./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--r8a66597-hcd.ko-entry_point.cil.out.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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--r8a66597-hcd.ko-entry_point.cil.out.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 6785537a032cb4855d5467e9b639eb667ad8ad30124f23951db0f7bcb4fb8bfb --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 21:42:34,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 21:42:34,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 21:42:34,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 21:42:34,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 21:42:34,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 21:42:34,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 21:42:34,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 21:42:34,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 21:42:34,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 21:42:34,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 21:42:34,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 21:42:34,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 21:42:34,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 21:42:34,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 21:42:34,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 21:42:34,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 21:42:34,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 21:42:34,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 21:42:34,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 21:42:34,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 21:42:34,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 21:42:34,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 21:42:34,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 21:42:34,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 21:42:34,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 21:42:34,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 21:42:34,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 21:42:34,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 21:42:34,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 21:42:34,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 21:42:34,738 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 21:42:34,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 21:42:34,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 21:42:34,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 21:42:34,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 21:42:34,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 21:42:34,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 21:42:34,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 21:42:34,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 21:42:34,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 21:42:34,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 21:42:34,768 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 21:42:34,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 21:42:34,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 21:42:34,768 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 21:42:34,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 21:42:34,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 21:42:34,770 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 21:42:34,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 21:42:34,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 21:42:34,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 21:42:34,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 21:42:34,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 21:42:34,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 21:42:34,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 21:42:34,772 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 21:42:34,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 21:42:34,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 21:42:34,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 21:42:34,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 21:42:34,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:42:34,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 21:42:34,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 21:42:34,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 21:42:34,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 21:42:34,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 21:42:34,773 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 21:42:34,773 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 21:42:34,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 21:42:34,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 21:42:34,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6785537a032cb4855d5467e9b639eb667ad8ad30124f23951db0f7bcb4fb8bfb [2021-11-02 21:42:34,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 21:42:34,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 21:42:34,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 21:42:34,980 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 21:42:34,980 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 21:42:34,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--r8a66597-hcd.ko-entry_point.cil.out.i [2021-11-02 21:42:35,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d41897f95/5e7ef86156f14bc591e2a769248b4594/FLAG3068cfaef [2021-11-02 21:42:35,567 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 21:42:35,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--r8a66597-hcd.ko-entry_point.cil.out.i [2021-11-02 21:42:35,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d41897f95/5e7ef86156f14bc591e2a769248b4594/FLAG3068cfaef [2021-11-02 21:42:35,766 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d41897f95/5e7ef86156f14bc591e2a769248b4594 [2021-11-02 21:42:35,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 21:42:35,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 21:42:35,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 21:42:35,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 21:42:35,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 21:42:35,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:42:35" (1/1) ... [2021-11-02 21:42:35,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f74d56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:35, skipping insertion in model container [2021-11-02 21:42:35,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:42:35" (1/1) ... [2021-11-02 21:42:35,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 21:42:35,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 21:42:37,131 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--r8a66597-hcd.ko-entry_point.cil.out.i[252187,252200] [2021-11-02 21:42:37,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:42:37,248 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 21:42:37,495 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--r8a66597-hcd.ko-entry_point.cil.out.i[252187,252200] [2021-11-02 21:42:37,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 21:42:37,572 INFO L208 MainTranslator]: Completed translation [2021-11-02 21:42:37,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37 WrapperNode [2021-11-02 21:42:37,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 21:42:37,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 21:42:37,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 21:42:37,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 21:42:37,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37" (1/1) ... [2021-11-02 21:42:37,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37" (1/1) ... [2021-11-02 21:42:38,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 21:42:38,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 21:42:38,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 21:42:38,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 21:42:38,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37" (1/1) ... [2021-11-02 21:42:38,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37" (1/1) ... [2021-11-02 21:42:39,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37" (1/1) ... [2021-11-02 21:42:39,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37" (1/1) ... [2021-11-02 21:42:39,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37" (1/1) ... [2021-11-02 21:42:39,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37" (1/1) ... [2021-11-02 21:42:39,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37" (1/1) ... [2021-11-02 21:42:39,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 21:42:39,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 21:42:39,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 21:42:39,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 21:42:39,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37" (1/1) ... [2021-11-02 21:42:39,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 21:42:40,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:42:40,029 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 21:42:40,036 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 21:42:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure finish_request [2021-11-02 21:42:40,071 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_request [2021-11-02 21:42:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure start_transfer [2021-11-02 21:42:40,071 INFO L138 BoogieDeclarations]: Found implementation of procedure start_transfer [2021-11-02 21:42:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 21:42:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 21:42:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 21:42:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 21:42:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 21:42:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 21:42:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure collect_usb_address_map [2021-11-02 21:42:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure collect_usb_address_map [2021-11-02 21:42:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 21:42:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure packet_write [2021-11-02 21:42:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure packet_write [2021-11-02 21:42:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 21:42:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 21:42:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 21:42:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 21:42:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 21:42:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_packet_write [2021-11-02 21:42:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_packet_write [2021-11-02 21:42:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 21:42:40,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 21:42:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 21:42:44,700 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 21:42:44,700 INFO L299 CfgBuilder]: Removed 10114 assume(true) statements. [2021-11-02 21:42:44,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:42:44 BoogieIcfgContainer [2021-11-02 21:42:44,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 21:42:44,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 