./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.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-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.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 3ddf607d1745197f42ec93d91371fe3b581377117340b3a7d449f25d43cdec16 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 12:55:56,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 12:55:56,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 12:55:56,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 12:55:56,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 12:55:56,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 12:55:56,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 12:55:56,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 12:55:56,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 12:55:56,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 12:55:56,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 12:55:56,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 12:55:56,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 12:55:56,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 12:55:56,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 12:55:56,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 12:55:56,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 12:55:56,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 12:55:56,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 12:55:56,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 12:55:56,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 12:55:56,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 12:55:56,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 12:55:56,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 12:55:56,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 12:55:56,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 12:55:56,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 12:55:56,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 12:55:56,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 12:55:56,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 12:55:56,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 12:55:56,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 12:55:56,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 12:55:56,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 12:55:56,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 12:55:56,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 12:55:56,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 12:55:56,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 12:55:56,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 12:55:56,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 12:55:56,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 12:55:56,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 12:55:56,855 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 12:55:56,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 12:55:56,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 12:55:56,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 12:55:56,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 12:55:56,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 12:55:56,858 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 12:55:56,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 12:55:56,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 12:55:56,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 12:55:56,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 12:55:56,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 12:55:56,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 12:55:56,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 12:55:56,860 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 12:55:56,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 12:55:56,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 12:55:56,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 12:55:56,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 12:55:56,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 12:55:56,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 12:55:56,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 12:55:56,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 12:55:56,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 12:55:56,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 12:55:56,862 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 12:55:56,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 12:55:56,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 12:55:56,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 12:55:56,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ddf607d1745197f42ec93d91371fe3b581377117340b3a7d449f25d43cdec16 [2021-11-04 12:55:57,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 12:55:57,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 12:55:57,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 12:55:57,102 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 12:55:57,104 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 12:55:57,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-04 12:55:57,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35107714e/a7aa039e7a4443fdaf66e7279013d90f/FLAG55a72ecbd [2021-11-04 12:55:57,910 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 12:55:57,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-04 12:55:57,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35107714e/a7aa039e7a4443fdaf66e7279013d90f/FLAG55a72ecbd [2021-11-04 12:55:58,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35107714e/a7aa039e7a4443fdaf66e7279013d90f [2021-11-04 12:55:58,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 12:55:58,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 12:55:58,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 12:55:58,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 12:55:58,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 12:55:58,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 12:55:58" (1/1) ... [2021-11-04 12:55:58,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ef4427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:55:58, skipping insertion in model container [2021-11-04 12:55:58,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 12:55:58" (1/1) ... [2021-11-04 12:55:58,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 12:55:58,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 12:56:01,041 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-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402050,402063] [2021-11-04 12:56:01,045 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-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402195,402208] [2021-11-04 12:56:01,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 12:56:01,117 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 12:56:01,439 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-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402050,402063] [2021-11-04 12:56:01,440 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-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[402195,402208] [2021-11-04 12:56:01,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 12:56:01,649 INFO L208 MainTranslator]: Completed translation [2021-11-04 12:56:01,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01 WrapperNode [2021-11-04 12:56:01,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 12:56:01,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 12:56:01,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 12:56:01,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 12:56:01,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01" (1/1) ... [2021-11-04 12:56:01,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01" (1/1) ... [2021-11-04 12:56:02,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 12:56:02,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 12:56:02,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 12:56:02,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 12:56:02,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01" (1/1) ... [2021-11-04 12:56:02,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01" (1/1) ... [2021-11-04 12:56:02,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01" (1/1) ... [2021-11-04 12:56:02,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01" (1/1) ... [2021-11-04 12:56:02,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01" (1/1) ... [2021-11-04 12:56:02,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01" (1/1) ... [2021-11-04 