./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--ttusb-dec--ttusb_dec.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--ttusb-dec--ttusb_dec.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 1848e360a16ec6531e7d7aea690ab68ac7295c6b0bdec191a41fa9ee0518b66d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 17:54:40,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 17:54:40,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 17:54:40,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 17:54:40,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 17:54:40,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 17:54:40,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 17:54:40,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 17:54:40,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 17:54:40,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 17:54:40,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 17:54:40,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 17:54:40,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 17:54:40,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 17:54:40,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 17:54:40,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 17:54:40,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 17:54:40,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 17:54:40,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 17:54:40,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 17:54:40,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 17:54:40,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 17:54:40,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 17:54:40,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 17:54:40,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 17:54:40,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 17:54:40,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 17:54:40,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 17:54:40,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 17:54:40,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 17:54:40,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 17:54:40,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 17:54:40,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 17:54:40,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 17:54:40,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 17:54:40,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 17:54:40,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 17:54:40,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 17:54:40,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 17:54:40,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 17:54:40,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 17:54:40,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 17:54:40,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 17:54:40,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 17:54:40,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 17:54:40,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 17:54:40,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 17:54:40,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 17:54:40,230 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 17:54:40,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 17:54:40,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 17:54:40,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 17:54:40,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 17:54:40,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 17:54:40,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 17:54:40,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 17:54:40,231 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 17:54:40,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 17:54:40,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 17:54:40,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 17:54:40,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 17:54:40,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:54:40,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 17:54:40,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 17:54:40,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 17:54:40,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 17:54:40,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 17:54:40,233 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 17:54:40,233 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 17:54:40,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 17:54:40,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 17:54:40,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1848e360a16ec6531e7d7aea690ab68ac7295c6b0bdec191a41fa9ee0518b66d [2021-11-02 17:54:40,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 17:54:40,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 17:54:40,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 17:54:40,455 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 17:54:40,455 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 17:54:40,456 INFO L432 ainManager$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--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-11-02 17:54:40,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744c15800/ac059eda15be46bf91f49082ff9170c4/FLAG9019399b5 [2021-11-02 17:54:41,059 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 17:54:41,060 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--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-11-02 17:54:41,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744c15800/ac059eda15be46bf91f49082ff9170c4/FLAG9019399b5 [2021-11-02 17:54:41,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744c15800/ac059eda15be46bf91f49082ff9170c4 [2021-11-02 17:54:41,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 17:54:41,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 17:54:41,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 17:54:41,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 17:54:41,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 17:54:41,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:54:41" (1/1) ... [2021-11-02 17:54:41,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157f1e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:41, skipping insertion in model container [2021-11-02 17:54:41,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 05:54:41" (1/1) ... [2021-11-02 17:54:41,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 17:54:41,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 17:54:42,047 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--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i[196736,196749] [2021-11-02 17:54:42,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:54:42,540 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 17:54:42,651 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--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i[196736,196749] [2021-11-02 17:54:42,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 17:54:42,812 INFO L208 MainTranslator]: Completed translation [2021-11-02 17:54:42,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42 WrapperNode [2021-11-02 17:54:42,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 17:54:42,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 17:54:42,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 17:54:42,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 17:54:42,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42" (1/1) ... [2021-11-02 17:54:42,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42" (1/1) ... [2021-11-02 17:54:43,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 17:54:43,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 17:54:43,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 17:54:43,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 17:54:43,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42" (1/1) ... [2021-11-02 17:54:43,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42" (1/1) ... [2021-11-02 17:54:43,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42" (1/1) ... [2021-11-02 17:54:43,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42" (1/1) ... [2021-11-02 17:54:43,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42" (1/1) ... [2021-11-02 17:54:43,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42" (1/1) ... [2021-11-02 17:54:43,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42" (1/1) ... [2021-11-02 17:54:43,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 17:54:43,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 17:54:43,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 17:54:43,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 17:54:43,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42" (1/1) ... [2021-11-02 17:54:43,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 17:54:43,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 17:54:43,472 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 17:54:43,499 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 17:54:43,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 17:54:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 17:54:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2021-11-02 17:54:43,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2021-11-02 17:54:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-02 17:54:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-02 17:54:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_sec_feed [2021-11-02 17:54:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_sec_feed [2021-11-02 17:54:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2021-11-02 17:54:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2021-11-02 17:54:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_process_urb [2021-11-02 17:54:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_process_urb [2021-11-02 17:54:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 17:54:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 17:54:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_feed [2021-11-02 17:54:43,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_feed [2021-11-02 17:54:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 17:54:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 17:54:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2021-11-02 17:54:43,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2021-11-02 17:54:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_ts_feed [2021-11-02 17:54:43,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_ts_feed [2021-11-02 17:54:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2021-11-02 17:54:43,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2021-11-02 17:54:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 17:54:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 17:54:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2021-11-02 17:54:43,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2021-11-02 17:54:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2021-11-02 17:54:43,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2021-11-02 17:54:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-11-02 17:54:43,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-11-02 17:54:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-11-02 17:54:43,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-11-02 17:54:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 17:54:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 17:54:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 17:54:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 17:54:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 17:54:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 17:54:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-02 17:54:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-02 17:54:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_init_rc [2021-11-02 17:54:43,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_init_rc [2021-11-02 17:54:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 17:54:43,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 17:54:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2021-11-02 17:54:43,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2021-11-02 17:54:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_handle_irq [2021-11-02 17:54:43,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_handle_irq [2021-11-02 17:54:43,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 17:54:43,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 17:54:43,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 17:54:48,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 17:54:48,039 INFO L299 CfgBuilder]: Removed 1159 assume(true) statements. [2021-11-02 17:54:48,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:54:48 BoogieIcfgContainer [2021-11-02 17:54:48,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 17:54:48,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 17:54:48,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 