./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--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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--isdn--hisax--hisax_st5481.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 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:40:28,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:40:28,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:40:29,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:40:29,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:40:29,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:40:29,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:40:29,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:40:29,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:40:29,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:40:29,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:40:29,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:40:29,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:40:29,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:40:29,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:40:29,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:40:29,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:40:29,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:40:29,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:40:29,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:40:29,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:40:29,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:40:29,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:40:29,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:40:29,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:40:29,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:40:29,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:40:29,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:40:29,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:40:29,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:40:29,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:40:29,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:40:29,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:40:29,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:40:29,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:40:29,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:40:29,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:40:29,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:40:29,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:40:29,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:40:29,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:40:29,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:40:29,078 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:40:29,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:40:29,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:40:29,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:40:29,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:40:29,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:40:29,080 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:40:29,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:40:29,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:40:29,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:40:29,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:40:29,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:40:29,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:40:29,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:40:29,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:40:29,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:40:29,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:40:29,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:40:29,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:40:29,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:40:29,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:40:29,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:40:29,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:40:29,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:40:29,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:40:29,084 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:40:29,084 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:40:29,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:40:29,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:40:29,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd [2021-11-07 12:40:29,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:40:29,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:40:29,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:40:29,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:40:29,283 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:40:29,284 INFO L432 ainManager$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--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-07 12:40:29,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47eef1bfb/4f9540090ab6401ab9c1a2c9419451ef/FLAG85941a875 [2021-11-07 12:40:29,940 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:40:29,941 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--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-07 12:40:29,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47eef1bfb/4f9540090ab6401ab9c1a2c9419451ef/FLAG85941a875 [2021-11-07 12:40:30,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47eef1bfb/4f9540090ab6401ab9c1a2c9419451ef [2021-11-07 12:40:30,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:40:30,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:40:30,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:40:30,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:40:30,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:40:30,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:40:30" (1/1) ... [2021-11-07 12:40:30,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60475544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:30, skipping insertion in model container [2021-11-07 12:40:30,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:40:30" (1/1) ... [2021-11-07 12:40:30,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:40:30,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:40:30,898 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--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-11-07 12:40:31,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:40:31,523 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:40:31,622 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--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-11-07 12:40:31,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:40:31,845 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:40:31,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31 WrapperNode [2021-11-07 12:40:31,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:40:31,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:40:31,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:40:31,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:40:31,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2021-11-07 12:40:31,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2021-11-07 12:40:32,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:40:32,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:40:32,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:40:32,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:40:32,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2021-11-07 12:40:32,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2021-11-07 12:40:32,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2021-11-07 12:40:32,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2021-11-07 12:40:32,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2021-11-07 12:40:32,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2021-11-07 12:40:32,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2021-11-07 12:40:32,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:40:32,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:40:32,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:40:32,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:40:32,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (1/1) ... [2021-11-07 12:40:32,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:40:32,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:40:32,447 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) [2021-11-07 12:40:32,454 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 [2021-11-07 12:40:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_complete [2021-11-07 12:40:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_complete [2021-11-07 12:40:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure dout_reset [2021-11-07 12:40:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_reset [2021-11-07 12:40:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:40:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:40:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 12:40:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 12:40:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_st5481 [2021-11-07 12:40:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_st5481 [2021-11-07 12:40:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure usb_next_ctrl_msg [2021-11-07 12:40:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_next_ctrl_msg [2021-11-07 12:40:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out [2021-11-07 12:40:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out [2021-11-07 12:40:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_device_ctrl_msg [2021-11-07 12:40:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_device_ctrl_msg [2021-11-07 12:40:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure led_blink [2021-11-07 12:40:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure led_blink [2021-11-07 12:40:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_in_mode [2021-11-07 12:40:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_in_mode [2021-11-07 12:40:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_start_rcv [2021-11-07 12:40:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_start_rcv [2021-11-07 12:40:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_23 [2021-11-07 12:40:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_23 [2021-11-07 12:40:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2021-11-07 12:40:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2021-11-07 12:40:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-07 12:40:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-07 12:40:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_25 [2021-11-07 12:40:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_25 [2021-11-07 12:40:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:40:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-07 12:40:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-07 12:40:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2021-11-07 12:40:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2021-11-07 12:40:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure ph_connect [2021-11-07 12:40:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_connect [2021-11-07 12:40:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_mode [2021-11-07 12:40:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_mode [2021-11-07 12:40:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure B_L1L2 [2021-11-07 12:40:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure B_L1L2 [2021-11-07 12:40:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-07 12:40:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-07 12:40:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2021-11-07 12:40:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2021-11-07 12:40:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:40:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-07 12:40:32,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-07 12:40:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure ph_disconnect [2021-11-07 12:40:32,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_disconnect [2021-11-07 12:40:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:40:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f6 [2021-11-07 12:40:32,483 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f6 [2021-11-07 12:40:32,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:40:32,483 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f7 [2021-11-07 12:40:32,483 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f7 [2021-11-07 12:40:32,483 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f8 [2021-11-07 12:40:32,483 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f8 [2021-11-07 12:40:32,483 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_b_l2l1 [2021-11-07 12:40:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_b_l2l1 [2021-11-07 12:40:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f3 [2021-11-07 12:40:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f3 [2021-11-07 12:40:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure dout_short_fifo [2021-11-07 12:40:32,485 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_short_fifo [2021-11-07 12:40:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure usb_in_complete [2021-11-07 12:40:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_in_complete [2021-11-07 12:40:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out_complete [2021-11-07 12:40:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out_complete [2021-11-07 12:40:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_start_xfer [2021-11-07 12:40:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_start_xfer [2021-11-07 12:40:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_pipe_reset [2021-11-07 12:40:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_pipe_reset [2021-11-07 12:40:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:40:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure dout_check_busy [2021-11-07 12:40:32,487 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_check_busy [2021-11-07 12:40:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:40:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:40:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out [2021-11-07 12:40:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out [2021-11-07 12:40:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_den [2021-11-07 12:40:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_den [2021-11-07 12:40:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure dout_stop [2021-11-07 12:40:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_stop [2021-11-07 12:40:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure dout_underrun [2021-11-07 12:40:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_underrun [2021-11-07 12:40:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:40:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2021-11-07 12:40:32,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2021-11-07 12:40:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:40:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_msg [2021-11-07 12:40:32,489 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_msg [2021-11-07 12:40:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:40:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:40:32,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:40:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure l1_activate [2021-11-07 12:40:32,490 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_activate [2021-11-07 12:40:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure l1_timer3 [2021-11-07 12:40:32,490 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_timer3 [2021-11-07 12:40:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_stop [2021-11-07 12:40:32,491 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_stop [2021-11-07 12:40:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_enable_fifo [2021-11-07 12:40:32,491 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_enable_fifo [2021-11-07 12:40:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out_complete [2021-11-07 12:40:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out_complete [2021-11-07 12:40:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure usb_int_complete [2021-11-07 12:40:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_int_complete [2021-11-07 12:40:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure D_L1L2 [2021-11-07 12:40:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure D_L1L2 [2021-11-07 12:40:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure dout_complete [2021-11-07 12:40:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_complete [2021-11-07 12:40:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_ph_command [2021-11-07 12:40:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_ph_command [2021-11-07 12:40:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure dout_start_xmit [2021-11-07 12:40:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_start_xmit [2021-11-07 12:40:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:40:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:40:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:40:53,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:40:53,665 INFO L299 CfgBuilder]: Removed 929 assume(true) statements. [2021-11-07 12:40:53,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:40:53 BoogieIcfgContainer [2021-11-07 12:40:53,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:40:53,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:40:53,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:40:53,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:40:53,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:40:30" (1/3) ... [2021-11-07 12:40:53,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4ec4df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:40:53, skipping insertion in model container [2021-11-07 12:40:53,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:31" (2/3) ... [2021-11-07 12:40:53,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4ec4df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:40:53, skipping insertion in model container [2021-11-07 12:40:53,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:40:53" (3/3) ... [2021-11-07 12:40:53,673 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-07 12:40:53,677 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:40:53,677 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 12:40:53,714 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:40:53,719 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 [2021-11-07 12:40:53,719 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 12:40:53,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 1442 states, 1277 states have (on average 1.4064212999216914) internal successors, (1796), 1317 states have internal predecessors, (1796), 108 states have call successors, (108), 51 states have call predecessors, (108), 51 states have return successors, (108), 87 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-07 12:40:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 12:40:53,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:40:53,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:40:53,764 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)] === [2021-11-07 12:40:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:40:53,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1160909501, now seen corresponding path program 1 times [2021-11-07 12:40:53,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:40:53,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464515202] [2021-11-07 12:40:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:40:53,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:40:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:40:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:40:54,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:40:54,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464515202] [2021-11-07 12:40:54,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464515202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:40:54,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:40:54,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:40:54,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067828582] [2021-11-07 12:40:54,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:40:54,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:40:54,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:40:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:40:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:40:54,390 INFO L87 Difference]: Start difference. First operand has 1442 states, 1277 states have (on average 1.4064212999216914) internal successors, (1796), 1317 states have internal predecessors, (1796), 108 states have call successors, (108), 51 states have call predecessors, (108), 51 states have return successors, (108), 87 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-07 12:40:56,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:40:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:40:56,840 INFO L93 Difference]: Finished difference Result 4262 states and 6171 transitions. [2021-11-07 12:40:56,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:40:56,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-11-07 12:40:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:40:56,870 INFO L225 Difference]: With dead ends: 4262 [2021-11-07 12:40:56,871 INFO L226 Difference]: Without dead ends: 2807 [2021-11-07 12:40:56,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:40:56,883 INFO L933 BasicCegarLoop]: 2074 mSDtfsCounter, 1926 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2103.