./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--net--can--usb--ems_usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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--net--can--usb--ems_usb.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 be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 03:36:52,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 03:36:52,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 03:36:52,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 03:36:52,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 03:36:52,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 03:36:52,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 03:36:52,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 03:36:52,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 03:36:52,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 03:36:52,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 03:36:52,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 03:36:52,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 03:36:52,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 03:36:52,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 03:36:52,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 03:36:52,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 03:36:52,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 03:36:52,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 03:36:52,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 03:36:52,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 03:36:52,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 03:36:52,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 03:36:52,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 03:36:52,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 03:36:52,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 03:36:52,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 03:36:52,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 03:36:52,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 03:36:52,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 03:36:52,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 03:36:52,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 03:36:52,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 03:36:52,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 03:36:52,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 03:36:52,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 03:36:52,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 03:36:52,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 03:36:52,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 03:36:52,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 03:36:52,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 03:36:52,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 03:36:52,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 03:36:52,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 03:36:52,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 03:36:52,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 03:36:52,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 03:36:52,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 03:36:52,135 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 03:36:52,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 03:36:52,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 03:36:52,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 03:36:52,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 03:36:52,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 03:36:52,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 03:36:52,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 03:36:52,136 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 03:36:52,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 03:36:52,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 03:36:52,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 03:36:52,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 03:36:52,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:36:52,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 03:36:52,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 03:36:52,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 03:36:52,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 03:36:52,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 03:36:52,138 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 03:36:52,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 03:36:52,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 03:36:52,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 03:36:52,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be936ec9376452d086f72aa92ac4fe7deb233a068e40e0ed8f478fbc228d19b6 [2021-11-04 03:36:52,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 03:36:52,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 03:36:52,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 03:36:52,355 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 03:36:52,356 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 03:36:52,357 INFO L432 ainManager$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--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2021-11-04 03:36:52,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c877ec0a2/434a5503ad9e422090a0969727d876ec/FLAGc732e57db [2021-11-04 03:36:52,963 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 03:36:52,964 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--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2021-11-04 03:36:52,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c877ec0a2/434a5503ad9e422090a0969727d876ec/FLAGc732e57db [2021-11-04 03:36:53,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c877ec0a2/434a5503ad9e422090a0969727d876ec [2021-11-04 03:36:53,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 03:36:53,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 03:36:53,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 03:36:53,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 03:36:53,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 03:36:53,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:36:53" (1/1) ... [2021-11-04 03:36:53,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23eb107b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:53, skipping insertion in model container [2021-11-04 03:36:53,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:36:53" (1/1) ... [2021-11-04 03:36:53,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 03:36:53,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 03:36:53,897 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--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2021-11-04 03:36:54,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:36:54,235 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 03:36:54,333 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--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2021-11-04 03:36:54,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:36:54,502 INFO L208 MainTranslator]: Completed translation [2021-11-04 03:36:54,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54 WrapperNode [2021-11-04 03:36:54,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 03:36:54,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 03:36:54,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 03:36:54,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 03:36:54,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54" (1/1) ... [2021-11-04 03:36:54,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54" (1/1) ... [2021-11-04 03:36:54,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 03:36:54,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 03:36:54,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 03:36:54,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 03:36:54,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54" (1/1) ... [2021-11-04 03:36:54,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54" (1/1) ... [2021-11-04 