17:54:48,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 17:54:48,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 05:54:41" (1/3) ... [2021-11-02 17:54:48,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7294fd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:54:48, skipping insertion in model container [2021-11-02 17:54:48,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 05:54:42" (2/3) ... [2021-11-02 17:54:48,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7294fd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 05:54:48, skipping insertion in model container [2021-11-02 17:54:48,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 05:54:48" (3/3) ... [2021-11-02 17:54:48,050 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-11-02 17:54:48,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 17:54:48,053 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-02 17:54:48,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 17:54:48,103 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 17:54:48,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-02 17:54:48,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 1556 states, 1500 states have (on average 1.4353333333333333) internal successors, (2153), 1508 states have internal predecessors, (2153), 31 states have call successors, (31), 19 states have call predecessors, (31), 19 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-02 17:54:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 17:54:48,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:54:48,151 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] [2021-11-02 17:54:48,152 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 17:54:48,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:54:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1596431133, now seen corresponding path program 1 times [2021-11-02 17:54:48,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:54:48,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814312924] [2021-11-02 17:54:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:54:48,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:54:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:54:48,606 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 17:54:48,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:54:48,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814312924] [2021-11-02 17:54:48,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814312924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:54:48,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:54:48,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:54:48,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083981832] [2021-11-02 17:54:48,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:54:48,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:54:48,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:54:48,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:54:48,646 INFO L87 Difference]: Start difference. First operand has 1556 states, 1500 states have (on average 1.4353333333333333) internal successors, (2153), 1508 states have internal predecessors, (2153), 31 states have call successors, (31), 19 states have call predecessors, (31), 19 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 17:54:49,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:54:50,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:54:55,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:54:59,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:55:09,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:55:09,161 INFO L93 Difference]: Finished difference Result 3108 states and 4456 transitions. [2021-11-02 17:55:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:55:09,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-11-02 17:55:09,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:55:09,189 INFO L225 Difference]: With dead ends: 3108 [2021-11-02 17:55:09,190 INFO L226 Difference]: Without dead ends: 1544 [2021-11-02 17:55:09,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:55:09,200 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 4215 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18866.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 4216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20228.10ms IncrementalHoareTripleChecker+Time [2021-11-02 17:55:09,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 4216 Unknown, 0 Unchecked, 27.41ms Time], IncrementalHoareTripleChecker [0 Valid, 4215 Invalid, 1 Unknown, 0 Unchecked, 20228.10ms Time] [2021-11-02 17:55:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-11-02 17:55:09,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2021-11-02 17:55:09,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1489 states have (on average 1.4083277367360645) internal successors, (2097), 1496 states have internal predecessors, (2097), 31 states have call successors, (31), 19 states have call predecessors, (31), 19 states have return successors, (31), 29 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-02 17:55:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2159 transitions. [2021-11-02 17:55:09,304 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2159 transitions. Word has length 25 [2021-11-02 17:55:09,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:55:09,305 INFO L470 AbstractCegarLoop]: Abstraction has 1544 states and 2159 transitions. [2021-11-02 17:55:09,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 17:55:09,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2159 transitions. [2021-11-02 17:55:09,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-02 17:55:09,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:55:09,306 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] [2021-11-02 17:55:09,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 17:55:09,307 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 17:55:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:55:09,308 INFO L85 PathProgramCache]: Analyzing trace with hash 749935913, now seen corresponding path program 1 times [2021-11-02 17:55:09,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:55:09,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653873423] [2021-11-02 17:55:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:55:09,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:55:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:55:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:55:09,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:55:09,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653873423] [2021-11-02 17:55:09,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653873423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:55:09,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:55:09,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:55:09,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792076327] [2021-11-02 17:55:09,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:55:09,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:55:09,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:55:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:55:09,523 INFO L87 Difference]: Start difference. First operand 1544 states and 2159 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 17:55:10,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:55:12,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:55:16,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:55:26,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:55:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:55:33,897 INFO L93 Difference]: Finished difference Result 4455 states and 6249 transitions. [2021-11-02 17:55:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:55:33,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-11-02 17:55:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:55:33,911 INFO L225 Difference]: With dead ends: 4455 [2021-11-02 17:55:33,911 INFO L226 Difference]: Without dead ends: 2942 [2021-11-02 17:55:33,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.29ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:55:33,917 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 1968 mSDsluCounter, 2135 mSDsCounter, 0 mSdLazyCounter, 4180 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22386.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 4184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.47ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24089.68ms IncrementalHoareTripleChecker+Time [2021-11-02 17:55:33,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 154 Invalid, 4184 Unknown, 0 Unchecked, 21.47ms Time], IncrementalHoareTripleChecker [3 Valid, 4180 Invalid, 1 Unknown, 0 Unchecked, 24089.68ms Time] [2021-11-02 17:55:33,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2021-11-02 17:55:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2941. [2021-11-02 17:55:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2941 states, 2838 states have (on average 1.4097956307258632) internal successors, (4001), 2848 states have internal predecessors, (4001), 61 states have call successors, (61), 37 states have call predecessors, (61), 37 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2021-11-02 17:55:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2941 states to 2941 states and 4123 transitions. [2021-11-02 17:55:33,980 INFO L78 Accepts]: Start accepts. Automaton has 2941 states and 4123 transitions. Word has length 26 [2021-11-02 17:55:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:55:33,981 INFO L470 AbstractCegarLoop]: Abstraction has 2941 states and 4123 transitions. [2021-11-02 17:55:33,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 17:55:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2941 states and 4123 transitions. [2021-11-02 17:55:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 17:55:33,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:55:33,982 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] [2021-11-02 17:55:33,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 17:55:33,982 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 17:55:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:55:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash 393012970, now seen corresponding path program 1 times [2021-11-02 17:55:33,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:55:33,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500886403] [2021-11-02 17:55:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:55:33,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:55:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:55:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:55:34,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:55:34,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500886403] [2021-11-02 17:55:34,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500886403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:55:34,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:55:34,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 17:55:34,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886920967] [2021-11-02 17:55:34,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:55:34,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:55:34,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:55:34,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:55:34,119 INFO L87 Difference]: Start difference. First operand 2941 states and 4123 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 17:55:35,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:55:40,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:55:58,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:55:58,064 INFO L93 Difference]: Finished difference Result 4294 states and 6006 transitions. [2021-11-02 17:55:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:55:58,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2021-11-02 17:55:58,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:55:58,081 INFO L225 Difference]: With dead ends: 4294 [2021-11-02 17:55:58,081 INFO L226 Difference]: Without dead ends: 4279 [2021-11-02 17:55:58,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:55:58,084 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 2025 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 4076 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21894.