./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.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 cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 23:20:21,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:20:21,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:20:21,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:20:21,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:20:21,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:20:21,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:20:21,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:20:21,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:20:21,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:20:21,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:20:21,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:20:21,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:20:21,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:20:21,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:20:21,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:20:21,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:20:21,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:20:21,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:20:21,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:20:21,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:20:21,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:20:21,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:20:21,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:20:21,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:20:21,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:20:21,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:20:21,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:20:21,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:20:21,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:20:21,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:20:21,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:20:21,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:20:21,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:20:21,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:20:21,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:20:21,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:20:21,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:20:21,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:20:21,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:20:21,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:20:21,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 23:20:21,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:20:21,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:20:21,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:20:21,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:20:21,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:20:21,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:20:21,557 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:20:21,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:20:21,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:20:21,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:20:21,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:20:21,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:20:21,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:20:21,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:20:21,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:20:21,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:20:21,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:20:21,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:20:21,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:20:21,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:20:21,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:20:21,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:20:21,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:20:21,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:20:21,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:20:21,561 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:20:21,561 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:20:21,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:20:21,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:20:21,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cde51297e6fd0e941efee971bf40d8442d789ab4fb58443b4ef667bb6a80abb8 [2021-11-02 23:20:21,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:20:21,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:20:21,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:20:21,823 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:20:21,824 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:20:21,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-02 23:20:21,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea125b5f/966a4fb2acdd4b4cb9ea1a1e96f35cfd/FLAG1b9f976a5 [2021-11-02 23:20:22,674 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:20:22,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-02 23:20:22,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea125b5f/966a4fb2acdd4b4cb9ea1a1e96f35cfd/FLAG1b9f976a5 [2021-11-02 23:20:23,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea125b5f/966a4fb2acdd4b4cb9ea1a1e96f35cfd [2021-11-02 23:20:23,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:20:23,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:20:23,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:20:23,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:20:23,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:20:23,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:20:23" (1/1) ... [2021-11-02 23:20:23,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296323ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:23, skipping insertion in model container [2021-11-02 23:20:23,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:20:23" (1/1) ... [2021-11-02 23:20:23,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:20:23,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:20:26,620 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-11-02 23:20:26,623 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-11-02 23:20:26,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:20:26,715 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:20:27,060 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464446,464459] [2021-11-02 23:20:27,061 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i[464591,464604] [2021-11-02 23:20:27,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:20:27,297 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:20:27,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27 WrapperNode [2021-11-02 23:20:27,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:20:27,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:20:27,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:20:27,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:20:27,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27" (1/1) ... [2021-11-02 23:20:27,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27" (1/1) ... [2021-11-02 23:20:28,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:20:28,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:20:28,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:20:28,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:20:28,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27" (1/1) ... [2021-11-02 23:20:28,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27" (1/1) ... [2021-11-02 23:20:28,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27" (1/1) ... [2021-11-02 23:20:28,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27" (1/1) ... [2021-11-02 23:20:29,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27" (1/1) ... [2021-11-02 23:20:29,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27" (1/1) ... [2021-11-02 23:20:29,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27" (1/1) ... [2021-11-02 23:20:29,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:20:29,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:20:29,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:20:29,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:20:29,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27" (1/1) ... [2021-11-02 23:20:29,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:20:29,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 23:20:29,907 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) [2021-11-02 23:20:29,980 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 [2021-11-02 23:20:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:20:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 23:20:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 23:20:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 