12:56:02,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01" (1/1) ... [2021-11-04 12:56:02,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 12:56:02,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 12:56:02,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 12:56:02,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 12:56:02,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01" (1/1) ... [2021-11-04 12:56:02,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 12:56:02,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 12:56:02,500 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 12:56:02,526 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 12:56:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 12:56:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 12:56:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 12:56:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 12:56:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 12:56:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 12:56:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 12:56:02,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 12:56:02,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 12:56:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 12:56:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 12:56:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 12:56:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 12:56:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 12:56:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 12:56:14,137 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_20_returnLabel: main_#res := 0; [2021-11-04 12:56:14,138 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint L11385: #t~ret1430 := main_#res; [2021-11-04 12:56:14,138 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 12:56:14,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 12:56:14,154 INFO L299 CfgBuilder]: Removed 2820 assume(true) statements. [2021-11-04 12:56:14,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 12:56:14 BoogieIcfgContainer [2021-11-04 12:56:14,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 12:56:14,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 12:56:14,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 12:56:14,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 12:56:14,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 12:55:58" (1/3) ... [2021-11-04 12:56:14,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358ca66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 12:56:14, skipping insertion in model container [2021-11-04 12:56:14,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 12:56:01" (2/3) ... [2021-11-04 12:56:14,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@358ca66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 12:56:14, skipping insertion in model container [2021-11-04 12:56:14,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 12:56:14" (3/3) ... [2021-11-04 12:56:14,165 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-04 12:56:14,169 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 12:56:14,170 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-04 12:56:14,214 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 12:56:14,220 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 12:56:14,221 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-04 12:56:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 2445 states, 2433 states have (on average 1.3596383066173447) internal successors, (3308), 2444 states have internal predecessors, (3308), 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 12:56:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-04 12:56:14,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:56:14,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:56:14,279 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 12:56:14,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:56:14,286 INFO L85 PathProgramCache]: Analyzing trace with hash 646160627, now seen corresponding path program 1 times [2021-11-04 12:56:14,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:56:14,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071879274] [2021-11-04 12:56:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:56:14,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:56:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:56:15,105 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 12:56:15,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:56:15,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071879274] [2021-11-04 12:56:15,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071879274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:56:15,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:56:15,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 12:56:15,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566592857] [2021-11-04 12:56:15,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:56:15,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 12:56:15,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:56:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 12:56:15,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:56:15,211 INFO L87 Difference]: Start difference. First operand has 2445 states, 2433 states have (on average 1.3596383066173447) internal successors, (3308), 2444 states have internal predecessors, (3308), 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 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 12:56:17,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:56:22,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:56:24,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:56:27,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:56:30,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:56:33,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:56:35,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:56:45,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:56:47,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 12:56:50,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:56:52,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:01,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:57:01,340 INFO L93 Difference]: Finished difference Result 7244 states and 9800 transitions. [2021-11-04 12:57:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 12:57:01,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 12:57:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:57:01,375 INFO L225 Difference]: With dead ends: 7244 [2021-11-04 12:57:01,376 INFO L226 Difference]: Without dead ends: 4489 [2021-11-04 12:57:01,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 12:57:01,386 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 3163 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 6191 mSolverCounterSat, 11 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43106.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3163 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 6213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.56ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6191 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45346.84ms IncrementalHoareTripleChecker+Time [2021-11-04 12:57:01,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3163 Valid, 276 Invalid, 6213 Unknown, 0 Unchecked, 58.56ms Time], IncrementalHoareTripleChecker [11 Valid, 6191 Invalid, 11 Unknown, 0 Unchecked, 45346.84ms Time] [2021-11-04 12:57:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2021-11-04 12:57:01,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4465. [2021-11-04 12:57:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4465 states, 4453 states have (on average 1.3054120817426453) internal successors, (5813), 4464 states have internal predecessors, (5813), 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 12:57:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 5813 transitions. [2021-11-04 12:57:01,554 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 5813 transitions. Word has length 76 [2021-11-04 12:57:01,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:57:01,556 INFO L470 AbstractCegarLoop]: Abstraction has 4465 states and 5813 transitions. [2021-11-04 12:57:01,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 12:57:01,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 5813 transitions. [2021-11-04 12:57:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-04 