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 4079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.23ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4076 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23591.18ms IncrementalHoareTripleChecker+Time [2021-11-02 17:55:58,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2026 Valid, 150 Invalid, 4079 Unknown, 0 Unchecked, 25.23ms Time], IncrementalHoareTripleChecker [2 Valid, 4076 Invalid, 1 Unknown, 0 Unchecked, 23591.18ms Time] [2021-11-02 17:55:58,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2021-11-02 17:55:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 4263. [2021-11-02 17:55:58,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4263 states, 4114 states have (on average 1.409333981526495) internal successors, (5798), 4127 states have internal predecessors, (5798), 89 states have call successors, (89), 55 states have call predecessors, (89), 55 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2021-11-02 17:55:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4263 states to 4263 states and 5976 transitions. [2021-11-02 17:55:58,181 INFO L78 Accepts]: Start accepts. Automaton has 4263 states and 5976 transitions. Word has length 33 [2021-11-02 17:55:58,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:55:58,181 INFO L470 AbstractCegarLoop]: Abstraction has 4263 states and 5976 transitions. [2021-11-02 17:55:58,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 17:55:58,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4263 states and 5976 transitions. [2021-11-02 17:55:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 17:55:58,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:55:58,183 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] [2021-11-02 17:55:58,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 17:55:58,183 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 17:55:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:55:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash 393072552, now seen corresponding path program 1 times [2021-11-02 17:55:58,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:55:58,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143295854] [2021-11-02 17:55:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:55:58,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:55:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:55:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:55:58,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:55:58,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143295854] [2021-11-02 17:55:58,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143295854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:55:58,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:55:58,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:55:58,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648680509] [2021-11-02 17:55:58,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:55:58,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:55:58,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:55:58,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:55:58,527 INFO L87 Difference]: Start difference. First operand 4263 states and 5976 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 17:56:00,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:56:05,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:56:11,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:56:22,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:56:25,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:56:25,772 INFO L93 Difference]: Finished difference Result 12640 states and 18083 transitions. [2021-11-02 17:56:25,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:56:25,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2021-11-02 17:56:25,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:56:25,808 INFO L225 Difference]: With dead ends: 12640 [2021-11-02 17:56:25,808 INFO L226 Difference]: Without dead ends: 8408 [2021-11-02 17:56:25,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:56:25,830 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 2024 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 4178 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25200.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 4190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.82ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4178 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26879.85ms IncrementalHoareTripleChecker+Time [2021-11-02 17:56:25,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2024 Valid, 216 Invalid, 4190 Unknown, 0 Unchecked, 21.82ms Time], IncrementalHoareTripleChecker [10 Valid, 4178 Invalid, 2 Unknown, 0 Unchecked, 26879.85ms Time] [2021-11-02 17:56:25,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8408 states. [2021-11-02 17:56:26,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8408 to 8392. [2021-11-02 17:56:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8392 states, 8103 states have (on average 1.4078736270517092) internal successors, (11408), 8122 states have internal predecessors, (11408), 174 states have call successors, (174), 109 states have call predecessors, (174), 110 states have return successors, (348), 166 states have call predecessors, (348), 174 states have call successors, (348) [2021-11-02 17:56:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8392 states to 8392 states and 11930 transitions. [2021-11-02 17:56:26,115 INFO L78 Accepts]: Start accepts. Automaton has 8392 states and 11930 transitions. Word has length 33 [2021-11-02 17:56:26,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:56:26,116 INFO L470 AbstractCegarLoop]: Abstraction has 8392 states and 11930 transitions. [2021-11-02 17:56:26,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 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 17:56:26,117 INFO L276 IsEmpty]: Start isEmpty. Operand 8392 states and 11930 transitions. [2021-11-02 17:56:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 17:56:26,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:56:26,122 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] [2021-11-02 17:56:26,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 17:56:26,123 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:56:26,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:56:26,124 INFO L85 PathProgramCache]: Analyzing trace with hash -699649290, now seen corresponding path program 1 times [2021-11-02 17:56:26,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:56:26,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330764192] [2021-11-02 17:56:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:56:26,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:56:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:56:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:56:26,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:56:26,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330764192] [2021-11-02 17:56:26,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330764192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:56:26,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:56:26,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:56:26,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023177456] [2021-11-02 17:56:26,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:56:26,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:56:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:56:26,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:56:26,327 INFO L87 Difference]: Start difference. First operand 8392 states and 11930 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 17:56:27,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:56:31,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:56:34,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:56:45,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:56:52,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:56:52,305 INFO L93 Difference]: Finished difference Result 8393 states and 11931 transitions. [2021-11-02 17:56:52,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:56:52,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2021-11-02 17:56:52,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:56:52,344 INFO L225 Difference]: With dead ends: 8393 [2021-11-02 17:56:52,344 INFO L226 Difference]: Without dead ends: 8391 [2021-11-02 17:56:52,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.11ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:56:52,352 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 1996 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 4028 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23824.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 4029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4028 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25626.68ms IncrementalHoareTripleChecker+Time [2021-11-02 17:56:52,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 148 Invalid, 4029 Unknown, 0 Unchecked, 24.00ms Time], IncrementalHoareTripleChecker [0 Valid, 4028 Invalid, 1 Unknown, 0 Unchecked, 25626.68ms Time] [2021-11-02 17:56:52,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8391 states. [2021-11-02 17:56:52,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8391 to 8390. [2021-11-02 17:56:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8390 states, 8102 states have (on average 1.4078005430757838) internal successors, (11406), 8120 states have internal predecessors, (11406), 174 states have call successors, (174), 109 states have call predecessors, (174), 110 states have return successors, (348), 166 states have call predecessors, (348), 174 states have call successors, (348) [2021-11-02 17:56:52,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 11928 transitions. [2021-11-02 17:56:52,752 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 11928 transitions. Word has length 34 [2021-11-02 17:56:52,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:56:52,752 INFO L470 AbstractCegarLoop]: Abstraction has 8390 states and 11928 transitions. [2021-11-02 17:56:52,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 17:56:52,753 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 11928 transitions. [2021-11-02 17:56:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 17:56:52,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:56:52,754 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] [2021-11-02 17:56:52,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 17:56:52,754 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:56:52,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:56:52,754 INFO L85 PathProgramCache]: Analyzing trace with hash -214288014, now seen corresponding path program 1 times [2021-11-02 17:56:52,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:56:52,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606195389] [2021-11-02 17:56:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:56:52,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:56:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:56:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:56:52,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:56:52,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606195389] [2021-11-02 17:56:52,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606195389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:56:52,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:56:52,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:56:52,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462547029] [2021-11-02 17:56:52,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:56:52,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:56:52,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:56:52,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:56:52,887 INFO L87 Difference]: Start difference. First operand 8390 states and 11928 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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 17:56:54,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:56:58,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:57:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:57:15,648 INFO L93 Difference]: Finished difference Result 8391 states and 11929 transitions. [2021-11-02 17:57:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:57:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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 35 [2021-11-02 17:57:15,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:57:15,681 INFO L225 Difference]: With dead ends: 8391 [2021-11-02 17:57:15,681 INFO L226 Difference]: Without dead ends: 8389 [2021-11-02 17:57:15,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:57:15,689 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 1993 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 4026 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20882.