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1926 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.64ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2259.67ms IncrementalHoareTripleChecker+Time [2021-11-07 12:40:56,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1926 Valid, 4003 Invalid, 16 Unknown, 0 Unchecked, 18.64ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2259.67ms Time] [2021-11-07 12:40:56,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2021-11-07 12:40:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2807. [2021-11-07 12:40:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2484 states have (on average 1.3719806763285025) internal successors, (3408), 2558 states have internal predecessors, (3408), 216 states have call successors, (216), 102 states have call predecessors, (216), 102 states have return successors, (216), 174 states have call predecessors, (216), 216 states have call successors, (216) [2021-11-07 12:40:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3840 transitions. [2021-11-07 12:40:57,049 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3840 transitions. Word has length 17 [2021-11-07 12:40:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:40:57,049 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 3840 transitions. [2021-11-07 12:40:57,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-07 12:40:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3840 transitions. [2021-11-07 12:40:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 12:40:57,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:40:57,052 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] [2021-11-07 12:40:57,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:40:57,053 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)] === [2021-11-07 12:40:57,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:40:57,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1148775864, now seen corresponding path program 1 times [2021-11-07 12:40:57,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:40:57,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566430777] [2021-11-07 12:40:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:40:57,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:40:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:40:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:40:57,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:40:57,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566430777] [2021-11-07 12:40:57,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566430777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:40:57,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:40:57,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:40:57,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001729993] [2021-11-07 12:40:57,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:40:57,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:40:57,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:40:57,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:40:57,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:40:57,280 INFO L87 Difference]: Start difference. First operand 2807 states and 3840 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 12:40:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:40:57,421 INFO L93 Difference]: Finished difference Result 2837 states and 3868 transitions. [2021-11-07 12:40:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:40:57,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2021-11-07 12:40:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:40:57,454 INFO L225 Difference]: With dead ends: 2837 [2021-11-07 12:40:57,455 INFO L226 Difference]: Without dead ends: 2822 [2021-11-07 12:40:57,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:40:57,471 INFO L933 BasicCegarLoop]: 1962 mSDtfsCounter, 1944 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.28ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.30ms IncrementalHoareTripleChecker+Time [2021-11-07 12:40:57,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1944 Valid, 1976 Invalid, 6 Unknown, 0 Unchecked, 6.28ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 85.30ms Time] [2021-11-07 12:40:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2021-11-07 12:40:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2807. [2021-11-07 12:40:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2484 states have (on average 1.3715780998389695) internal successors, (3407), 2558 states have internal predecessors, (3407), 216 states have call successors, (216), 102 states have call predecessors, (216), 102 states have return successors, (216), 174 states have call predecessors, (216), 216 states have call successors, (216) [2021-11-07 12:40:57,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3839 transitions. [2021-11-07 12:40:57,579 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3839 transitions. Word has length 23 [2021-11-07 12:40:57,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:40:57,580 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 3839 transitions. [2021-11-07 12:40:57,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2021-11-07 12:40:57,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3839 transitions. [2021-11-07 12:40:57,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 12:40:57,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:40:57,584 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] [2021-11-07 12:40:57,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:40:57,584 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)] === [2021-11-07 12:40:57,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:40:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1148835446, now seen corresponding path program 1 times [2021-11-07 12:40:57,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:40:57,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025990372] [2021-11-07 12:40:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:40:57,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:40:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:40:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:40:57,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:40:57,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025990372] [2021-11-07 12:40:57,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025990372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:40:57,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:40:57,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:40:57,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828611838] [2021-11-07 12:40:57,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:40:57,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:40:57,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:40:57,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:40:57,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:40:57,960 INFO L87 Difference]: Start difference. First operand 2807 states and 3839 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-11-07 12:40:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:40:58,353 INFO L93 Difference]: Finished difference Result 8403 states and 12146 transitions. [2021-11-07 12:40:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:40:58,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2021-11-07 12:40:58,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:40:58,388 INFO L225 Difference]: With dead ends: 8403 [2021-11-07 12:40:58,389 INFO L226 Difference]: Without dead ends: 5604 [2021-11-07 12:40:58,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:40:58,408 INFO L933 BasicCegarLoop]: 2125 mSDtfsCounter, 1999 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 188.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.07ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 240.25ms IncrementalHoareTripleChecker+Time [2021-11-07 12:40:58,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1999 Valid, 3989 Invalid, 143 Unknown, 0 Unchecked, 10.07ms Time], IncrementalHoareTripleChecker [54 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 240.25ms Time] [2021-11-07 12:40:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5604 states. [2021-11-07 12:40:58,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5604 to 5592. [2021-11-07 12:40:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 4951 states have (on average 1.3609371844071905) internal successors, (6738), 5095 states have internal predecessors, (6738), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:40:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 7818 transitions. [2021-11-07 12:40:58,588 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 7818 transitions. Word has length 23 [2021-11-07 12:40:58,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:40:58,588 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 7818 transitions. [2021-11-07 12:40:58,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-11-07 12:40:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 7818 transitions. [2021-11-07 12:40:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 12:40:58,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:40:58,591 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] [2021-11-07 12:40:58,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:40:58,592 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:40:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:40:58,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1254163039, now seen corresponding path program 1 times [2021-11-07 12:40:58,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:40:58,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757121260] [2021-11-07 12:40:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:40:58,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:40:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:40:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:40:58,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:40:58,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757121260] [2021-11-07 12:40:58,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757121260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:40:58,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:40:58,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:40:58,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854888596] [2021-11-07 12:40:58,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:40:58,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:40:58,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:40:58,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:40:58,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:40:58,925 INFO L87 Difference]: Start difference. First operand 5592 states and 7818 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2021-11-07 12:40:59,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:40:59,016 INFO L93 Difference]: Finished difference Result 5592 states and 7818 transitions. [2021-11-07 12:40:59,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:40:59,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2021-11-07 12:40:59,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:40:59,041 INFO L225 Difference]: With dead ends: 5592 [2021-11-07 12:40:59,042 INFO L226 Difference]: Without dead ends: 5590 [2021-11-07 12:40:59,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:40:59,045 INFO L933 BasicCegarLoop]: 1946 mSDtfsCounter, 1925 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.77ms IncrementalHoareTripleChecker+Time [2021-11-07 12:40:59,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1925 Valid, 1946 Invalid, 1 Unknown, 0 Unchecked, 3.37ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.77ms Time] [2021-11-07 12:40:59,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2021-11-07 12:40:59,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5590. [2021-11-07 12:40:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 4950 states have (on average 1.360808080808081) internal successors, (6736), 5093 states have internal predecessors, (6736), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:40:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 7816 transitions. [2021-11-07 12:40:59,199 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 7816 transitions. Word has length 24 [2021-11-07 12:40:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:40:59,200 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 7816 transitions. [2021-11-07 12:40:59,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2021-11-07 12:40:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 7816 transitions. [2021-11-07 12:40:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 12:40:59,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:40:59,201 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] [2021-11-07 12:40:59,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:40:59,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:40:59,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:40:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash 224351136, now seen corresponding path program 1 times [2021-11-07 12:40:59,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:40:59,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892623128] [2021-11-07 12:40:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:40:59,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:40:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:40:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:40:59,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:40:59,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892623128] [2021-11-07 12:40:59,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892623128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:40:59,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:40:59,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:40:59,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501013781] [2021-11-07 12:40:59,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:40:59,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:40:59,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:40:59,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:40:59,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:40:59,379 INFO L87 Difference]: Start difference. First operand 5590 states and 7816 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 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) [2021-11-07 12:40:59,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:40:59,462 INFO L93 Difference]: Finished difference Result 5590 states and 7816 transitions. [2021-11-07 12:40:59,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:40:59,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 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 [2021-11-07 12:40:59,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:40:59,485 INFO L225 Difference]: With dead ends: 5590 [2021-11-07 12:40:59,486 INFO L226 Difference]: Without dead ends: 5588 [2021-11-07 12:40:59,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:40:59,488 INFO L933 BasicCegarLoop]: 1944 mSDtfsCounter, 1922 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.12ms IncrementalHoareTripleChecker+Time [2021-11-07 12:40:59,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 1944 Invalid, 1 Unknown, 0 Unchecked, 3.01ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.12ms Time] [2021-11-07 12:40:59,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5588 states. [2021-11-07 12:40:59,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5588 to 5588. [2021-11-07 12:40:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5588 states, 4949 states have (on average 1.3606789250353606) internal successors, (6734), 5091 states have internal predecessors, (6734), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:40:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 7814 transitions. [2021-11-07 12:40:59,651 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 7814 transitions. Word has length 25 [2021-11-07 12:40:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:40:59,651 INFO L470 AbstractCegarLoop]: Abstraction has 5588 states and 7814 transitions. [2021-11-07 12:40:59,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 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) [2021-11-07 12:40:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 7814 transitions. [2021-11-07 12:40:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 12:40:59,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:40:59,653 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] [2021-11-07 12:40:59,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:40:59,653 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:40:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:40:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1635046775, now seen corresponding path program 1 times [2021-11-07 12:40:59,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:40:59,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551215778] [2021-11-07 12:40:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:40:59,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:40:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:40:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:40:59,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:40:59,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551215778] [2021-11-07 12:40:59,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551215778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:40:59,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:40:59,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:40:59,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237885591] [2021-11-07 12:40:59,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:40:59,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:40:59,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:40:59,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:40:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:40:59,886 INFO L87 Difference]: Start difference. First operand 5588 states and 7814 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 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) [2021-11-07 12:40:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:40:59,972 INFO L93 Difference]: Finished difference Result 5588 states and 7814 transitions. [2021-11-07 12:40:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:40:59,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 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 [2021-11-07 12:40:59,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:40:59,997 INFO L225 Difference]: With dead ends: 5588 [2021-11-07 12:40:59,998 INFO L226 Difference]: Without dead ends: 5586 [2021-11-07 12:41:00,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:41:00,002 INFO L933 BasicCegarLoop]: 1942 mSDtfsCounter, 1919 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.23ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:00,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1919 Valid, 1942 Invalid, 1 Unknown, 0 Unchecked, 2.87ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.23ms Time] [2021-11-07 12:41:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2021-11-07 12:41:00,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 5586. [2021-11-07 12:41:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 4948 states have (on average 1.360549717057397) internal successors, (6732), 5089 states have internal predecessors, (6732), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:00,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 7812 transitions. [2021-11-07 12:41:00,164 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 7812 transitions. Word has length 26 [2021-11-07 12:41:00,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:00,165 INFO L470 AbstractCegarLoop]: Abstraction has 5586 states and 7812 