23:20:30,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:20:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:20:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 23:20:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:20:30,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:20:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 23:20:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 23:20:30,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:20:30,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:20:30,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 23:20:30,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 23:20:30,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:20:41,543 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-02 23:20:41,543 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-02 23:20:41,544 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-02 23:20:41,545 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-02 23:20:41,545 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-02 23:20:41,546 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-02 23:20:41,584 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:20:41,585 INFO L299 CfgBuilder]: Removed 8216 assume(true) statements. [2021-11-02 23:20:41,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:20:41 BoogieIcfgContainer [2021-11-02 23:20:41,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:20:41,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:20:41,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:20:41,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:20:41,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:20:23" (1/3) ... [2021-11-02 23:20:41,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c06c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:20:41, skipping insertion in model container [2021-11-02 23:20:41,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:27" (2/3) ... [2021-11-02 23:20:41,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c06c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:20:41, skipping insertion in model container [2021-11-02 23:20:41,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:20:41" (3/3) ... [2021-11-02 23:20:41,603 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-atheros-atl1e-atl1e.cil.i [2021-11-02 23:20:41,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:20:41,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-02 23:20:41,676 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:20:41,682 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 [2021-11-02 23:20:41,682 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-02 23:20:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 7725 states, 7720 states have (on average 1.3373056994818653) internal successors, (10324), 7724 states have internal predecessors, (10324), 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) [2021-11-02 23:20:41,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 23:20:41,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:20:41,814 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] [2021-11-02 23:20:41,815 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 23:20:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:20:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1331870173, now seen corresponding path program 1 times [2021-11-02 23:20:42,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:20:42,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546109051] [2021-11-02 23:20:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:20:42,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:20:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:20:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:20:42,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:20:42,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546109051] [2021-11-02 23:20:42,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546109051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:20:42,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:20:42,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:20:42,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422913544] [2021-11-02 23:20:42,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:20:42,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:20:42,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:20:42,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:20:42,792 INFO L87 Difference]: Start difference. First operand has 7725 states, 7720 states have (on average 1.3373056994818653) internal successors, (10324), 7724 states have internal predecessors, (10324), 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 26.0) 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) [2021-11-02 23:20:44,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:21:08,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:21:37,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:22:01,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:22:23,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:22:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:22:29,545 INFO L93 Difference]: Finished difference Result 20247 states and 27074 transitions. [2021-11-02 23:22:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:22:29,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) 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 [2021-11-02 23:22:29,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:22:29,625 INFO L225 Difference]: With dead ends: 20247 [2021-11-02 23:22:29,625 INFO L226 Difference]: Without dead ends: 12303 [2021-11-02 23:22:29,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:22:29,664 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 6681 mSDsluCounter, 10036 mSDsCounter, 0 mSdLazyCounter, 20083 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98330.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6681 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 20094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 168.89ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20083 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104777.55ms IncrementalHoareTripleChecker+Time [2021-11-02 23:22:29,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6681 Valid, 284 Invalid, 20094 Unknown, 0 Unchecked, 168.89ms Time], IncrementalHoareTripleChecker [7 Valid, 20083 Invalid, 4 Unknown, 0 Unchecked, 104777.55ms Time] [2021-11-02 23:22:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12303 states. [2021-11-02 23:22:29,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12303 to 12069. [2021-11-02 23:22:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12069 states, 12064 states have (on average 1.3204575596816976) internal successors, (15930), 12068 states have internal predecessors, (15930), 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) [2021-11-02 23:22:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12069 states to 12069 states and 15930 transitions. [2021-11-02 23:22:30,053 INFO L78 Accepts]: Start accepts. Automaton has 12069 states and 15930 transitions. Word has length 78 [2021-11-02 23:22:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:22:30,055 INFO L470 AbstractCegarLoop]: Abstraction has 12069 states and 15930 transitions. [2021-11-02 23:22:30,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) 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) [2021-11-02 23:22:30,057 INFO L276 IsEmpty]: Start isEmpty. Operand 12069 states and 15930 transitions. [2021-11-02 23:22:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 23:22:30,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:22:30,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:22:30,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:22:30,064 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 23:22:30,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:22:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1131535695, now seen corresponding path program 1 times [2021-11-02 23:22:30,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:22:30,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726045565] [2021-11-02 23:22:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:22:30,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:22:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:22:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:22:30,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:22:30,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726045565] [2021-11-02 23:22:30,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726045565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:22:30,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:22:30,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:22:30,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224585931] [2021-11-02 23:22:30,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:22:30,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:22:30,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:22:30,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:22:30,455 INFO L87 Difference]: Start difference. First operand 12069 states and 15930 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-02 23:22:32,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:23:13,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:23:15,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:23:33,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:23:42,209 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 [] [2021-11-02 23:24:32,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:24:32,607 INFO L93 Difference]: Finished difference Result 27180 states and 35898 transitions. [2021-11-02 23:24:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:24:32,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-02 23:24:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:24:32,662 INFO L225 Difference]: With dead ends: 27180 [2021-11-02 23:24:32,663 INFO L226 Difference]: Without dead ends: 15227 [2021-11-02 23:24:32,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:24:32,687 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4216 mSDsluCounter, 9333 mSDsCounter, 0 mSdLazyCounter, 22601 mSolverCounterSat, 18 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112920.