08,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:47:08,634 INFO L470 AbstractCegarLoop]: Abstraction has 13004 states and 16271 transitions. [2021-11-04 09:47:08,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:08,635 INFO L276 IsEmpty]: Start isEmpty. Operand 13004 states and 16271 transitions. [2021-11-04 09:47:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-04 09:47:08,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:47:08,638 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] [2021-11-04 09:47:08,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 09:47:08,639 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:47:08,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:47:08,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1793047480, now seen corresponding path program 1 times [2021-11-04 09:47:08,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:47:08,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225428758] [2021-11-04 09:47:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:47:08,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:47:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:47:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:47:08,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:47:08,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225428758] [2021-11-04 09:47:08,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225428758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:47:08,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:47:08,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:47:08,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607229377] [2021-11-04 09:47:08,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:47:08,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:47:08,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:47:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:47:08,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:47:08,801 INFO L87 Difference]: Start difference. First operand 13004 states and 16271 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:14,674 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:47:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:47:19,979 INFO L93 Difference]: Finished difference Result 22789 states and 28625 transitions. [2021-11-04 09:47:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:47:19,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-04 09:47:19,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:47:20,012 INFO L225 Difference]: With dead ends: 22789 [2021-11-04 09:47:20,013 INFO L226 Difference]: Without dead ends: 9853 [2021-11-04 09:47:20,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:47:20,035 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2046 mSDsluCounter, 4745 mSDsCounter, 0 mSdLazyCounter, 10569 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9596.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.50ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 10569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10915.06ms IncrementalHoareTripleChecker+Time [2021-11-04 09:47:20,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2046 Valid, 0 Invalid, 10590 Unknown, 0 Unchecked, 11.50ms Time], IncrementalHoareTripleChecker [21 Valid, 10569 Invalid, 0 Unknown, 0 Unchecked, 10915.06ms Time] [2021-11-04 09:47:20,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9853 states. [2021-11-04 09:47:20,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9853 to 9799. [2021-11-04 09:47:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9799 states, 9775 states have (on average 1.2620971867007673) internal successors, (12337), 9798 states have internal predecessors, (12337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9799 states to 9799 states and 12337 transitions. [2021-11-04 09:47:20,260 INFO L78 Accepts]: Start accepts. Automaton has 9799 states and 12337 transitions. Word has length 48 [2021-11-04 09:47:20,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:47:20,260 INFO L470 AbstractCegarLoop]: Abstraction has 9799 states and 12337 transitions. [2021-11-04 09:47:20,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:20,261 INFO L276 IsEmpty]: Start isEmpty. Operand 9799 states and 12337 transitions. [2021-11-04 09:47:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-04 09:47:20,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:47:20,263 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 09:47:20,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 09:47:20,264 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:47:20,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:47:20,265 INFO L85 PathProgramCache]: Analyzing trace with hash -83071518, now seen corresponding path program 1 times [2021-11-04 09:47:20,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:47:20,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766512443] [2021-11-04 09:47:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:47:20,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:47:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:47:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:47:20,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:47:20,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766512443] [2021-11-04 09:47:20,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766512443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:47:20,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:47:20,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:47:20,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594514248] [2021-11-04 09:47:20,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:47:20,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:47:20,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:47:20,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:47:20,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:47:20,422 INFO L87 Difference]: Start difference. First operand 9799 states and 12337 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:30,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:47:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:47:33,326 INFO L93 Difference]: Finished difference Result 27459 states and 34586 transitions. [2021-11-04 09:47:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:47:33,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-04 09:47:33,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:47:33,370 INFO L225 Difference]: With dead ends: 27459 [2021-11-04 09:47:33,370 INFO L226 Difference]: Without dead ends: 18527 [2021-11-04 09:47:33,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:47:33,395 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4654 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 10691 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10917.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.36ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12535.79ms IncrementalHoareTripleChecker+Time [2021-11-04 09:47:33,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4654 Valid, 0 Invalid, 10696 Unknown, 0 Unchecked, 13.36ms Time], IncrementalHoareTripleChecker [5 Valid, 10691 Invalid, 0 Unknown, 0 Unchecked, 12535.79ms Time] [2021-11-04 09:47:33,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18527 states. [2021-11-04 09:47:33,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18527 to 18503. [2021-11-04 09:47:33,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18503 states, 18479 states have (on average 1.2619189350073057) internal successors, (23319), 18502 states have internal predecessors, (23319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18503 states to 18503 states and 23319 transitions. [2021-11-04 09:47:33,806 INFO L78 Accepts]: Start accepts. Automaton has 18503 states and 23319 transitions. Word has length 71 [2021-11-04 09:47:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:47:33,807 INFO L470 AbstractCegarLoop]: Abstraction has 18503 states and 23319 transitions. [2021-11-04 09:47:33,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 18503 states and 23319 transitions. [2021-11-04 09:47:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-04 09:47:33,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:47:33,811 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 09:47:33,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 