transitions. [2021-11-07 12:41:00,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 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) [2021-11-07 12:41:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 7812 transitions. [2021-11-07 12:41:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 12:41:00,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:00,166 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] [2021-11-07 12:41:00,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:41:00,166 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:41:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash 853160138, now seen corresponding path program 1 times [2021-11-07 12:41:00,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:00,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841383363] [2021-11-07 12:41:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:00,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:41:00,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:00,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841383363] [2021-11-07 12:41:00,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841383363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:00,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:00,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:41:00,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196729214] [2021-11-07 12:41:00,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:00,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:41:00,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:00,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:41:00,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:41:00,312 INFO L87 Difference]: Start difference. First operand 5586 states and 7812 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-11-07 12:41:00,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:00,405 INFO L93 Difference]: Finished difference Result 5586 states and 7812 transitions. [2021-11-07 12:41:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:41:00,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2021-11-07 12:41:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:00,425 INFO L225 Difference]: With dead ends: 5586 [2021-11-07 12:41:00,425 INFO L226 Difference]: Without dead ends: 5575 [2021-11-07 12:41:00,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:41:00,429 INFO L933 BasicCegarLoop]: 1941 mSDtfsCounter, 1916 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.03ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:00,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1916 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 3.03ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 12:41:00,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2021-11-07 12:41:00,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 5575. [2021-11-07 12:41:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5575 states, 4938 states have (on average 1.3606723369785338) internal successors, (6719), 5078 states have internal predecessors, (6719), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5575 states to 5575 states and 7799 transitions. [2021-11-07 12:41:00,582 INFO L78 Accepts]: Start accepts. Automaton has 5575 states and 7799 transitions. Word has length 27 [2021-11-07 12:41:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:00,583 INFO L470 AbstractCegarLoop]: Abstraction has 5575 states and 7799 transitions. [2021-11-07 12:41:00,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-11-07 12:41:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5575 states and 7799 transitions. [2021-11-07 12:41:00,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 12:41:00,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:00,589 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] [2021-11-07 12:41:00,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:41:00,589 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:41:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash -848641613, now seen corresponding path program 1 times [2021-11-07 12:41:00,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:00,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595724029] [2021-11-07 12:41:00,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:00,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:41:00,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:00,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595724029] [2021-11-07 12:41:00,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595724029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:00,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:00,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:41:00,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304452808] [2021-11-07 12:41:00,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:00,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:41:00,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:41:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:41:00,798 INFO L87 Difference]: Start difference. First operand 5575 states and 7799 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-07 12:41:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:01,059 INFO L93 Difference]: Finished difference Result 11226 states and 15706 transitions. [2021-11-07 12:41:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:41:01,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-07 12:41:01,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:01,081 INFO L225 Difference]: With dead ends: 11226 [2021-11-07 12:41:01,081 INFO L226 Difference]: Without dead ends: 5659 [2021-11-07 12:41:01,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:41:01,102 INFO L933 BasicCegarLoop]: 1939 mSDtfsCounter, 47 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.35ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.56ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:01,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 3854 Invalid, 12 Unknown, 0 Unchecked, 7.35ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 91.56ms Time] [2021-11-07 12:41:01,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5659 states. [2021-11-07 12:41:01,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5659 to 5653. [2021-11-07 12:41:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5653 states, 5016 states have (on average 1.3610446570972887) internal successors, (6827), 5156 states have internal predecessors, (6827), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5653 states to 5653 states and 7907 transitions. [2021-11-07 12:41:01,291 INFO L78 Accepts]: Start accepts. Automaton has 5653 states and 7907 transitions. Word has length 68 [2021-11-07 12:41:01,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:01,292 INFO L470 AbstractCegarLoop]: Abstraction has 5653 states and 7907 transitions. [2021-11-07 12:41:01,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-07 12:41:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5653 states and 7907 transitions. [2021-11-07 12:41:01,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 12:41:01,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:01,297 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] [2021-11-07 12:41:01,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:41:01,298 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)] === [2021-11-07 12:41:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:01,298 INFO L85 PathProgramCache]: Analyzing trace with hash 381165906, now seen corresponding path program 1 times [2021-11-07 12:41:01,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:01,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517503649] [2021-11-07 12:41:01,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:01,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 12:41:01,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:01,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517503649] [2021-11-07 12:41:01,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517503649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:01,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:01,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:41:01,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441406682] [2021-11-07 12:41:01,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:01,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:41:01,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:01,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:41:01,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:41:01,480 INFO L87 Difference]: Start difference. First operand 5653 states and 7907 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:41:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:01,642 INFO L93 Difference]: Finished difference Result 11314 states and 15829 transitions. [2021-11-07 12:41:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:41:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-07 12:41:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:01,663 INFO L225 Difference]: With dead ends: 11314 [2021-11-07 12:41:01,663 INFO L226 Difference]: Without dead ends: 5669 [2021-11-07 12:41:01,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:41:01,681 INFO L933 BasicCegarLoop]: 1933 mSDtfsCounter, 2 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3861 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.86ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.59ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:01,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3861 Invalid, 13 Unknown, 0 Unchecked, 4.86ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 31.59ms Time] [2021-11-07 12:41:01,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-11-07 12:41:01,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5661. [2021-11-07 12:41:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5661 states, 5024 states have (on average 1.36046974522293) internal successors, (6835), 5164 states have internal predecessors, (6835), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5661 states to 5661 states and 7915 transitions. [2021-11-07 12:41:01,832 INFO L78 Accepts]: Start accepts. Automaton has 5661 states and 7915 transitions. Word has length 83 [2021-11-07 12:41:01,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:01,834 INFO L470 AbstractCegarLoop]: Abstraction has 5661 states and 7915 transitions. [2021-11-07 12:41:01,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:41:01,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5661 states and 7915 transitions. [2021-11-07 12:41:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 12:41:01,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:01,839 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] [2021-11-07 12:41:01,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 12:41:01,839 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)] === [2021-11-07 12:41:01,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:01,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1712946834, now seen corresponding path program 1 times [2021-11-07 12:41:01,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:01,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763993408] [2021-11-07 12:41:01,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:01,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 12:41:02,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:02,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763993408] [2021-11-07 12:41:02,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763993408] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:41:02,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266873181] [2021-11-07 12:41:02,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:02,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:41:02,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:41:02,028 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) [2021-11-07 12:41:02,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 12:41:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:03,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 3910 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:41:03,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:41:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 12:41:03,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:41:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 12:41:03,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266873181] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 12:41:03,550 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 12:41:03,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-07 12:41:03,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944411280] [2021-11-07 12:41:03,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 12:41:03,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:41:03,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:03,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:41:03,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:41:03,552 INFO L87 Difference]: Start difference. First operand 5661 states and 7915 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2021-11-07 12:41:03,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:03,749 INFO L93 Difference]: Finished difference Result 11330 states and 15845 transitions. [2021-11-07 12:41:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:41:03,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 85 [2021-11-07 12:41:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:03,768 INFO L225 Difference]: With dead ends: 11330 [2021-11-07 12:41:03,768 INFO L226 Difference]: Without dead ends: 5677 [2021-11-07 12:41:03,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.55ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:41:03,783 INFO L933 BasicCegarLoop]: 1933 mSDtfsCounter, 5 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5789 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.58ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:03,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 5789 Invalid, 23 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 51.58ms Time] [2021-11-07 12:41:03,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2021-11-07 12:41:03,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5677. [2021-11-07 12:41:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5040 states have (on average 1.3593253968253969) internal successors, (6851), 5180 states have internal predecessors, (6851), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 7931 transitions. [2021-11-07 12:41:03,947 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 7931 transitions. Word has length 85 [2021-11-07 12:41:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:03,947 INFO L470 AbstractCegarLoop]: Abstraction has 5677 states and 7931 transitions. [2021-11-07 12:41:03,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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) [2021-11-07 12:41:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 7931 transitions. [2021-11-07 12:41:03,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 12:41:03,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:03,952 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:03,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 12:41:04,166 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,SelfDestructingSolverStorable9 [2021-11-07 12:41:04,167 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)] === [2021-11-07 12:41:04,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:04,167 INFO L85 PathProgramCache]: Analyzing trace with hash 184371850, now seen corresponding path program 2 times [2021-11-07 12:41:04,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:04,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100344048] [2021-11-07 12:41:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:04,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:04,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:04,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100344048] [2021-11-07 12:41:04,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100344048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:04,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:04,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:41:04,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678972990] [2021-11-07 12:41:04,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:04,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:41:04,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:04,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:41:04,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:41:04,369 INFO L87 Difference]: Start difference. First operand 5677 states and 7931 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:41:06,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:41:06,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:06,933 INFO L93 Difference]: Finished difference Result 17023 states and 23783 transitions. [2021-11-07 12:41:06,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:41:06,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 12:41:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:06,974 INFO L225 Difference]: With dead ends: 17023 [2021-11-07 12:41:06,974 INFO L226 Difference]: Without dead ends: 11354 [2021-11-07 12:41:06,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.88ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:41:06,993 INFO L933 BasicCegarLoop]: 3843 mSDtfsCounter, 1994 mSDsluCounter, 5710 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2088.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 9553 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.59ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2220.46ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:06,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1994 Valid, 9553 Invalid, 18 Unknown, 0 Unchecked, 10.59ms Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2220.46ms Time] [2021-11-07 12:41:07,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11354 states. [2021-11-07 12:41:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11354 to 5685. [2021-11-07 12:41:07,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5048 states have (on average 1.358755942947702) internal successors, (6859), 5188 states have internal predecessors, (6859), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7939 transitions. [2021-11-07 12:41:07,219 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7939 transitions. Word has length 87 [2021-11-07 12:41:07,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:07,220 INFO L470 AbstractCegarLoop]: Abstraction has 5685 states and 7939 transitions. [2021-11-07 12:41:07,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:41:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7939 transitions. [2021-11-07 12:41:07,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 12:41:07,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:07,229 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:07,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 12:41:07,229 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)] === [2021-11-07 12:41:07,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:07,229 INFO L85 PathProgramCache]: Analyzing trace with hash -402434164, now seen corresponding path program 1 times [2021-11-07 12:41:07,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:07,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544537698] [2021-11-07 12:41:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:07,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:07,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:07,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544537698] [2021-11-07 12:41:07,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544537698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:07,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:07,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:41:07,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245472161] [2021-11-07 12:41:07,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:07,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:41:07,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:07,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:41:07,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:41:07,591 INFO L87 Difference]: Start difference. First operand 5685 states and 7939 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:41:07,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:07,998 INFO L93 Difference]: Finished difference Result 13355 states and 18527 transitions. [2021-11-07 12:41:07,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:41:07,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 12:41:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:08,022 INFO L225 Difference]: With dead ends: 13355 [2021-11-07 