12:57:01,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:57:01,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:57:01,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 12:57:01,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 12:57:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:57:01,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1444212299, now seen corresponding path program 1 times [2021-11-04 12:57:01,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:57:01,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964945062] [2021-11-04 12:57:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:57:01,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:57:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:57:01,939 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 12:57:01,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:57:01,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964945062] [2021-11-04 12:57:01,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964945062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:57:01,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:57:01,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 12:57:01,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784495342] [2021-11-04 12:57:01,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:57:01,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 12:57:01,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:57:01,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 12:57:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 12:57:01,943 INFO L87 Difference]: Start difference. First operand 4465 states and 5813 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 12:57:03,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:09,510 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:11,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:13,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:17,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:19,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:24,012 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:26,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:28,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:31,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:33,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:41,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:50,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:52,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:57:56,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:58:03,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 12:58:17,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:58:22,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:58:22,038 INFO L93 Difference]: Finished difference Result 13260 states and 17009 transitions. [2021-11-04 12:58:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 12:58:22,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2021-11-04 12:58:22,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:58:22,071 INFO L225 Difference]: With dead ends: 13260 [2021-11-04 12:58:22,071 INFO L226 Difference]: Without dead ends: 8829 [2021-11-04 12:58:22,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 12:58:22,080 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7963 mSDsluCounter, 7649 mSDsCounter, 0 mSdLazyCounter, 12876 mSolverCounterSat, 45 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75149.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7963 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.79ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 12876 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79018.48ms IncrementalHoareTripleChecker+Time [2021-11-04 12:58:22,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7963 Valid, 0 Invalid, 12938 Unknown, 0 Unchecked, 105.79ms Time], IncrementalHoareTripleChecker [45 Valid, 12876 Invalid, 17 Unknown, 0 Unchecked, 79018.48ms Time] [2021-11-04 12:58:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8829 states. [2021-11-04 12:58:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8829 to 6607. [2021-11-04 12:58:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6607 states, 6595 states have (on average 1.2829416224412433) internal successors, (8461), 6606 states have internal predecessors, (8461), 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 12:58:22,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6607 states to 6607 states and 8461 transitions. [2021-11-04 12:58:22,259 INFO L78 Accepts]: Start accepts. Automaton has 6607 states and 8461 transitions. Word has length 77 [2021-11-04 12:58:22,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:58:22,261 INFO L470 AbstractCegarLoop]: Abstraction has 6607 states and 8461 transitions. [2021-11-04 12:58:22,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 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 12:58:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 6607 states and 8461 transitions. [2021-11-04 12:58:22,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-04 12:58:22,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:58:22,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:58:22,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 12:58:22,263 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 12:58:22,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:58:22,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1821114610, now seen corresponding path program 1 times [2021-11-04 12:58:22,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:58:22,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779399691] [2021-11-04 12:58:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:58:22,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:58:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:58:22,567 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 12:58:22,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:58:22,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779399691] [2021-11-04 12:58:22,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779399691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:58:22,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:58:22,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 12:58:22,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969052850] [2021-11-04 12:58:22,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:58:22,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 12:58:22,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:58:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 12:58:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 12:58:22,569 INFO L87 Difference]: Start difference. First operand 6607 states and 8461 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 12:58:24,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:58:29,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:58:33,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:58:37,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:58:40,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:58:43,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:58:45,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:58:52,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:00,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:03,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:06,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:11,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:16,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:18,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:21,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:24,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:29,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:40,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:43,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:47,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 12:59:47,404 INFO L93 Difference]: Finished difference Result 21494 states and 27277 transitions. [2021-11-04 12:59:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 12:59:47,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 12:59:47,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 12:59:47,454 INFO L225 Difference]: With dead ends: 21494 [2021-11-04 12:59:47,454 INFO L226 Difference]: Without dead ends: 14921 [2021-11-04 12:59:47,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 12:59:47,468 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8568 mSDsluCounter, 8003 mSDsCounter, 0 mSdLazyCounter, 13524 mSolverCounterSat, 53 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79731.