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 4027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4026 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22473.73ms IncrementalHoareTripleChecker+Time [2021-11-02 17:57:15,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1994 Valid, 148 Invalid, 4027 Unknown, 0 Unchecked, 17.84ms Time], IncrementalHoareTripleChecker [0 Valid, 4026 Invalid, 1 Unknown, 0 Unchecked, 22473.73ms Time] [2021-11-02 17:57:15,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8389 states. [2021-11-02 17:57:15,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8389 to 8388. [2021-11-02 17:57:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8388 states, 8101 states have (on average 1.4077274410566596) internal successors, (11404), 8118 states have internal predecessors, (11404), 174 states have call successors, (174), 109 states have call predecessors, (174), 110 states have return successors, (348), 166 states have call predecessors, (348), 174 states have call successors, (348) [2021-11-02 17:57:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8388 states to 8388 states and 11926 transitions. [2021-11-02 17:57:15,882 INFO L78 Accepts]: Start accepts. Automaton has 8388 states and 11926 transitions. Word has length 35 [2021-11-02 17:57:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:57:15,883 INFO L470 AbstractCegarLoop]: Abstraction has 8388 states and 11926 transitions. [2021-11-02 17:57:15,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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 17:57:15,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8388 states and 11926 transitions. [2021-11-02 17:57:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-02 17:57:15,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:57:15,884 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] [2021-11-02 17:57:15,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 17:57:15,884 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:57:15,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:57:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1947009664, now seen corresponding path program 1 times [2021-11-02 17:57:15,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:57:15,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522587734] [2021-11-02 17:57:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:57:15,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:57:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:57:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:57:16,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:57:16,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522587734] [2021-11-02 17:57:16,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522587734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:57:16,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:57:16,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:57:16,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135010348] [2021-11-02 17:57:16,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:57:16,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:57:16,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:57:16,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:57:16,079 INFO L87 Difference]: Start difference. First operand 8388 states and 11926 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 17:57:18,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:57:22,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:57:34,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:57:35,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:57:42,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:57:42,403 INFO L93 Difference]: Finished difference Result 8389 states and 11927 transitions. [2021-11-02 17:57:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:57:42,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 36 [2021-11-02 17:57:42,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:57:42,433 INFO L225 Difference]: With dead ends: 8389 [2021-11-02 17:57:42,433 INFO L226 Difference]: Without dead ends: 8387 [2021-11-02 17:57:42,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:57:42,441 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 1990 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 4023 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24231.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1991 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 4025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.56ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4023 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25990.31ms IncrementalHoareTripleChecker+Time [2021-11-02 17:57:42,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1991 Valid, 148 Invalid, 4025 Unknown, 0 Unchecked, 21.56ms Time], IncrementalHoareTripleChecker [0 Valid, 4023 Invalid, 2 Unknown, 0 Unchecked, 25990.31ms Time] [2021-11-02 17:57:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8387 states. [2021-11-02 17:57:42,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8387 to 8386. [2021-11-02 17:57:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8386 states, 8100 states have (on average 1.4076543209876544) internal successors, (11402), 8116 states have internal predecessors, (11402), 174 states have call successors, (174), 109 states have call predecessors, (174), 110 states have return successors, (348), 166 states have call predecessors, (348), 174 states have call successors, (348) [2021-11-02 17:57:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8386 states to 8386 states and 11924 transitions. [2021-11-02 17:57:42,619 INFO L78 Accepts]: Start accepts. Automaton has 8386 states and 11924 transitions. Word has length 36 [2021-11-02 17:57:42,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:57:42,620 INFO L470 AbstractCegarLoop]: Abstraction has 8386 states and 11924 transitions. [2021-11-02 17:57:42,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 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 17:57:42,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8386 states and 11924 transitions. [2021-11-02 17:57:42,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 17:57:42,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:57:42,622 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] [2021-11-02 17:57:42,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 17:57:42,622 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:57:42,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:57:42,623 INFO L85 PathProgramCache]: Analyzing trace with hash 227760956, now seen corresponding path program 1 times [2021-11-02 17:57:42,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:57:42,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867389085] [2021-11-02 17:57:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:57:42,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:57:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:57:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:57:42,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:57:42,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867389085] [2021-11-02 17:57:42,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867389085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:57:42,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:57:42,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 17:57:42,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796234426] [2021-11-02 17:57:42,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 17:57:42,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:57:42,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 17:57:42,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:57:42,766 INFO L87 Difference]: Start difference. First operand 8386 states and 11924 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 17:57:44,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:57:49,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:57:51,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:57:53,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:58:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:58:09,125 INFO L93 Difference]: Finished difference Result 8387 states and 11925 transitions. [2021-11-02 17:58:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 17:58:09,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2021-11-02 17:58:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:58:09,155 INFO L225 Difference]: With dead ends: 8387 [2021-11-02 17:58:09,156 INFO L226 Difference]: Without dead ends: 8378 [2021-11-02 17:58:09,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 17:58:09,163 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 1987 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 4021 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24321.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 4023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4021 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26025.09ms IncrementalHoareTripleChecker+Time [2021-11-02 17:58:09,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1988 Valid, 148 Invalid, 4023 Unknown, 0 Unchecked, 18.74ms Time], IncrementalHoareTripleChecker [0 Valid, 4021 Invalid, 2 Unknown, 0 Unchecked, 26025.09ms Time] [2021-11-02 17:58:09,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8378 states. [2021-11-02 17:58:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8378 to 8377. [2021-11-02 17:58:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8377 states, 8092 states have (on average 1.407686604053386) internal successors, (11391), 8107 states have internal predecessors, (11391), 174 states have call successors, (174), 109 states have call predecessors, (174), 110 states have return successors, (348), 166 states have call predecessors, (348), 174 states have call successors, (348) [2021-11-02 17:58:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8377 states to 8377 states and 11913 transitions. [2021-11-02 17:58:09,351 INFO L78 Accepts]: Start accepts. Automaton has 8377 states and 11913 transitions. Word has length 37 [2021-11-02 17:58:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:58:09,352 INFO L470 AbstractCegarLoop]: Abstraction has 8377 states and 11913 transitions. [2021-11-02 17:58:09,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 17:58:09,352 INFO L276 IsEmpty]: Start isEmpty. Operand 8377 states and 11913 transitions. [2021-11-02 17:58:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 17:58:09,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:58:09,355 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 17:58:09,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 17:58:09,355 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 17:58:09,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:58:09,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1031632269, now seen corresponding path program 1 times [2021-11-02 17:58:09,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:58:09,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170358444] [2021-11-02 17:58:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:58:09,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:58:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:58:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-02 17:58:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:58:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 17:58:09,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:58:09,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170358444] [2021-11-02 17:58:09,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170358444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:58:09,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:58:09,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 17:58:09,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676654974] [2021-11-02 17:58:09,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 17:58:09,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:58:09,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 17:58:09,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:58:09,609 INFO L87 Difference]: Start difference. First operand 8377 states and 11913 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 17:58:11,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:58:19,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:58:35,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:58:53,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 17:58:53,747 INFO L93 Difference]: Finished difference Result 17509 states and 25292 transitions. [2021-11-02 17:58:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 17:58:53,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2021-11-02 17:58:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 17:58:53,793 INFO L225 Difference]: With dead ends: 17509 [2021-11-02 17:58:53,793 INFO L226 Difference]: Without dead ends: 9163 [2021-11-02 17:58:53,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 88.20ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:58:53,837 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 289 mSDsluCounter, 5440 mSDsCounter, 0 mSdLazyCounter, 8272 mSolverCounterSat, 64 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40963.