12:41:08,023 INFO L226 Difference]: Without dead ends: 7670 [2021-11-07 12:41:08,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.88ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:41:08,041 INFO L933 BasicCegarLoop]: 1984 mSDtfsCounter, 622 mSDsluCounter, 3808 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 5792 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.28ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.13ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:08,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 5792 Invalid, 172 Unknown, 0 Unchecked, 7.28ms Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 172.13ms Time] [2021-11-07 12:41:08,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7670 states. [2021-11-07 12:41:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7670 to 5685. [2021-11-07 12:41:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5048 states have (on average 1.3579635499207607) internal successors, (6855), 5188 states have internal predecessors, (6855), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7935 transitions. [2021-11-07 12:41:08,315 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7935 transitions. Word has length 87 [2021-11-07 12:41:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:08,316 INFO L470 AbstractCegarLoop]: Abstraction has 5685 states and 7935 transitions. [2021-11-07 12:41:08,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:41:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7935 transitions. [2021-11-07 12:41:08,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 12:41:08,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:08,323 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:08,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 12:41:08,323 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)] === [2021-11-07 12:41:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:08,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1875368696, now seen corresponding path program 1 times [2021-11-07 12:41:08,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:08,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651979767] [2021-11-07 12:41:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:08,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:08,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:08,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651979767] [2021-11-07 12:41:08,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651979767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:08,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:08,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 12:41:08,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85331903] [2021-11-07 12:41:08,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:08,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:41:08,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:08,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:41:08,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:41:08,736 INFO L87 Difference]: Start difference. First operand 5685 states and 7935 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2021-11-07 12:41:11,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:41:13,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:41:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:13,674 INFO L93 Difference]: Finished difference Result 16742 states and 23071 transitions. [2021-11-07 12:41:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 12:41:13,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 89 [2021-11-07 12:41:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:13,708 INFO L225 Difference]: With dead ends: 16742 [2021-11-07 12:41:13,708 INFO L226 Difference]: Without dead ends: 11065 [2021-11-07 12:41:13,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 100.59ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 12:41:13,723 INFO L933 BasicCegarLoop]: 2314 mSDtfsCounter, 3309 mSDsluCounter, 11017 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 74 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4371.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3313 SdHoareTripleChecker+Valid, 13331 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.15ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4492.57ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:13,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3313 Valid, 13331 Invalid, 533 Unknown, 0 Unchecked, 18.15ms Time], IncrementalHoareTripleChecker [74 Valid, 457 Invalid, 2 Unknown, 0 Unchecked, 4492.57ms Time] [2021-11-07 12:41:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11065 states. [2021-11-07 12:41:14,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 5705. [2021-11-07 12:41:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 5068 states have (on average 1.35655090765588) internal successors, (6875), 5208 states have internal predecessors, (6875), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:14,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 7955 transitions. [2021-11-07 12:41:14,071 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 7955 transitions. Word has length 89 [2021-11-07 12:41:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:14,071 INFO L470 AbstractCegarLoop]: Abstraction has 5705 states and 7955 transitions. [2021-11-07 12:41:14,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2021-11-07 12:41:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 7955 transitions. [2021-11-07 12:41:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 12:41:14,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:14,076 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:14,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 12:41:14,077 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)] === [2021-11-07 12:41:14,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:14,077 INFO L85 PathProgramCache]: Analyzing trace with hash 445986628, now seen corresponding path program 1 times [2021-11-07 12:41:14,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:14,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653185032] [2021-11-07 12:41:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:14,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:14,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:14,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653185032] [2021-11-07 12:41:14,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653185032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:14,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:14,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:41:14,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249622086] [2021-11-07 12:41:14,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:14,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:41:14,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:14,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:41:14,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:41:14,364 INFO L87 Difference]: Start difference. First operand 5705 states and 7955 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-07 12:41:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:14,613 INFO L93 Difference]: Finished difference Result 13519 states and 18715 transitions. [2021-11-07 12:41:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:41:14,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 91 [2021-11-07 12:41:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:14,638 INFO L225 Difference]: With dead ends: 13519 [2021-11-07 12:41:14,639 INFO L226 Difference]: Without dead ends: 7822 [2021-11-07 12:41:14,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:41:14,652 INFO L933 BasicCegarLoop]: 2041 mSDtfsCounter, 692 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 3955 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.84ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:14,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 3955 Invalid, 6 Unknown, 0 Unchecked, 4.47ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 11.84ms Time] [2021-11-07 12:41:14,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2021-11-07 12:41:14,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 5709. [2021-11-07 12:41:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5709 states, 5072 states have (on average 1.3562697160883281) internal successors, (6879), 5212 states have internal predecessors, (6879), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5709 states to 5709 states and 7959 transitions. [2021-11-07 12:41:14,867 INFO L78 Accepts]: Start accepts. Automaton has 5709 states and 7959 transitions. Word has length 91 [2021-11-07 12:41:14,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:14,868 INFO L470 AbstractCegarLoop]: Abstraction has 5709 states and 7959 transitions. [2021-11-07 12:41:14,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-11-07 12:41:14,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5709 states and 7959 transitions. [2021-11-07 12:41:14,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 12:41:14,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:14,873 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:14,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 12:41:14,874 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)] === [2021-11-07 12:41:14,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:14,874 INFO L85 PathProgramCache]: Analyzing trace with hash -540204671, now seen corresponding path program 1 times [2021-11-07 12:41:14,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:14,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151506790] [2021-11-07 12:41:14,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:14,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:15,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:15,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151506790] [2021-11-07 12:41:15,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151506790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:15,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:15,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:41:15,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282104503] [2021-11-07 12:41:15,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:15,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:41:15,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:15,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:41:15,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:41:15,157 INFO L87 Difference]: Start difference. First operand 5709 states and 7959 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-11-07 12:41:16,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:16,378 INFO L93 Difference]: Finished difference Result 24657 states and 33563 transitions. [2021-11-07 12:41:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 12:41:16,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 94 [2021-11-07 12:41:16,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:16,430 INFO L225 Difference]: With dead ends: 24657 [2021-11-07 12:41:16,430 INFO L226 Difference]: Without dead ends: 18956 [2021-11-07 12:41:16,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 43.87ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:41:16,451 INFO L933 BasicCegarLoop]: 2674 mSDtfsCounter, 4484 mSDsluCounter, 7975 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 312.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4496 SdHoareTripleChecker+Valid, 10649 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.35ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 370.27ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:16,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4496 Valid, 10649 Invalid, 395 Unknown, 0 Unchecked, 16.35ms Time], IncrementalHoareTripleChecker [83 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 370.27ms Time] [2021-11-07 12:41:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18956 states. [2021-11-07 12:41:16,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18956 to 5721. [2021-11-07 12:41:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5721 states, 5084 states have (on average 1.3554287962234461) internal successors, (6891), 5224 states have internal predecessors, (6891), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 7971 transitions. [2021-11-07 12:41:16,823 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 7971 transitions. Word has length 94 [2021-11-07 12:41:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:16,823 INFO L470 AbstractCegarLoop]: Abstraction has 5721 states and 7971 transitions. [2021-11-07 12:41:16,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-11-07 12:41:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 7971 transitions. [2021-11-07 12:41:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 12:41:16,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:16,829 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:16,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 12:41:16,829 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)] === [2021-11-07 12:41:16,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:16,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2050509027, now seen corresponding path program 1 times [2021-11-07 12:41:16,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:16,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735514046] [2021-11-07 12:41:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:16,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:17,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:17,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735514046] [2021-11-07 12:41:17,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735514046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:17,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:17,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:41:17,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231510949] [2021-11-07 12:41:17,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:17,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:41:17,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:17,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:41:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:41:17,100 INFO L87 Difference]: Start difference. First operand 5721 states and 7971 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-11-07 12:41:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:18,565 INFO L93 Difference]: Finished difference Result 24745 states and 33699 transitions. [2021-11-07 12:41:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 12:41:18,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 12:41:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:18,608 INFO L225 Difference]: With dead ends: 24745 [2021-11-07 12:41:18,609 INFO L226 Difference]: Without dead ends: 19032 [2021-11-07 12:41:18,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 44.17ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:41:18,629 INFO L933 BasicCegarLoop]: 2817 mSDtfsCounter, 4725 mSDsluCounter, 7309 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 328.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4737 SdHoareTripleChecker+Valid, 10126 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.89ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 388.57ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:18,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4737 Valid, 10126 Invalid, 400 Unknown, 0 Unchecked, 16.89ms Time], IncrementalHoareTripleChecker [92 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 388.57ms Time] [2021-11-07 12:41:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19032 states. [2021-11-07 12:41:18,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19032 to 5729. [2021-11-07 12:41:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5729 states, 5092 states have (on average 1.3548703849175177) internal successors, (6899), 5232 states have internal predecessors, (6899), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5729 states to 5729 states and 7979 transitions. [2021-11-07 12:41:18,969 INFO L78 Accepts]: Start accepts. Automaton has 5729 states and 7979 transitions. Word has length 96 [2021-11-07 12:41:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:18,970 INFO L470 AbstractCegarLoop]: Abstraction has 5729 states and 7979 transitions. [2021-11-07 12:41:18,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-11-07 12:41:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5729 states and 7979 transitions. [2021-11-07 12:41:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 12:41:18,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:18,975 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:18,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 12:41:18,975 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)] === [2021-11-07 12:41:18,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:18,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1050932583, now seen corresponding path program 1 times [2021-11-07 12:41:18,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:18,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021706771] [2021-11-07 12:41:18,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:18,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:19,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:19,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021706771] [2021-11-07 12:41:19,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021706771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:19,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:19,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:41:19,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799901097] [2021-11-07 12:41:19,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:19,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:41:19,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:19,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:41:19,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:41:19,243 INFO L87 Difference]: Start difference. First operand 5729 states and 7979 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-11-07 12:41:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:20,091 INFO L93 Difference]: Finished difference Result 16981 states and 23295 transitions. [2021-11-07 12:41:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:41:20,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 98 [2021-11-07 12:41:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:20,119 INFO L225 Difference]: With dead ends: 16981 [2021-11-07 12:41:20,119 INFO L226 Difference]: Without dead ends: 11260 [2021-11-07 12:41:20,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.97ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:41:20,133 INFO L933 BasicCegarLoop]: 2467 mSDtfsCounter, 1986 mSDsluCounter, 4375 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 205.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 6842 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.26ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 265.45ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:20,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1994 Valid, 6842 Invalid, 292 Unknown, 0 Unchecked, 8.26ms Time], IncrementalHoareTripleChecker [55 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 265.45ms Time] [2021-11-07 12:41:20,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11260 states. [2021-11-07 12:41:20,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11260 to 5857. [2021-11-07 12:41:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 5220 states have (on average 1.3522988505747127) internal successors, (7059), 5360 states have internal predecessors, (7059), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 8139 transitions. [2021-11-07 12:41:20,520 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 8139 transitions. Word has length 98 [2021-11-07 12:41:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:20,521 INFO L470 AbstractCegarLoop]: Abstraction has 5857 states and 8139 transitions. [2021-11-07 12:41:20,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-11-07 12:41:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 8139 transitions. [2021-11-07 12:41:20,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 12:41:20,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:20,529 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:20,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 12:41:20,529 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)] === [2021-11-07 12:41:20,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:20,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2052678435, now seen corresponding path program 1 times [2021-11-07 12:41:20,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:20,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702285728] [2021-11-07 12:41:20,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:20,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:21,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:21,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702285728] [2021-11-07 12:41:21,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702285728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:21,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:21,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 12:41:21,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199564553] [2021-11-07 12:41:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:21,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 12:41:21,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 12:41:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:41:21,169 INFO L87 Difference]: Start difference. First operand 5857 states and 8139 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:41:23,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:41:29,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:29,863 INFO L93 Difference]: Finished difference Result 22056 states and 29916 transitions. [2021-11-07 12:41:29,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-07 12:41:29,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-07 12:41:29,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:29,898 INFO L225 Difference]: With dead ends: 22056 [2021-11-07 12:41:29,898 INFO L226 Difference]: Without dead ends: 16207 [2021-11-07 12:41:29,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 904.49ms TimeCoverageRelationStatistics Valid=627, Invalid=2343, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 12:41:29,914 INFO L933 BasicCegarLoop]: 7635 mSDtfsCounter, 7611 mSDsluCounter, 34174 mSDsCounter, 0 mSdLazyCounter, 3538 mSolverCounterSat, 518 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5471.