./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.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 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 17:51:05,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 17:51:05,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 17:51:05,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 17:51:05,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 17:51:05,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 17:51:05,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 17:51:05,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 17:51:05,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 17:51:05,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 17:51:05,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 17:51:05,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 17:51:05,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 17:51:05,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 17:51:05,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 17:51:05,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 17:51:05,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 17:51:05,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 17:51:05,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 17:51:05,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 17:51:05,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 17:51:05,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 17:51:05,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 17:51:05,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 17:51:05,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 17:51:05,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 17:51:05,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 17:51:05,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 17:51:05,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 17:51:05,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 17:51:05,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 17:51:05,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 17:51:05,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 17:51:05,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 17:51:05,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 17:51:05,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 17:51:05,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 17:51:05,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 17:51:05,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 17:51:05,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 17:51:05,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 17:51:05,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 17:51:05,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 17:51:05,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 17:51:05,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 17:51:05,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 17:51:05,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 17:51:05,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 17:51:05,849 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 17:51:05,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 17:51:05,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 17:51:05,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 17:51:05,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 17:51:05,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 17:51:05,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 17:51:05,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 17:51:05,851 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 17:51:05,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 17:51:05,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 17:51:05,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 17:51:05,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 17:51:05,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:51:05,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 17:51:05,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 17:51:05,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 17:51:05,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 17:51:05,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 17:51:05,852 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 17:51:05,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 17:51:05,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 17:51:05,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 17:51:05,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 161acb090810893f5857465330b1e9af98cd436d8b1ab4337fc3709fda2d3260 [2021-11-02 17:51:06,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 17:51:06,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 17:51:06,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 17:51:06,093 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 17:51:06,094 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 17:51:06,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-02 17:51:06,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0574e1b16/ac900d0589064ea1b64c62c8e87b2acb/FLAGf6463cbf2 [2021-11-02 17:51:06,782 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 17:51:06,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-02 17:51:06,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0574e1b16/ac900d0589064ea1b64c62c8e87b2acb/FLAGf6463cbf2 [2021-11-02 17:51:07,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0574e1b16/ac900d0589064ea1b64c62c8e87b2acb [2021-11-02 17:51:07,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 17:51:07,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 17:51:07,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 17:51:07,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 17:51:07,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 17:51:07,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:51:07" (1/1) ... [2021-11-02 17:51:07,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6709849d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:07, skipping insertion in model container [2021-11-02 17:51:07,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:51:07" (1/1) ... [2021-11-02 17:51:07,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 17:51:07,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 17:51:07,658 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-02 17:51:08,024 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2021-11-02 17:51:08,760 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-02 17:51:08,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:51:08,834 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 17:51:08,898 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4482] [2021-11-02 17:51:08,948 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i[155153,155166] [2021-11-02 17:51:09,254 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-02 17:51:09,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:51:09,318 INFO L208 MainTranslator]: Completed translation [2021-11-02 17:51:09,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09 WrapperNode [2021-11-02 17:51:09,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 17:51:09,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 17:51:09,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 17:51:09,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 17:51:09,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09" (1/1) ... [2021-11-02 17:51:09,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09" (1/1) ... [2021-11-02 17:51:09,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 17:51:09,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 17:51:09,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 17:51:09,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 17:51:09,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09" (1/1) ... [2021-11-02 17:51:09,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09" (1/1) ... [2021-11-02 17:51:09,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09" (1/1) ... [2021-11-02 17:51:09,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09" (1/1) ... [2021-11-02 17:51:10,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09" (1/1) ... [2021-11-02 17:51:10,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09" (1/1) ... [2021-11-02 17:51:10,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09" (1/1) ... [2021-11-02 17:51:10,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 17:51:10,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 17:51:10,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 17:51:10,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 17:51:10,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09" (1/1) ... [2021-11-02 17:51:10,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:51:10,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:51:10,265 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 17:51:10,299 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 17:51:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 17:51:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 17:51:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-02 17:51:10,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-02 17:51:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-02 17:51:10,327 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-02 17:51:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-02 17:51:10,327 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-02 17:51:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_init_transfer [2021-11-02 17:51:10,327 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_init_transfer [2021-11-02 17:51:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure bulk_irq [2021-11-02 17:51:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure bulk_irq [2021-11-02 17:51:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 17:51:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 17:51:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2021-11-02 17:51:10,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2021-11-02 17:51:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-02 17:51:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_submit_int_urb [2021-11-02 17:51:10,329 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_submit_int_urb [2021-11-02 17:51:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-02 17:51:10,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-02 17:51:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure int_irq [2021-11-02 17:51:10,329 INFO L138 BoogieDeclarations]: Found implementation of procedure int_irq [2021-11-02 17:51:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 17:51:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 17:51:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure fill_frame [2021-11-02 17:51:10,329 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_frame [2021-11-02 17:51:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_stream_off [2021-11-02 17:51:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_stream_off [2021-11-02 17:51:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 17:51:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure isoc_irq [2021-11-02 17:51:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isoc_irq [2021-11-02 17:51:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure gspca_input_create_urb [2021-11-02 17:51:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure gspca_input_create_urb [2021-11-02 17:51:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 17:51:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-11-02 17:51:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-11-02 17:51:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-02 17:51:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-02 17:51:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2021-11-02 