09:47:33,811 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:47:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:47:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1362935196, now seen corresponding path program 1 times [2021-11-04 09:47:33,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:47:33,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810498405] [2021-11-04 09:47:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:47:33,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:47:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:47:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:47:33,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:47:33,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810498405] [2021-11-04 09:47:33,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810498405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:47:33,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:47:33,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:47:33,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802122315] [2021-11-04 09:47:33,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:47:33,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:47:33,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:47:33,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:47:33,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:47:33,956 INFO L87 Difference]: Start difference. First operand 18503 states and 23319 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:47,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:47:47,395 INFO L93 Difference]: Finished difference Result 44871 states and 56558 transitions. [2021-11-04 09:47:47,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:47:47,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-04 09:47:47,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:47:47,460 INFO L225 Difference]: With dead ends: 44871 [2021-11-04 09:47:47,461 INFO L226 Difference]: Without dead ends: 27235 [2021-11-04 09:47:47,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:47:47,499 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4668 mSDsluCounter, 4798 mSDsCounter, 0 mSdLazyCounter, 14309 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11255.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.78ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13004.39ms IncrementalHoareTripleChecker+Time [2021-11-04 09:47:47,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4668 Valid, 0 Invalid, 14315 Unknown, 0 Unchecked, 13.78ms Time], IncrementalHoareTripleChecker [6 Valid, 14309 Invalid, 0 Unknown, 0 Unchecked, 13004.39ms Time] [2021-11-04 09:47:47,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27235 states. [2021-11-04 09:47:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27235 to 27190. [2021-11-04 09:47:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27190 states, 27166 states have (on average 1.262018699845395) internal successors, (34284), 27189 states have internal predecessors, (34284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27190 states to 27190 states and 34284 transitions. [2021-11-04 09:47:48,096 INFO L78 Accepts]: Start accepts. Automaton has 27190 states and 34284 transitions. Word has length 71 [2021-11-04 09:47:48,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:47:48,096 INFO L470 AbstractCegarLoop]: Abstraction has 27190 states and 34284 transitions. [2021-11-04 09:47:48,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 27190 states and 34284 transitions. [2021-11-04 09:47:48,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-04 09:47:48,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:47:48,099 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 09:47:48,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 09:47:48,100 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:47:48,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:47:48,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2047198752, now seen corresponding path program 1 times [2021-11-04 09:47:48,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:47:48,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871228843] [2021-11-04 09:47:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:47:48,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:47:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:47:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 09:47:48,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:47:48,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871228843] [2021-11-04 09:47:48,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871228843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:47:48,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:47:48,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:47:48,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584632624] [2021-11-04 09:47:48,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:47:48,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:47:48,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:47:48,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:47:48,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:47:48,282 INFO L87 Difference]: Start difference. First operand 27190 states and 34284 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:57,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:47:57,952 INFO L93 Difference]: Finished difference Result 27190 states and 34284 transitions. [2021-11-04 09:47:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 09:47:57,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 72 [2021-11-04 09:47:57,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:47:57,995 INFO L225 Difference]: With dead ends: 27190 [2021-11-04 09:47:57,995 INFO L226 Difference]: Without dead ends: 27184 [2021-11-04 09:47:58,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:47:58,007 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4774 mSDsluCounter, 4801 mSDsCounter, 0 mSdLazyCounter, 9650 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8139.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4774 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.51ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 9650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9275.55ms IncrementalHoareTripleChecker+Time [2021-11-04 09:47:58,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4774 Valid, 0 Invalid, 9661 Unknown, 0 Unchecked, 19.51ms Time], IncrementalHoareTripleChecker [11 Valid, 9650 Invalid, 0 Unknown, 0 Unchecked, 9275.55ms Time] [2021-11-04 09:47:58,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27184 states. [2021-11-04 09:47:58,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27184 to 27184. [2021-11-04 09:47:58,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27184 states, 27163 states have (on average 1.2619371939771011) internal successors, (34278), 27183 states have internal predecessors, (34278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27184 states to 27184 states and 34278 transitions. [2021-11-04 09:47:58,640 INFO L78 Accepts]: Start accepts. Automaton has 27184 states and 34278 transitions. Word has length 72 [2021-11-04 09:47:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:47:58,640 INFO L470 AbstractCegarLoop]: Abstraction has 27184 states and 34278 transitions. [2021-11-04 09:47:58,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:47:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand 27184 states and 34278 transitions. [2021-11-04 09:47:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 09:47:58,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:47:58,643 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 09:47:58,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 09:47:58,644 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:47:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:47:58,644 INFO L85 PathProgramCache]: Analyzing trace with hash -262838269, now seen corresponding path program 1 times [2021-11-04 09:47:58,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:47:58,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314106294] [2021-11-04 09:47:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:47:58,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:47:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:47:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 