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 8339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.05ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 8272 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43616.95ms IncrementalHoareTripleChecker+Time [2021-11-02 17:58:53,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 177 Invalid, 8339 Unknown, 0 Unchecked, 68.05ms Time], IncrementalHoareTripleChecker [64 Valid, 8272 Invalid, 3 Unknown, 0 Unchecked, 43616.95ms Time] [2021-11-02 17:58:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9163 states. [2021-11-02 17:58:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9163 to 9095. [2021-11-02 17:58:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9095 states, 8702 states have (on average 1.3957710871064124) internal successors, (12146), 8753 states have internal predecessors, (12146), 192 states have call successors, (192), 109 states have call predecessors, (192), 200 states have return successors, (551), 238 states have call predecessors, (551), 192 states have call successors, (551) [2021-11-02 17:58:54,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9095 states to 9095 states and 12889 transitions. [2021-11-02 17:58:54,065 INFO L78 Accepts]: Start accepts. Automaton has 9095 states and 12889 transitions. Word has length 83 [2021-11-02 17:58:54,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 17:58:54,065 INFO L470 AbstractCegarLoop]: Abstraction has 9095 states and 12889 transitions. [2021-11-02 17:58:54,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 17:58:54,066 INFO L276 IsEmpty]: Start isEmpty. Operand 9095 states and 12889 transitions. [2021-11-02 17:58:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 17:58:54,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 17:58:54,069 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 17:58:54,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 17:58:54,069 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 17:58:54,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 17:58:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash -679954352, now seen corresponding path program 1 times [2021-11-02 17:58:54,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 17:58:54,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071638201] [2021-11-02 17:58:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 17:58:54,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 17:58:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:58:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-02 17:58:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 17:58:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 17:58:54,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 17:58:54,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071638201] [2021-11-02 17:58:54,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071638201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 17:58:54,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 17:58:54,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 17:58:54,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881336245] [2021-11-02 17:58:54,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 17:58:54,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 17:58:54,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 17:58:54,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 17:58:54,402 INFO L87 Difference]: Start difference. First operand 9095 states and 12889 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 17:58:56,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:59:02,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:59:09,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:59:11,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:59:15,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:59:33,843 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:59:37,187 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 17:59:40,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:00:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:00:00,569 INFO L93 Difference]: Finished difference Result 20754 states and 30123 transitions. [2021-11-02 18:00:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 18:00:00,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2021-11-02 18:00:00,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:00:00,602 INFO L225 Difference]: With dead ends: 20754 [2021-11-02 18:00:00,602 INFO L226 Difference]: Without dead ends: 8780 [2021-11-02 18:00:00,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 204.86ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:00:00,645 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 4247 mSDsluCounter, 5626 mSDsCounter, 0 mSdLazyCounter, 11246 mSolverCounterSat, 357 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61412.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4265 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 11606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 92.77ms SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 11246 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65340.72ms IncrementalHoareTripleChecker+Time [2021-11-02 18:00:00,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4265 Valid, 117 Invalid, 11606 Unknown, 0 Unchecked, 92.77ms Time], IncrementalHoareTripleChecker [357 Valid, 11246 Invalid, 3 Unknown, 0 Unchecked, 65340.72ms Time] [2021-11-02 18:00:00,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8780 states. [2021-11-02 18:00:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8780 to 8720. [2021-11-02 18:00:00,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8720 states, 8327 states have (on average 1.3360153716824787) internal successors, (11125), 8378 states have internal predecessors, (11125), 192 states have call successors, (192), 109 states have call predecessors, (192), 200 states have return successors, (551), 238 states have call predecessors, (551), 192 states have call successors, (551) [2021-11-02 18:00:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8720 states to 8720 states and 11868 transitions. [2021-11-02 18:00:00,860 INFO L78 Accepts]: Start accepts. Automaton has 8720 states and 11868 transitions. Word has length 92 [2021-11-02 18:00:00,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:00:00,861 INFO L470 AbstractCegarLoop]: Abstraction has 8720 states and 11868 transitions. [2021-11-02 18:00:00,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:00:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 8720 states and 11868 transitions. [2021-11-02 18:00:00,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 18:00:00,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:00:00,863 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 18:00:00,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 18:00:00,864 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 18:00:00,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:00:00,865 INFO L85 PathProgramCache]: Analyzing trace with hash -647940848, now seen corresponding path program 1 times [2021-11-02 18:00:00,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:00:00,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282882057] [2021-11-02 18:00:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:00:00,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:00:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:00:01,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-02 18:00:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:00:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:00:01,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:00:01,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282882057] [2021-11-02 18:00:01,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282882057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:00:01,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:00:01,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:00:01,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923135310] [2021-11-02 18:00:01,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:00:01,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:00:01,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:00:01,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:00:01,114 INFO L87 Difference]: Start difference. First operand 8720 states and 11868 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:00:02,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:00:05,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:00:07,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:00:09,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:00:18,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:00:29,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:00:31,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:00:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:00:57,762 INFO L93 Difference]: Finished difference Result 20415 states and 28294 transitions. [2021-11-02 18:00:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 18:00:57,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2021-11-02 18:00:57,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:00:57,809 INFO L225 Difference]: With dead ends: 20415 [2021-11-02 18:00:57,809 INFO L226 Difference]: Without dead ends: 11726 [2021-11-02 18:00:57,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.71ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 18:00:57,838 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 851 mSDsluCounter, 5810 mSDsCounter, 0 mSdLazyCounter, 9182 mSolverCounterSat, 68 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52306.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 9254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.61ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 9182 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56082.84ms IncrementalHoareTripleChecker+Time [2021-11-02 18:00:57,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 187 Invalid, 9254 Unknown, 0 Unchecked, 61.61ms Time], IncrementalHoareTripleChecker [68 Valid, 9182 Invalid, 4 Unknown, 0 Unchecked, 56082.84ms Time] [2021-11-02 18:00:57,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11726 states. [2021-11-02 18:00:58,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11726 to 8720. [2021-11-02 18:00:58,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8720 states, 8327 states have (on average 1.334574276450102) internal successors, (11113), 8378 states have internal predecessors, (11113), 192 states have call successors, (192), 109 states have call predecessors, (192), 200 states have return successors, (551), 238 states have call predecessors, (551), 192 states have call successors, (551) [2021-11-02 18:00:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8720 states to 8720 states and 11856 transitions. [2021-11-02 18:00:58,153 INFO L78 Accepts]: Start accepts. Automaton has 8720 states and 11856 transitions. Word has length 92 [2021-11-02 18:00:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:00:58,153 INFO L470 AbstractCegarLoop]: Abstraction has 8720 states and 11856 transitions. [2021-11-02 18:00:58,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:00:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 8720 states and 11856 transitions. [2021-11-02 18:00:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 18:00:58,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:00:58,156 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 18:00:58,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 18:00:58,157 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 18:00:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:00:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash 84660165, now seen corresponding path program 1 times [2021-11-02 18:00:58,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:00:58,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147225924] [2021-11-02 18:00:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:00:58,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:00:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:00:58,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-02 18:00:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:00:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:00:58,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:00:58,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147225924] [2021-11-02 18:00:58,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147225924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:00:58,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:00:58,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 18:00:58,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685392898] [2021-11-02 18:00:58,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 18:00:58,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:00:58,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 18:00:58,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 18:00:58,488 INFO L87 Difference]: Start difference. First operand 8720 states and 11856 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:01:00,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:01:02,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:01:04,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:01:10,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:01:17,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:01:21,574 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:01:40,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:01:43,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:01:45,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:01:49,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:02:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:02:05,748 INFO L93 Difference]: Finished difference Result 20014 states and 27887 transitions. [2021-11-02 18:02:05,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 18:02:05,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2021-11-02 18:02:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:02:05,775 INFO L225 Difference]: With dead ends: 20014 [2021-11-02 18:02:05,775 INFO L226 Difference]: Without dead ends: 8337 [2021-11-02 18:02:05,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 179.53ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 18:02:05,803 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 3758 mSDsluCounter, 5616 mSDsCounter, 0 mSdLazyCounter, 10468 mSolverCounterSat, 199 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62335.