17:51:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2021-11-02 17:51:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_9 [2021-11-02 17:51:10,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_9 [2021-11-02 17:51:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 17:51:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-02 17:51:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-02 17:51:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 17:51:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 17:51:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 17:51:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 17:51:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 17:51:10,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 17:51:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-02 17:51:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-02 17:51:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 17:51:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 17:51:10,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 17:51:13,569 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 17:51:13,570 INFO L299 CfgBuilder]: Removed 2394 assume(true) statements. [2021-11-02 17:51:13,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:51:13 BoogieIcfgContainer [2021-11-02 17:51:13,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 17:51:13,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 17:51:13,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 17:51:13,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 17:51:13,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 05:51:07" (1/3) ... [2021-11-02 17:51:13,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9df755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:51:13, skipping insertion in model container [2021-11-02 17:51:13,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:51:09" (2/3) ... [2021-11-02 17:51:13,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9df755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:51:13, skipping insertion in model container [2021-11-02 17:51:13,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:51:13" (3/3) ... [2021-11-02 17:51:13,588 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--gspca--gspca_main.ko-entry_point.cil.out.i [2021-11-02 17:51:13,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 17:51:13,593 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-02 17:51:13,646 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 17:51:13,653 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 17:51:13,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-02 17:51:13,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 3337 states, 3248 states have (on average 1.4550492610837438) internal successors, (4726), 3258 states have internal predecessors, (4726), 63 states have call successors, (63), 20 states have call predecessors, (63), 20 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-02 17:51:13,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 17:51:13,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:51:13,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:51:13,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:51:13,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:51:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash 645787444, now seen corresponding path program 1 times [2021-11-02 17:51:13,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:51:13,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131117378] [2021-11-02 17:51:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:51:13,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:51:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:51:14,298 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 17:51:14,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:51:14,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131117378] [2021-11-02 17:51:14,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131117378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:51:14,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:51:14,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:51:14,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580395795] [2021-11-02 17:51:14,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:51:14,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:51:14,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:51:14,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:51:14,336 INFO L87 Difference]: Start difference. First operand has 3337 states, 3248 states have (on average 1.4550492610837438) internal successors, (4726), 3258 states have internal predecessors, (4726), 63 states have call successors, (63), 20 states have call predecessors, (63), 20 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 17:51:24,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:51:24,877 INFO L93 Difference]: Finished difference Result 6671 states and 9764 transitions. [2021-11-02 17:51:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:51:24,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-02 17:51:24,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:51:24,903 INFO L225 Difference]: With dead ends: 6671 [2021-11-02 17:51:24,903 INFO L226 Difference]: Without dead ends: 3328 [2021-11-02 17:51:24,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:51:24,920 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 9054 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8821.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 9056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10162.24ms IncrementalHoareTripleChecker+Time [2021-11-02 17:51:24,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 266 Invalid, 9056 Unknown, 0 Unchecked, 33.40ms Time], IncrementalHoareTripleChecker [2 Valid, 9054 Invalid, 0 Unknown, 0 Unchecked, 10162.24ms Time] [2021-11-02 17:51:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3328 states. [2021-11-02 17:51:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3328 to 3328. [2021-11-02 17:51:25,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3328 states, 3240 states have (on average 1.394753086419753) internal successors, (4519), 3249 states have internal predecessors, (4519), 63 states have call successors, (63), 20 states have call predecessors, (63), 20 states have return successors, (63), 61 states have call predecessors, (63), 63 states have call successors, (63) [2021-11-02 17:51:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 4645 transitions. [2021-11-02 17:51:25,061 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 4645 transitions. Word has length 97 [2021-11-02 17:51:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:51:25,062 INFO L470 AbstractCegarLoop]: Abstraction has 3328 states and 4645 transitions. [2021-11-02 17:51:25,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 17:51:25,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 4645 transitions. [2021-11-02 17:51:25,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 17:51:25,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:51:25,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:51:25,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 17:51:25,067 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:51:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:51:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash -817902440, now seen corresponding path program 1 times [2021-11-02 17:51:25,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:51:25,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932647083] [2021-11-02 17:51:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:51:25,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:51:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:51:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:51:25,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:51:25,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932647083] [2021-11-02 17:51:25,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932647083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:51:25,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:51:25,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:51:25,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616436058] [2021-11-02 17:51:25,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:51:25,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:51:25,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:51:25,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:51:25,365 INFO L87 Difference]: Start difference. First operand 3328 states and 4645 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 17:51:40,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:51:40,366 INFO L93 Difference]: Finished difference Result 9506 states and 13365 transitions. [2021-11-02 17:51:40,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:51:40,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 99 [2021-11-02 17:51:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:51:40,405 INFO L225 Difference]: With dead ends: 9506 [2021-11-02 17:51:40,405 INFO L226 Difference]: Without dead ends: 6387 [2021-11-02 17:51:40,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:51:40,419 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 4318 mSDsluCounter, 4630 mSDsCounter, 0 mSdLazyCounter, 9030 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12659.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4318 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 9033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.30ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14441.41ms IncrementalHoareTripleChecker+Time [2021-11-02 17:51:40,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4318 Valid, 315 Invalid, 9033 Unknown, 0 Unchecked, 33.30ms Time], IncrementalHoareTripleChecker [3 Valid, 9030 Invalid, 0 Unknown, 0 Unchecked, 14441.41ms Time] [2021-11-02 17:51:40,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6387 states. [2021-11-02 17:51:40,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6387 to 6387. [2021-11-02 17:51:40,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6387 states, 6216 states have (on average 1.4021879021879022) internal successors, (8716), 6230 states have internal predecessors, (8716), 126 states have call successors, (126), 40 states have call predecessors, (126), 40 states have return successors, (126), 122 states have call predecessors, (126), 126 states have call successors, (126) [2021-11-02 17:51:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6387 states to 6387 states and 8968 transitions. [2021-11-02 17:51:40,609 INFO L78 Accepts]: Start accepts. Automaton has 6387 states and 8968 transitions. Word has length 99 [2021-11-02 17:51:40,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:51:40,610 INFO L470 AbstractCegarLoop]: Abstraction has 6387 states and 8968 transitions. [2021-11-02 17:51:40,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 17:51:40,611 INFO L276 IsEmpty]: Start isEmpty. Operand 6387 states and 8968 transitions. [2021-11-02 17:51:40,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 17:51:40,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:51:40,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:51:40,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 17:51:40,614 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:51:40,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:51:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1990048497, now seen corresponding path program 1 times [2021-11-02 17:51:40,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:51:40,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138612350] [2021-11-02 17:51:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:51:40,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:51:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:51:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 17:51:40,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:51:40,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138612350] [2021-11-02 17:51:40,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138612350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:51:40,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:51:40,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 17:51:40,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184798494] [2021-11-02 17:51:40,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 17:51:40,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:51:40,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 17:51:40,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 17:51:40,828 INFO L87 Difference]: Start difference. First operand 6387 states and 8968 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 17:51:59,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:51:59,432 INFO L93 Difference]: Finished difference Result 12564 states and 17683 transitions. [2021-11-02 17:51:59,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 17:51:59,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 102 [2021-11-02 17:51:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:51:59,462 INFO L225 Difference]: With dead ends: 12564 [2021-11-02 17:51:59,463 INFO L226 Difference]: Without dead ends: 6386 [2021-11-02 17:51:59,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:51:59,481 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 8236 mSDsluCounter, 4600 mSDsCounter, 0 mSdLazyCounter, 12486 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15980.