03:36:54,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54" (1/1) ... [2021-11-04 03:36:54,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54" (1/1) ... [2021-11-04 03:36:54,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54" (1/1) ... [2021-11-04 03:36:54,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54" (1/1) ... [2021-11-04 03:36:54,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54" (1/1) ... [2021-11-04 03:36:54,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 03:36:54,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 03:36:54,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 03:36:54,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 03:36:54,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54" (1/1) ... [2021-11-04 03:36:54,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:36:54,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:36:54,898 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) [2021-11-04 03:36:54,905 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 [2021-11-04 03:36:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 03:36:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2021-11-04 03:36:54,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2021-11-04 03:36:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-11-04 03:36:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-11-04 03:36:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 03:36:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 03:36:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 03:36:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_bulk_callback [2021-11-04 03:36:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_bulk_callback [2021-11-04 03:36:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-04 03:36:54,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-04 03:36:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 03:36:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 03:36:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 03:36:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 03:36:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 03:36:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 03:36:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 03:36:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_interrupt_callback [2021-11-04 03:36:54,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_interrupt_callback [2021-11-04 03:36:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 03:36:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 03:36:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 03:36:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 03:36:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 03:36:54,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 03:36:56,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 03:36:56,573 INFO L299 CfgBuilder]: Removed 593 assume(true) statements. [2021-11-04 03:36:56,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:36:56 BoogieIcfgContainer [2021-11-04 03:36:56,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 03:36:56,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 03:36:56,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 03:36:56,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 03:36:56,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:36:53" (1/3) ... [2021-11-04 03:36:56,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260d1880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:36:56, skipping insertion in model container [2021-11-04 03:36:56,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:36:54" (2/3) ... [2021-11-04 03:36:56,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260d1880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:36:56, skipping insertion in model container [2021-11-04 03:36:56,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:36:56" (3/3) ... [2021-11-04 03:36:56,581 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2021-11-04 03:36:56,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 03:36:56,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-04 03:36:56,628 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 03:36:56,634 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 [2021-11-04 03:36:56,635 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-04 03:36:56,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 620 states, 597 states have (on average 1.4321608040201006) internal successors, (855), 604 states have internal predecessors, (855), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-04 03:36:56,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-04 03:36:56,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:36:56,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:36:56,666 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)] === [2021-11-04 03:36:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:36:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash 990042253, now seen corresponding path program 1 times [2021-11-04 03:36:56,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:36:56,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848928831] [2021-11-04 03:36:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:36:56,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:36:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:36:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:36:57,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:36:57,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848928831] [2021-11-04 03:36:57,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848928831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:36:57,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:36:57,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:36:57,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246342696] [2021-11-04 03:36:57,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:36:57,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:36:57,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:36:57,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:36:57,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:36:57,104 INFO L87 Difference]: Start difference. First operand has 620 states, 597 states have (on average 1.4321608040201006) internal successors, (855), 604 states have internal predecessors, (855), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) 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) [2021-11-04 03:37:04,555 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 [] [2021-11-04 03:37:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:37:05,260 INFO L93 Difference]: Finished difference Result 1806 states and 2584 transitions. [2021-11-04 03:37:05,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:37:05,263 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 [2021-11-04 03:37:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:37:05,278 INFO L225 Difference]: With dead ends: 1806 [2021-11-04 03:37:05,278 INFO L226 Difference]: Without dead ends: 1173 [2021-11-04 03:37:05,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:05,298 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 804 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7518.