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4216 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 141.23ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 22601 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120460.70ms IncrementalHoareTripleChecker+Time [2021-11-02 23:24:32,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4216 Valid, 0 Invalid, 22623 Unknown, 0 Unchecked, 141.23ms Time], IncrementalHoareTripleChecker [18 Valid, 22601 Invalid, 4 Unknown, 0 Unchecked, 120460.70ms Time] [2021-11-02 23:24:32,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15227 states. [2021-11-02 23:24:32,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15227 to 15211. [2021-11-02 23:24:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15211 states, 15206 states have (on average 1.3188872813363146) internal successors, (20055), 15210 states have internal predecessors, (20055), 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) [2021-11-02 23:24:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15211 states to 15211 states and 20055 transitions. [2021-11-02 23:24:33,034 INFO L78 Accepts]: Start accepts. Automaton has 15211 states and 20055 transitions. Word has length 96 [2021-11-02 23:24:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:24:33,036 INFO L470 AbstractCegarLoop]: Abstraction has 15211 states and 20055 transitions. [2021-11-02 23:24:33,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-02 23:24:33,036 INFO L276 IsEmpty]: Start isEmpty. Operand 15211 states and 20055 transitions. [2021-11-02 23:24:33,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 23:24:33,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:24:33,042 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:24:33,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:24:33,043 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 23:24:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:24:33,044 INFO L85 PathProgramCache]: Analyzing trace with hash -104060752, now seen corresponding path program 1 times [2021-11-02 23:24:33,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:24:33,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747702197] [2021-11-02 23:24:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:24:33,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:24:33,175 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:24:33,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187431049] [2021-11-02 23:24:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:24:33,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:24:33,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 23:24:33,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:24:33,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 23:24:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:24:34,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 4034 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:24:34,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:24:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 23:24:36,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 23:24:36,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:24:36,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747702197] [2021-11-02 23:24:36,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:24:36,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187431049] [2021-11-02 23:24:36,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187431049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:24:36,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:24:36,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:24:36,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556167371] [2021-11-02 23:24:36,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:24:36,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:24:36,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:24:36,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:24:36,212 INFO L87 Difference]: Start difference. First operand 15211 states and 20055 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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) [2021-11-02 23:24:38,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:25:02,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:25:24,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:25:43,990 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 [] [2021-11-02 23:26:29,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:26:29,884 INFO L93 Difference]: Finished difference Result 34619 states and 45630 transitions. [2021-11-02 23:26:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:26:29,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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 128 [2021-11-02 23:26:29,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:26:29,923 INFO L225 Difference]: With dead ends: 34619 [2021-11-02 23:26:29,923 INFO L226 Difference]: Without dead ends: 19524 [2021-11-02 23:26:29,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:26:29,953 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5250 mSDsluCounter, 9757 mSDsCounter, 0 mSdLazyCounter, 19662 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103290.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 99.42ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19662 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112099.75ms IncrementalHoareTripleChecker+Time [2021-11-02 23:26:29,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5250 Valid, 0 Invalid, 19666 Unknown, 0 Unchecked, 99.42ms Time], IncrementalHoareTripleChecker [0 Valid, 19662 Invalid, 4 Unknown, 0 Unchecked, 112099.75ms Time] [2021-11-02 23:26:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19524 states. [2021-11-02 23:26:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19524 to 19408. [2021-11-02 23:26:30,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19408 states, 19403 states have (on average 1.3163428335824356) internal successors, (25541), 19407 states have internal predecessors, (25541), 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) [2021-11-02 23:26:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19408 states to 19408 states and 25541 transitions. [2021-11-02 23:26:30,424 INFO L78 Accepts]: Start accepts. Automaton has 19408 states and 25541 transitions. Word has length 128 [2021-11-02 23:26:30,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:26:30,425 INFO L470 AbstractCegarLoop]: Abstraction has 19408 states and 25541 transitions. [2021-11-02 23:26:30,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 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) [2021-11-02 23:26:30,426 INFO L276 IsEmpty]: Start isEmpty. Operand 19408 states and 25541 transitions. [2021-11-02 23:26:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-02 23:26:30,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:26:30,430 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:26:30,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 23:26:30,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:26:30,648 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 23:26:30,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:26:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1068739855, now seen corresponding path program 1 times [2021-11-02 23:26:30,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:26:30,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203059847] [2021-11-02 23:26:30,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:26:30,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:26:30,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:26:30,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065294816] [2021-11-02 