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8236 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 12520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.48ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 12486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18075.03ms IncrementalHoareTripleChecker+Time [2021-11-02 17:51:59,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8236 Valid, 314 Invalid, 12520 Unknown, 0 Unchecked, 52.48ms Time], IncrementalHoareTripleChecker [34 Valid, 12486 Invalid, 0 Unknown, 0 Unchecked, 18075.03ms Time] [2021-11-02 17:51:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6386 states. [2021-11-02 17:51:59,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6386 to 6386. [2021-11-02 17:51:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6386 states, 6215 states have (on average 1.4017699115044249) internal successors, (8712), 6229 states have internal predecessors, (8712), 126 states have call successors, (126), 40 states have call predecessors, (126), 40 states have return successors, (126), 122 states have call predecessors, (126), 126 states have call successors, (126) [2021-11-02 17:51:59,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6386 states to 6386 states and 8964 transitions. [2021-11-02 17:51:59,622 INFO L78 Accepts]: Start accepts. Automaton has 6386 states and 8964 transitions. Word has length 102 [2021-11-02 17:51:59,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:51:59,624 INFO L470 AbstractCegarLoop]: Abstraction has 6386 states and 8964 transitions. [2021-11-02 17:51:59,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 17:51:59,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6386 states and 8964 transitions. [2021-11-02 17:51:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 17:51:59,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:51:59,632 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-02 17:51:59,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 17:51:59,632 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:51:59,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:51:59,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1053729046, now seen corresponding path program 1 times [2021-11-02 17:51:59,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:51:59,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920464718] [2021-11-02 17:51:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:51:59,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:51:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:51:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 17:51:59,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:51:59,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920464718] [2021-11-02 17:51:59,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920464718] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 17:51:59,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265334926] [2021-11-02 17:51:59,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:51:59,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:51:59,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:51:59,916 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 17:51:59,920 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 17:52:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:52:00,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 3135 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 17:52:00,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 17:52:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 17:52:01,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 17:52:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 17:52:01,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265334926] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 17:52:01,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 17:52:01,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-02 17:52:01,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685145451] [2021-11-02 17:52:01,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 17:52:01,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:52:01,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 17:52:01,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 17:52:01,205 INFO L87 Difference]: Start difference. First operand 6386 states and 8964 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:52:25,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:52:25,122 INFO L93 Difference]: Finished difference Result 12709 states and 17966 transitions. [2021-11-02 17:52:25,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 17:52:25,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-02 17:52:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:52:25,150 INFO L225 Difference]: With dead ends: 12709 [2021-11-02 17:52:25,151 INFO L226 Difference]: Without dead ends: 6528 [2021-11-02 17:52:25,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.76ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-02 17:52:25,167 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 13752 mSDsCounter, 0 mSdLazyCounter, 18056 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20443.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 18224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.63ms SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 18056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23438.19ms IncrementalHoareTripleChecker+Time [2021-11-02 17:52:25,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 504 Invalid, 18224 Unknown, 0 Unchecked, 45.63ms Time], IncrementalHoareTripleChecker [168 Valid, 18056 Invalid, 0 Unknown, 0 Unchecked, 23438.19ms Time] [2021-11-02 17:52:25,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2021-11-02 17:52:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 6528. [2021-11-02 17:52:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6528 states, 6357 states have (on average 1.392795343715589) internal successors, (8854), 6371 states have internal predecessors, (8854), 126 states have call successors, (126), 40 states have call predecessors, (126), 40 states have return successors, (126), 122 states have call predecessors, (126), 126 states have call successors, (126) [2021-11-02 17:52:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6528 states to 6528 states and 9106 transitions. [2021-11-02 17:52:25,318 INFO L78 Accepts]: Start accepts. Automaton has 6528 states and 9106 transitions. Word has length 128 [2021-11-02 17:52:25,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:52:25,319 INFO L470 AbstractCegarLoop]: Abstraction has 6528 states and 9106 transitions. [2021-11-02 17:52:25,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:52:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 6528 states and 9106 transitions. [2021-11-02 17:52:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 17:52:25,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:52:25,323 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-02 17:52:25,347 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 17:52:25,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 17:52:25,528 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:52:25,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:52:25,528 INFO L85 PathProgramCache]: Analyzing trace with hash -158780294, now seen corresponding path program 2 times [2021-11-02 17:52:25,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:52:25,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104015247] [2021-11-02 17:52:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:52:25,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:52:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:52:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-02 17:52:25,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:52:25,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104015247] [2021-11-02 17:52:25,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104015247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:52:25,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:52:25,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:52:25,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263472572] [2021-11-02 17:52:25,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:52:25,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:52:25,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:52:25,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:52:25,821 INFO L87 Difference]: Start difference. First operand 6528 states and 9106 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 17:52:34,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:52:46,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:52:46,009 INFO L93 Difference]: Finished difference Result 19152 states and 27307 transitions. [2021-11-02 17:52:46,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:52:46,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 134 [2021-11-02 17:52:46,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:52:46,063 INFO L225 Difference]: With dead ends: 19152 [2021-11-02 17:52:46,063 INFO L226 Difference]: Without dead ends: 12839 [2021-11-02 17:52:46,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:52:46,092 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 4573 mSDsluCounter, 4433 mSDsCounter, 0 mSdLazyCounter, 8851 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17456.