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8568 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 93.06ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 13524 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83661.43ms IncrementalHoareTripleChecker+Time [2021-11-04 12:59:47,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8568 Valid, 0 Invalid, 13596 Unknown, 0 Unchecked, 93.06ms Time], IncrementalHoareTripleChecker [53 Valid, 13524 Invalid, 19 Unknown, 0 Unchecked, 83661.43ms Time] [2021-11-04 12:59:47,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14921 states. [2021-11-04 12:59:47,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14921 to 14103. [2021-11-04 12:59:47,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14103 states, 14091 states have (on average 1.264211198637428) internal successors, (17814), 14102 states have internal predecessors, (17814), 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 12:59:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14103 states to 14103 states and 17814 transitions. [2021-11-04 12:59:47,923 INFO L78 Accepts]: Start accepts. Automaton has 14103 states and 17814 transitions. Word has length 78 [2021-11-04 12:59:47,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 12:59:47,924 INFO L470 AbstractCegarLoop]: Abstraction has 14103 states and 17814 transitions. [2021-11-04 12:59:47,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 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 12:59:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand 14103 states and 17814 transitions. [2021-11-04 12:59:47,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-04 12:59:47,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 12:59:47,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 12:59:47,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 12:59:47,928 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 12:59:47,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 12:59:47,929 INFO L85 PathProgramCache]: Analyzing trace with hash -620035408, now seen corresponding path program 1 times [2021-11-04 12:59:47,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 12:59:47,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637614016] [2021-11-04 12:59:47,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 12:59:47,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 12:59:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 12:59:48,214 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 12:59:48,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 12:59:48,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637614016] [2021-11-04 12:59:48,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637614016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 12:59:48,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 12:59:48,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 12:59:48,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145183938] [2021-11-04 12:59:48,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 12:59:48,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 12:59:48,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 12:59:48,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 12:59:48,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 12:59:48,216 INFO L87 Difference]: Start difference. First operand 14103 states and 17814 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 12:59:50,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:55,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 12:59:59,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:00:03,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:00:06,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:00:10,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:00:27,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:00:29,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:00:33,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:00:44,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:00:47,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:00:54,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:01:07,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:01:14,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 13:01:14,206 INFO L93 Difference]: Finished difference Result 38905 states and 48919 transitions. [2021-11-04 13:01:14,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 13:01:14,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-04 13:01:14,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 13:01:14,273 INFO L225 Difference]: With dead ends: 38905 [2021-11-04 13:01:14,273 INFO L226 Difference]: Without dead ends: 24836 [2021-11-04 13:01:14,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 13:01:14,301 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8557 mSDsluCounter, 8054 mSDsCounter, 0 mSdLazyCounter, 13600 mSolverCounterSat, 53 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79568.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8557 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 111.39ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 13600 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84323.71ms IncrementalHoareTripleChecker+Time [2021-11-04 13:01:14,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8557 Valid, 0 Invalid, 13666 Unknown, 0 Unchecked, 111.39ms Time], IncrementalHoareTripleChecker [53 Valid, 13600 Invalid, 13 Unknown, 0 Unchecked, 84323.71ms Time] [2021-11-04 13:01:14,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24836 states. [2021-11-04 13:01:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24836 to 21817. [2021-11-04 13:01:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21817 states, 21805 states have (on average 1.2579683558816785) internal successors, (27430), 21816 states have internal predecessors, (27430), 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 13:01:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21817 states to 21817 states and 27430 transitions. [2021-11-04 13:01:14,943 INFO L78 Accepts]: Start accepts. Automaton has 21817 states and 27430 transitions. Word has length 79 [2021-11-04 13:01:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 13:01:14,943 INFO L470 AbstractCegarLoop]: Abstraction has 21817 states and 27430 transitions. [2021-11-04 13:01:14,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 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 13:01:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 21817 states and 27430 transitions. [2021-11-04 13:01:14,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-04 13:01:14,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 13:01:14,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 13:01:14,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 13:01:14,947 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 13:01:14,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 13:01:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2041136855, now seen corresponding path program 1 times [2021-11-04 13:01:14,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 13:01:14,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388898475] [2021-11-04 13:01:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 13:01:14,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 13:01:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 13:01:15,421 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 13:01:15,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 13:01:15,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388898475] [2021-11-04 13:01:15,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388898475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 13:01:15,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 13:01:15,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 13:01:15,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18111413] [2021-11-04 13:01:15,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 13:01:15,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 13:01:15,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 13:01:15,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 13:01:15,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 13:01:15,423 INFO L87 Difference]: Start difference. First operand 21817 states and 27430 transitions. Second operand has 4 states, 4 states have (on average 20.0) 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 