21:42:44,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 21:42:44,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 21:42:44,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:42:35" (1/3) ... [2021-11-02 21:42:44,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35215e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:42:44, skipping insertion in model container [2021-11-02 21:42:44,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:42:37" (2/3) ... [2021-11-02 21:42:44,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35215e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:42:44, skipping insertion in model container [2021-11-02 21:42:44,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:42:44" (3/3) ... [2021-11-02 21:42:44,714 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--r8a66597-hcd.ko-entry_point.cil.out.i [2021-11-02 21:42:44,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 21:42:44,718 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-02 21:42:44,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 21:42:44,771 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 21:42:44,771 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-02 21:42:44,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 7201 states, 7137 states have (on average 1.3097940311055065) internal successors, (9348), 7159 states have internal predecessors, (9348), 55 states have call successors, (55), 5 states have call predecessors, (55), 5 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) [2021-11-02 21:42:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-02 21:42:44,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:42:45,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:42:45,000 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:42:45,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:42:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1947618161, now seen corresponding path program 1 times [2021-11-02 21:42:45,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:42:45,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132487814] [2021-11-02 21:42:45,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:42:45,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:42:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:42:45,374 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 21:42:45,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:42:45,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132487814] [2021-11-02 21:42:45,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132487814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:42:45,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:42:45,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:42:45,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110282296] [2021-11-02 21:42:45,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 21:42:45,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:42:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 21:42:45,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:42:45,419 INFO L87 Difference]: Start difference. First operand has 7201 states, 7137 states have (on average 1.3097940311055065) internal successors, (9348), 7159 states have internal predecessors, (9348), 55 states have call successors, (55), 5 states have call predecessors, (55), 5 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:56,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:42:56,047 INFO L93 Difference]: Finished difference Result 14398 states and 18966 transitions. [2021-11-02 21:42:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 21:42:56,058 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-02 21:42:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:42:56,114 INFO L225 Difference]: With dead ends: 14398 [2021-11-02 21:42:56,114 INFO L226 Difference]: Without dead ends: 7177 [2021-11-02 21:42:56,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 21:42:56,155 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9294 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8390.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 9294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10123.24ms IncrementalHoareTripleChecker+Time [2021-11-02 21:42:56,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 9294 Unknown, 0 Unchecked, 15.78ms Time], IncrementalHoareTripleChecker [0 Valid, 9294 Invalid, 0 Unknown, 0 Unchecked, 10123.24ms Time] [2021-11-02 21:42:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7177 states. [2021-11-02 21:42:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7177 to 7177. [2021-11-02 21:42:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7177 states, 7114 states have (on average 1.3030643800955861) internal successors, (9270), 7135 states have internal predecessors, (9270), 55 states have call successors, (55), 5 states have call predecessors, (55), 5 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) [2021-11-02 21:42:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7177 states to 7177 states and 9380 transitions. [2021-11-02 21:42:56,414 INFO L78 Accepts]: Start accepts. Automaton has 7177 states and 9380 transitions. Word has length 48 [2021-11-02 21:42:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:42:56,415 INFO L470 AbstractCegarLoop]: Abstraction has 7177 states and 9380 transitions. [2021-11-02 21:42:56,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:42:56,415 INFO L276 IsEmpty]: Start isEmpty. Operand 7177 states and 9380 transitions. [2021-11-02 21:42:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-02 21:42:56,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:42:56,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:42:56,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 21:42:56,421 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:42:56,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:42:56,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1030216075, now seen corresponding path program 1 times [2021-11-02 21:42:56,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:42:56,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480970312] [2021-11-02 21:42:56,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:42:56,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:42:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:42:56,647 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 21:42:56,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:42:56,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480970312] [2021-11-02 21:42:56,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480970312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:42:56,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:42:56,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:42:56,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164157157] [2021-11-02 21:42:56,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:42:56,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:42:56,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:42:56,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:42:56,652 INFO L87 Difference]: Start difference. First operand 7177 states and 9380 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:07,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:43:08,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:43:11,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:43:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:43:15,782 INFO L93 Difference]: Finished difference Result 14342 states and 18751 transitions. [2021-11-02 21:43:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:43:15,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-02 21:43:15,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:43:15,812 INFO L225 Difference]: With dead ends: 14342 [2021-11-02 21:43:15,812 INFO L226 Difference]: Without dead ends: 7181 [2021-11-02 21:43:15,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:43:15,841 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 9347 mSDsCounter, 0 mSdLazyCounter, 18535 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16628.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 18542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.65ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18535 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18713.11ms IncrementalHoareTripleChecker+Time [2021-11-02 21:43:15,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 18542 Unknown, 0 Unchecked, 47.65ms Time], IncrementalHoareTripleChecker [6 Valid, 18535 Invalid, 1 Unknown, 0 Unchecked, 18713.11ms Time] [2021-11-02 21:43:15,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7181 states. [2021-11-02 21:43:15,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7181 to 7181. [2021-11-02 21:43:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7181 states, 7118 states have (on average 1.3028940713683619) internal successors, (9274), 7139 states have internal predecessors, (9274), 55 states have call successors, (55), 5 states have call predecessors, (55), 5 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) [2021-11-02 21:43:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7181 states to 7181 states and 9384 transitions. [2021-11-02 21:43:16,024 INFO L78 Accepts]: Start accepts. Automaton has 7181 states and 9384 transitions. Word has length 48 [2021-11-02 21:43:16,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:43:16,024 INFO L470 AbstractCegarLoop]: Abstraction has 7181 states and 9384 transitions. [2021-11-02 21:43:16,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:43:16,029 INFO L276 IsEmpty]: Start isEmpty. Operand 7181 states and 9384 transitions. [2021-11-02 21:43:16,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 21:43:16,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:43:16,031 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] [2021-11-02 21:43:16,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 21:43:16,031 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:43:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:43:16,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1254921145, now seen corresponding path program 1 times [2021-11-02 21:43:16,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:43:16,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682380409] [2021-11-02 21:43:16,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:43:16,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:43:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:43:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 21:43:16,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:43:16,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682380409] [2021-11-02 21:43:16,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682380409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:43:16,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:43:16,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:43:16,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258586085] [2021-11-02 21:43:16,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:43:16,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:43:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:43:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:43:16,233 INFO L87 Difference]: Start difference. First operand 7181 states and 9384 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 21:43:27,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:43:29,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:43:31,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:43:33,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:43:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:43:37,884 INFO L93 Difference]: Finished difference Result 14340 states and 18745 transitions. [2021-11-02 21:43:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:43:37,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-02 21:43:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:43:37,906 INFO L225 Difference]: With dead ends: 14340 [2021-11-02 21:43:37,906 INFO L226 Difference]: Without dead ends: 7183 [2021-11-02 21:43:37,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:43:37,931 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 9347 mSDsCounter, 0 mSdLazyCounter, 18537 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18939.