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7615 SdHoareTripleChecker+Valid, 41809 SdHoareTripleChecker+Invalid, 4057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.08ms SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 3538 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6267.75ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:29,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7615 Valid, 41809 Invalid, 4057 Unknown, 0 Unchecked, 56.08ms Time], IncrementalHoareTripleChecker [518 Valid, 3538 Invalid, 1 Unknown, 0 Unchecked, 6267.75ms Time] [2021-11-07 12:41:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16207 states. [2021-11-07 12:41:30,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16207 to 5857. [2021-11-07 12:41:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 5220 states have (on average 1.3519157088122606) internal successors, (7057), 5360 states have internal predecessors, (7057), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 8137 transitions. [2021-11-07 12:41:30,383 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 8137 transitions. Word has length 100 [2021-11-07 12:41:30,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:30,383 INFO L470 AbstractCegarLoop]: Abstraction has 5857 states and 8137 transitions. [2021-11-07 12:41:30,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:41:30,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 8137 transitions. [2021-11-07 12:41:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 12:41:30,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:30,393 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:30,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 12:41:30,394 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)] === [2021-11-07 12:41:30,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:30,394 INFO L85 PathProgramCache]: Analyzing trace with hash -262262845, now seen corresponding path program 1 times [2021-11-07 12:41:30,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:30,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683563798] [2021-11-07 12:41:30,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:30,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:30,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:30,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683563798] [2021-11-07 12:41:30,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683563798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:30,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:30,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:41:30,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371354257] [2021-11-07 12:41:30,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:30,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:41:30,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:41:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:41:30,707 INFO L87 Difference]: Start difference. First operand 5857 states and 8137 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2021-11-07 12:41:32,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:32,551 INFO L93 Difference]: Finished difference Result 18539 states and 25266 transitions. [2021-11-07 12:41:32,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 12:41:32,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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 116 [2021-11-07 12:41:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:32,589 INFO L225 Difference]: With dead ends: 18539 [2021-11-07 12:41:32,589 INFO L226 Difference]: Without dead ends: 12690 [2021-11-07 12:41:32,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 76.79ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-07 12:41:32,601 INFO L933 BasicCegarLoop]: 3152 mSDtfsCounter, 7135 mSDsluCounter, 11513 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 525.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7139 SdHoareTripleChecker+Valid, 14665 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.47ms SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 654.33ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:32,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7139 Valid, 14665 Invalid, 482 Unknown, 0 Unchecked, 21.47ms Time], IncrementalHoareTripleChecker [79 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 654.33ms Time] [2021-11-07 12:41:32,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12690 states. [2021-11-07 12:41:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12690 to 5793. [2021-11-07 12:41:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 5156 states have (on average 1.3527928626842514) internal successors, (6975), 5296 states have internal predecessors, (6975), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:32,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8055 transitions. [2021-11-07 12:41:32,980 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8055 transitions. Word has length 116 [2021-11-07 12:41:32,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:32,982 INFO L470 AbstractCegarLoop]: Abstraction has 5793 states and 8055 transitions. [2021-11-07 12:41:32,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 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) [2021-11-07 12:41:32,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8055 transitions. [2021-11-07 12:41:32,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 12:41:32,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:32,994 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:32,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 12:41:32,995 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)] === [2021-11-07 12:41:32,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:32,995 INFO L85 PathProgramCache]: Analyzing trace with hash 852425825, now seen corresponding path program 1 times [2021-11-07 12:41:32,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:32,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693494343] [2021-11-07 12:41:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:32,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:33,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:33,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693494343] [2021-11-07 12:41:33,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693494343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:33,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:33,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 12:41:33,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484069869] [2021-11-07 12:41:33,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:33,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 12:41:33,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:33,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 12:41:33,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:41:33,682 INFO L87 Difference]: Start difference. First operand 5793 states and 8055 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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) [2021-11-07 12:41:35,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:41:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:45,369 INFO L93 Difference]: Finished difference Result 27160 states and 36660 transitions. [2021-11-07 12:41:45,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-07 12:41:45,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 116 [2021-11-07 12:41:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:45,411 INFO L225 Difference]: With dead ends: 27160 [2021-11-07 12:41:45,411 INFO L226 Difference]: Without dead ends: 21375 [2021-11-07 12:41:45,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 1584.42ms TimeCoverageRelationStatistics Valid=896, Invalid=3796, Unknown=0, NotChecked=0, Total=4692 [2021-11-07 12:41:45,429 INFO L933 BasicCegarLoop]: 6434 mSDtfsCounter, 11733 mSDsluCounter, 32122 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 743 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6236.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11737 SdHoareTripleChecker+Valid, 38556 SdHoareTripleChecker+Invalid, 3772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.64ms SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7328.82ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:45,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11737 Valid, 38556 Invalid, 3772 Unknown, 0 Unchecked, 59.64ms Time], IncrementalHoareTripleChecker [743 Valid, 3028 Invalid, 1 Unknown, 0 Unchecked, 7328.82ms Time] [2021-11-07 12:41:45,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21375 states. [2021-11-07 12:41:45,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21375 to 5793. [2021-11-07 12:41:45,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 5156 states have (on average 1.3524049650892165) internal successors, (6973), 5296 states have internal predecessors, (6973), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8053 transitions. [2021-11-07 12:41:45,966 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8053 transitions. Word has length 116 [2021-11-07 12:41:45,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:45,966 INFO L470 AbstractCegarLoop]: Abstraction has 5793 states and 8053 transitions. [2021-11-07 12:41:45,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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) [2021-11-07 12:41:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8053 transitions. [2021-11-07 12:41:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 12:41:45,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:45,974 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:45,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 12:41:45,974 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:41:45,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:45,974 INFO L85 PathProgramCache]: Analyzing trace with hash 143688362, now seen corresponding path program 1 times [2021-11-07 12:41:45,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:45,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380319835] [2021-11-07 12:41:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:45,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:46,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:46,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380319835] [2021-11-07 12:41:46,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380319835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:46,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:46,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:41:46,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245401979] [2021-11-07 12:41:46,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:46,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:41:46,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:46,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:41:46,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:41:46,138 INFO L87 Difference]: Start difference. First operand 5793 states and 8053 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-07 12:41:51,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:51,098 INFO L93 Difference]: Finished difference Result 12418 states and 17213 transitions. [2021-11-07 12:41:51,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:41:51,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 118 [2021-11-07 12:41:51,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:51,135 INFO L225 Difference]: With dead ends: 12418 [2021-11-07 12:41:51,135 INFO L226 Difference]: Without dead ends: 6633 [2021-11-07 12:41:51,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:41:51,146 INFO L933 BasicCegarLoop]: 1875 mSDtfsCounter, 222 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4190.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4428.52ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:51,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 3726 Invalid, 159 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [27 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 4428.52ms Time] [2021-11-07 12:41:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2021-11-07 12:41:51,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 5841. [2021-11-07 12:41:51,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5841 states, 5204 states have (on average 1.3491544965411222) internal successors, (7021), 5344 states have internal predecessors, (7021), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5841 states to 5841 states and 8101 transitions. [2021-11-07 12:41:51,625 INFO L78 Accepts]: Start accepts. Automaton has 5841 states and 8101 transitions. Word has length 118 [2021-11-07 12:41:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:51,626 INFO L470 AbstractCegarLoop]: Abstraction has 5841 states and 8101 transitions. [2021-11-07 12:41:51,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-07 12:41:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5841 states and 8101 transitions. [2021-11-07 12:41:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 12:41:51,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:51,633 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:51,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 12:41:51,634 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:41:51,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1159778289, now seen corresponding path program 1 times [2021-11-07 12:41:51,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:51,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596464213] [2021-11-07 12:41:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:51,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:51,813 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:51,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:51,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596464213] [2021-11-07 12:41:51,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596464213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:51,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:41:51,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:41:51,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462685017] [2021-11-07 12:41:51,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:51,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:41:51,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:51,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:41:51,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:41:51,816 INFO L87 Difference]: Start difference. First operand 5841 states and 8101 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2021-11-07 12:41:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:52,564 INFO L93 Difference]: Finished difference Result 13829 states and 19031 transitions. [2021-11-07 12:41:52,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:41:52,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 121 [2021-11-07 12:41:52,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:52,585 INFO L225 Difference]: With dead ends: 13829 [2021-11-07 12:41:52,585 INFO L226 Difference]: Without dead ends: 7996 [2021-11-07 12:41:52,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:41:52,597 INFO L933 BasicCegarLoop]: 2621 mSDtfsCounter, 830 mSDsluCounter, 4378 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 6999 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.37ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:52,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 6999 Invalid, 34 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 53.37ms Time] [2021-11-07 12:41:52,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2021-11-07 12:41:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 5845. [2021-11-07 12:41:53,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 5208 states have (on average 1.3488863287250383) internal successors, (7025), 5348 states have internal predecessors, (7025), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 8105 transitions. [2021-11-07 12:41:53,102 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 8105 transitions. Word has length 121 [2021-11-07 12:41:53,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:53,104 INFO L470 AbstractCegarLoop]: Abstraction has 5845 states and 8105 transitions. [2021-11-07 12:41:53,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2021-11-07 12:41:53,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 8105 transitions. [2021-11-07 12:41:53,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 12:41:53,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:53,112 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:53,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 12:41:53,113 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:41:53,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:53,113 INFO L85 PathProgramCache]: Analyzing trace with hash -76519722, now seen corresponding path program 1 times [2021-11-07 12:41:53,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:53,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018427980] [2021-11-07 12:41:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:53,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:41:53,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:41:53,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018427980] [2021-11-07 12:41:53,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018427980] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:41:53,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473210120] [2021-11-07 12:41:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:53,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:41:53,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:41:53,284 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) [2021-11-07 12:41:53,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 12:41:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:41:54,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 4199 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 12:41:54,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:41:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 12:41:54,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:41:54,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473210120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:41:54,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:41:54,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-07 12:41:54,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656665128] [2021-11-07 12:41:54,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:41:54,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:41:54,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:41:54,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:41:54,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:41:54,586 INFO L87 Difference]: Start difference. First operand 5845 states and 8105 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2021-11-07 12:41:55,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:41:55,119 INFO L93 Difference]: Finished difference Result 12583 states