13:01:17,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:01:23,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:01:25,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:01:28,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:01:33,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:01:35,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:01:38,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:01:42,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:01:45,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:01:55,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 13:02:01,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:02:21,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:02:32,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:02:34,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:02:38,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:02:43,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 13:02:43,735 INFO L93 Difference]: Finished difference Result 72220 states and 90659 transitions. [2021-11-04 13:02:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 13:02:43,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) 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 13:02:43,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 13:02:43,842 INFO L225 Difference]: With dead ends: 72220 [2021-11-04 13:02:43,843 INFO L226 Difference]: Without dead ends: 53396 [2021-11-04 13:02:43,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 13:02:43,891 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7758 mSDsluCounter, 7829 mSDsCounter, 0 mSdLazyCounter, 13116 mSolverCounterSat, 57 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80746.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7758 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 100.93ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 13116 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86311.54ms IncrementalHoareTripleChecker+Time [2021-11-04 13:02:43,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7758 Valid, 0 Invalid, 13188 Unknown, 0 Unchecked, 100.93ms Time], IncrementalHoareTripleChecker [57 Valid, 13116 Invalid, 15 Unknown, 0 Unchecked, 86311.54ms Time] [2021-11-04 13:02:43,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53396 states. [2021-11-04 13:02:45,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53396 to 50165. [2021-11-04 13:02:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50165 states, 50153 states have (on average 1.2525671445377147) internal successors, (62820), 50164 states have internal predecessors, (62820), 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 13:02:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50165 states to 50165 states and 62820 transitions. [2021-11-04 13:02:45,452 INFO L78 Accepts]: Start accepts. Automaton has 50165 states and 62820 transitions. Word has length 80 [2021-11-04 13:02:45,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 13:02:45,459 INFO L470 AbstractCegarLoop]: Abstraction has 50165 states and 62820 transitions. [2021-11-04 13:02:45,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) 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 13:02:45,460 INFO L276 IsEmpty]: Start isEmpty. Operand 50165 states and 62820 transitions. [2021-11-04 13:02:45,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-04 13:02:45,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 13:02:45,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 13:02:45,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 13:02:45,462 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 13:02:45,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 13:02:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1149507499, now seen corresponding path program 1 times [2021-11-04 13:02:45,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 13:02:45,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281230552] [2021-11-04 13:02:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 13:02:45,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 13:02:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 13:02:46,072 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 13:02:46,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 13:02:46,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281230552] [2021-11-04 13:02:46,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281230552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 13:02:46,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 13:02:46,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 13:02:46,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454353527] [2021-11-04 13:02:46,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 13:02:46,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 13:02:46,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 13:02:46,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 13:02:46,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 13:02:46,074 INFO L87 Difference]: Start difference. First operand 50165 states and 62820 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 13:02:48,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:02:53,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:02:56,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:02:58,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:03:01,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:03:07,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:03:10,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:03:18,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:03:30,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:03:35,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 13:03:38,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:03:41,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:03:50,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:01,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:08,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 13:04:21,853 INFO L93 Difference]: Finished difference Result 123541 states and 154605 transitions. [2021-11-04 13:04:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 13:04:21,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2021-11-04 13:04:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 13:04:22,197 INFO L225 Difference]: With dead ends: 123541 [2021-11-04 13:04:22,198 INFO L226 Difference]: Without dead ends: 78761 [2021-11-04 13:04:22,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 105.62ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 13:04:22,288 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8484 mSDsluCounter, 8118 mSDsCounter, 0 mSdLazyCounter, 13663 mSolverCounterSat, 49 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82917.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8484 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 129.11ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13663 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92661.64ms IncrementalHoareTripleChecker+Time [2021-11-04 13:04:22,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8484 Valid, 0 Invalid, 13727 Unknown, 0 Unchecked, 129.11ms Time], IncrementalHoareTripleChecker [49 Valid, 13663 Invalid, 15 Unknown, 0 Unchecked, 92661.64ms Time] [2021-11-04 13:04:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78761 states. [2021-11-04 13:04:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78761 to 76880. [2021-11-04 13:04:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76880 states, 76868 states have (on average 1.2496097205599208) internal successors, (96055), 76879 states have internal predecessors, (96055), 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 13:04:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76880 states to 76880 states and 96055 transitions. [2021-11-04 13:04:24,726 INFO L78 Accepts]: Start accepts. Automaton has 76880 states and 96055 transitions. Word has length 81 [2021-11-04 13:04:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 13:04:24,726 INFO L470 AbstractCegarLoop]: Abstraction has 76880 states and 96055 transitions. [2021-11-04 13:04:24,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 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 13:04:24,727 INFO L276 IsEmpty]: Start isEmpty. Operand 76880 states and 96055 transitions. [2021-11-04 13:04:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-04 13:04:24,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 13:04:24,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 13:04:24,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 13:04:24,730 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 13:04:24,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 13:04:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1275383620, now