09:47:58,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:47:58,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314106294] [2021-11-04 09:47:58,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314106294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:47:58,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:47:58,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:47:58,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906010328] [2021-11-04 09:47:58,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:47:58,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:47:58,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:47:58,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:47:58,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:47:58,818 INFO L87 Difference]: Start difference. First operand 27184 states and 34278 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:48:07,502 INFO L93 Difference]: Finished difference Result 27184 states and 34278 transitions. [2021-11-04 09:48:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 09:48:07,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 74 [2021-11-04 09:48:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:48:07,554 INFO L225 Difference]: With dead ends: 27184 [2021-11-04 09:48:07,554 INFO L226 Difference]: Without dead ends: 27178 [2021-11-04 09:48:07,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.04ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:48:07,571 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4763 mSDsluCounter, 4798 mSDsCounter, 0 mSdLazyCounter, 9638 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7242.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4763 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.91ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 9638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8311.14ms IncrementalHoareTripleChecker+Time [2021-11-04 09:48:07,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4763 Valid, 0 Invalid, 9652 Unknown, 0 Unchecked, 17.91ms Time], IncrementalHoareTripleChecker [14 Valid, 9638 Invalid, 0 Unknown, 0 Unchecked, 8311.14ms Time] [2021-11-04 09:48:07,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27178 states. [2021-11-04 09:48:08,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27178 to 27178. [2021-11-04 09:48:08,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27178 states, 27160 states have (on average 1.2618556701030927) internal successors, (34272), 27177 states have internal predecessors, (34272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27178 states to 27178 states and 34272 transitions. [2021-11-04 09:48:08,195 INFO L78 Accepts]: Start accepts. Automaton has 27178 states and 34272 transitions. Word has length 74 [2021-11-04 09:48:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:48:08,195 INFO L470 AbstractCegarLoop]: Abstraction has 27178 states and 34272 transitions. [2021-11-04 09:48:08,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:08,196 INFO L276 IsEmpty]: Start isEmpty. Operand 27178 states and 34272 transitions. [2021-11-04 09:48:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-04 09:48:08,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:48:08,198 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:48:08,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 09:48:08,199 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:48:08,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:48:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash 815635110, now seen corresponding path program 1 times [2021-11-04 09:48:08,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:48:08,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310873373] [2021-11-04 09:48:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:48:08,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:48:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:48:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 09:48:08,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:48:08,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310873373] [2021-11-04 09:48:08,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310873373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:48:08,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:48:08,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:48:08,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737075471] [2021-11-04 09:48:08,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:48:08,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:48:08,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:48:08,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:48:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:48:08,327 INFO L87 Difference]: Start difference. First operand 27178 states and 34272 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:17,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:48:17,437 INFO L93 Difference]: Finished difference Result 27178 states and 34272 transitions. [2021-11-04 09:48:17,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 09:48:17,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 76 [2021-11-04 09:48:17,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:48:17,476 INFO L225 Difference]: With dead ends: 27178 [2021-11-04 09:48:17,476 INFO L226 Difference]: Without dead ends: 27172 [2021-11-04 09:48:17,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:48:17,486 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4712 mSDsluCounter, 4814 mSDsCounter, 0 mSdLazyCounter, 9663 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7639.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4712 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.42ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 9663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8719.25ms IncrementalHoareTripleChecker+Time [2021-11-04 09:48:17,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4712 Valid, 0 Invalid, 9683 Unknown, 0 Unchecked, 15.42ms Time], IncrementalHoareTripleChecker [20 Valid, 9663 Invalid, 0 Unknown, 0 Unchecked, 8719.25ms Time] [2021-11-04 09:48:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27172 states. [2021-11-04 09:48:17,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27172 to 27172. [2021-11-04 09:48:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27172 states, 27157 states have (on average 1.2617741282174024) internal successors, (34266), 27171 states have internal predecessors, (34266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:17,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27172 states to 27172 states and 34266 transitions. [2021-11-04 09:48:17,954 INFO L78 Accepts]: Start accepts. Automaton has 27172 states and 34266 transitions. Word has length 76 [2021-11-04 09:48:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:48:17,954 INFO L470 AbstractCegarLoop]: Abstraction has 27172 states and 34266 transitions. [2021-11-04 09:48:17,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 27172 states and 34266 transitions. [2021-11-04 09:48:17,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-04 09:48:17,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:48:17,957 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 09:48:17,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 09:48:17,957 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:48:17,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:48:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2141434313, now seen corresponding path program 1 times [2021-11-04 09:48:17,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:48:17,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554342677] [2021-11-04 09:48:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:48:17,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:48:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:48:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 09:48:18,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:48:18,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554342677] [2021-11-04 09:48:18,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554342677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:48:18,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:48:18,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:48:18,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342341037] [2021-11-04 