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 18540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.04ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21339.14ms IncrementalHoareTripleChecker+Time [2021-11-02 21:43:37,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 18540 Unknown, 0 Unchecked, 28.04ms Time], IncrementalHoareTripleChecker [2 Valid, 18537 Invalid, 1 Unknown, 0 Unchecked, 21339.14ms Time] [2021-11-02 21:43:37,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7183 states. [2021-11-02 21:43:38,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7183 to 7183. [2021-11-02 21:43:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7183 states, 7120 states have (on average 1.302808988764045) internal successors, (9276), 7141 states have internal predecessors, (9276), 55 states have call successors, (55), 5 states have call predecessors, (55), 5 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) [2021-11-02 21:43:38,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7183 states to 7183 states and 9386 transitions. [2021-11-02 21:43:38,072 INFO L78 Accepts]: Start accepts. Automaton has 7183 states and 9386 transitions. Word has length 52 [2021-11-02 21:43:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:43:38,072 INFO L470 AbstractCegarLoop]: Abstraction has 7183 states and 9386 transitions. [2021-11-02 21:43:38,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 21:43:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 7183 states and 9386 transitions. [2021-11-02 21:43:38,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 21:43:38,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:43:38,074 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] [2021-11-02 21:43:38,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 21:43:38,075 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:43:38,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:43:38,075 INFO L85 PathProgramCache]: Analyzing trace with hash 268845467, now seen corresponding path program 1 times [2021-11-02 21:43:38,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:43:38,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783406062] [2021-11-02 21:43:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:43:38,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:43:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:43:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 21:43:38,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:43:38,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783406062] [2021-11-02 21:43:38,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783406062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:43:38,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:43:38,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:43:38,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491439813] [2021-11-02 21:43:38,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:43:38,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:43:38,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:43:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:43:38,225 INFO L87 Difference]: Start difference. First operand 7183 states and 9386 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 21:43:51,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:43:59,214 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:44:05,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:44:05,233 INFO L93 Difference]: Finished difference Result 21432 states and 28029 transitions. [2021-11-02 21:44:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:44:05,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2021-11-02 21:44:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:44:05,287 INFO L225 Difference]: With dead ends: 21432 [2021-11-02 21:44:05,288 INFO L226 Difference]: Without dead ends: 14291 [2021-11-02 21:44:05,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:44:05,305 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 9303 mSDsluCounter, 9358 mSDsCounter, 0 mSdLazyCounter, 18527 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22587.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9303 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 18530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.96ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26468.38ms IncrementalHoareTripleChecker+Time [2021-11-02 21:44:05,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9303 Valid, 275 Invalid, 18530 Unknown, 0 Unchecked, 38.96ms Time], IncrementalHoareTripleChecker [3 Valid, 18527 Invalid, 0 Unknown, 0 Unchecked, 26468.38ms Time] [2021-11-02 21:44:05,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14291 states. [2021-11-02 21:44:05,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14291 to 14291. [2021-11-02 21:44:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14291 states, 14168 states have (on average 1.3035008469791078) internal successors, (18468), 14208 states have internal predecessors, (18468), 110 states have call successors, (110), 10 states have call predecessors, (110), 10 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2021-11-02 21:44:05,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14291 states to 14291 states and 18688 transitions. [2021-11-02 21:44:05,576 INFO L78 Accepts]: Start accepts. Automaton has 14291 states and 18688 transitions. Word has length 54 [2021-11-02 21:44:05,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:44:05,576 INFO L470 AbstractCegarLoop]: Abstraction has 14291 states and 18688 transitions. [2021-11-02 21:44:05,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 21:44:05,576 INFO L276 IsEmpty]: Start isEmpty. Operand 14291 states and 18688 transitions. [2021-11-02 21:44:05,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 21:44:05,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:44:05,580 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] [2021-11-02 21:44:05,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 21:44:05,581 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:44:05,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:44:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1899612742, now seen corresponding path program 1 times [2021-11-02 21:44:05,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:44:05,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764185523] [2021-11-02 21:44:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:44:05,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:44:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:44:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 21:44:05,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:44:05,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764185523] [2021-11-02 21:44:05,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764185523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:44:05,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:44:05,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:44:05,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373811764] [2021-11-02 21:44:05,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:44:05,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:44:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:44:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:44:05,739 INFO L87 Difference]: Start difference. First operand 14291 states and 18688 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:17,721 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 21:44:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:44:34,714 INFO L93 Difference]: Finished difference Result 28432 states and 37185 transitions. [2021-11-02 21:44:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:44:34,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-02 21:44:34,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:44:34,812 INFO L225 Difference]: With dead ends: 28432 [2021-11-02 21:44:34,812 INFO L226 Difference]: Without dead ends: 28430 [2021-11-02 21:44:34,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:44:34,831 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 9247 mSDsluCounter, 9330 mSDsCounter, 0 mSdLazyCounter, 18494 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23545.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9247 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 18496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.83ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18494 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28129.20ms IncrementalHoareTripleChecker+Time [2021-11-02 21:44:34,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9247 Valid, 275 Invalid, 18496 Unknown, 0 Unchecked, 36.83ms Time], IncrementalHoareTripleChecker [1 Valid, 18494 Invalid, 1 Unknown, 0 Unchecked, 28129.20ms Time] [2021-11-02 21:44:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28430 states. [2021-11-02 21:44:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28430 to 28268. [2021-11-02 21:44:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28268 states, 28025 states have (on average 1.3025156110615521) internal successors, (36503), 28103 states have internal predecessors, (36503), 220 states have call successors, (220), 20 states have call predecessors, (220), 20 states have return successors, (220), 212 states have call predecessors, (220), 220 states have call successors, (220) [2021-11-02 21:44:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28268 states to 28268 states and 36943 transitions. [2021-11-02 21:44:35,440 INFO L78 Accepts]: Start accepts. Automaton has 28268 states and 36943 transitions. Word has length 63 [2021-11-02 21:44:35,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:44:35,441 INFO L470 AbstractCegarLoop]: Abstraction has 28268 states and 36943 transitions. [2021-11-02 21:44:35,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:44:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 28268 states and 36943 transitions. [2021-11-02 21:44:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 21:44:35,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:44:35,444 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] [2021-11-02 21:44:35,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 21:44:35,444 