seen corresponding path program 1 times [2021-11-04 13:04:24,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 13:04:24,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537822640] [2021-11-04 13:04:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 13:04:24,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 13:04:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 13:04:25,004 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 13:04:25,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 13:04:25,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537822640] [2021-11-04 13:04:25,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537822640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 13:04:25,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 13:04:25,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 13:04:25,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396629657] [2021-11-04 13:04:25,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 13:04:25,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 13:04:25,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 13:04:25,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 13:04:25,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 13:04:25,006 INFO L87 Difference]: Start difference. First operand 76880 states and 96055 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 13:04:27,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:32,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:35,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:37,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:40,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:43,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:46,521 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:51,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:54,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:04:56,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:05:08,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 13:05:19,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:05:22,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:05:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 13:05:54,020 INFO L93 Difference]: Finished difference Result 160635 states and 200677 transitions. [2021-11-04 13:05:54,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 13:05:54,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-11-04 13:05:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 13:05:54,473 INFO L225 Difference]: With dead ends: 160635 [2021-11-04 13:05:54,473 INFO L226 Difference]: Without dead ends: 91362 [2021-11-04 13:05:54,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 13:05:54,639 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7523 mSDsluCounter, 7859 mSDsCounter, 0 mSdLazyCounter, 13121 mSolverCounterSat, 45 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77037.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7523 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 100.42ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 13121 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85476.94ms IncrementalHoareTripleChecker+Time [2021-11-04 13:05:54,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7523 Valid, 0 Invalid, 13179 Unknown, 0 Unchecked, 100.42ms Time], IncrementalHoareTripleChecker [45 Valid, 13121 Invalid, 13 Unknown, 0 Unchecked, 85476.94ms Time] [2021-11-04 13:05:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91362 states. [2021-11-04 13:05:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91362 to 90872. [2021-11-04 13:05:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90872 states, 90860 states have (on average 1.2478758529605987) internal successors, (113382), 90871 states have internal predecessors, (113382), 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 13:05:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90872 states to 90872 states and 113382 transitions. [2021-11-04 13:05:58,137 INFO L78 Accepts]: Start accepts. Automaton has 90872 states and 113382 transitions. Word has length 82 [2021-11-04 13:05:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 13:05:58,137 INFO L470 AbstractCegarLoop]: Abstraction has 90872 states and 113382 transitions. [2021-11-04 13:05:58,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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 13:05:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 90872 states and 113382 transitions. [2021-11-04 13:05:58,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-04 13:05:58,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 13:05:58,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 13:05:58,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 13:05:58,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 13:05:58,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 13:05:58,141 INFO L85 PathProgramCache]: Analyzing trace with hash 882725030, now seen corresponding path program 1 times [2021-11-04 13:05:58,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 13:05:58,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282469585] [2021-11-04 13:05:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 13:05:58,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 13:05:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 13:05:58,933 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 13:05:58,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 13:05:58,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282469585] [2021-11-04 13:05:58,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282469585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 13:05:58,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 13:05:58,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 13:05:58,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758669154] [2021-11-04 13:05:58,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 13:05:58,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 13:05:58,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 13:05:58,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 13:05:58,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 13:05:58,935 INFO L87 Difference]: Start difference. First operand 90872 states and 113382 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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 13:06:01,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:06:07,860 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:06:10,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:06:14,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:06:19,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:06:22,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:06:25,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:06:36,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:06:45,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 13:06:48,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:06:51,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:07:02,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:07:06,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:07:18,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:07:24,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 13:07:31,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 13:07:31,739 INFO L93 Difference]: Finished difference Result 216049 states and 269449 transitions. [2021-11-04 13:07:31,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 13:07:31,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-04 13:07:31,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 13:07:32,166 INFO L225 Difference]: With dead ends: 216049 [2021-11-04 13:07:32,167 INFO L226 Difference]: Without dead ends: 132784 [2021-11-04 13:07:32,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.83ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 13:07:32,265 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8438 mSDsluCounter, 8205 mSDsCounter, 0 mSdLazyCounter, 13744 mSolverCounterSat, 45 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78941.