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4573 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 8863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.34ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 8851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19684.85ms IncrementalHoareTripleChecker+Time [2021-11-02 17:52:46,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4573 Valid, 453 Invalid, 8863 Unknown, 0 Unchecked, 25.34ms Time], IncrementalHoareTripleChecker [12 Valid, 8851 Invalid, 0 Unknown, 0 Unchecked, 19684.85ms Time] [2021-11-02 17:52:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12839 states. [2021-11-02 17:52:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12839 to 12827. [2021-11-02 17:52:46,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12827 states, 12490 states have (on average 1.3951961569255404) internal successors, (17426), 12514 states have internal predecessors, (17426), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-02 17:52:46,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 18182 transitions. [2021-11-02 17:52:46,405 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 18182 transitions. Word has length 134 [2021-11-02 17:52:46,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:52:46,405 INFO L470 AbstractCegarLoop]: Abstraction has 12827 states and 18182 transitions. [2021-11-02 17:52:46,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 17:52:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 18182 transitions. [2021-11-02 17:52:46,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-02 17:52:46,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:52:46,409 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-02 17:52:46,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 17:52:46,410 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:52:46,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:52:46,410 INFO L85 PathProgramCache]: Analyzing trace with hash -627213154, now seen corresponding path program 1 times [2021-11-02 17:52:46,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:52:46,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245529187] [2021-11-02 17:52:46,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:52:46,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:52:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:52:46,670 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-02 17:52:46,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:52:46,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245529187] [2021-11-02 17:52:46,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245529187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:52:46,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:52:46,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:52:46,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771144012] [2021-11-02 17:52:46,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:52:46,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:52:46,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:52:46,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:52:46,672 INFO L87 Difference]: Start difference. First operand 12827 states and 18182 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 17:52:51,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:52:56,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:52:57,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:52:57,730 INFO L93 Difference]: Finished difference Result 12827 states and 18182 transitions. [2021-11-02 17:52:57,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:52:57,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-02 17:52:57,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:52:57,775 INFO L225 Difference]: With dead ends: 12827 [2021-11-02 17:52:57,775 INFO L226 Difference]: Without dead ends: 12825 [2021-11-02 17:52:57,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:52:57,785 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 4517 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4513 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9600.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4517 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 4513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10774.25ms IncrementalHoareTripleChecker+Time [2021-11-02 17:52:57,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4517 Valid, 126 Invalid, 4513 Unknown, 0 Unchecked, 9.34ms Time], IncrementalHoareTripleChecker [0 Valid, 4513 Invalid, 0 Unknown, 0 Unchecked, 10774.25ms Time] [2021-11-02 17:52:57,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12825 states. [2021-11-02 17:52:58,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12825 to 12825. [2021-11-02 17:52:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12825 states, 12489 states have (on average 1.3951477300024022) internal successors, (17424), 12512 states have internal predecessors, (17424), 252 states have call successors, (252), 80 states have call predecessors, (252), 80 states have return successors, (504), 244 states have call predecessors, (504), 252 states have call successors, (504) [2021-11-02 17:52:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12825 states to 12825 states and 18180 transitions. [2021-11-02 17:52:58,090 INFO L78 Accepts]: Start accepts. Automaton has 12825 states and 18180 transitions. Word has length 135 [2021-11-02 17:52:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:52:58,090 INFO L470 AbstractCegarLoop]: Abstraction has 12825 states and 18180 transitions. [2021-11-02 17:52:58,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 17:52:58,091 INFO L276 IsEmpty]: Start isEmpty. Operand 12825 states and 18180 transitions. [2021-11-02 17:52:58,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-02 17:52:58,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:52:58,094 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-02 17:52:58,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 17:52:58,095 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:52:58,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:52:58,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2031237380, now seen corresponding path program 1 times [2021-11-02 17:52:58,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:52:58,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597765121] [2021-11-02 17:52:58,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:52:58,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:52:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:52:58,298 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-02 17:52:58,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:52:58,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597765121] [2021-11-02 17:52:58,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597765121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:52:58,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:52:58,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:52:58,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929481438] [2021-11-02 17:52:58,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:52:58,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:52:58,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:52:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:52:58,301 INFO L87 Difference]: Start difference. First operand 12825 states and 18180 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 17:53:07,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:53:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:53:16,953 INFO L93 Difference]: Finished difference Result 25429 states and 36098 transitions. [2021-11-02 17:53:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:53:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 136 [2021-11-02 17:53:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:53:17,037 INFO L225 Difference]: With dead ends: 25429 [2021-11-02 17:53:17,038 INFO L226 Difference]: Without dead ends: 25427 [2021-11-02 17:53:17,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:53:17,057 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 4513 mSDsluCounter, 4382 mSDsCounter, 0 mSdLazyCounter, 8786 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15896.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4513 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 8788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.95ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8786 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18063.43ms IncrementalHoareTripleChecker+Time [2021-11-02 17:53:17,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4513 Valid, 315 Invalid, 8788 Unknown, 0 Unchecked, 19.95ms Time], IncrementalHoareTripleChecker [1 Valid, 8786 Invalid, 1 Unknown, 0 Unchecked, 18063.43ms Time] [2021-11-02 17:53:17,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25427 states. [2021-11-02 17:53:17,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25427 to 25421. [2021-11-02 17:53:17,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25421 states, 24753 states have (on average 1.3969619844059307) internal successors, (34579), 24796 states have internal predecessors, (34579), 504 states have call successors, (504), 160 states have call predecessors, (504), 160 states have return successors, (1008), 488 states have call predecessors, (1008), 504 states have call successors, (1008) [2021-11-02 17:53:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25421 states to 25421 states and 36091 transitions. [2021-11-02 17:53:17,731 INFO L78 Accepts]: Start accepts. Automaton has 25421 states and 36091 transitions. Word has length 136 [2021-11-02 17:53:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:53:17,731 INFO L470 AbstractCegarLoop]: Abstraction has 25421 states and 36091 transitions. [2021-11-02 17:53:17,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 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 17:53:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 25421 states and 36091 transitions. [2021-11-02 17:53:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-02 17:53:17,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:53:17,736 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-02 17:53:17,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 17:53:17,736 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:53:17,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:53:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1456141976, now seen corresponding path program 1 times [2021-11-02 17:53:17,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:53:17,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354555333] [2021-11-02 17:53:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:53:17,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:53:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:53:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-02 17:53:17,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:53:17,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354555333] [2021-11-02 17:53:17,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354555333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:53:17,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:53:17,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:53:17,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909989933] [2021-11-02 17:53:17,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:53:17,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:53:17,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:53:17,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:53:17,932 INFO L87 Difference]: Start difference. First operand 25421 states and 36091 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:53:27,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:53:27,608 INFO L93 Difference]: Finished difference Result 25421 states and 36091 transitions. [2021-11-02 17:53:27,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:53:27,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-02 17:53:27,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:53:27,699 INFO L225 Difference]: With dead ends: 25421 [2021-11-02 17:53:27,699 INFO L226 Difference]: Without dead ends: 25419 [2021-11-02 17:53:27,717 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 17:53:27,718 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 4513 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4511 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7917.