09:48:18,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:48:18,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:48:18,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:48:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:48:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:48:18,091 INFO L87 Difference]: Start difference. First operand 27172 states and 34266 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:23,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:48:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:48:28,516 INFO L93 Difference]: Finished difference Result 27172 states and 34266 transitions. [2021-11-04 09:48:28,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 09:48:28,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 78 [2021-11-04 09:48:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:48:28,553 INFO L225 Difference]: With dead ends: 27172 [2021-11-04 09:48:28,553 INFO L226 Difference]: Without dead ends: 26327 [2021-11-04 09:48:28,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:48:28,567 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4744 mSDsluCounter, 4792 mSDsCounter, 0 mSdLazyCounter, 9614 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8900.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4744 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.06ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 9614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10005.25ms IncrementalHoareTripleChecker+Time [2021-11-04 09:48:28,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4744 Valid, 0 Invalid, 9631 Unknown, 0 Unchecked, 14.06ms Time], IncrementalHoareTripleChecker [17 Valid, 9614 Invalid, 0 Unknown, 0 Unchecked, 10005.25ms Time] [2021-11-04 09:48:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26327 states. [2021-11-04 09:48:28,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26327 to 26327. [2021-11-04 09:48:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26327 states, 26315 states have (on average 1.2608018240547216) internal successors, (33178), 26326 states have internal predecessors, (33178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26327 states to 26327 states and 33178 transitions. [2021-11-04 09:48:29,223 INFO L78 Accepts]: Start accepts. Automaton has 26327 states and 33178 transitions. Word has length 78 [2021-11-04 09:48:29,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:48:29,223 INFO L470 AbstractCegarLoop]: Abstraction has 26327 states and 33178 transitions. [2021-11-04 09:48:29,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:29,223 INFO L276 IsEmpty]: Start isEmpty. Operand 26327 states and 33178 transitions. [2021-11-04 09:48:29,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-04 09:48:29,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:48:29,226 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] [2021-11-04 09:48:29,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 09:48:29,226 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:48:29,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:48:29,228 INFO L85 PathProgramCache]: Analyzing trace with hash 124598911, now seen corresponding path program 1 times [2021-11-04 09:48:29,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:48:29,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299929572] [2021-11-04 09:48:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:48:29,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:48:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:48:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 09:48:29,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:48:29,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299929572] [2021-11-04 09:48:29,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299929572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:48:29,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:48:29,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:48:29,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062832698] [2021-11-04 09:48:29,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:48:29,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:48:29,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:48:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:48:29,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:48:29,335 INFO L87 Difference]: Start difference. First operand 26327 states and 33178 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:38,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:48:40,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:48:40,857 INFO L93 Difference]: Finished difference Result 58816 states and 74329 transitions. [2021-11-04 09:48:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:48:40,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2021-11-04 09:48:40,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:48:40,902 INFO L225 Difference]: With dead ends: 58816 [2021-11-04 09:48:40,902 INFO L226 Difference]: Without dead ends: 33356 [2021-11-04 09:48:40,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:48:40,929 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1989 mSDsluCounter, 4704 mSDsCounter, 0 mSdLazyCounter, 11528 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9475.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.73ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10864.69ms IncrementalHoareTripleChecker+Time [2021-11-04 09:48:40,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1989 Valid, 0 Invalid, 11543 Unknown, 0 Unchecked, 12.73ms Time], IncrementalHoareTripleChecker [15 Valid, 11528 Invalid, 0 Unknown, 0 Unchecked, 10864.69ms Time] [2021-11-04 09:48:40,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33356 states. [2021-11-04 09:48:41,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33356 to 33332. [2021-11-04 09:48:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33332 states, 33320 states have (on average 1.2649459783913566) internal successors, (42148), 33331 states have internal predecessors, (42148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:41,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33332 states to 33332 states and 42148 transitions. [2021-11-04 09:48:41,484 INFO L78 Accepts]: Start accepts. Automaton has 33332 states and 42148 transitions. Word has length 80 [2021-11-04 09:48:41,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:48:41,485 INFO L470 AbstractCegarLoop]: Abstraction has 33332 states and 42148 transitions. [2021-11-04 09:48:41,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:41,485 INFO L276 IsEmpty]: Start isEmpty. Operand 33332 states and 42148 transitions. [2021-11-04 09:48:41,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-04 09:48:41,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:48:41,495 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:48:41,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 09:48:41,495 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:48:41,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:48:41,496 INFO L85 PathProgramCache]: Analyzing trace with hash 512191264, now seen corresponding path program 1 times [2021-11-04 09:48:41,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:48:41,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790590661] [2021-11-04 09:48:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:48:41,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:48:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:48:41,594 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 09:48:41,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:48:41,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790590661] [2021-11-04 09:48:41,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790590661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:48:41,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:48:41,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:48:41,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482711917] [2021-11-04 09:48:41,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:48:41,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:48:41,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:48:41,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:48:41,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:48:41,597 INFO L87 Difference]: Start difference. First operand 33332 states and 42148 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:48:52,881 INFO L93 Difference]: Finished difference Result 72802 states and 92221 transitions. [2021-11-04 09:48:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:48:52,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 117 [2021-11-04 09:48:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:48:52,953 INFO L225 Difference]: With dead ends: 72802 [2021-11-04 09:48:52,954 INFO L226 Difference]: Without dead ends: 39551 [2021-11-04 09:48:53,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:48:53,005 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1983 mSDsluCounter, 4717 mSDsCounter, 0 mSdLazyCounter, 11537 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9195.