and 17405 transitions. [2021-11-07 12:41:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:41:55,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 122 [2021-11-07 12:41:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:41:55,133 INFO L225 Difference]: With dead ends: 12583 [2021-11-07 12:41:55,133 INFO L226 Difference]: Without dead ends: 6746 [2021-11-07 12:41:55,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.30ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:41:55,142 INFO L933 BasicCegarLoop]: 2020 mSDtfsCounter, 375 mSDsluCounter, 3995 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.26ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.83ms IncrementalHoareTripleChecker+Time [2021-11-07 12:41:55,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 6015 Invalid, 26 Unknown, 0 Unchecked, 4.26ms Time], IncrementalHoareTripleChecker [10 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 28.83ms Time] [2021-11-07 12:41:55,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2021-11-07 12:41:55,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 5747. [2021-11-07 12:41:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5747 states, 5110 states have (on average 1.34853228962818) internal successors, (6891), 5250 states have internal predecessors, (6891), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-07 12:41:55,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5747 states to 5747 states and 7971 transitions. [2021-11-07 12:41:55,619 INFO L78 Accepts]: Start accepts. Automaton has 5747 states and 7971 transitions. Word has length 122 [2021-11-07 12:41:55,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:41:55,619 INFO L470 AbstractCegarLoop]: Abstraction has 5747 states and 7971 transitions. [2021-11-07 12:41:55,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2021-11-07 12:41:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5747 states and 7971 transitions. [2021-11-07 12:41:55,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 12:41:55,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:41:55,624 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:41:55,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 12:41:55,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-07 12:41:55,840 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:41:55,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:41:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash 851412063, now seen corresponding path program 1 times [2021-11-07 12:41:55,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:41:55,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174754199] [2021-11-07 12:41:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:41:55,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:41:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:42:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:42:00,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:42:00,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174754199] [2021-11-07 12:42:00,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174754199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:42:00,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:42:00,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 12:42:00,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510072264] [2021-11-07 12:42:00,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:42:00,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 12:42:00,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:42:00,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 12:42:00,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-07 12:42:00,270 INFO L87 Difference]: Start difference. First operand 5747 states and 7971 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 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) [2021-11-07 12:42:02,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:04,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:06,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:08,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:10,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:26,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:29,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:38,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:40,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:42,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:44,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:49,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:51,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:42:56,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:42:56,488 INFO L93 Difference]: Finished difference Result 20946 states and 28726 transitions. [2021-11-07 12:42:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-07 12:42:56,489 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 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 124 [2021-11-07 12:42:56,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:42:56,534 INFO L225 Difference]: With dead ends: 20946 [2021-11-07 12:42:56,534 INFO L226 Difference]: Without dead ends: 15153 [2021-11-07 12:42:56,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3032 ImplicationChecksByTransitivity, 4218.01ms TimeCoverageRelationStatistics Valid=1571, Invalid=6261, Unknown=0, NotChecked=0, Total=7832 [2021-11-07 12:42:56,551 INFO L933 BasicCegarLoop]: 4419 mSDtfsCounter, 14216 mSDsluCounter, 24137 mSDsCounter, 0 mSdLazyCounter, 7041 mSolverCounterSat, 788 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46684.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14216 SdHoareTripleChecker+Valid, 28556 SdHoareTripleChecker+Invalid, 7841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 82.27ms SdHoareTripleChecker+Time, 788 IncrementalHoareTripleChecker+Valid, 7041 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49714.36ms IncrementalHoareTripleChecker+Time [2021-11-07 12:42:56,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14216 Valid, 28556 Invalid, 7841 Unknown, 0 Unchecked, 82.27ms Time], IncrementalHoareTripleChecker [788 Valid, 7041 Invalid, 12 Unknown, 0 Unchecked, 49714.36ms Time] [2021-11-07 12:42:56,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15153 states. [2021-11-07 12:42:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15153 to 7688. [2021-11-07 12:42:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7688 states, 6739 states have (on average 1.3515358361774743) internal successors, (9108), 6947 states have internal predecessors, (9108), 642 states have call successors, (642), 306 states have call predecessors, (642), 306 states have return successors, (858), 516 states have call predecessors, (858), 642 states have call successors, (858) [2021-11-07 12:42:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 10608 transitions. [2021-11-07 12:42:57,272 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 10608 transitions. Word has length 124 [2021-11-07 12:42:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:42:57,273 INFO L470 AbstractCegarLoop]: Abstraction has 7688 states and 10608 transitions. [2021-11-07 12:42:57,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 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) [2021-11-07 12:42:57,273 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 10608 transitions. [2021-11-07 12:42:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-07 12:42:57,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:42:57,280 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:42:57,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 12:42:57,280 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:42:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:42:57,281 INFO L85 PathProgramCache]: Analyzing trace with hash -325152332, now seen corresponding path program 1 times [2021-11-07 12:42:57,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:42:57,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260713125] [2021-11-07 12:42:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:42:57,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:42:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:42:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:42:57,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:42:57,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260713125] [2021-11-07 12:42:57,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260713125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:42:57,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:42:57,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 12:42:57,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838680054] [2021-11-07 12:42:57,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:42:57,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:42:57,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:42:57,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:42:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:42:57,638 INFO L87 Difference]: Start difference. First operand 7688 states and 10608 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2021-11-07 12:42:59,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:42:59,722 INFO L93 Difference]: Finished difference Result 20957 states and 28569 transitions. [2021-11-07 12:42:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 12:42:59,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 146 [2021-11-07 12:42:59,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:42:59,753 INFO L225 Difference]: With dead ends: 20957 [2021-11-07 12:42:59,753 INFO L226 Difference]: Without dead ends: 13277 [2021-11-07 12:42:59,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 85.32ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-07 12:42:59,770 INFO L933 BasicCegarLoop]: 2362 mSDtfsCounter, 3041 mSDsluCounter, 8742 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 298.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3046 SdHoareTripleChecker+Valid, 11104 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.17ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 354.50ms IncrementalHoareTripleChecker+Time [2021-11-07 12:42:59,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3046 Valid, 11104 Invalid, 446 Unknown, 0 Unchecked, 12.17ms Time], IncrementalHoareTripleChecker [73 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 354.50ms Time] [2021-11-07 12:42:59,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13277 states. [2021-11-07 12:43:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13277 to 7696. [2021-11-07 12:43:00,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7696 states, 6747 states have (on average 1.3511190158589002) internal successors, (9116), 6955 states have internal predecessors, (9116), 642 states have call successors, (642), 306 states have call predecessors, (642), 306 states have return successors, (858), 516 states have call predecessors, (858), 642 states have call successors, (858) [2021-11-07 12:43:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7696 states to 7696 states and 10616 transitions. [2021-11-07 12:43:00,425 INFO L78 Accepts]: Start accepts. Automaton has 7696 states and 10616 transitions. Word has length 146 [2021-11-07 12:43:00,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:43:00,426 INFO L470 AbstractCegarLoop]: Abstraction has 7696 states and 10616 transitions. [2021-11-07 12:43:00,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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) [2021-11-07 12:43:00,426 INFO L276 IsEmpty]: Start isEmpty. Operand 7696 states and 10616 transitions. [2021-11-07 12:43:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 12:43:00,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:43:00,434 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:43:00,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 12:43:00,434 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:43:00,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:43:00,435 INFO L85 PathProgramCache]: Analyzing trace with hash -572329288, now seen corresponding path program 1 times [2021-11-07 12:43:00,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:43:00,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462367657] [2021-11-07 12:43:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:43:00,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:43:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:43:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:43:12,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:43:12,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462367657] [2021-11-07 12:43:12,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462367657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:43:12,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:43:12,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-07 12:43:12,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104193448] [2021-11-07 12:43:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:43:12,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 12:43:12,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:43:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 12:43:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-11-07 12:43:12,252 INFO L87 Difference]: Start difference. First operand 7696 states and 10616 transitions. Second operand has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 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) [2021-11-07 12:43:14,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:43:16,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:43:18,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:43:20,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:43:53,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:44:15,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:44:16,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:44:24,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:44:26,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:44:28,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:44:34,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:44:51,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:44:51,919 INFO L93 Difference]: Finished difference Result 32922 states and 45079 transitions. [2021-11-07 12:44:51,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2021-11-07 12:44:51,920 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 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 148 [2021-11-07 12:44:51,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:44:51,994 INFO L225 Difference]: With dead ends: 32922 [2021-11-07 12:44:51,994 INFO L226 Difference]: Without dead ends: 25146 [2021-11-07 12:44:52,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10671 ImplicationChecksByTransitivity, 10276.01ms TimeCoverageRelationStatistics Valid=4753, Invalid=21329, Unknown=0, NotChecked=0, Total=26082 [2021-11-07 12:44:52,030 INFO L933 BasicCegarLoop]: 4070 mSDtfsCounter, 28224 mSDsluCounter, 39527 mSDsCounter, 0 mSdLazyCounter, 12734 mSolverCounterSat, 1639 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79003.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28224 SdHoareTripleChecker+Valid, 43597 SdHoareTripleChecker+Invalid, 14379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 164.62ms SdHoareTripleChecker+Time, 1639 IncrementalHoareTripleChecker+Valid, 12734 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85468.20ms IncrementalHoareTripleChecker+Time [2021-11-07 12:44:52,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28224 Valid, 43597 Invalid, 14379 Unknown, 0 Unchecked, 164.62ms Time], IncrementalHoareTripleChecker [1639 Valid, 12734 Invalid, 6 Unknown, 0 Unchecked, 85468.20ms Time] [2021-11-07 12:44:52,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25146 states. [2021-11-07 12:44:53,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25146 to 11820. [2021-11-07 12:44:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11820 states, 10243 states have (on average 1.3548765010250903) internal successors, (13878), 10587 states have internal predecessors, (13878), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-07 12:44:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11820 states to 11820 states and 16226 transitions. [2021-11-07 12:44:53,237 INFO L78 Accepts]: Start accepts. Automaton has 11820 states and 16226 transitions. Word has length 148 [2021-11-07 12:44:53,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:44:53,238 INFO L470 AbstractCegarLoop]: Abstraction has 11820 states and 16226 transitions. [2021-11-07 12:44:53,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 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) [2021-11-07 12:44:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand 11820 states and 16226 transitions. [2021-11-07 12:44:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-07 12:44:53,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:44:53,245 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:44:53,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 12:44:53,246 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:44:53,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:44:53,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1703838082, now seen corresponding path program 1 times [2021-11-07 12:44:53,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:44:53,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480764633] [2021-11-07 12:44:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:44:53,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:45:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:45:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:45:07,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:45:07,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480764633] [2021-11-07 12:45:07,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480764633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:45:07,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:45:07,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-07 12:45:07,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640697836] [2021-11-07 12:45:07,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:45:07,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 12:45:07,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:45:07,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 12:45:07,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-11-07 12:45:07,902 INFO L87 Difference]: Start difference. First operand 11820 states and 16226 transitions. Second operand has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 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) [2021-11-07 12:45:09,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:45:12,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:45:14,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:46:10,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:46:20,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:46:37,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:46:47,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:46:51,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:47:09,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:47:12,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:47:19,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:47:19,619 INFO L93 Difference]: Finished difference Result 40204 states and 55055 transitions. [2021-11-07 12:47:19,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-11-07 12:47:19,620 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 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 151 [2021-11-07 12:47:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:47:19,703 INFO L225 Difference]: With dead ends: 40204 [2021-11-07 12:47:19,703 INFO L226 Difference]: Without dead ends: 28328 [2021-11-07 12:47:19,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10727 ImplicationChecksByTransitivity, 20206.79ms TimeCoverageRelationStatistics Valid=4936, Invalid=21146, Unknown=0, NotChecked=0, Total=26082 [2021-11-07 12:47:19,740 INFO L933 BasicCegarLoop]: 4358 mSDtfsCounter, 29990 mSDsluCounter, 40752 mSDsCounter, 0 mSdLazyCounter, 12567 mSolverCounterSat, 1771 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97533.