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4513 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 4511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9223.86ms IncrementalHoareTripleChecker+Time [2021-11-02 17:53:27,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4513 Valid, 126 Invalid, 4511 Unknown, 0 Unchecked, 9.03ms Time], IncrementalHoareTripleChecker [0 Valid, 4511 Invalid, 0 Unknown, 0 Unchecked, 9223.86ms Time] [2021-11-02 17:53:27,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25419 states. [2021-11-02 17:53:28,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25419 to 25419. [2021-11-02 17:53:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25419 states, 24752 states have (on average 1.396937621202327) internal successors, (34577), 24794 states have internal predecessors, (34577), 504 states have call successors, (504), 160 states have call predecessors, (504), 160 states have return successors, (1008), 488 states have call predecessors, (1008), 504 states have call successors, (1008) [2021-11-02 17:53:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25419 states to 25419 states and 36089 transitions. [2021-11-02 17:53:28,413 INFO L78 Accepts]: Start accepts. Automaton has 25419 states and 36089 transitions. Word has length 137 [2021-11-02 17:53:28,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:53:28,413 INFO L470 AbstractCegarLoop]: Abstraction has 25419 states and 36089 transitions. [2021-11-02 17:53:28,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:53:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 25419 states and 36089 transitions. [2021-11-02 17:53:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-02 17:53:28,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:53:28,418 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-02 17:53:28,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 17:53:28,418 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:53:28,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:53:28,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2104247694, now seen corresponding path program 1 times [2021-11-02 17:53:28,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:53:28,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262848211] [2021-11-02 17:53:28,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:53:28,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:53:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:53:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-02 17:53:28,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:53:28,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262848211] [2021-11-02 17:53:28,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262848211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:53:28,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:53:28,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:53:28,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455168749] [2021-11-02 17:53:28,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:53:28,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:53:28,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:53:28,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:53:28,608 INFO L87 Difference]: Start difference. First operand 25419 states and 36089 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:53:36,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:53:38,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:53:38,574 INFO L93 Difference]: Finished difference Result 25419 states and 36089 transitions. [2021-11-02 17:53:38,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:53:38,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-02 17:53:38,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:53:38,634 INFO L225 Difference]: With dead ends: 25419 [2021-11-02 17:53:38,635 INFO L226 Difference]: Without dead ends: 25411 [2021-11-02 17:53:38,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:53:38,646 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 4510 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4509 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8174.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 4509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9403.11ms IncrementalHoareTripleChecker+Time [2021-11-02 17:53:38,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4510 Valid, 126 Invalid, 4509 Unknown, 0 Unchecked, 9.21ms Time], IncrementalHoareTripleChecker [0 Valid, 4509 Invalid, 0 Unknown, 0 Unchecked, 9403.11ms Time] [2021-11-02 17:53:38,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25411 states. [2021-11-02 17:53:39,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25411 to 25411. [2021-11-02 17:53:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25411 states, 24745 states have (on average 1.3969286724590826) internal successors, (34567), 24786 states have internal predecessors, (34567), 504 states have call successors, (504), 160 states have call predecessors, (504), 160 states have return successors, (1008), 488 states have call predecessors, (1008), 504 states have call successors, (1008) [2021-11-02 17:53:39,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25411 states to 25411 states and 36079 transitions. [2021-11-02 17:53:39,262 INFO L78 Accepts]: Start accepts. Automaton has 25411 states and 36079 transitions. Word has length 138 [2021-11-02 17:53:39,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:53:39,262 INFO L470 AbstractCegarLoop]: Abstraction has 25411 states and 36079 transitions. [2021-11-02 17:53:39,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 17:53:39,263 INFO L276 IsEmpty]: Start isEmpty. Operand 25411 states and 36079 transitions. [2021-11-02 17:53:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-02 17:53:39,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:53:39,305 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-02 17:53:39,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 17:53:39,305 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:53:39,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:53:39,306 INFO L85 PathProgramCache]: Analyzing trace with hash 703428579, now seen corresponding path program 1 times [2021-11-02 17:53:39,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:53:39,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471057662] [2021-11-02 17:53:39,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:53:39,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:53:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:53:39,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-02 17:53:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:53:39,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-02 17:53:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:53:39,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-02 17:53:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:53:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 17:53:39,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:53:39,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471057662] [2021-11-02 17:53:39,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471057662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:53:39,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:53:39,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 17:53:39,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76785965] [2021-11-02 17:53:39,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 17:53:39,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:53:39,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 17:53:39,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:53:39,686 INFO L87 Difference]: Start difference. First operand 25411 states and 36079 transitions. Second operand has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 17:53:54,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:54:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:54:04,859 INFO L93 Difference]: Finished difference Result 51919 states and 74985 transitions. [2021-11-02 17:54:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 17:54:04,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 227 [2021-11-02 17:54:04,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:54:04,944 INFO L225 Difference]: With dead ends: 51919 [2021-11-02 17:54:04,944 INFO L226 Difference]: Without dead ends: 26723 [2021-11-02 17:54:05,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.07ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 17:54:05,033 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 4732 mSDsluCounter, 7059 mSDsCounter, 0 mSdLazyCounter, 13049 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21356.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 13369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.00ms SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 13049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24217.68ms IncrementalHoareTripleChecker+Time [2021-11-02 17:54:05,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 135 Invalid, 13369 Unknown, 0 Unchecked, 54.00ms Time], IncrementalHoareTripleChecker [320 Valid, 13049 Invalid, 0 Unknown, 0 Unchecked, 24217.68ms Time] [2021-11-02 17:54:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26723 states. [2021-11-02 17:54:05,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26723 to 26595. [2021-11-02 17:54:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26595 states, 25753 states have (on average 1.3386789888556674) internal successors, (34475), 25858 states have internal predecessors, (34475), 536 states have call successors, (536), 160 states have call predecessors, (536), 304 states have return successors, (1432), 608 states have call predecessors, (1432), 536 states have call successors, (1432) [2021-11-02 17:54:05,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26595 states to 26595 states and 36443 transitions. [2021-11-02 17:54:05,816 INFO L78 Accepts]: Start accepts. Automaton has 26595 states and 36443 transitions. Word has length 227 [2021-11-02 17:54:05,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:54:05,817 INFO L470 AbstractCegarLoop]: Abstraction has 26595 states and 36443 transitions. [2021-11-02 17:54:05,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 4 states have internal predecessors, (212), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 17:54:05,817 INFO L276 IsEmpty]: Start isEmpty. Operand 26595 states and 36443 transitions. [2021-11-02 17:54:05,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-02 17:54:05,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:54:05,844 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-02 17:54:05,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 17:54:05,845 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:54:05,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:54:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1321410779, now seen corresponding path program 1 times [2021-11-02 17:54:05,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:54:05,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113865682] [2021-11-02 17:54:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:54:05,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:54:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:54:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-02 17:54:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:54:06,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-02 17:54:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:54:06,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-02 17:54:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:54:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 17:54:06,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:54:06,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113865682] [2021-11-02 17:54:06,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113865682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:54:06,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:54:06,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 17:54:06,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539857269] [2021-11-02 17:54:06,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 17:54:06,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:54:06,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 17:54:06,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 17:54:06,112 INFO L87 Difference]: Start difference. First operand 26595 states and 36443 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-02 17:54:17,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:54:30,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:54:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:54:33,987 INFO L93 Difference]: Finished difference Result 53311 states and 74549 transitions. [2021-11-02 17:54:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 17:54:33,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 227 [2021-11-02 17:54:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:54:34,082 INFO L225 Difference]: With dead ends: 53311 [2021-11-02 17:54:34,083 INFO L226 Difference]: Without dead ends: 26931 [2021-11-02 17:54:34,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.88ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 17:54:34,168 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 316 mSDsluCounter, 7517 mSDsCounter, 0 mSdLazyCounter, 12926 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23964.