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.66ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 11537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10572.40ms IncrementalHoareTripleChecker+Time [2021-11-04 09:48:53,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 0 Invalid, 11550 Unknown, 0 Unchecked, 12.66ms Time], IncrementalHoareTripleChecker [13 Valid, 11537 Invalid, 0 Unknown, 0 Unchecked, 10572.40ms Time] [2021-11-04 09:48:53,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39551 states. [2021-11-04 09:48:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39551 to 39527. [2021-11-04 09:48:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39527 states, 39515 states have (on average 1.2672909021890422) internal successors, (50077), 39526 states have internal predecessors, (50077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39527 states to 39527 states and 50077 transitions. [2021-11-04 09:48:53,880 INFO L78 Accepts]: Start accepts. Automaton has 39527 states and 50077 transitions. Word has length 117 [2021-11-04 09:48:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:48:53,880 INFO L470 AbstractCegarLoop]: Abstraction has 39527 states and 50077 transitions. [2021-11-04 09:48:53,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:48:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 39527 states and 50077 transitions. [2021-11-04 09:48:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-04 09:48:53,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:48:53,891 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:48:53,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 09:48:53,891 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:48:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:48:53,892 INFO L85 PathProgramCache]: Analyzing trace with hash 934893090, now seen corresponding path program 1 times [2021-11-04 09:48:53,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:48:53,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279857703] [2021-11-04 09:48:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:48:53,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:48:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:48:53,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 09:48:53,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:48:53,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279857703] [2021-11-04 09:48:53,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279857703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:48:53,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:48:53,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:48:53,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232195694] [2021-11-04 09:48:53,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:48:53,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:48:53,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:48:53,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:48:53,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:48:53,991 INFO L87 Difference]: Start difference. First operand 39527 states and 50077 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:49:03,248 INFO L93 Difference]: Finished difference Result 85210 states and 108115 transitions. [2021-11-04 09:49:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:49:03,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 117 [2021-11-04 09:49:03,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:49:03,317 INFO L225 Difference]: With dead ends: 85210 [2021-11-04 09:49:03,317 INFO L226 Difference]: Without dead ends: 46550 [2021-11-04 09:49:03,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:49:03,367 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2795 mSDsluCounter, 3908 mSDsCounter, 0 mSdLazyCounter, 10731 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7153.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2795 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.43ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 10731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8425.51ms IncrementalHoareTripleChecker+Time [2021-11-04 09:49:03,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2795 Valid, 0 Invalid, 10747 Unknown, 0 Unchecked, 11.43ms Time], IncrementalHoareTripleChecker [16 Valid, 10731 Invalid, 0 Unknown, 0 Unchecked, 8425.51ms Time] [2021-11-04 09:49:03,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46550 states. [2021-11-04 09:49:04,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46550 to 46526. [2021-11-04 09:49:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46526 states, 46514 states have (on average 1.269316764844993) internal successors, (59041), 46525 states have internal predecessors, (59041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46526 states to 46526 states and 59041 transitions. [2021-11-04 09:49:04,566 INFO L78 Accepts]: Start accepts. Automaton has 46526 states and 59041 transitions. Word has length 117 [2021-11-04 09:49:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:49:04,566 INFO L470 AbstractCegarLoop]: Abstraction has 46526 states and 59041 transitions. [2021-11-04 09:49:04,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 46526 states and 59041 transitions. [2021-11-04 09:49:04,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-04 09:49:04,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:49:04,582 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:49:04,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-04 09:49:04,582 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:49:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:49:04,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1208625008, now seen corresponding path program 1 times [2021-11-04 09:49:04,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:49:04,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139171607] [2021-11-04 09:49:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:49:04,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:49:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:49:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-04 09:49:04,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:49:04,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139171607] [2021-11-04 09:49:04,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139171607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:49:04,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:49:04,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:49:04,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273626475] [2021-11-04 09:49:04,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:49:04,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:49:04,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:49:04,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:49:04,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:49:04,693 INFO L87 Difference]: Start difference. First operand 46526 states and 59041 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:10,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:49:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:49:16,597 INFO L93 Difference]: Finished difference Result 99196 states and 126019 transitions. [2021-11-04 09:49:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:49:16,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 152 [2021-11-04 09:49:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:49:16,679 INFO L225 Difference]: With dead ends: 99196 [2021-11-04 09:49:16,680 INFO L226 Difference]: Without dead ends: 53537 [2021-11-04 09:49:16,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:49:16,733 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1986 mSDsluCounter, 4715 mSDsCounter, 0 mSdLazyCounter, 10608 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9323.