23:26:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:26:30,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:26:30,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 23:26:30,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:26:30,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 23:26:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:26:32,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 4035 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:26:32,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:26:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 23:26:33,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 23:26:33,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:26:33,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203059847] [2021-11-02 23:26:33,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:26:33,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065294816] [2021-11-02 23:26:33,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065294816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:26:33,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:26:33,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:26:33,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268472603] [2021-11-02 23:26:33,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:26:33,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:26:33,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:26:33,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:26:33,602 INFO L87 Difference]: Start difference. First operand 19408 states and 25541 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2021-11-02 23:26:35,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:27:01,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:27:21,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:27:44,168 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 [] [2021-11-02 23:28:31,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:28:31,916 INFO L93 Difference]: Finished difference Result 38816 states and 51115 transitions. [2021-11-02 23:28:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:28:31,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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 129 [2021-11-02 23:28:31,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:28:31,958 INFO L225 Difference]: With dead ends: 38816 [2021-11-02 23:28:31,959 INFO L226 Difference]: Without dead ends: 19524 [2021-11-02 23:28:31,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:28:31,999 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5248 mSDsluCounter, 9757 mSDsCounter, 0 mSdLazyCounter, 19662 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105900.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5248 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 103.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19662 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116810.54ms IncrementalHoareTripleChecker+Time [2021-11-02 23:28:32,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5248 Valid, 0 Invalid, 19666 Unknown, 0 Unchecked, 103.13ms Time], IncrementalHoareTripleChecker [0 Valid, 19662 Invalid, 4 Unknown, 0 Unchecked, 116810.54ms Time] [2021-11-02 23:28:32,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19524 states. [2021-11-02 23:28:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19524 to 19408. [2021-11-02 23:28:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19408 states, 19403 states have (on average 1.316291295160542) internal successors, (25540), 19407 states have internal predecessors, (25540), 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) [2021-11-02 23:28:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19408 states to 19408 states and 25540 transitions. [2021-11-02 23:28:32,440 INFO L78 Accepts]: Start accepts. Automaton has 19408 states and 25540 transitions. Word has length 129 [2021-11-02 23:28:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:28:32,442 INFO L470 AbstractCegarLoop]: Abstraction has 19408 states and 25540 transitions. [2021-11-02 23:28:32,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 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) [2021-11-02 23:28:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 19408 states and 25540 transitions. [2021-11-02 23:28:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-02 23:28:32,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:28:32,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:28:32,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 23:28:32,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-02 23:28:32,672 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 23:28:32,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:28:32,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1228998037, now seen corresponding path program 1 times [2021-11-02 23:28:32,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:28:32,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906564934] [2021-11-02 23:28:32,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:28:32,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:28:32,952 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:28:32,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327935777] [2021-11-02 23:28:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:28:32,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:28:32,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 23:28:32,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:28:32,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 23:28:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:28:34,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 4036 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:28:34,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:28:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 23:28:35,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 23:28:35,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:28:35,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906564934] [2021-11-02 23:28:35,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:28:35,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327935777] [2021-11-02 23:28:35,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327935777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:28:35,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:28:35,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:28:35,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806859136] [2021-11-02 23:28:35,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:28:35,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:28:35,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:28:35,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:28:35,743 INFO L87 Difference]: Start difference. First operand 19408 states and 25540 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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) [2021-11-02 23:28:37,818 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 [] [2021-11-02 23:29:04,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:29:47,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:29:49,267 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 [] [2021-11-02 23:30:39,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:30:39,344 INFO L93 Difference]: Finished difference Result 38816 states and 51113 transitions. [2021-11-02 23:30:39,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:30:39,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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 130 [2021-11-02 23:30:39,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:30:39,375 INFO L225 Difference]: With dead ends: 38816 [2021-11-02 23:30:39,375 INFO L226 Difference]: Without dead ends: 19524 [2021-11-02 23:30:39,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:30:39,407 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5246 mSDsluCounter, 9758 mSDsCounter, 0 mSdLazyCounter, 19664 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108835.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5246 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 102.