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 13014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.12ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 12926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26936.83ms IncrementalHoareTripleChecker+Time [2021-11-02 17:54:34,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 261 Invalid, 13014 Unknown, 0 Unchecked, 45.12ms Time], IncrementalHoareTripleChecker [88 Valid, 12926 Invalid, 0 Unknown, 0 Unchecked, 26936.83ms Time] [2021-11-02 17:54:34,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26931 states. [2021-11-02 17:54:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26931 to 26603. [2021-11-02 17:54:34,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26603 states, 25761 states have (on average 1.3385738131283724) internal successors, (34483), 25866 states have internal predecessors, (34483), 536 states have call successors, (536), 160 states have call predecessors, (536), 304 states have return successors, (1432), 608 states have call predecessors, (1432), 536 states have call successors, (1432) [2021-11-02 17:54:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26603 states to 26603 states and 36451 transitions. [2021-11-02 17:54:34,988 INFO L78 Accepts]: Start accepts. Automaton has 26603 states and 36451 transitions. Word has length 227 [2021-11-02 17:54:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:54:34,988 INFO L470 AbstractCegarLoop]: Abstraction has 26603 states and 36451 transitions. [2021-11-02 17:54:34,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-02 17:54:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 26603 states and 36451 transitions. [2021-11-02 17:54:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-02 17:54:35,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:54:35,020 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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 17:54:35,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 17:54:35,021 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:54:35,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:54:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash -253907802, now seen corresponding path program 1 times [2021-11-02 17:54:35,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:54:35,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054197523] [2021-11-02 17:54:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:54:35,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:54:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:54:35,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-02 17:54:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:54:35,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-02 17:54:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:54:35,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-02 17:54:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:54:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 17:54:35,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:54:35,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054197523] [2021-11-02 17:54:35,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054197523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:54:35,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:54:35,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 17:54:35,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914279724] [2021-11-02 17:54:35,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 17:54:35,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:54:35,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 17:54:35,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:54:35,464 INFO L87 Difference]: Start difference. First operand 26603 states and 36451 transitions. Second operand has 5 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 17:55:01,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:55:13,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:55:15,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:55:15,415 INFO L93 Difference]: Finished difference Result 53479 states and 74625 transitions. [2021-11-02 17:55:15,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 17:55:15,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 229 [2021-11-02 17:55:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:55:15,496 INFO L225 Difference]: With dead ends: 53479 [2021-11-02 17:55:15,496 INFO L226 Difference]: Without dead ends: 27091 [2021-11-02 17:55:15,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.82ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 17:55:15,569 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 369 mSDsluCounter, 11906 mSDsCounter, 0 mSdLazyCounter, 17296 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34080.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 17394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.68ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 17296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38858.23ms IncrementalHoareTripleChecker+Time [2021-11-02 17:55:15,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 379 Invalid, 17394 Unknown, 0 Unchecked, 67.68ms Time], IncrementalHoareTripleChecker [98 Valid, 17296 Invalid, 0 Unknown, 0 Unchecked, 38858.23ms Time] [2021-11-02 17:55:15,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27091 states. [2021-11-02 17:55:16,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27091 to 26603. [2021-11-02 17:55:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26603 states, 25761 states have (on average 1.3382632661775553) internal successors, (34475), 25866 states have internal predecessors, (34475), 536 states have call successors, (536), 160 states have call predecessors, (536), 304 states have return successors, (1432), 608 states have call predecessors, (1432), 536 states have call successors, (1432) [2021-11-02 17:55:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26603 states to 26603 states and 36443 transitions. [2021-11-02 17:55:16,341 INFO L78 Accepts]: Start accepts. Automaton has 26603 states and 36443 transitions. Word has length 229 [2021-11-02 17:55:16,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:55:16,342 INFO L470 AbstractCegarLoop]: Abstraction has 26603 states and 36443 transitions. [2021-11-02 17:55:16,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.8) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 17:55:16,342 INFO L276 IsEmpty]: Start isEmpty. Operand 26603 states and 36443 transitions. [2021-11-02 17:55:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-02 17:55:16,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:55:16,367 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-02 17:55:16,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 17:55:16,367 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:55:16,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:55:16,368 INFO L85 PathProgramCache]: Analyzing trace with hash -689956894, now seen corresponding path program 1 times [2021-11-02 17:55:16,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:55:16,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89313190] [2021-11-02 17:55:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:55:16,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:55:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:55:16,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-02 17:55:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:55:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-02 17:55:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:55:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-02 17:55:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:55:17,244 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 17:55:17,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:55:17,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89313190] [2021-11-02 17:55:17,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89313190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:55:17,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:55:17,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 17:55:17,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644415013] [2021-11-02 17:55:17,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 17:55:17,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:55:17,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 17:55:17,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-02 17:55:17,247 INFO L87 Difference]: Start difference. First operand 26603 states and 36443 transitions. Second operand has 15 states, 15 states have (on average 14.4) internal successors, (216), 14 states have internal predecessors, (216), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 17:57:13,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:57:30,051 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:57:34,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:58:09,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:58:17,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 17:58:28,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:58:28,216 INFO L93 Difference]: Finished difference Result 141371 states and 194167 transitions. [2021-11-02 17:58:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 17:58:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.4) internal successors, (216), 14 states have internal predecessors, (216), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 231 [2021-11-02 17:58:28,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:58:28,653 INFO L225 Difference]: With dead ends: 141371 [2021-11-02 17:58:28,653 INFO L226 Difference]: Without dead ends: 114983 [2021-11-02 17:58:28,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 692.81ms TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 17:58:28,739 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 34684 mSDsluCounter, 58869 mSDsCounter, 0 mSdLazyCounter, 79490 mSolverCounterSat, 2290 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 160393.