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:44:35,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:44:35,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1241518546, now seen corresponding path program 1 times [2021-11-02 21:44:35,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:44:35,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785083898] [2021-11-02 21:44:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:44:35,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:44:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:44:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 21:44:35,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:44:35,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785083898] [2021-11-02 21:44:35,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785083898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:44:35,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:44:35,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:44:35,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121004675] [2021-11-02 21:44:35,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:44:35,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:44:35,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:44:35,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:44:35,566 INFO L87 Difference]: Start difference. First operand 28268 states and 36943 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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 21:44:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:44:50,554 INFO L93 Difference]: Finished difference Result 28268 states and 36943 transitions. [2021-11-02 21:44:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:44:50,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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 64 [2021-11-02 21:44:50,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:44:50,622 INFO L225 Difference]: With dead ends: 28268 [2021-11-02 21:44:50,623 INFO L226 Difference]: Without dead ends: 28266 [2021-11-02 21:44:50,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:44:50,640 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 9316 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12119.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9316 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 9268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14497.46ms IncrementalHoareTripleChecker+Time [2021-11-02 21:44:50,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9316 Valid, 110 Invalid, 9268 Unknown, 0 Unchecked, 14.19ms Time], IncrementalHoareTripleChecker [0 Valid, 9268 Invalid, 0 Unknown, 0 Unchecked, 14497.46ms Time] [2021-11-02 21:44:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28266 states. [2021-11-02 21:44:51,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28266 to 28266. [2021-11-02 21:44:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28266 states, 28024 states have (on average 1.3024907222380817) internal successors, (36501), 28101 states have internal predecessors, (36501), 220 states have call successors, (220), 20 states have call predecessors, (220), 20 states have return successors, (220), 212 states have call predecessors, (220), 220 states have call successors, (220) [2021-11-02 21:44:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28266 states to 28266 states and 36941 transitions. [2021-11-02 21:44:51,107 INFO L78 Accepts]: Start accepts. Automaton has 28266 states and 36941 transitions. Word has length 64 [2021-11-02 21:44:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:44:51,107 INFO L470 AbstractCegarLoop]: Abstraction has 28266 states and 36941 transitions. [2021-11-02 21:44:51,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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 21:44:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 28266 states and 36941 transitions. [2021-11-02 21:44:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 21:44:51,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:44:51,110 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] [2021-11-02 21:44:51,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 21:44:51,110 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:44:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:44:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash 167659344, now seen corresponding path program 1 times [2021-11-02 21:44:51,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:44:51,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916151587] [2021-11-02 21:44:51,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:44:51,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:44:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:44:51,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 21:44:51,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:44:51,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916151587] [2021-11-02 21:44:51,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916151587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:44:51,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:44:51,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 21:44:51,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818741455] [2021-11-02 21:44:51,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:44:51,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:44:51,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:44:51,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:44:51,218 INFO L87 Difference]: Start difference. First operand 28266 states and 36941 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:03,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:45:05,285 WARN L515 Checker$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 21:45:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:45:25,393 INFO L93 Difference]: Finished difference Result 28432 states and 37184 transitions. [2021-11-02 21:45:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:45:25,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 21:45:25,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:45:25,467 INFO L225 Difference]: With dead ends: 28432 [2021-11-02 21:45:25,467 INFO L226 Difference]: Without dead ends: 28425 [2021-11-02 21:45:25,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:45:25,486 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 9241 mSDsluCounter, 9334 mSDsCounter, 0 mSdLazyCounter, 18496 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27932.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9241 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 18497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18496 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33315.39ms IncrementalHoareTripleChecker+Time [2021-11-02 21:45:25,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9241 Valid, 275 Invalid, 18497 Unknown, 0 Unchecked, 37.43ms Time], IncrementalHoareTripleChecker [0 Valid, 18496 Invalid, 1 Unknown, 0 Unchecked, 33315.39ms Time] [2021-11-02 21:45:25,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28425 states. [2021-11-02 21:45:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28425 to 28263. [2021-11-02 21:45:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28263 states, 28021 states have (on average 1.3024160451090254) internal successors, (36495), 28098 states have internal predecessors, (36495), 220 states have call successors, (220), 20 states have call predecessors, (220), 20 states have return successors, (220), 212 states have call predecessors, (220), 220 states have call successors, (220) [2021-11-02 21:45:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28263 states to 28263 states and 36935 transitions. [2021-11-02 21:45:26,035 INFO L78 Accepts]: Start accepts. Automaton has 28263 states and 36935 transitions. Word has length 65 [2021-11-02 21:45:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:45:26,035 INFO L470 AbstractCegarLoop]: Abstraction has 28263 states and 36935 transitions. [2021-11-02 21:45:26,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:45:26,035 INFO L276 IsEmpty]: Start isEmpty. Operand 28263 states and 36935 transitions. [2021-11-02 21:45:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-02 21:45:26,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:45:26,088 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:45:26,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 21:45:26,088 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:45:26,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:45:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1676648281, now seen corresponding path program 1 times [2021-11-02 21:45:26,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:45:26,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70012567] [2021-11-02 21:45:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:45:26,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:45:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:45:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 21:45:26,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:45:26,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70012567] [2021-11-02 21:45:26,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70012567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:45:26,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:45:26,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:45:26,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016583233] [2021-11-02 21:45:26,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:45:26,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:45:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:45:26,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:45:26,194 INFO L87 Difference]: Start difference. First operand 28263 states and 36935 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 21:45:57,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:45:57,504 INFO L93 Difference]: Finished difference Result 68643 states and 89636 transitions. [2021-11-02 21:45:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:45:57,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 173 [2021-11-02 21:45:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:45:57,599 INFO L225 Difference]: With dead ends: 68643 [2021-11-02 21:45:57,599 INFO L226 Difference]: Without dead ends: 40422 [2021-11-02 21:45:57,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:45:57,676 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 4003 mSDsluCounter, 9273 mSDsCounter, 0 mSdLazyCounter, 18592 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24611.