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29990 SdHoareTripleChecker+Valid, 45110 SdHoareTripleChecker+Invalid, 14343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 201.72ms SdHoareTripleChecker+Time, 1771 IncrementalHoareTripleChecker+Valid, 12567 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107565.41ms IncrementalHoareTripleChecker+Time [2021-11-07 12:47:19,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29990 Valid, 45110 Invalid, 14343 Unknown, 0 Unchecked, 201.72ms Time], IncrementalHoareTripleChecker [1771 Valid, 12567 Invalid, 5 Unknown, 0 Unchecked, 107565.41ms Time] [2021-11-07 12:47:19,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28328 states. [2021-11-07 12:47:20,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28328 to 12040. [2021-11-07 12:47:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12040 states, 10463 states have (on average 1.3550606900506548) internal successors, (14178), 10807 states have internal predecessors, (14178), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-07 12:47:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12040 states to 12040 states and 16526 transitions. [2021-11-07 12:47:21,026 INFO L78 Accepts]: Start accepts. Automaton has 12040 states and 16526 transitions. Word has length 151 [2021-11-07 12:47:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:47:21,026 INFO L470 AbstractCegarLoop]: Abstraction has 12040 states and 16526 transitions. [2021-11-07 12:47:21,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 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) [2021-11-07 12:47:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand 12040 states and 16526 transitions. [2021-11-07 12:47:21,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-07 12:47:21,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:47:21,032 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:47:21,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 12:47:21,033 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:47:21,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:47:21,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1732425486, now seen corresponding path program 1 times [2021-11-07 12:47:21,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:47:21,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633300943] [2021-11-07 12:47:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:21,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:47:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:47:21,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:47:21,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633300943] [2021-11-07 12:47:21,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633300943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:47:21,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:47:21,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:47:21,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971580377] [2021-11-07 12:47:21,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:47:21,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:47:21,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:47:21,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:47:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:47:21,211 INFO L87 Difference]: Start difference. First operand 12040 states and 16526 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2021-11-07 12:47:22,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:47:22,930 INFO L93 Difference]: Finished difference Result 26906 states and 36714 transitions. [2021-11-07 12:47:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:47:22,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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 158 [2021-11-07 12:47:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:47:22,972 INFO L225 Difference]: With dead ends: 26906 [2021-11-07 12:47:22,972 INFO L226 Difference]: Without dead ends: 14874 [2021-11-07 12:47:22,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:47:22,997 INFO L933 BasicCegarLoop]: 2116 mSDtfsCounter, 1230 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 5977 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.87ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.74ms IncrementalHoareTripleChecker+Time [2021-11-07 12:47:22,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 5977 Invalid, 24 Unknown, 0 Unchecked, 4.87ms Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 109.74ms Time] [2021-11-07 12:47:23,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14874 states. [2021-11-07 12:47:24,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14874 to 12044. [2021-11-07 12:47:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12044 states, 10467 states have (on average 1.354542848953855) internal successors, (14178), 10811 states have internal predecessors, (14178), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-07 12:47:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12044 states to 12044 states and 16526 transitions. [2021-11-07 12:47:24,101 INFO L78 Accepts]: Start accepts. Automaton has 12044 states and 16526 transitions. Word has length 158 [2021-11-07 12:47:24,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:47:24,101 INFO L470 AbstractCegarLoop]: Abstraction has 12044 states and 16526 transitions. [2021-11-07 12:47:24,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 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) [2021-11-07 12:47:24,102 INFO L276 IsEmpty]: Start isEmpty. Operand 12044 states and 16526 transitions. [2021-11-07 12:47:24,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-07 12:47:24,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:47:24,110 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:47:24,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 12:47:24,110 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:47:24,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:47:24,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1594391245, now seen corresponding path program 1 times [2021-11-07 12:47:24,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:47:24,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50443315] [2021-11-07 12:47:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:24,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:47:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:47:24,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:47:24,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50443315] [2021-11-07 12:47:24,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50443315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:47:24,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012039507] [2021-11-07 12:47:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:24,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:47:24,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:47:24,299 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) [2021-11-07 12:47:24,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 12:47:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:25,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 4756 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:47:25,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:47:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:47:25,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:47:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:47:25,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012039507] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 12:47:25,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 12:47:25,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-07 12:47:25,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763480264] [2021-11-07 12:47:25,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 12:47:25,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:47:25,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:47:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:47:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:47:25,849 INFO L87 Difference]: Start difference. First operand 12044 states and 16526 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-11-07 12:47:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:47:34,337 INFO L93 Difference]: Finished difference Result 24856 states and 34075 transitions. [2021-11-07 12:47:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:47:34,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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 168 [2021-11-07 12:47:34,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:47:34,373 INFO L225 Difference]: With dead ends: 24856 [2021-11-07 12:47:34,373 INFO L226 Difference]: Without dead ends: 12820 [2021-11-07 12:47:34,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.28ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:47:34,397 INFO L933 BasicCegarLoop]: 1874 mSDtfsCounter, 444 mSDsluCounter, 5376 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6690.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 7250 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.51ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7190.67ms IncrementalHoareTripleChecker+Time [2021-11-07 12:47:34,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 7250 Invalid, 280 Unknown, 0 Unchecked, 5.51ms Time], IncrementalHoareTripleChecker [52 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 7190.67ms Time] [2021-11-07 12:47:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12820 states. [2021-11-07 12:47:35,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12820 to 12798. [2021-11-07 12:47:35,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12798 states, 11221 states have (on average 1.349434096782818) internal successors, (15142), 11565 states have internal predecessors, (15142), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-07 12:47:35,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12798 states to 12798 states and 17490 transitions. [2021-11-07 12:47:35,662 INFO L78 Accepts]: Start accepts. Automaton has 12798 states and 17490 transitions. Word has length 168 [2021-11-07 12:47:35,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:47:35,663 INFO L470 AbstractCegarLoop]: Abstraction has 12798 states and 17490 transitions. [2021-11-07 12:47:35,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-11-07 12:47:35,663 INFO L276 IsEmpty]: Start isEmpty. Operand 12798 states and 17490 transitions. [2021-11-07 12:47:35,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-07 12:47:35,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:47:35,672 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:47:35,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-07 12:47:35,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 12:47:35,875 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:47:35,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:47:35,876 INFO L85 PathProgramCache]: Analyzing trace with hash -417753735, now seen corresponding path program 2 times [2021-11-07 12:47:35,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:47:35,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254782672] [2021-11-07 12:47:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:35,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:47:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 12:47:36,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:47:36,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254782672] [2021-11-07 12:47:36,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254782672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:47:36,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:47:36,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:47:36,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618715157] [2021-11-07 12:47:36,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:47:36,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:47:36,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:47:36,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:47:36,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:47:36,152 INFO L87 Difference]: Start difference. First operand 12798 states and 17490 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2021-11-07 12:47:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:47:38,303 INFO L93 Difference]: Finished difference Result 29222 states and 39698 transitions. [2021-11-07 12:47:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:47:38,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 172 [2021-11-07 12:47:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:47:38,341 INFO L225 Difference]: With dead ends: 29222 [2021-11-07 12:47:38,342 INFO L226 Difference]: Without dead ends: 16432 [2021-11-07 12:47:38,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:47:38,366 INFO L933 BasicCegarLoop]: 2118 mSDtfsCounter, 628 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 4033 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.03ms IncrementalHoareTripleChecker+Time [2021-11-07 12:47:38,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 4033 Invalid, 4 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 15.03ms Time] [2021-11-07 12:47:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16432 states. [2021-11-07 12:47:39,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16432 to 12804. [2021-11-07 12:47:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12804 states, 11227 states have (on average 1.34924735013806) internal successors, (15148), 11571 states have internal predecessors, (15148), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-07 12:47:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12804 states to 12804 states and 17496 transitions. [2021-11-07 12:47:39,725 INFO L78 Accepts]: Start accepts. Automaton has 12804 states and 17496 transitions. Word has length 172 [2021-11-07 12:47:39,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:47:39,726 INFO L470 AbstractCegarLoop]: Abstraction has 12804 states and 17496 transitions. [2021-11-07 12:47:39,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2021-11-07 12:47:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 12804 states and 17496 transitions. [2021-11-07 12:47:39,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-07 12:47:39,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:47:39,737 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:47:39,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 12:47:39,737 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:47:39,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:47:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash 63707790, now seen corresponding path program 1 times [2021-11-07 12:47:39,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:47:39,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359856685] [2021-11-07 12:47:39,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:39,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:47:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 12:47:40,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:47:40,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359856685] [2021-11-07 12:47:40,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359856685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:47:40,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:47:40,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:47:40,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057248856] [2021-11-07 12:47:40,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:47:40,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:47:40,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:47:40,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:47:40,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:47:40,018 INFO L87 Difference]: Start difference. First operand 12804 states and 17496 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-11-07 12:47:46,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:47:46,379 INFO L93 Difference]: Finished difference Result 44688 states and 60000 transitions. [2021-11-07 12:47:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 12:47:46,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 175 [2021-11-07 12:47:46,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:47:46,448 INFO L225 Difference]: With dead ends: 44688 [2021-11-07 12:47:46,449 INFO L226 Difference]: Without dead ends: 31892 [2021-11-07 12:47:46,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 40.47ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:47:46,478 INFO L933 BasicCegarLoop]: 2271 mSDtfsCounter, 4992 mSDsluCounter, 6870 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 297.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5004 SdHoareTripleChecker+Valid, 9141 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.48ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 349.97ms IncrementalHoareTripleChecker+Time [2021-11-07 12:47:46,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5004 Valid, 9141 Invalid, 340 Unknown, 0 Unchecked, 12.48ms Time], IncrementalHoareTripleChecker [105 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 349.97ms Time] [2021-11-07 12:47:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31892 states. [2021-11-07 12:47:47,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31892 to 12822. [2021-11-07 12:47:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12822 states, 11245 states have (on average 1.3486883059137393) internal successors, (15166), 11589 states have internal predecessors, (15166), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-07 12:47:47,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12822 states to 12822 states and 17514 transitions. [2021-11-07 12:47:47,954 INFO L78 Accepts]: Start accepts. Automaton has 12822 states and 17514 transitions. Word has length 175 [2021-11-07 12:47:47,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:47:47,954 INFO L470 AbstractCegarLoop]: Abstraction has 12822 states and 17514 transitions. [2021-11-07 12:47:47,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-11-07 12:47:47,955 INFO L276 IsEmpty]: Start isEmpty. Operand 12822 states and 17514 transitions. [2021-11-07 12:47:47,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-07 12:47:47,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:47:47,966 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:47:47,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 12:47:47,967 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:47:47,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:47:47,967 INFO L85 PathProgramCache]: Analyzing trace with hash 496091690, now seen corresponding path program 1 times [2021-11-07 12:47:47,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:47:47,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487965468] [2021-11-07 12:47:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:47,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:47:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 12:47:48,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:47:48,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487965468] [2021-11-07 12:47:48,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487965468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:47:48,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:47:48,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:47:48,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342716537] [2021-11-07 12:47:48,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:47:48,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:47:48,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:47:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:47:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:47:48,251 INFO L87 Difference]: Start difference. First operand 12822 states and 17514 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-11-07 12:47:55,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:47:55,175 INFO L93 Difference]: Finished difference Result 44888 states and 60264 transitions. [2021-11-07 12:47:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 12:47:55,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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 177 [2021-11-07 12:47:55,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:47:55,236 INFO L225 Difference]: With dead ends: 44888 [2021-11-07 12:47:55,237 INFO L226 Difference]: Without dead ends: 32074 [2021-11-07 12:47:55,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 42.25ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:47:55,267 INFO L933 BasicCegarLoop]: 2834 mSDtfsCounter, 3835 mSDsluCounter, 7206 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 362.