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34765 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 81781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 447.66ms SdHoareTripleChecker+Time, 2290 IncrementalHoareTripleChecker+Valid, 79490 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185609.40ms IncrementalHoareTripleChecker+Time [2021-11-02 17:58:28,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34765 Valid, 1152 Invalid, 81781 Unknown, 0 Unchecked, 447.66ms Time], IncrementalHoareTripleChecker [2290 Valid, 79490 Invalid, 1 Unknown, 0 Unchecked, 185609.40ms Time] [2021-11-02 17:58:28,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114983 states. [2021-11-02 17:58:30,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114983 to 28427. [2021-11-02 17:58:30,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28427 states, 27465 states have (on average 1.3471327143637357) internal successors, (36999), 27570 states have internal predecessors, (36999), 632 states have call successors, (632), 160 states have call predecessors, (632), 328 states have return successors, (2064), 728 states have call predecessors, (2064), 632 states have call successors, (2064) [2021-11-02 17:58:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28427 states to 28427 states and 39695 transitions. [2021-11-02 17:58:30,672 INFO L78 Accepts]: Start accepts. Automaton has 28427 states and 39695 transitions. Word has length 231 [2021-11-02 17:58:30,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:58:30,672 INFO L470 AbstractCegarLoop]: Abstraction has 28427 states and 39695 transitions. [2021-11-02 17:58:30,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.4) internal successors, (216), 14 states have internal predecessors, (216), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 17:58:30,673 INFO L276 IsEmpty]: Start isEmpty. Operand 28427 states and 39695 transitions. [2021-11-02 17:58:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-02 17:58:30,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:58:30,695 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-02 17:58:30,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 17:58:30,695 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:58:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:58:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1832459360, now seen corresponding path program 1 times [2021-11-02 17:58:30,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:58:30,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32395081] [2021-11-02 17:58:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:58:30,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:58:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:58:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-02 17:58:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:58:31,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-02 17:58:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:58:31,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-02 17:58:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:58:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 17:58:31,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:58:31,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32395081] [2021-11-02 17:58:31,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32395081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:58:31,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:58:31,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 17:58:31,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989679288] [2021-11-02 17:58:31,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 17:58:31,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:58:31,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 17:58:31,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-02 17:58:31,319 INFO L87 Difference]: Start difference. First operand 28427 states and 39695 transitions. Second operand has 10 states, 10 states have (on average 21.6) internal successors, (216), 9 states have internal predecessors, (216), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 17:59:48,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:01:04,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:01:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:01:18,564 INFO L93 Difference]: Finished difference Result 72953 states and 105869 transitions. [2021-11-02 18:01:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 18:01:18,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 9 states have internal predecessors, (216), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 231 [2021-11-02 18:01:18,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:01:18,727 INFO L225 Difference]: With dead ends: 72953 [2021-11-02 18:01:18,727 INFO L226 Difference]: Without dead ends: 44741 [2021-11-02 18:01:18,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1639.81ms TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 18:01:18,843 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 4956 mSDsluCounter, 61413 mSDsCounter, 0 mSdLazyCounter, 71808 mSolverCounterSat, 270 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135141.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4956 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 72079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 309.32ms SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 71808 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162712.61ms IncrementalHoareTripleChecker+Time [2021-11-02 18:01:18,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4956 Valid, 2320 Invalid, 72079 Unknown, 0 Unchecked, 309.32ms Time], IncrementalHoareTripleChecker [270 Valid, 71808 Invalid, 1 Unknown, 0 Unchecked, 162712.61ms Time] [2021-11-02 18:01:18,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44741 states. [2021-11-02 18:01:20,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44741 to 42539. [2021-11-02 18:01:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42539 states, 41093 states have (on average 1.347504441145694) internal successors, (55373), 41246 states have internal predecessors, (55373), 944 states have call successors, (944), 240 states have call predecessors, (944), 500 states have return successors, (4152), 1100 states have call predecessors, (4152), 944 states have call successors, (4152) [2021-11-02 18:01:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42539 states to 42539 states and 60469 transitions. [2021-11-02 18:01:20,670 INFO L78 Accepts]: Start accepts. Automaton has 42539 states and 60469 transitions. Word has length 231 [2021-11-02 18:01:20,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:01:20,670 INFO L470 AbstractCegarLoop]: Abstraction has 42539 states and 60469 transitions. [2021-11-02 18:01:20,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 9 states have internal predecessors, (216), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 18:01:20,671 INFO L276 IsEmpty]: Start isEmpty. Operand 42539 states and 60469 transitions. [2021-11-02 18:01:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-02 18:01:20,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:01:20,697 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-02 18:01:20,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 18:01:20,697 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 18:01:20,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:01:20,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1218517416, now seen corresponding path program 1 times [2021-11-02 18:01:20,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:01:20,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552218042] [2021-11-02 18:01:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:01:20,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:01:20,758 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 18:01:20,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390678911] [2021-11-02 18:01:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:01:20,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:01:20,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:01:20,760 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 18:01:20,761 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 18:01:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:01:21,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 4053 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 18:01:21,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:01:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 18:01:22,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 18:01:22,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:01:22,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552218042] [2021-11-02 18:01:22,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 18:01:22,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390678911] [2021-11-02 18:01:22,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390678911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:01:22,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:01:22,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 18:01:22,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125459484] [2021-11-02 18:01:22,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 18:01:22,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:01:22,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 18:01:22,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:01:22,140 INFO L87 Difference]: Start difference. First operand 42539 states and 60469 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 18:01:51,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:01:51,493 INFO L93 Difference]: Finished difference Result 111875 states and 157057 transitions. [2021-11-02 18:01:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 18:01:51,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 256 [2021-11-02 18:01:51,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:01:51,739 INFO L225 Difference]: With dead ends: 111875 [2021-11-02 18:01:51,740 INFO L226 Difference]: Without dead ends: 69551 [2021-11-02 18:01:51,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 18:01:51,873 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 2901 mSDsluCounter, 4379 mSDsCounter, 0 mSdLazyCounter, 11157 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21662.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 11191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.08ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 11157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26318.16ms IncrementalHoareTripleChecker+Time [2021-11-02 18:01:51,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2914 Valid, 291 Invalid, 11191 Unknown, 0 Unchecked, 25.08ms Time], IncrementalHoareTripleChecker [34 Valid, 11157 Invalid, 0 Unknown, 0 Unchecked, 26318.16ms Time] [2021-11-02 18:01:52,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69551 states. [2021-11-02 18:01:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69551 to 45665. [2021-11-02 18:01:54,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45665 states, 44219 states have (on average 1.3449196046948144) internal successors, (59471), 44372 states have internal predecessors, (59471), 944 states have call successors, (944), 240 states have call predecessors, (944), 500 states have return successors, (4152), 1100 states have call predecessors, (4152), 944 states have call successors, (4152) [2021-11-02 18:01:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45665 states to 45665 states and 64567 transitions. [2021-11-02 18:01:54,199 INFO L78 Accepts]: Start accepts. Automaton has 45665 states and 64567 transitions. Word has length 256 [2021-11-02 18:01:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:01:54,200 INFO L470 AbstractCegarLoop]: Abstraction has 45665 states and 64567 transitions. [2021-11-02 18:01:54,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 18:01:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 45665 states and 64567 transitions. [2021-11-02 18:01:54,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-02 18:01:54,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:01:54,230 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-02 18:01:54,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 18:01:54,456 