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.20ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 10608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10809.58ms IncrementalHoareTripleChecker+Time [2021-11-04 09:49:16,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1986 Valid, 0 Invalid, 10620 Unknown, 0 Unchecked, 12.20ms Time], IncrementalHoareTripleChecker [12 Valid, 10608 Invalid, 0 Unknown, 0 Unchecked, 10809.58ms Time] [2021-11-04 09:49:16,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53537 states. [2021-11-04 09:49:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53537 to 53513. [2021-11-04 09:49:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53513 states, 53501 states have (on average 1.2708734416179137) internal successors, (67993), 53512 states have internal predecessors, (67993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53513 states to 53513 states and 67993 transitions. [2021-11-04 09:49:18,118 INFO L78 Accepts]: Start accepts. Automaton has 53513 states and 67993 transitions. Word has length 152 [2021-11-04 09:49:18,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:49:18,119 INFO L470 AbstractCegarLoop]: Abstraction has 53513 states and 67993 transitions. [2021-11-04 09:49:18,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:18,119 INFO L276 IsEmpty]: Start isEmpty. Operand 53513 states and 67993 transitions. [2021-11-04 09:49:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-04 09:49:18,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:49:18,130 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 09:49:18,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-04 09:49:18,131 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:49:18,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:49:18,131 INFO L85 PathProgramCache]: Analyzing trace with hash -785923182, now seen corresponding path program 1 times [2021-11-04 09:49:18,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:49:18,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076642143] [2021-11-04 09:49:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:49:18,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:49:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:49:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-04 09:49:18,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:49:18,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076642143] [2021-11-04 09:49:18,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076642143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:49:18,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:49:18,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 09:49:18,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873949313] [2021-11-04 09:49:18,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:49:18,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 09:49:18,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:49:18,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 09:49:18,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 09:49:18,240 INFO L87 Difference]: Start difference. First operand 53513 states and 67993 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:30,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:49:30,299 INFO L93 Difference]: Finished difference Result 113176 states and 143935 transitions. [2021-11-04 09:49:30,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 09:49:30,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 152 [2021-11-04 09:49:30,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:49:30,391 INFO L225 Difference]: With dead ends: 113176 [2021-11-04 09:49:30,391 INFO L226 Difference]: Without dead ends: 60530 [2021-11-04 09:49:30,439 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 [2021-11-04 09:49:30,439 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1995 mSDsluCounter, 4707 mSDsCounter, 0 mSdLazyCounter, 11531 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9470.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.43ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 11531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10902.22ms IncrementalHoareTripleChecker+Time [2021-11-04 09:49:30,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1995 Valid, 0 Invalid, 11544 Unknown, 0 Unchecked, 12.43ms Time], IncrementalHoareTripleChecker [13 Valid, 11531 Invalid, 0 Unknown, 0 Unchecked, 10902.22ms Time] [2021-11-04 09:49:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60530 states. [2021-11-04 09:49:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60530 to 60506. [2021-11-04 09:49:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60506 states, 60494 states have (on average 1.2720435084471187) internal successors, (76951), 60505 states have internal predecessors, (76951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60506 states to 60506 states and 76951 transitions. [2021-11-04 09:49:31,961 INFO L78 Accepts]: Start accepts. Automaton has 60506 states and 76951 transitions. Word has length 152 [2021-11-04 09:49:31,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:49:31,961 INFO L470 AbstractCegarLoop]: Abstraction has 60506 states and 76951 transitions. [2021-11-04 09:49:31,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:31,961 INFO L276 IsEmpty]: Start isEmpty. Operand 60506 states and 76951 transitions. [2021-11-04 09:49:31,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-04 09:49:31,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:49:31,979 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 09:49:31,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-04 09:49:31,980 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:49:31,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:49:31,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1053030962, now seen corresponding path program 1 times [2021-11-04 09:49:31,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:49:31,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526457409] [2021-11-04 09:49:31,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:49:31,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:49:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:49:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-04 09:49:32,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:49:32,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526457409] [2021-11-04 09:49:32,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526457409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:49:32,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:49:32,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:49:32,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965228621] [2021-11-04 09:49:32,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:49:32,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:49:32,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:49:32,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:49:32,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:49:32,094 INFO L87 Difference]: Start difference. First operand 60506 states and 76951 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:56,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:49:56,301 INFO L93 Difference]: Finished difference Result 186615 states and 237419 transitions. [2021-11-04 09:49:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:49:56,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 179 [2021-11-04 09:49:56,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:49:56,531 INFO L225 Difference]: With dead ends: 186615 [2021-11-04 09:49:56,531 INFO L226 Difference]: Without dead ends: 126976 [2021-11-04 09:49:56,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:49:56,620 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9609 mSDsluCounter, 13117 mSDsCounter, 0 mSdLazyCounter, 22188 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18953.