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3847 SdHoareTripleChecker+Valid, 10040 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.82ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 427.85ms IncrementalHoareTripleChecker+Time [2021-11-07 12:47:55,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3847 Valid, 10040 Invalid, 400 Unknown, 0 Unchecked, 13.82ms Time], IncrementalHoareTripleChecker [84 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 427.85ms Time] [2021-11-07 12:47:55,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32074 states. [2021-11-07 12:47:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32074 to 12834. [2021-11-07 12:47:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12834 states, 11257 states have (on average 1.3483166030025762) internal successors, (15178), 11601 states have internal predecessors, (15178), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-07 12:47:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12834 states to 12834 states and 17526 transitions. [2021-11-07 12:47:56,789 INFO L78 Accepts]: Start accepts. Automaton has 12834 states and 17526 transitions. Word has length 177 [2021-11-07 12:47:56,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:47:56,789 INFO L470 AbstractCegarLoop]: Abstraction has 12834 states and 17526 transitions. [2021-11-07 12:47:56,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-11-07 12:47:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 12834 states and 17526 transitions. [2021-11-07 12:47:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-07 12:47:56,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:47:56,801 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:47:56,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 12:47:56,801 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:47:56,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:47:56,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1425931458, now seen corresponding path program 1 times [2021-11-07 12:47:56,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:47:56,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585145467] [2021-11-07 12:47:56,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:56,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:47:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 12:47:56,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:47:56,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585145467] [2021-11-07 12:47:56,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585145467] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:47:56,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040322658] [2021-11-07 12:47:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:47:56,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:47:56,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:47:56,984 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:47:56,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 12:47:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:47:58,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 4795 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 12:47:58,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:47:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 12:47:58,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:47:58,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040322658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:47:58,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:47:58,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 12:47:58,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114495998] [2021-11-07 12:47:58,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:47:58,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:47:58,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:47:58,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:47:58,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:47:58,325 INFO L87 Difference]: Start difference. First operand 12834 states and 17526 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-11-07 12:47:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:47:59,945 INFO L93 Difference]: Finished difference Result 25844 states and 35265 transitions. [2021-11-07 12:47:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:47:59,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 178 [2021-11-07 12:47:59,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:47:59,980 INFO L225 Difference]: With dead ends: 25844 [2021-11-07 12:47:59,980 INFO L226 Difference]: Without dead ends: 13018 [2021-11-07 12:48:00,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.42ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:48:00,003 INFO L933 BasicCegarLoop]: 1889 mSDtfsCounter, 54 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 164.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3760 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.25ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 202.51ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:00,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 3760 Invalid, 115 Unknown, 0 Unchecked, 3.25ms Time], IncrementalHoareTripleChecker [16 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 202.51ms Time] [2021-11-07 12:48:00,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13018 states. [2021-11-07 12:48:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13018 to 12622. [2021-11-07 12:48:01,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12622 states, 11045 states have (on average 1.345586238116795) internal successors, (14862), 11389 states have internal predecessors, (14862), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-07 12:48:01,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12622 states to 12622 states and 17210 transitions. [2021-11-07 12:48:01,515 INFO L78 Accepts]: Start accepts. Automaton has 12622 states and 17210 transitions. Word has length 178 [2021-11-07 12:48:01,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:01,515 INFO L470 AbstractCegarLoop]: Abstraction has 12622 states and 17210 transitions. [2021-11-07 12:48:01,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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) [2021-11-07 12:48:01,515 INFO L276 IsEmpty]: Start isEmpty. Operand 12622 states and 17210 transitions. [2021-11-07 12:48:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-07 12:48:01,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:01,526 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:48:01,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 12:48:01,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:48:01,726 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:48:01,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:01,727 INFO L85 PathProgramCache]: Analyzing trace with hash 455757734, now seen corresponding path program 1 times [2021-11-07 12:48:01,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:01,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303161887] [2021-11-07 12:48:01,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:01,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 12:48:02,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:02,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303161887] [2021-11-07 12:48:02,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303161887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:02,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:02,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 12:48:02,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555352046] [2021-11-07 12:48:02,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:02,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 12:48:02,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 12:48:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:48:02,463 INFO L87 Difference]: Start difference. First operand 12622 states and 17210 transitions. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 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) [2021-11-07 12:48:04,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:48:15,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:15,681 INFO L93 Difference]: Finished difference Result 34791 states and 46751 transitions. [2021-11-07 12:48:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-07 12:48:15,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 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 179 [2021-11-07 12:48:15,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:15,731 INFO L225 Difference]: With dead ends: 34791 [2021-11-07 12:48:15,732 INFO L226 Difference]: Without dead ends: 22177 [2021-11-07 12:48:15,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1484.99ms TimeCoverageRelationStatistics Valid=516, Invalid=1836, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 12:48:15,759 INFO L933 BasicCegarLoop]: 5233 mSDtfsCounter, 7856 mSDsluCounter, 25195 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 558 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6096.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7857 SdHoareTripleChecker+Valid, 30428 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.80ms SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7549.40ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:15,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7857 Valid, 30428 Invalid, 2656 Unknown, 0 Unchecked, 43.80ms Time], IncrementalHoareTripleChecker [558 Valid, 2097 Invalid, 1 Unknown, 0 Unchecked, 7549.40ms Time] [2021-11-07 12:48:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22177 states. [2021-11-07 12:48:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22177 to 12622. [2021-11-07 12:48:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12622 states, 11045 states have (on average 1.3434133091896785) internal successors, (14838), 11389 states have internal predecessors, (14838), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-07 12:48:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12622 states to 12622 states and 17186 transitions. [2021-11-07 12:48:17,219 INFO L78 Accepts]: Start accepts. Automaton has 12622 states and 17186 transitions. Word has length 179 [2021-11-07 12:48:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:17,220 INFO L470 AbstractCegarLoop]: Abstraction has 12622 states and 17186 transitions. [2021-11-07 12:48:17,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 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) [2021-11-07 12:48:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 12622 states and 17186 transitions. [2021-11-07 12:48:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-07 12:48:17,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:17,231 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:48:17,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-07 12:48:17,231 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:48:17,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1348380585, now seen corresponding path program 1 times [2021-11-07 12:48:17,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:17,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969183690] [2021-11-07 12:48:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:17,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 12:48:17,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:17,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969183690] [2021-11-07 12:48:17,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969183690] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:48:17,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899465412] [2021-11-07 12:48:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:17,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:48:17,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:48:17,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:48:17,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 12:48:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:18,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 4851 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 12:48:18,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:48:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 12:48:18,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:48:18,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899465412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:18,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:48:18,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-07 12:48:18,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436886661] [2021-11-07 12:48:18,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:18,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:48:18,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:18,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:48:18,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:48:18,854 INFO L87 Difference]: Start difference. First operand 12622 states and 17186 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 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) [2021-11-07 12:48:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:20,757 INFO L93 Difference]: Finished difference Result 26972 states and 36609 transitions. [2021-11-07 12:48:20,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:48:20,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 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 184 [2021-11-07 12:48:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:20,796 INFO L225 Difference]: With dead ends: 26972 [2021-11-07 12:48:20,797 INFO L226 Difference]: Without dead ends: 14358 [2021-11-07 12:48:20,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 42.38ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-07 12:48:20,822 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 885 mSDsluCounter, 7885 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 9996 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.43ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.41ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:20,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 9996 Invalid, 52 Unknown, 0 Unchecked, 6.43ms Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 136.41ms Time] [2021-11-07 12:48:20,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14358 states. [2021-11-07 12:48:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14358 to 12628. [2021-11-07 12:48:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12628 states, 11051 states have (on average 1.3428648991041534) internal successors, (14840), 11395 states have internal predecessors, (14840), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-07 12:48:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12628 states to 12628 states and 17188 transitions. [2021-11-07 12:48:22,238 INFO L78 Accepts]: Start accepts. Automaton has 12628 states and 17188 transitions. Word has length 184 [2021-11-07 12:48:22,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:22,238 INFO L470 AbstractCegarLoop]: Abstraction has 12628 states and 17188 transitions. [2021-11-07 12:48:22,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 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) [2021-11-07 12:48:22,239 INFO L276 IsEmpty]: Start isEmpty. Operand 12628 states and 17188 transitions. [2021-11-07 12:48:22,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-07 12:48:22,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:22,246 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:48:22,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 12:48:22,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-07 12:48:22,449 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:48:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:22,450 INFO L85 PathProgramCache]: Analyzing trace with hash 98537875, now seen corresponding path program 1 times [2021-11-07 12:48:22,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:22,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343444139] [2021-11-07 12:48:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:22,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 12:48:34,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:34,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343444139] [2021-11-07 12:48:34,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343444139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:34,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:34,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 12:48:34,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085119267] [2021-11-07 12:48:34,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:34,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 12:48:34,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 12:48:34,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-07 12:48:34,077 INFO L87 Difference]: Start difference. First operand 12628 states and 17188 transitions. Second operand has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 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) [2021-11-07 12:48:36,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:48:38,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:48:40,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:49:21,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:49:23,074 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:49:25,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:49:27,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:49:29,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:49:32,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:50:00,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:50:01,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:50:11,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-07 12:50:15,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:50:15,253 INFO L93 Difference]: Finished difference Result 28811 states and 38919 transitions. [2021-11-07 12:50:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-07 12:50:15,254 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 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 184 [2021-11-07 12:50:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:50:15,287 INFO L225 Difference]: With dead ends: 28811 [2021-11-07 12:50:15,288 INFO L226 Difference]: Without dead ends: 16191 [2021-11-07 12:50:15,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1816.72ms TimeCoverageRelationStatistics Valid=398, Invalid=1162, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 12:50:15,309 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 4658 mSDsluCounter, 33764 mSDsCounter, 0 mSdLazyCounter, 6311 mSolverCounterSat, 448 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88214.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 38380 SdHoareTripleChecker+Invalid, 6768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.59ms SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 6311 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96434.50ms IncrementalHoareTripleChecker+Time [2021-11-07 12:50:15,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4659 Valid, 38380 Invalid, 6768 Unknown, 0 Unchecked, 75.59ms Time], IncrementalHoareTripleChecker [448 Valid, 6311 Invalid, 9 Unknown, 0 Unchecked, 96434.50ms Time] [2021-11-07 12:50:15,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16191 states. [2021-11-07 12:50:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16191 to 12786. [2021-11-07 12:50:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12786 states, 11209 states have (on average 1.339816219109644) internal successors, (15018), 11553 states have internal predecessors, (15018), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-07 12:50:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12786 states to 12786 states and 17366 transitions. [2021-11-07 12:50:16,734 INFO L78 Accepts]: Start accepts. Automaton has 12786 states and 17366 transitions. Word has length 184 [2021-11-07 12:50:16,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:50:16,734 INFO L470 AbstractCegarLoop]: Abstraction has 12786 states and 17366 transitions. [2021-11-07 12:50:16,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 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) [2021-11-07 12:50:16,734 INFO L276 IsEmpty]: Start isEmpty. Operand 12786 states and 17366 transitions. [2021-11-07 12:50:16,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-07 12:50:16,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:50:16,744 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:50:16,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 12:50:16,744 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:50:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:50:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash 387159323, now seen corresponding path program 1 times [2021-11-07 12:50:16,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:50:16,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787990882] [2021-11-07 12:50:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:50:16,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:50:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 12:50:34,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:50:34,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787990882] [2021-11-07 12:50:34,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787990882] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:50:34,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448653867] [2021-11-07 12:50:34,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:50:34,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:50:34,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:50:34,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:50:34,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Killed by 15