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4003 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 18594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.57ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30148.21ms IncrementalHoareTripleChecker+Time [2021-11-02 21:45:57,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4003 Valid, 233 Invalid, 18594 Unknown, 0 Unchecked, 34.57ms Time], IncrementalHoareTripleChecker [2 Valid, 18592 Invalid, 0 Unknown, 0 Unchecked, 30148.21ms Time] [2021-11-02 21:45:57,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40422 states. [2021-11-02 21:45:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40422 to 40403. [2021-11-02 21:45:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40403 states, 40097 states have (on average 1.3016185749557323) internal successors, (52191), 40182 states have internal predecessors, (52191), 268 states have call successors, (268), 36 states have call predecessors, (268), 36 states have return successors, (268), 260 states have call predecessors, (268), 268 states have call successors, (268) [2021-11-02 21:45:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40403 states to 40403 states and 52727 transitions. [2021-11-02 21:45:58,407 INFO L78 Accepts]: Start accepts. Automaton has 40403 states and 52727 transitions. Word has length 173 [2021-11-02 21:45:58,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:45:58,407 INFO L470 AbstractCegarLoop]: Abstraction has 40403 states and 52727 transitions. [2021-11-02 21:45:58,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 21:45:58,408 INFO L276 IsEmpty]: Start isEmpty. Operand 40403 states and 52727 transitions. [2021-11-02 21:45:58,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-02 21:45:58,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:45:58,470 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:45:58,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 21:45:58,471 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:45:58,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:45:58,471 INFO L85 PathProgramCache]: Analyzing trace with hash -686208764, now seen corresponding path program 1 times [2021-11-02 21:45:58,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:45:58,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990459019] [2021-11-02 21:45:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:45:58,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:45:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:45:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 21:45:58,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:45:58,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990459019] [2021-11-02 21:45:58,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990459019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:45:58,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:45:58,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:45:58,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610198276] [2021-11-02 21:45:58,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:45:58,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:45:58,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:45:58,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:45:58,623 INFO L87 Difference]: Start difference. First operand 40403 states and 52727 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 21:46:28,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:46:34,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:46:34,110 INFO L93 Difference]: Finished difference Result 93187 states and 121640 transitions. [2021-11-02 21:46:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:46:34,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 196 [2021-11-02 21:46:34,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:46:34,244 INFO L225 Difference]: With dead ends: 93187 [2021-11-02 21:46:34,244 INFO L226 Difference]: Without dead ends: 52826 [2021-11-02 21:46:34,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:46:34,351 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 6693 mSDsluCounter, 6652 mSDsCounter, 0 mSdLazyCounter, 19751 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27558.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6693 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 19791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.39ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 19751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34052.69ms IncrementalHoareTripleChecker+Time [2021-11-02 21:46:34,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6693 Valid, 202 Invalid, 19791 Unknown, 0 Unchecked, 32.39ms Time], IncrementalHoareTripleChecker [40 Valid, 19751 Invalid, 0 Unknown, 0 Unchecked, 34052.69ms Time] [2021-11-02 21:46:34,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52826 states. [2021-11-02 21:46:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52826 to 52807. [2021-11-02 21:46:35,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52807 states, 52429 states have (on average 1.301169200251769) internal successors, (68219), 52526 states have internal predecessors, (68219), 320 states have call successors, (320), 56 states have call predecessors, (320), 56 states have return successors, (320), 312 states have call predecessors, (320), 320 states have call successors, (320) [2021-11-02 21:46:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52807 states to 52807 states and 68859 transitions. [2021-11-02 21:46:35,812 INFO L78 Accepts]: Start accepts. Automaton has 52807 states and 68859 transitions. Word has length 196 [2021-11-02 21:46:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:46:35,813 INFO L470 AbstractCegarLoop]: Abstraction has 52807 states and 68859 transitions. [2021-11-02 21:46:35,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 21:46:35,813 INFO L276 IsEmpty]: Start isEmpty. Operand 52807 states and 68859 transitions. [2021-11-02 21:46:35,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-02 21:46:35,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:46:35,940 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:46:35,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 21:46:35,940 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:46:35,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:46:35,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1652597247, now seen corresponding path program 1 times [2021-11-02 21:46:35,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:46:35,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798723762] [2021-11-02 21:46:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:46:35,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:46:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:46:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 21:46:36,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:46:36,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798723762] [2021-11-02 21:46:36,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798723762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:46:36,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:46:36,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 21:46:36,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270312431] [2021-11-02 21:46:36,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 21:46:36,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:46:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 21:46:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:46:36,111 INFO L87 Difference]: Start difference. First operand 52807 states and 68859 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 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 21:47:04,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:47:05,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:47:21,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:47:28,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:47:37,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:47:37,349 INFO L93 Difference]: Finished difference Result 145017 states and 190365 transitions. [2021-11-02 21:47:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 21:47:37,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 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 220 [2021-11-02 21:47:37,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:47:37,575 INFO L225 Difference]: With dead ends: 145017 [2021-11-02 21:47:37,575 INFO L226 Difference]: Without dead ends: 92252 [2021-11-02 21:47:37,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:47:37,709 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 7921 mSDsluCounter, 26337 mSDsCounter, 0 mSdLazyCounter, 42837 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49762.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7971 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 42859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.79ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 42837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59043.42ms IncrementalHoareTripleChecker+Time [2021-11-02 21:47:37,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7971 Valid, 580 Invalid, 42859 Unknown, 0 Unchecked, 72.79ms Time], IncrementalHoareTripleChecker [21 Valid, 42837 Invalid, 1 Unknown, 0 Unchecked, 59043.42ms Time] [2021-11-02 21:47:37,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92252 states. [2021-11-02 21:47:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92252 to 53047. [2021-11-02 21:47:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53047 states, 52669 states have (on average 1.2997968444436006) internal successors, (68459), 52766 states have internal predecessors, (68459), 320 states have call successors, (320), 56 states have call predecessors, (320), 56 states have return successors, (320), 312 states have call predecessors, (320), 320 states have call successors, (320) [2021-11-02 21:47:39,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53047 states to 53047 states and 69099 transitions. [2021-11-02 21:47:39,550 INFO L78 Accepts]: Start accepts. Automaton has 53047 states and 69099 transitions. Word has length 220 [2021-11-02 21:47:39,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:47:39,550 INFO L470 AbstractCegarLoop]: Abstraction has 53047 states and 69099 transitions. [2021-11-02 21:47:39,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 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 21:47:39,551 INFO L276 IsEmpty]: Start isEmpty. Operand 53047 states and 69099 transitions. [2021-11-02 21:47:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-02 21:47:39,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:47:39,630 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:47:39,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 21:47:39,631 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:47:39,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:47:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash -890722468, now seen corresponding path program 1 times [2021-11-02 21:47:39,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:47:39,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073890286] [2021-11-02 21:47:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:47:39,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:47:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:47:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 21:47:39,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:47:39,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073890286] [2021-11-02 21:47:39,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073890286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:47:39,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:47:39,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 21:47:39,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217823781] [2021-11-02 21:47:39,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 21:47:39,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:47:39,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 21:47:39,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:47:39,776 INFO L87 Difference]: Start difference. First operand 53047 states and 69099 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 21:48:13,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:48:30,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:48:31,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:48:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:48:45,747 INFO L93 Difference]: Finished difference Result 144217 states and 189325 transitions. [2021-11-02 21:48:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 21:48:45,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 223 [2021-11-02 21:48:45,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:48:45,981 INFO L225 Difference]: With dead ends: 144217 [2021-11-02 21:48:45,981 INFO L226 Difference]: Without dead ends: 91212 [2021-11-02 21:48:46,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.04ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:48:46,122 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 7766 mSDsluCounter, 23350 mSDsCounter, 0 mSdLazyCounter, 36947 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50642.