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,SelfDestructingSolverStorable14 [2021-11-02 18:01:54,456 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 18:01:54,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:01:54,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2066685334, now seen corresponding path program 1 times [2021-11-02 18:01:54,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:01:54,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131858638] [2021-11-02 18:01:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:01:54,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:01:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:01:54,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-02 18:01:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:01:54,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-02 18:01:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:01:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-02 18:01:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:01:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-02 18:01:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:01:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 18:01:54,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:01:54,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131858638] [2021-11-02 18:01:54,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131858638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:01:54,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:01:54,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:01:54,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335951759] [2021-11-02 18:01:54,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:01:54,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:01:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:01:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:01:54,772 INFO L87 Difference]: Start difference. First operand 45665 states and 64567 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-02 18:02:14,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:02:18,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:02:24,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:02:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:02:28,605 INFO L93 Difference]: Finished difference Result 92963 states and 135993 transitions. [2021-11-02 18:02:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:02:28,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 259 [2021-11-02 18:02:28,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:02:28,847 INFO L225 Difference]: With dead ends: 92963 [2021-11-02 18:02:28,847 INFO L226 Difference]: Without dead ends: 47513 [2021-11-02 18:02:28,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:02:28,984 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 287 mSDsluCounter, 7534 mSDsCounter, 0 mSdLazyCounter, 12939 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26245.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 13025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.50ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 12939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31602.64ms IncrementalHoareTripleChecker+Time [2021-11-02 18:02:28,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 264 Invalid, 13025 Unknown, 0 Unchecked, 53.50ms Time], IncrementalHoareTripleChecker [86 Valid, 12939 Invalid, 0 Unknown, 0 Unchecked, 31602.64ms Time] [2021-11-02 18:02:29,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47513 states. [2021-11-02 18:02:30,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47513 to 45677. [2021-11-02 18:02:30,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45677 states, 44231 states have (on average 1.3448260269946417) internal successors, (59483), 44384 states have internal predecessors, (59483), 944 states have call successors, (944), 240 states have call predecessors, (944), 500 states have return successors, (4152), 1100 states have call predecessors, (4152), 944 states have call successors, (4152) [2021-11-02 18:02:30,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45677 states to 45677 states and 64579 transitions. [2021-11-02 18:02:30,985 INFO L78 Accepts]: Start accepts. Automaton has 45677 states and 64579 transitions. Word has length 259 [2021-11-02 18:02:30,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:02:30,985 INFO L470 AbstractCegarLoop]: Abstraction has 45677 states and 64579 transitions. [2021-11-02 18:02:30,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-02 18:02:30,985 INFO L276 IsEmpty]: Start isEmpty. Operand 45677 states and 64579 transitions. [2021-11-02 18:02:31,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-02 18:02:31,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:02:31,015 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-02 18:02:31,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 18:02:31,015 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 18:02:31,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:02:31,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1233588264, now seen corresponding path program 1 times [2021-11-02 18:02:31,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:02:31,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644371819] [2021-11-02 18:02:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:02:31,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:02:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:02:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-02 18:02:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:02:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-02 18:02:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:02:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-02 18:02:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:02:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-02 18:02:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:02:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 18:02:31,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:02:31,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644371819] [2021-11-02 18:02:31,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644371819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:02:31,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:02:31,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:02:31,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329732832] [2021-11-02 18:02:31,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:02:31,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:02:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:02:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:02:31,410 INFO L87 Difference]: Start difference. First operand 45677 states and 64579 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-02 18:02:45,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:03:10,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:03:10,098 INFO L93 Difference]: Finished difference Result 94715 states and 138585 transitions. [2021-11-02 18:03:10,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 18:03:10,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 259 [2021-11-02 18:03:10,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:03:10,313 INFO L225 Difference]: With dead ends: 94715 [2021-11-02 18:03:10,314 INFO L226 Difference]: Without dead ends: 49253 [2021-11-02 18:03:10,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.86ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 18:03:10,507 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 483 mSDsluCounter, 12033 mSDsCounter, 0 mSdLazyCounter, 17491 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30120.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 17579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.87ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 17491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36252.14ms IncrementalHoareTripleChecker+Time [2021-11-02 18:03:10,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 445 Invalid, 17579 Unknown, 0 Unchecked, 62.87ms Time], IncrementalHoareTripleChecker [88 Valid, 17491 Invalid, 0 Unknown, 0 Unchecked, 36252.14ms Time] [2021-11-02 18:03:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49253 states. [2021-11-02 18:03:12,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49253 to 45701. [2021-11-02 18:03:12,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45701 states, 44255 states have (on average 1.3446390238391142) internal successors, (59507), 44408 states have internal predecessors, (59507), 944 states have call successors, (944), 240 states have call predecessors, (944), 500 states have return successors, (4152), 1100 states have call predecessors, (4152), 944 states have call successors, (4152) [2021-11-02 18:03:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45701 states to 45701 states and 64603 transitions. [2021-11-02 18:03:12,456 INFO L78 Accepts]: Start accepts. Automaton has 45701 states and 64603 transitions. Word has length 259 [2021-11-02 18:03:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:03:12,457 INFO L470 AbstractCegarLoop]: Abstraction has 45701 states and 64603 transitions. [2021-11-02 18:03:12,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-02 18:03:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 45701 states and 64603 transitions. [2021-11-02 18:03:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-02 18:03:12,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:03:12,484 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-11-02 18:03:12,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 18:03:12,484 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 18:03:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:03:12,484 INFO L85 PathProgramCache]: Analyzing trace with hash 435435087, now seen corresponding path program 1 times [2021-11-02 18:03:12,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:03:12,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926645638] [2021-11-02 18:03:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:03:12,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:03:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:03:13,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-02 18:03:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:03:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-02 18:03:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:03:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-02 18:03:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:03:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 18:03:14,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:03:14,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926645638] [2021-11-02 18:03:14,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926645638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:03:14,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:03:14,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 18:03:14,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087593998] [2021-11-02 18:03:14,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 18:03:14,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:03:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 18:03:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-02 18:03:14,028 INFO L87 Difference]: Start difference. First operand 45701 states and 64603 transitions. Second operand has 12 states, 12 states have (on average 18.5) internal successors, (222), 11 states have internal predecessors, (222), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 18:03:16,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:03:18,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:04:20,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-02 18:04:34,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] Killed by 15