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19664 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122096.56ms IncrementalHoareTripleChecker+Time [2021-11-02 23:30:39,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5246 Valid, 0 Invalid, 19667 Unknown, 0 Unchecked, 102.46ms Time], IncrementalHoareTripleChecker [0 Valid, 19664 Invalid, 3 Unknown, 0 Unchecked, 122096.56ms Time] [2021-11-02 23:30:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19524 states. [2021-11-02 23:30:39,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19524 to 19408. [2021-11-02 23:30:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19408 states, 19403 states have (on average 1.3162397567386486) internal successors, (25539), 19407 states have internal predecessors, (25539), 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) [2021-11-02 23:30:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19408 states to 19408 states and 25539 transitions. [2021-11-02 23:30:39,776 INFO L78 Accepts]: Start accepts. Automaton has 19408 states and 25539 transitions. Word has length 130 [2021-11-02 23:30:39,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:30:39,776 INFO L470 AbstractCegarLoop]: Abstraction has 19408 states and 25539 transitions. [2021-11-02 23:30:39,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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) [2021-11-02 23:30:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 19408 states and 25539 transitions. [2021-11-02 23:30:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-02 23:30:39,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:30:39,787 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:30:39,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 23:30:40,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:30:40,012 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 23:30:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:30:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash 555720298, now seen corresponding path program 1 times [2021-11-02 23:30:40,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:30:40,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146588038] [2021-11-02 23:30:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:30:40,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:30:40,137 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:30:40,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434807830] [2021-11-02 23:30:40,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:30:40,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:30:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 23:30:40,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:30:40,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 23:30:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:30:41,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 4037 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:30:41,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:30:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 23:30:42,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 23:30:42,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:30:42,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146588038] [2021-11-02 23:30:42,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:30:42,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434807830] [2021-11-02 23:30:42,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434807830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:30:42,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:30:42,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:30:42,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111533968] [2021-11-02 23:30:42,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:30:42,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:30:42,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:30:42,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:30:42,917 INFO L87 Difference]: Start difference. First operand 19408 states and 25539 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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) [2021-11-02 23:30:44,983 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 [] [2021-11-02 23:31:13,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:31:31,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:31:54,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:32:28,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:33:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:33:03,819 INFO L93 Difference]: Finished difference Result 53793 states and 70871 transitions. [2021-11-02 23:33:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:33:03,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 131 [2021-11-02 23:33:03,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:33:03,873 INFO L225 Difference]: With dead ends: 53793 [2021-11-02 23:33:03,873 INFO L226 Difference]: Without dead ends: 34501 [2021-11-02 23:33:03,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:33:03,912 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9766 mSDsluCounter, 9758 mSDsCounter, 0 mSdLazyCounter, 19664 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120580.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9766 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 106.26ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19664 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138963.63ms IncrementalHoareTripleChecker+Time [2021-11-02 23:33:03,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9766 Valid, 0 Invalid, 19671 Unknown, 0 Unchecked, 106.26ms Time], IncrementalHoareTripleChecker [4 Valid, 19664 Invalid, 3 Unknown, 0 Unchecked, 138963.63ms Time] [2021-11-02 23:33:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34501 states. [2021-11-02 23:33:04,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34501 to 34489. [2021-11-02 23:33:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34489 states, 34484 states have (on average 1.3178285581719058) internal successors, (45444), 34488 states have internal predecessors, (45444), 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) [2021-11-02 23:33:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34489 states to 34489 states and 45444 transitions. [2021-11-02 23:33:04,671 INFO L78 Accepts]: Start accepts. Automaton has 34489 states and 45444 transitions. Word has length 131 [2021-11-02 23:33:04,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:33:04,672 INFO L470 AbstractCegarLoop]: Abstraction has 34489 states and 45444 transitions. [2021-11-02 23:33:04,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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) [2021-11-02 23:33:04,672 INFO L276 IsEmpty]: Start isEmpty. Operand 34489 states and 45444 transitions. [2021-11-02 23:33:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-02 23:33:04,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 23:33:04,677 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:33:04,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 23:33:04,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:33:04,878 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 23:33:04,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:33:04,879 INFO L85 PathProgramCache]: Analyzing trace with hash 47562790, now seen corresponding path program 1 times [2021-11-02 23:33:04,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:33:04,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487704105] [2021-11-02 23:33:04,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:33:04,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:33:04,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 23:33:04,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22499890] [2021-11-02 23:33:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:33:04,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:33:04,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 23:33:04,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:33:04,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 23:33:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:33:06,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 4038 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 23:33:06,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:33:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 23:33:07,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 23:33:07,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:33:07,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487704105] [2021-11-02 23:33:07,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 23:33:07,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22499890] [2021-11-02 23:33:07,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22499890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:33:07,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:33:07,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:33:07,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175244677] [2021-11-02 23:33:07,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:33:07,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:33:07,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:33:07,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:33:07,958 INFO L87 Difference]: Start difference. First operand 34489 states and 45444 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:33:10,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:33:21,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 23:33:42,140 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