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7816 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 36961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.06ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 36947 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63252.65ms IncrementalHoareTripleChecker+Time [2021-11-02 21:48:46,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7816 Valid, 517 Invalid, 36961 Unknown, 0 Unchecked, 75.06ms Time], IncrementalHoareTripleChecker [13 Valid, 36947 Invalid, 1 Unknown, 0 Unchecked, 63252.65ms Time] [2021-11-02 21:48:46,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91212 states. [2021-11-02 21:48:47,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91212 to 53287. [2021-11-02 21:48:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53287 states, 52909 states have (on average 1.298436938895084) internal successors, (68699), 53006 states have internal predecessors, (68699), 320 states have call successors, (320), 56 states have call predecessors, (320), 56 states have return successors, (320), 312 states have call predecessors, (320), 320 states have call successors, (320) [2021-11-02 21:48:48,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53287 states to 53287 states and 69339 transitions. [2021-11-02 21:48:48,102 INFO L78 Accepts]: Start accepts. Automaton has 53287 states and 69339 transitions. Word has length 223 [2021-11-02 21:48:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:48:48,103 INFO L470 AbstractCegarLoop]: Abstraction has 53287 states and 69339 transitions. [2021-11-02 21:48:48,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 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 21:48:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 53287 states and 69339 transitions. [2021-11-02 21:48:48,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-02 21:48:48,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:48:48,182 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:48:48,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 21:48:48,182 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:48:48,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:48:48,182 INFO L85 PathProgramCache]: Analyzing trace with hash 304686693, now seen corresponding path program 1 times [2021-11-02 21:48:48,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:48:48,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263043415] [2021-11-02 21:48:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:48:48,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:48:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:48:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 21:48:48,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:48:48,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263043415] [2021-11-02 21:48:48,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263043415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:48:48,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:48:48,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 21:48:48,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045418299] [2021-11-02 21:48:48,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 21:48:48,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:48:48,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 21:48:48,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 21:48:48,315 INFO L87 Difference]: Start difference. First operand 53287 states and 69339 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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 21:49:19,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:49:21,335 WARN L515 Checker$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 21:49:23,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:49:44,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:50:09,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:50:18,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:50:46,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:50:46,234 INFO L93 Difference]: Finished difference Result 214319 states and 284691 transitions. [2021-11-02 21:50:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 21:50:46,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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 226 [2021-11-02 21:50:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:50:46,800 INFO L225 Difference]: With dead ends: 214319 [2021-11-02 21:50:46,801 INFO L226 Difference]: Without dead ends: 161074 [2021-11-02 21:50:46,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:50:46,971 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 25249 mSDsluCounter, 33236 mSDsCounter, 0 mSdLazyCounter, 53908 mSolverCounterSat, 107 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90824.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25349 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 54017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 147.01ms SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 53908 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112963.39ms IncrementalHoareTripleChecker+Time [2021-11-02 21:50:46,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25349 Valid, 817 Invalid, 54017 Unknown, 0 Unchecked, 147.01ms Time], IncrementalHoareTripleChecker [107 Valid, 53908 Invalid, 2 Unknown, 0 Unchecked, 112963.39ms Time] [2021-11-02 21:50:47,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161074 states. [2021-11-02 21:50:49,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161074 to 53343. [2021-11-02 21:50:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53343 states, 52965 states have (on average 1.2981214009251392) internal successors, (68755), 53062 states have internal predecessors, (68755), 320 states have call successors, (320), 56 states have call predecessors, (320), 56 states have return successors, (320), 312 states have call predecessors, (320), 320 states have call successors, (320) [2021-11-02 21:50:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53343 states to 53343 states and 69395 transitions. [2021-11-02 21:50:49,389 INFO L78 Accepts]: Start accepts. Automaton has 53343 states and 69395 transitions. Word has length 226 [2021-11-02 21:50:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:50:49,390 INFO L470 AbstractCegarLoop]: Abstraction has 53343 states and 69395 transitions. [2021-11-02 21:50:49,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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 21:50:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 53343 states and 69395 transitions. [2021-11-02 21:50:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-02 21:50:49,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:50:49,472 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:50:49,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 21:50:49,472 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:50:49,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:50:49,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1450340573, now seen corresponding path program 1 times [2021-11-02 21:50:49,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:50:49,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774371624] [2021-11-02 21:50:49,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:50:49,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:50:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:50:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-02 21:50:49,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:50:49,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774371624] [2021-11-02 21:50:49,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774371624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:50:49,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:50:49,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:50:49,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927440366] [2021-11-02 21:50:49,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:50:49,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:50:49,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:50:49,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:50:49,636 INFO L87 Difference]: Start difference. First operand 53343 states and 69395 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 21:51:15,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:51:44,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:52:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:52:11,588 INFO L93 Difference]: Finished difference Result 146445 states and 191953 transitions. [2021-11-02 21:52:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:52:11,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 227 [2021-11-02 21:52:11,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:52:11,828 INFO L225 Difference]: With dead ends: 146445 [2021-11-02 21:52:11,828 INFO L226 Difference]: Without dead ends: 93144 [2021-11-02 21:52:11,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:52:11,980 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 7844 mSDsluCounter, 9398 mSDsCounter, 0 mSdLazyCounter, 25912 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59870.