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8438 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.34ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 13744 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88810.24ms IncrementalHoareTripleChecker+Time [2021-11-04 13:07:32,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8438 Valid, 0 Invalid, 13804 Unknown, 0 Unchecked, 101.34ms Time], IncrementalHoareTripleChecker [45 Valid, 13744 Invalid, 15 Unknown, 0 Unchecked, 88810.24ms Time] [2021-11-04 13:07:32,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132784 states. [2021-11-04 13:07:35,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132784 to 129652. [2021-11-04 13:07:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129652 states, 129640 states have (on average 1.2463745757482259) internal successors, (161580), 129651 states have internal predecessors, (161580), 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 13:07:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129652 states to 129652 states and 161580 transitions. [2021-11-04 13:07:35,769 INFO L78 Accepts]: Start accepts. Automaton has 129652 states and 161580 transitions. Word has length 83 [2021-11-04 13:07:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 13:07:35,769 INFO L470 AbstractCegarLoop]: Abstraction has 129652 states and 161580 transitions. [2021-11-04 13:07:35,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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 13:07:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 129652 states and 161580 transitions. [2021-11-04 13:07:35,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-04 13:07:35,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 13:07:35,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 13:07:35,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 13:07:35,773 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 13:07:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 13:07:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1595359583, now seen corresponding path program 1 times [2021-11-04 13:07:35,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 13:07:35,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463527194] [2021-11-04 13:07:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 13:07:35,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 13:07:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 13:07:36,049 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 13:07:36,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 13:07:36,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463527194] [2021-11-04 13:07:36,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463527194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 13:07:36,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 13:07:36,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 13:07:36,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067175974] [2021-11-04 13:07:36,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 13:07:36,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 13:07:36,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 13:07:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 13:07:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 13:07:36,051 INFO L87 Difference]: Start difference. First operand 129652 states and 161580 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 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 13:07:38,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:07:45,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:07:47,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:07:51,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:07:57,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:07:59,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:08:02,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:08:05,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:08:18,246 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:08:27,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:08:31,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:08:34,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:08:47,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:08:50,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:08:55,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:09:07,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:09:19,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 13:09:19,639 INFO L93 Difference]: Finished difference Result 285061 states and 355060 transitions. [2021-11-04 13:09:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 13:09:19,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-04 13:09:19,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 13:09:20,085 INFO L225 Difference]: With dead ends: 285061 [2021-11-04 13:09:20,085 INFO L226 Difference]: Without dead ends: 163016 [2021-11-04 13:09:20,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 13:09:20,213 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8384 mSDsluCounter, 8231 mSDsCounter, 0 mSdLazyCounter, 13761 mSolverCounterSat, 45 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87048.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8384 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 107.07ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 13761 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98078.98ms IncrementalHoareTripleChecker+Time [2021-11-04 13:09:20,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8384 Valid, 0 Invalid, 13822 Unknown, 0 Unchecked, 107.07ms Time], IncrementalHoareTripleChecker [45 Valid, 13761 Invalid, 16 Unknown, 0 Unchecked, 98078.98ms Time] [2021-11-04 13:09:20,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163016 states. [2021-11-04 13:09:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163016 to 150404. [2021-11-04 13:09:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150404 states, 150392 states have (on average 1.245411989999468) internal successors, (187300), 150403 states have internal predecessors, (187300), 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 13:09:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150404 states to 150404 states and 187300 transitions. [2021-11-04 13:09:24,534 INFO L78 Accepts]: Start accepts. Automaton has 150404 states and 187300 transitions. Word has length 84 [2021-11-04 13:09:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 13:09:24,535 INFO L470 AbstractCegarLoop]: Abstraction has 150404 states and 187300 transitions. [2021-11-04 13:09:24,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 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 13:09:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 150404 states and 187300 transitions. [2021-11-04 13:09:24,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-04 13:09:24,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 13:09:24,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 13:09:24,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 13:09:24,538 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 13:09:24,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 13:09:24,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2082624095, now seen corresponding path program 1 times [2021-11-04 13:09:24,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 13:09:24,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120029012] [2021-11-04 13:09:24,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 13:09:24,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 13:09:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 13:09:24,771 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 13:09:24,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 13:09:24,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120029012] [2021-11-04 13:09:24,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120029012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 13:09:24,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 13:09:24,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 13:09:24,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94681794] [2021-11-04 13:09:24,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 13:09:24,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 13:09:24,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 13:09:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 13:09:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 13:09:24,773 INFO L87 Difference]: Start difference. First operand 150404 states and 187300 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 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 13:09:26,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:09:32,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:09:35,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:09:38,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:09:43,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:09:46,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 13:09:49,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15