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 10671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.84ms SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 10468 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66448.76ms IncrementalHoareTripleChecker+Time [2021-11-02 18:02:05,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3772 Valid, 184 Invalid, 10671 Unknown, 0 Unchecked, 75.84ms Time], IncrementalHoareTripleChecker [199 Valid, 10468 Invalid, 4 Unknown, 0 Unchecked, 66448.76ms Time] [2021-11-02 18:02:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8337 states. [2021-11-02 18:02:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8337 to 8219. [2021-11-02 18:02:06,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8219 states, 7842 states have (on average 1.3348635552155061) internal successors, (10468), 7895 states have internal predecessors, (10468), 185 states have call successors, (185), 106 states have call predecessors, (185), 191 states have return successors, (536), 223 states have call predecessors, (536), 185 states have call successors, (536) [2021-11-02 18:02:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8219 states to 8219 states and 11189 transitions. [2021-11-02 18:02:06,111 INFO L78 Accepts]: Start accepts. Automaton has 8219 states and 11189 transitions. Word has length 92 [2021-11-02 18:02:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:02:06,114 INFO L470 AbstractCegarLoop]: Abstraction has 8219 states and 11189 transitions. [2021-11-02 18:02:06,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:02:06,114 INFO L276 IsEmpty]: Start isEmpty. Operand 8219 states and 11189 transitions. [2021-11-02 18:02:06,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-02 18:02:06,121 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:02:06,121 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 18:02:06,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 18:02:06,121 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 18:02:06,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:02:06,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1393243720, now seen corresponding path program 1 times [2021-11-02 18:02:06,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:02:06,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289724665] [2021-11-02 18:02:06,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:02:06,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:02:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:02:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-02 18:02:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:02:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:02:06,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:02:06,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289724665] [2021-11-02 18:02:06,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289724665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:02:06,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:02:06,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:02:06,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813220574] [2021-11-02 18:02:06,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:02:06,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:02:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:02:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:02:06,358 INFO L87 Difference]: Start difference. First operand 8219 states and 11189 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:02:07,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:02:09,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:02:11,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:02:15,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:02:18,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:02:34,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:02:34,676 INFO L93 Difference]: Finished difference Result 16536 states and 22924 transitions. [2021-11-02 18:02:34,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:02:34,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2021-11-02 18:02:34,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:02:34,700 INFO L225 Difference]: With dead ends: 16536 [2021-11-02 18:02:34,701 INFO L226 Difference]: Without dead ends: 8348 [2021-11-02 18:02:34,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.35ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:02:34,722 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 184 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 5262 mSolverCounterSat, 45 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26060.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 5309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.26ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5262 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27989.75ms IncrementalHoareTripleChecker+Time [2021-11-02 18:02:34,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 107 Invalid, 5309 Unknown, 0 Unchecked, 23.26ms Time], IncrementalHoareTripleChecker [45 Valid, 5262 Invalid, 2 Unknown, 0 Unchecked, 27989.75ms Time] [2021-11-02 18:02:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8348 states. [2021-11-02 18:02:34,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8348 to 8225. [2021-11-02 18:02:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8225 states, 7848 states have (on average 1.3346075433231397) internal successors, (10474), 7901 states have internal predecessors, (10474), 185 states have call successors, (185), 106 states have call predecessors, (185), 191 states have return successors, (536), 223 states have call predecessors, (536), 185 states have call successors, (536) [2021-11-02 18:02:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8225 states to 8225 states and 11195 transitions. [2021-11-02 18:02:34,960 INFO L78 Accepts]: Start accepts. Automaton has 8225 states and 11195 transitions. Word has length 120 [2021-11-02 18:02:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:02:34,960 INFO L470 AbstractCegarLoop]: Abstraction has 8225 states and 11195 transitions. [2021-11-02 18:02:34,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:02:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 8225 states and 11195 transitions. [2021-11-02 18:02:34,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-02 18:02:34,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:02:34,965 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 18:02:34,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 18:02:34,966 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 18:02:34,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:02:34,966 INFO L85 PathProgramCache]: Analyzing trace with hash 460476387, now seen corresponding path program 1 times [2021-11-02 18:02:34,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:02:34,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63006196] [2021-11-02 18:02:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:02:34,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:02:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:02:35,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-02 18:02:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:02:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:02:35,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:02:35,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63006196] [2021-11-02 18:02:35,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63006196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:02:35,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:02:35,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:02:35,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881292552] [2021-11-02 18:02:35,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:02:35,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:02:35,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:02:35,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:02:35,186 INFO L87 Difference]: Start difference. First operand 8225 states and 11195 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:02:36,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:02:38,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:02:40,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:02:45,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:03:06,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:03:06,213 INFO L93 Difference]: Finished difference Result 16536 states and 22918 transitions. [2021-11-02 18:03:06,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:03:06,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2021-11-02 18:03:06,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:03:06,241 INFO L225 Difference]: With dead ends: 16536 [2021-11-02 18:03:06,241 INFO L226 Difference]: Without dead ends: 8342 [2021-11-02 18:03:06,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.23ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:03:06,265 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 181 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 5261 mSolverCounterSat, 45 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28686.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 5309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.18ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5261 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30656.31ms IncrementalHoareTripleChecker+Time [2021-11-02 18:03:06,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 104 Invalid, 5309 Unknown, 0 Unchecked, 28.18ms Time], IncrementalHoareTripleChecker [45 Valid, 5261 Invalid, 3 Unknown, 0 Unchecked, 30656.31ms Time] [2021-11-02 18:03:06,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8342 states. [2021-11-02 18:03:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8342 to 8231. [2021-11-02 18:03:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8231 states, 7854 states have (on average 1.3343519225872167) internal successors, (10480), 7907 states have internal predecessors, (10480), 185 states have call successors, (185), 106 states have call predecessors, (185), 191 states have return successors, (536), 223 states have call predecessors, (536), 185 states have call successors, (536) [2021-11-02 18:03:06,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 11201 transitions. [2021-11-02 18:03:06,467 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 11201 transitions. Word has length 123 [2021-11-02 18:03:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:03:06,467 INFO L470 AbstractCegarLoop]: Abstraction has 8231 states and 11201 transitions. [2021-11-02 18:03:06,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 3 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:03:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 11201 transitions. [2021-11-02 18:03:06,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-02 18:03:06,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:03:06,474 INFO L514 BasicCegarLoop]: trace histogram [3, 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 18:03:06,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 18:03:06,475 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 18:03:06,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:03:06,475 INFO L85 PathProgramCache]: Analyzing trace with hash 251661759, now seen corresponding path program 1 times [2021-11-02 18:03:06,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:03:06,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319755476] [2021-11-02 18:03:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:03:06,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:03:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:03:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-02 18:03:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:03:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 18:03:06,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:03:06,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319755476] [2021-11-02 18:03:06,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319755476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:03:06,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:03:06,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 18:03:06,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753104304] [2021-11-02 18:03:06,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 18:03:06,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:03:06,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 18:03:06,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 18:03:06,758 INFO L87 Difference]: Start difference. First operand 8231 states and 11201 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:03:08,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:03:15,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:03:21,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:03:31,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:03:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:03:54,027 INFO L93 Difference]: Finished difference Result 18882 states and 26225 transitions. [2021-11-02 18:03:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 18:03:54,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2021-11-02 18:03:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:03:54,057 INFO L225 Difference]: With dead ends: 18882 [2021-11-02 18:03:54,057 INFO L226 Difference]: Without dead ends: 10682 [2021-11-02 18:03:54,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 125.89ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-02 18:03:54,076 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 1774 mSDsluCounter, 6225 mSDsCounter, 0 mSdLazyCounter, 9370 mSolverCounterSat, 58 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43784.