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7894 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 25922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.03ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78181.73ms IncrementalHoareTripleChecker+Time [2021-11-02 21:52:11,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7894 Valid, 370 Invalid, 25922 Unknown, 0 Unchecked, 56.03ms Time], IncrementalHoareTripleChecker [10 Valid, 25912 Invalid, 0 Unknown, 0 Unchecked, 78181.73ms Time] [2021-11-02 21:52:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93144 states. [2021-11-02 21:52:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93144 to 53363. [2021-11-02 21:52:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53363 states, 52985 states have (on average 1.2980088704350288) internal successors, (68775), 53082 states have internal predecessors, (68775), 320 states have call successors, (320), 56 states have call predecessors, (320), 56 states have return successors, (320), 312 states have call predecessors, (320), 320 states have call successors, (320) [2021-11-02 21:52:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53363 states to 53363 states and 69415 transitions. [2021-11-02 21:52:14,239 INFO L78 Accepts]: Start accepts. Automaton has 53363 states and 69415 transitions. Word has length 227 [2021-11-02 21:52:14,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:52:14,240 INFO L470 AbstractCegarLoop]: Abstraction has 53363 states and 69415 transitions. [2021-11-02 21:52:14,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 21:52:14,240 INFO L276 IsEmpty]: Start isEmpty. Operand 53363 states and 69415 transitions. [2021-11-02 21:52:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-02 21:52:14,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:52:14,314 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:52:14,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 21:52:14,317 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:52:14,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:52:14,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1929082593, now seen corresponding path program 1 times [2021-11-02 21:52:14,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:52:14,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007162666] [2021-11-02 21:52:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:52:14,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:52:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:52:14,492 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-02 21:52:14,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:52:14,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007162666] [2021-11-02 21:52:14,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007162666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:52:14,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:52:14,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:52:14,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730481310] [2021-11-02 21:52:14,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:52:14,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:52:14,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:52:14,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:52:14,494 INFO L87 Difference]: Start difference. First operand 53363 states and 69415 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 21:52:43,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:52:53,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:52:54,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:52:58,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:53:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:53:04,161 INFO L93 Difference]: Finished difference Result 106690 states and 138794 transitions. [2021-11-02 21:53:04,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:53:04,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 227 [2021-11-02 21:53:04,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:53:04,292 INFO L225 Difference]: With dead ends: 106690 [2021-11-02 21:53:04,292 INFO L226 Difference]: Without dead ends: 53369 [2021-11-02 21:53:04,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:53:04,423 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 9345 mSDsCounter, 0 mSdLazyCounter, 18534 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36433.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 18536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.47ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47348.81ms IncrementalHoareTripleChecker+Time [2021-11-02 21:53:04,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 18536 Unknown, 0 Unchecked, 42.47ms Time], IncrementalHoareTripleChecker [2 Valid, 18534 Invalid, 0 Unknown, 0 Unchecked, 47348.81ms Time] [2021-11-02 21:53:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53369 states. [2021-11-02 21:53:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53369 to 53369. [2021-11-02 21:53:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53369 states, 52991 states have (on average 1.2979751278518994) internal successors, (68781), 53088 states have internal predecessors, (68781), 320 states have call successors, (320), 56 states have call predecessors, (320), 56 states have return successors, (320), 312 states have call predecessors, (320), 320 states have call successors, (320) [2021-11-02 21:53:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53369 states to 53369 states and 69421 transitions. [2021-11-02 21:53:06,324 INFO L78 Accepts]: Start accepts. Automaton has 53369 states and 69421 transitions. Word has length 227 [2021-11-02 21:53:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:53:06,325 INFO L470 AbstractCegarLoop]: Abstraction has 53369 states and 69421 transitions. [2021-11-02 21:53:06,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 21:53:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 53369 states and 69421 transitions. [2021-11-02 21:53:06,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-02 21:53:06,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:53:06,398 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:53:06,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 21:53:06,398 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:53:06,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:53:06,399 INFO L85 PathProgramCache]: Analyzing trace with hash 130397526, now seen corresponding path program 1 times [2021-11-02 21:53:06,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:53:06,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832572968] [2021-11-02 21:53:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:53:06,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:53:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:53:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-02 21:53:06,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:53:06,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832572968] [2021-11-02 21:53:06,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832572968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:53:06,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 21:53:06,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 21:53:06,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395000790] [2021-11-02 21:53:06,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:53:06,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:53:06,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:53:06,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:53:06,753 INFO L87 Difference]: Start difference. First operand 53369 states and 69421 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 21:53:39,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:53:50,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 21:53:55,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:53:55,103 INFO L93 Difference]: Finished difference Result 106704 states and 138810 transitions. [2021-11-02 21:53:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:53:55,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 228 [2021-11-02 21:53:55,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:53:55,234 INFO L225 Difference]: With dead ends: 106704 [2021-11-02 21:53:55,234 INFO L226 Difference]: Without dead ends: 53377 [2021-11-02 21:53:55,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 21:53:55,492 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 0 mSDsluCounter, 9365 mSDsCounter, 0 mSdLazyCounter, 18534 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34583.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 18537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.05ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18534 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46177.27ms IncrementalHoareTripleChecker+Time [2021-11-02 21:53:55,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 18537 Unknown, 0 Unchecked, 42.05ms Time], IncrementalHoareTripleChecker [2 Valid, 18534 Invalid, 1 Unknown, 0 Unchecked, 46177.27ms Time] [2021-11-02 21:53:55,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53377 states. [2021-11-02 21:53:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53377 to 53377. [2021-11-02 21:53:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53377 states, 52999 states have (on average 1.2979301496254647) internal successors, (68789), 53096 states have internal predecessors, (68789), 320 states have call successors, (320), 56 states have call predecessors, (320), 56 states have return successors, (320), 312 states have call predecessors, (320), 320 states have call successors, (320) [2021-11-02 21:53:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53377 states to 53377 states and 69429 transitions. [2021-11-02 21:53:57,364 INFO L78 Accepts]: Start accepts. Automaton has 53377 states and 69429 transitions. Word has length 228 [2021-11-02 21:53:57,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:53:57,365 INFO L470 AbstractCegarLoop]: Abstraction has 53377 states and 69429 transitions. [2021-11-02 21:53:57,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 21:53:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 53377 states and 69429 transitions. [2021-11-02 21:53:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-02 21:53:57,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:53:57,451 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:53:57,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 21:53:57,452 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:53:57,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:53:57,452 INFO L85 PathProgramCache]: Analyzing trace with hash 405157140, now seen corresponding path program 1 times [2021-11-02 21:53:57,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:53:57,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767888634] [2021-11-02 21:53:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:53:57,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:53:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:53:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-02 21:53:57,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:53:57,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767888634] [2021-11-02 21:53:57,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767888634] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 21:53:57,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639575516] [2021-11-02 21:53:57,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:53:57,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 21:53:57,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:53:57,649 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 21:53:57,672 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 21:53:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:53:58,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 3359 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 21:53:58,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 21:53:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-02 21:53:59,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 21:53:59,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639575516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:53:59,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 21:53:59,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-02 21:53:59,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890646251] [2021-11-02 21:53:59,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:53:59,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:53:59,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:53:59,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:53:59,181 INFO L87 Difference]: Start difference. First operand 53377 states and 69429 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:54:25,474 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 21:55:15,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:55:15,758 INFO L93 Difference]: Finished difference Result 106496 states and 138523 transitions. [2021-11-02 21:55:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:55:15,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2021-11-02 21:55:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:55:16,067 INFO L225 Difference]: With dead ends: 106496 [2021-11-02 21:55:16,068 INFO L226 Difference]: Without dead ends: 106494 [2021-11-02 21:55:16,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.85ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:55:16,125 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 9095 mSDsluCounter, 9330 mSDsCounter, 0 mSdLazyCounter, 18492 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53547.