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9609 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.92ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21547.67ms IncrementalHoareTripleChecker+Time [2021-11-04 09:49:56,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9609 Valid, 0 Invalid, 22195 Unknown, 0 Unchecked, 38.92ms Time], IncrementalHoareTripleChecker [7 Valid, 22188 Invalid, 0 Unknown, 0 Unchecked, 21547.67ms Time] [2021-11-04 09:49:56,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126976 states. [2021-11-04 09:49:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126976 to 67457. [2021-11-04 09:49:58,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67457 states, 67445 states have (on average 1.2731410779153385) internal successors, (85867), 67456 states have internal predecessors, (85867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67457 states to 67457 states and 85867 transitions. [2021-11-04 09:49:59,037 INFO L78 Accepts]: Start accepts. Automaton has 67457 states and 85867 transitions. Word has length 179 [2021-11-04 09:49:59,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:49:59,038 INFO L470 AbstractCegarLoop]: Abstraction has 67457 states and 85867 transitions. [2021-11-04 09:49:59,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:49:59,038 INFO L276 IsEmpty]: Start isEmpty. Operand 67457 states and 85867 transitions. [2021-11-04 09:49:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-04 09:49:59,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:49:59,059 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 09:49:59,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-04 09:49:59,060 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:49:59,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:49:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash 944978064, now seen corresponding path program 1 times [2021-11-04 09:49:59,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:49:59,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022092406] [2021-11-04 09:49:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:49:59,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:49:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:49:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-04 09:49:59,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:49:59,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022092406] [2021-11-04 09:49:59,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022092406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:49:59,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:49:59,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:49:59,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704201830] [2021-11-04 09:49:59,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:49:59,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:49:59,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:49:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:49:59,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:49:59,170 INFO L87 Difference]: Start difference. First operand 67457 states and 85867 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:50:18,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 09:50:25,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:50:25,334 INFO L93 Difference]: Finished difference Result 200547 states and 255311 transitions. [2021-11-04 09:50:25,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:50:25,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 180 [2021-11-04 09:50:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:50:25,708 INFO L225 Difference]: With dead ends: 200547 [2021-11-04 09:50:25,708 INFO L226 Difference]: Without dead ends: 133957 [2021-11-04 09:50:25,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:50:25,806 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8655 mSDsluCounter, 14079 mSDsCounter, 0 mSdLazyCounter, 23634 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20324.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8655 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.20ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23005.93ms IncrementalHoareTripleChecker+Time [2021-11-04 09:50:25,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8655 Valid, 0 Invalid, 23646 Unknown, 0 Unchecked, 35.20ms Time], IncrementalHoareTripleChecker [12 Valid, 23634 Invalid, 0 Unknown, 0 Unchecked, 23005.93ms Time] [2021-11-04 09:50:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133957 states. [2021-11-04 09:50:28,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133957 to 74438. [2021-11-04 09:50:28,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74438 states, 74426 states have (on average 1.2739230913927928) internal successors, (94813), 74437 states have internal predecessors, (94813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:50:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74438 states to 74438 states and 94813 transitions. [2021-11-04 09:50:28,433 INFO L78 Accepts]: Start accepts. Automaton has 74438 states and 94813 transitions. Word has length 180 [2021-11-04 09:50:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:50:28,433 INFO L470 AbstractCegarLoop]: Abstraction has 74438 states and 94813 transitions. [2021-11-04 09:50:28,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:50:28,433 INFO L276 IsEmpty]: Start isEmpty. Operand 74438 states and 94813 transitions. [2021-11-04 09:50:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-04 09:50:28,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:50:28,451 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 09:50:28,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-04 09:50:28,451 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:50:28,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:50:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1883070705, now seen corresponding path program 1 times [2021-11-04 09:50:28,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:50:28,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101392227] [2021-11-04 09:50:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:50:28,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:50:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:50:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-04 09:50:28,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:50:28,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101392227] [2021-11-04 09:50:28,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101392227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:50:28,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:50:28,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:50:28,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564098190] [2021-11-04 09:50:28,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:50:28,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:50:28,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:50:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:50:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:50:28,566 INFO L87 Difference]: Start difference. First operand 74438 states and 94813 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:50:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:50:50,888 INFO L93 Difference]: Finished difference Result 221442 states and 282105 transitions. [2021-11-04 09:50:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:50:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 181 [2021-11-04 09:50:50,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:50:51,327 INFO L225 Difference]: With dead ends: 221442 [2021-11-04 09:50:51,327 INFO L226 Difference]: Without dead ends: 147871 [2021-11-04 09:50:51,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:50:51,427 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11592 mSDsluCounter, 9245 mSDsCounter, 0 mSdLazyCounter, 17434 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15450.