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 9430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.07ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 9370 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46725.53ms IncrementalHoareTripleChecker+Time [2021-11-02 18:03:54,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1777 Valid, 234 Invalid, 9430 Unknown, 0 Unchecked, 55.07ms Time], IncrementalHoareTripleChecker [58 Valid, 9370 Invalid, 2 Unknown, 0 Unchecked, 46725.53ms Time] [2021-11-02 18:03:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10682 states. [2021-11-02 18:03:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10682 to 8249. [2021-11-02 18:03:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8249 states, 7872 states have (on average 1.3335873983739837) internal successors, (10498), 7925 states have internal predecessors, (10498), 185 states have call successors, (185), 106 states have call predecessors, (185), 191 states have return successors, (536), 223 states have call predecessors, (536), 185 states have call successors, (536) [2021-11-02 18:03:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8249 states to 8249 states and 11219 transitions. [2021-11-02 18:03:54,339 INFO L78 Accepts]: Start accepts. Automaton has 8249 states and 11219 transitions. Word has length 125 [2021-11-02 18:03:54,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:03:54,340 INFO L470 AbstractCegarLoop]: Abstraction has 8249 states and 11219 transitions. [2021-11-02 18:03:54,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:03:54,340 INFO L276 IsEmpty]: Start isEmpty. Operand 8249 states and 11219 transitions. [2021-11-02 18:03:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-02 18:03:54,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:03:54,346 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:03:54,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 18:03:54,347 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 18:03:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:03:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash -360768551, now seen corresponding path program 1 times [2021-11-02 18:03:54,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:03:54,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081293831] [2021-11-02 18:03:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:03:54,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:03:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:03:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-02 18:03:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:03:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 18:03:54,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:03:54,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081293831] [2021-11-02 18:03:54,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081293831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:03:54,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:03:54,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:03:54,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604101681] [2021-11-02 18:03:54,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:03:54,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:03:54,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:03:54,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:03:54,555 INFO L87 Difference]: Start difference. First operand 8249 states and 11219 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:03:56,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:03:58,248 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:04:00,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:04:06,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:04:11,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:04:17,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:04:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:04:33,168 INFO L93 Difference]: Finished difference Result 16620 states and 23014 transitions. [2021-11-02 18:04:33,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:04:33,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 137 [2021-11-02 18:04:33,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:04:33,262 INFO L225 Difference]: With dead ends: 16620 [2021-11-02 18:04:33,262 INFO L226 Difference]: Without dead ends: 8402 [2021-11-02 18:04:33,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.36ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:04:33,278 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 188 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 5260 mSolverCounterSat, 47 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35640.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 5310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.18ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 5260 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38167.98ms IncrementalHoareTripleChecker+Time [2021-11-02 18:04:33,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 104 Invalid, 5310 Unknown, 0 Unchecked, 37.18ms Time], IncrementalHoareTripleChecker [47 Valid, 5260 Invalid, 3 Unknown, 0 Unchecked, 38167.98ms Time] [2021-11-02 18:04:33,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8402 states. [2021-11-02 18:04:33,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8402 to 8261. [2021-11-02 18:04:33,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8261 states, 7884 states have (on average 1.3330796549974633) internal successors, (10510), 7937 states have internal predecessors, (10510), 185 states have call successors, (185), 106 states have call predecessors, (185), 191 states have return successors, (536), 223 states have call predecessors, (536), 185 states have call successors, (536) [2021-11-02 18:04:33,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8261 states to 8261 states and 11231 transitions. [2021-11-02 18:04:33,489 INFO L78 Accepts]: Start accepts. Automaton has 8261 states and 11231 transitions. Word has length 137 [2021-11-02 18:04:33,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:04:33,489 INFO L470 AbstractCegarLoop]: Abstraction has 8261 states and 11231 transitions. [2021-11-02 18:04:33,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:04:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 8261 states and 11231 transitions. [2021-11-02 18:04:33,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-02 18:04:33,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:04:33,497 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:04:33,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 18:04:33,497 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 18:04:33,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:04:33,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1766722050, now seen corresponding path program 1 times [2021-11-02 18:04:33,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:04:33,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147800150] [2021-11-02 18:04:33,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:04:33,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:04:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:04:33,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-02 18:04:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:04:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:04:33,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:04:33,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147800150] [2021-11-02 18:04:33,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147800150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 18:04:33,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 18:04:33,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 18:04:33,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075410841] [2021-11-02 18:04:33,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 18:04:33,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:04:33,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 18:04:33,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:04:33,770 INFO L87 Difference]: Start difference. First operand 8261 states and 11231 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:04:35,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:04:37,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:04:40,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:04:45,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:04:50,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:04:52,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:05:16,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:05:16,021 INFO L93 Difference]: Finished difference Result 16602 states and 22984 transitions. [2021-11-02 18:05:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 18:05:16,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-11-02 18:05:16,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:05:16,051 INFO L225 Difference]: With dead ends: 16602 [2021-11-02 18:05:16,051 INFO L226 Difference]: Without dead ends: 8372 [2021-11-02 18:05:16,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.82ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 18:05:16,075 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 180 mSDsluCounter, 2861 mSDsCounter, 0 mSdLazyCounter, 5260 mSolverCounterSat, 45 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39020.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 5309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.42ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 5260 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41758.05ms IncrementalHoareTripleChecker+Time [2021-11-02 18:05:16,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 104 Invalid, 5309 Unknown, 0 Unchecked, 42.42ms Time], IncrementalHoareTripleChecker [45 Valid, 5260 Invalid, 4 Unknown, 0 Unchecked, 41758.05ms Time] [2021-11-02 18:05:16,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8372 states. [2021-11-02 18:05:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8372 to 8267. [2021-11-02 18:05:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8267 states, 7890 states have (on average 1.3328263624841572) internal successors, (10516), 7943 states have internal predecessors, (10516), 185 states have call successors, (185), 106 states have call predecessors, (185), 191 states have return successors, (536), 223 states have call predecessors, (536), 185 states have call successors, (536) [2021-11-02 18:05:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8267 states to 8267 states and 11237 transitions. [2021-11-02 18:05:16,289 INFO L78 Accepts]: Start accepts. Automaton has 8267 states and 11237 transitions. Word has length 141 [2021-11-02 18:05:16,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:05:16,290 INFO L470 AbstractCegarLoop]: Abstraction has 8267 states and 11237 transitions. [2021-11-02 18:05:16,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:05:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 8267 states and 11237 transitions. [2021-11-02 18:05:16,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-02 18:05:16,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:05:16,298 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:05:16,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 18:05:16,298 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 18:05:16,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:05:16,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1377699604, now seen corresponding path program 1 times [2021-11-02 18:05:16,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:05:16,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619842460] [2021-11-02 18:05:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:05:16,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:05:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:05:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-02 