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9095 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 18494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.69ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18492 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72518.67ms IncrementalHoareTripleChecker+Time [2021-11-02 21:55:16,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9095 Valid, 275 Invalid, 18494 Unknown, 0 Unchecked, 49.69ms Time], IncrementalHoareTripleChecker [1 Valid, 18492 Invalid, 1 Unknown, 0 Unchecked, 72518.67ms Time] [2021-11-02 21:55:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106494 states. [2021-11-02 21:55:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106494 to 106166. [2021-11-02 21:55:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106166 states, 105412 states have (on average 1.2973570371494707) internal successors, (136757), 105605 states have internal predecessors, (136757), 640 states have call successors, (640), 112 states have call predecessors, (640), 112 states have return successors, (640), 624 states have call predecessors, (640), 640 states have call successors, (640) [2021-11-02 21:55:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106166 states to 106166 states and 138037 transitions. [2021-11-02 21:55:20,241 INFO L78 Accepts]: Start accepts. Automaton has 106166 states and 138037 transitions. Word has length 228 [2021-11-02 21:55:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:55:20,242 INFO L470 AbstractCegarLoop]: Abstraction has 106166 states and 138037 transitions. [2021-11-02 21:55:20,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 21:55:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 106166 states and 138037 transitions. [2021-11-02 21:55:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-02 21:55:20,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:55:20,334 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 21:55:20,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 21:55:20,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 21:55:20,556 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:55:20,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:55:20,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1485097314, now seen corresponding path program 1 times [2021-11-02 21:55:20,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:55:20,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771028379] [2021-11-02 21:55:20,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:55:20,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:55:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:55:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-02 21:55:20,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:55:20,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771028379] [2021-11-02 21:55:20,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771028379] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 21:55:20,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680624459] [2021-11-02 21:55:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:55:20,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 21:55:20,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:55:20,761 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 21:55:20,763 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 21:55:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:55:21,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 3363 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 21:55:21,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 21:55:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-02 21:55:22,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 21:55:22,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680624459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:55:22,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 21:55:22,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-02 21:55:22,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046797866] [2021-11-02 21:55:22,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:55:22,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:55:22,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:55:22,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:55:22,566 INFO L87 Difference]: Start difference. First operand 106166 states and 138037 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 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 21:56:10,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 21:56:10,439 INFO L93 Difference]: Finished difference Result 106166 states and 138037 transitions. [2021-11-02 21:56:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 21:56:10,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 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 230 [2021-11-02 21:56:10,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 21:56:10,720 INFO L225 Difference]: With dead ends: 106166 [2021-11-02 21:56:10,720 INFO L226 Difference]: Without dead ends: 106159 [2021-11-02 21:56:10,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.08ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:56:10,773 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 9163 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9266 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31238.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9163 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 9266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44418.05ms IncrementalHoareTripleChecker+Time [2021-11-02 21:56:10,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9163 Valid, 110 Invalid, 9266 Unknown, 0 Unchecked, 28.18ms Time], IncrementalHoareTripleChecker [0 Valid, 9266 Invalid, 0 Unknown, 0 Unchecked, 44418.05ms Time] [2021-11-02 21:56:10,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106159 states. [2021-11-02 21:56:14,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106159 to 106159. [2021-11-02 21:56:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106159 states, 105406 states have (on average 1.2972980665237273) internal successors, (136743), 105598 states have internal predecessors, (136743), 640 states have call successors, (640), 112 states have call predecessors, (640), 112 states have return successors, (640), 624 states have call predecessors, (640), 640 states have call successors, (640) [2021-11-02 21:56:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106159 states to 106159 states and 138023 transitions. [2021-11-02 21:56:14,665 INFO L78 Accepts]: Start accepts. Automaton has 106159 states and 138023 transitions. Word has length 230 [2021-11-02 21:56:14,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 21:56:14,665 INFO L470 AbstractCegarLoop]: Abstraction has 106159 states and 138023 transitions. [2021-11-02 21:56:14,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 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 21:56:14,665 INFO L276 IsEmpty]: Start isEmpty. Operand 106159 states and 138023 transitions. [2021-11-02 21:56:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-02 21:56:15,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 21:56:15,066 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:15,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-02 21:56:15,274 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,SelfDestructingSolverStorable16 [2021-11-02 21:56:15,275 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 21:56:15,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 21:56:15,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1912184419, now seen corresponding path program 1 times [2021-11-02 21:56:15,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 21:56:15,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588693501] [2021-11-02 21:56:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:56:15,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 21:56:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:56:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-02 21:56:15,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 21:56:15,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588693501] [2021-11-02 21:56:15,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588693501] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 21:56:15,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898506210] [2021-11-02 21:56:15,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 21:56:15,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 21:56:15,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 21:56:15,524 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 21:56:15,591 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 21:56:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 21:56:16,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 4495 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 21:56:16,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 21:56:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-02 21:56:17,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 21:56:17,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898506210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 21:56:17,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 21:56:17,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 21:56:17,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102289325] [2021-11-02 21:56:17,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 21:56:17,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 21:56:17,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 21:56:17,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 21:56:17,339 INFO L87 Difference]: Start difference. First operand 106159 states and 138023 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) Killed by 15