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11592 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 17474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.57ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 17434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17900.46ms IncrementalHoareTripleChecker+Time [2021-11-04 09:50:51,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11592 Valid, 0 Invalid, 17474 Unknown, 0 Unchecked, 33.57ms Time], IncrementalHoareTripleChecker [40 Valid, 17434 Invalid, 0 Unknown, 0 Unchecked, 17900.46ms Time] [2021-11-04 09:50:51,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147871 states. [2021-11-04 09:50:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147871 to 81383. [2021-11-04 09:50:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81383 states, 81371 states have (on average 1.2749874033746667) internal successors, (103747), 81382 states have internal predecessors, (103747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:50:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81383 states to 81383 states and 103747 transitions. [2021-11-04 09:50:54,551 INFO L78 Accepts]: Start accepts. Automaton has 81383 states and 103747 transitions. Word has length 181 [2021-11-04 09:50:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:50:54,552 INFO L470 AbstractCegarLoop]: Abstraction has 81383 states and 103747 transitions. [2021-11-04 09:50:54,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:50:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 81383 states and 103747 transitions. [2021-11-04 09:50:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-04 09:50:54,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:50:54,569 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 09:50:54,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-04 09:50:54,569 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:50:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:50:54,569 INFO L85 PathProgramCache]: Analyzing trace with hash 14690986, now seen corresponding path program 1 times [2021-11-04 09:50:54,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:50:54,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159834335] [2021-11-04 09:50:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:50:54,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:50:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:50:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-04 09:50:54,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:50:54,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159834335] [2021-11-04 09:50:54,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159834335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:50:54,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:50:54,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:50:54,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223762030] [2021-11-04 09:50:54,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:50:54,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:50:54,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:50:54,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:50:54,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:50:54,691 INFO L87 Difference]: Start difference. First operand 81383 states and 103747 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:51:13,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:51:13,549 INFO L93 Difference]: Finished difference Result 213508 states and 272134 transitions. [2021-11-04 09:51:13,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:51:13,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 182 [2021-11-04 09:51:13,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:51:13,794 INFO L225 Difference]: With dead ends: 213508 [2021-11-04 09:51:13,795 INFO L226 Difference]: Without dead ends: 132992 [2021-11-04 09:51:13,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:51:13,890 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10839 mSDsluCounter, 5453 mSDsCounter, 0 mSdLazyCounter, 13109 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12534.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10839 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.07ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 13109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14503.23ms IncrementalHoareTripleChecker+Time [2021-11-04 09:51:13,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10839 Valid, 0 Invalid, 13146 Unknown, 0 Unchecked, 27.07ms Time], IncrementalHoareTripleChecker [37 Valid, 13109 Invalid, 0 Unknown, 0 Unchecked, 14503.23ms Time] [2021-11-04 09:51:14,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132992 states. [2021-11-04 09:51:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132992 to 88334. [2021-11-04 09:51:17,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88334 states, 88322 states have (on average 1.2758655827540137) internal successors, (112687), 88333 states have internal predecessors, (112687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:51:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88334 states to 88334 states and 112687 transitions. [2021-11-04 09:51:17,612 INFO L78 Accepts]: Start accepts. Automaton has 88334 states and 112687 transitions. Word has length 182 [2021-11-04 09:51:17,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 09:51:17,612 INFO L470 AbstractCegarLoop]: Abstraction has 88334 states and 112687 transitions. [2021-11-04 09:51:17,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:51:17,613 INFO L276 IsEmpty]: Start isEmpty. Operand 88334 states and 112687 transitions. [2021-11-04 09:51:17,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-04 09:51:17,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 09:51:17,644 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 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] [2021-11-04 09:51:17,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-04 09:51:17,645 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 21 more)] === [2021-11-04 09:51:17,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 09:51:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash 624205613, now seen corresponding path program 1 times [2021-11-04 09:51:17,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 09:51:17,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026644997] [2021-11-04 09:51:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 09:51:17,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 09:51:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 09:51:17,792 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-04 09:51:17,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 09:51:17,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026644997] [2021-11-04 09:51:17,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026644997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 09:51:17,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 09:51:17,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 09:51:17,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184956968] [2021-11-04 09:51:17,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 09:51:17,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 09:51:17,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 09:51:17,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 09:51:17,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 09:51:17,796 INFO L87 Difference]: Start difference. First operand 88334 states and 112687 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 09:51:36,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 09:51:36,547 INFO L93 Difference]: Finished difference Result 227416 states and 290020 transitions. [2021-11-04 09:51:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 09:51:36,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 203 [2021-11-04 09:51:36,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 09:51:36,807 INFO L225 Difference]: With dead ends: 227416 [2021-11-04 09:51:36,807 INFO L226 Difference]: Without dead ends: 139949 [2021-11-04 09:51:36,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 09:51:36,934 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11389 mSDsluCounter, 4903 mSDsCounter, 0 mSdLazyCounter, 12560 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11327.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11389 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.35ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 12560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13336.07ms IncrementalHoareTripleChecker+Time [2021-11-04 09:51:36,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11389 Valid, 0 Invalid, 12597 Unknown, 0 Unchecked, 27.35ms Time], IncrementalHoareTripleChecker [37 Valid, 12560 Invalid, 0 Unknown, 0 Unchecked, 13336.07ms Time] [2021-11-04 09:51:37,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139949 states.