18:05:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:05:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:05:16,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:05:16,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619842460] [2021-11-02 18:05:16,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619842460] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:05:16,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267532749] [2021-11-02 18:05:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:05:16,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:05:16,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:05:16,616 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 18:05:16,617 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 18:05:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:05:17,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 18:05:17,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:05:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:05:17,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:05:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:05:18,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267532749] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:05:18,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:05:18,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2021-11-02 18:05:18,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084308120] [2021-11-02 18:05:18,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 18:05:18,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:05:18,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 18:05:18,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-02 18:05:18,339 INFO L87 Difference]: Start difference. First operand 8267 states and 11237 transitions. Second operand has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 8 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:05:20,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:05:27,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:05:34,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:05:35,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:05:37,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:05:39,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:05:40,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:05:44,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:06:19,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:06:19,435 INFO L93 Difference]: Finished difference Result 16626 states and 23020 transitions. [2021-11-02 18:06:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 18:06:19,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 8 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2021-11-02 18:06:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:06:19,458 INFO L225 Difference]: With dead ends: 16626 [2021-11-02 18:06:19,459 INFO L226 Difference]: Without dead ends: 8390 [2021-11-02 18:06:19,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 214.21ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-02 18:06:19,477 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 180 mSDsluCounter, 8179 mSDsCounter, 0 mSdLazyCounter, 10614 mSolverCounterSat, 48 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57115.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 10664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 64.24ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 10614 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60531.16ms IncrementalHoareTripleChecker+Time [2021-11-02 18:06:19,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 254 Invalid, 10664 Unknown, 0 Unchecked, 64.24ms Time], IncrementalHoareTripleChecker [48 Valid, 10614 Invalid, 2 Unknown, 0 Unchecked, 60531.16ms Time] [2021-11-02 18:06:19,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8390 states. [2021-11-02 18:06:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8390 to 8285. [2021-11-02 18:06:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8285 states, 7908 states have (on average 1.3320687910976226) internal successors, (10534), 7961 states have internal predecessors, (10534), 185 states have call successors, (185), 106 states have call predecessors, (185), 191 states have return successors, (536), 223 states have call predecessors, (536), 185 states have call successors, (536) [2021-11-02 18:06:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8285 states to 8285 states and 11255 transitions. [2021-11-02 18:06:19,668 INFO L78 Accepts]: Start accepts. Automaton has 8285 states and 11255 transitions. Word has length 142 [2021-11-02 18:06:19,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:06:19,668 INFO L470 AbstractCegarLoop]: Abstraction has 8285 states and 11255 transitions. [2021-11-02 18:06:19,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 8 states have internal predecessors, (146), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:06:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 8285 states and 11255 transitions. [2021-11-02 18:06:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-02 18:06:19,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:06:19,675 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:06:19,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 18:06:19,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 18:06:19,891 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 18:06:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:06:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash 468565634, now seen corresponding path program 2 times [2021-11-02 18:06:19,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:06:19,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248682733] [2021-11-02 18:06:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:06:19,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:06:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:06:20,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-02 18:06:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:06:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:06:20,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:06:20,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248682733] [2021-11-02 18:06:20,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248682733] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:06:20,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458103037] [2021-11-02 18:06:20,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 18:06:20,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:06:20,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:06:20,258 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 18:06:20,259 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 18:07:00,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 18:07:00,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 18:07:00,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 18:07:00,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 18:07:00,877 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:07:00,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 18:07:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:07:01,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458103037] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 18:07:01,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-02 18:07:01,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2021-11-02 18:07:01,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824692040] [2021-11-02 18:07:01,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 18:07:01,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 18:07:01,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 18:07:01,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=178, Unknown=0, NotChecked=0, Total=306 [2021-11-02 18:07:01,265 INFO L87 Difference]: Start difference. First operand 8285 states and 11255 transitions. Second operand has 18 states, 18 states have (on average 8.61111111111111) internal successors, (155), 17 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:07:02,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:07:04,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:07:07,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:07:09,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:07:11,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:07:13,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:07:15,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:07:21,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:07:31,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:07:43,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 18:08:25,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 18:08:25,103 INFO L93 Difference]: Finished difference Result 16680 states and 23092 transitions. [2021-11-02 18:08:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 18:08:25,104 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.61111111111111) internal successors, (155), 17 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-11-02 18:08:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 18:08:25,140 INFO L225 Difference]: With dead ends: 16680 [2021-11-02 18:08:25,140 INFO L226 Difference]: Without dead ends: 8426 [2021-11-02 18:08:25,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 441.09ms TimeCoverageRelationStatistics Valid=128, Invalid=178, Unknown=0, NotChecked=0, Total=306 [2021-11-02 18:08:25,167 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 180 mSDsluCounter, 9963 mSDsCounter, 0 mSdLazyCounter, 12403 mSolverCounterSat, 53 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78073.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 12464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 78.08ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 12403 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83232.05ms IncrementalHoareTripleChecker+Time [2021-11-02 18:08:25,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 311 Invalid, 12464 Unknown, 0 Unchecked, 78.08ms Time], IncrementalHoareTripleChecker [53 Valid, 12403 Invalid, 8 Unknown, 0 Unchecked, 83232.05ms Time] [2021-11-02 18:08:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8426 states. [2021-11-02 18:08:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8426 to 8321. [2021-11-02 18:08:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8321 states, 7944 states have (on average 1.330563947633434) internal successors, (10570), 7997 states have internal predecessors, (10570), 185 states have call successors, (185), 106 states have call predecessors, (185), 191 states have return successors, (536), 223 states have call predecessors, (536), 185 states have call successors, (536) [2021-11-02 18:08:25,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8321 states to 8321 states and 11291 transitions. [2021-11-02 18:08:25,439 INFO L78 Accepts]: Start accepts. Automaton has 8321 states and 11291 transitions. Word has length 145 [2021-11-02 18:08:25,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 18:08:25,439 INFO L470 AbstractCegarLoop]: Abstraction has 8321 states and 11291 transitions. [2021-11-02 18:08:25,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.61111111111111) internal successors, (155), 17 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 18:08:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 8321 states and 11291 transitions. [2021-11-02 18:08:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-02 18:08:25,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 18:08:25,447 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 18:08:25,511 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 18:08:25,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:08:25,675 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 18:08:25,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 18:08:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1626903874, now seen corresponding path program 3 times [2021-11-02 18:08:25,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 18:08:25,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788069299] [2021-11-02 18:08:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 18:08:25,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 18:08:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:08:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-02 18:08:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 18:08:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 7 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 18:08:26,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 18:08:26,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788069299] [2021-11-02 18:08:26,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788069299] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 18:08:26,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363200531] [2021-11-02 18:08:26,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 18:08:26,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 18:08:26,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 18:08:26,390 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 18:08:26,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Killed by 15