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.36ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8008.68ms IncrementalHoareTripleChecker+Time [2021-11-04 03:37:05,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 69 Invalid, 1642 Unknown, 0 Unchecked, 11.36ms Time], IncrementalHoareTripleChecker [3 Valid, 1638 Invalid, 1 Unknown, 0 Unchecked, 8008.68ms Time] [2021-11-04 03:37:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-04 03:37:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2021-11-04 03:37:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1134 states have (on average 1.3915343915343916) internal successors, (1578), 1142 states have internal predecessors, (1578), 22 states have call successors, (22), 12 states have call predecessors, (22), 12 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-04 03:37:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1622 transitions. [2021-11-04 03:37:05,408 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1622 transitions. Word has length 17 [2021-11-04 03:37:05,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:37:05,408 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 1622 transitions. [2021-11-04 03:37:05,409 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) [2021-11-04 03:37:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1622 transitions. [2021-11-04 03:37:05,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-04 03:37:05,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:37:05,413 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] [2021-11-04 03:37:05,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 03:37:05,413 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)] === [2021-11-04 03:37:05,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:37:05,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1542514015, now seen corresponding path program 1 times [2021-11-04 03:37:05,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:37:05,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958729099] [2021-11-04 03:37:05,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:37:05,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:37:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:37:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:37:05,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:37:05,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958729099] [2021-11-04 03:37:05,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958729099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:37:05,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:37:05,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:37:05,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822860554] [2021-11-04 03:37:05,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:37:05,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:37:05,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:37:05,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:37:05,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:05,587 INFO L87 Difference]: Start difference. First operand 1173 states and 1622 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) [2021-11-04 03:37:06,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:08,682 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:11,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:37:11,865 INFO L93 Difference]: Finished difference Result 3491 states and 4901 transitions. [2021-11-04 03:37:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:37:11,866 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 [2021-11-04 03:37:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:37:11,879 INFO L225 Difference]: With dead ends: 3491 [2021-11-04 03:37:11,879 INFO L226 Difference]: Without dead ends: 2331 [2021-11-04 03:37:11,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:11,883 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 814 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5733.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6145.14ms IncrementalHoareTripleChecker+Time [2021-11-04 03:37:11,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 66 Invalid, 1622 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [14 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 6145.14ms Time] [2021-11-04 03:37:11,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2331 states. [2021-11-04 03:37:11,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2331 to 2319. [2021-11-04 03:37:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2246 states have (on average 1.3864648263579697) internal successors, (3114), 2258 states have internal predecessors, (3114), 44 states have call successors, (44), 24 states have call predecessors, (44), 24 states have return successors, (66), 40 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-04 03:37:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3224 transitions. [2021-11-04 03:37:11,957 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3224 transitions. Word has length 24 [2021-11-04 03:37:11,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:37:11,957 INFO L470 AbstractCegarLoop]: Abstraction has 2319 states and 3224 transitions. [2021-11-04 03:37:11,958 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) [2021-11-04 03:37:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3224 transitions. [2021-11-04 03:37:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-04 03:37:11,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:37:11,963 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] [2021-11-04 03:37:11,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 03:37:11,964 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:37:11,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:37:11,964 INFO L85 PathProgramCache]: Analyzing trace with hash -573293837, now seen corresponding path program 1 times [2021-11-04 03:37:11,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:37:11,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052647510] [2021-11-04 03:37:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:37:11,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:37:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:37:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:37:12,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:37:12,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052647510] [2021-11-04 03:37:12,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052647510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:37:12,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:37:12,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:37:12,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247473377] [2021-11-04 03:37:12,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:37:12,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:37:12,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:37:12,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:37:12,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:12,088 INFO L87 Difference]: Start difference. First operand 2319 states and 3224 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) [2021-11-04 03:37:14,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:37:14,964 INFO L93 Difference]: Finished difference Result 2319 states and 3224 transitions. [2021-11-04 03:37:14,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:37:14,965 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 [2021-11-04 03:37:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:37:14,972 INFO L225 Difference]: With dead ends: 2319 [2021-11-04 03:37:14,972 INFO L226 Difference]: Without dead ends: 2317 [2021-11-04 03:37:14,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:14,974 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 812 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2545.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2777.76ms IncrementalHoareTripleChecker+Time [2021-11-04 03:37:14,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 22 Invalid, 813 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [0 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 2777.76ms Time] [2021-11-04 03:37:14,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2021-11-04 03:37:15,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2317. [2021-11-04 03:37:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 2245 states have (on average 1.3861915367483295) internal successors, (3112), 2256 states have internal predecessors, (3112), 44 states have call successors, (44), 24 states have call predecessors, (44), 24 states have return successors, (66), 40 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-04 03:37:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3222 transitions. [2021-11-04 03:37:15,027 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3222 transitions. Word has length 25 [2021-11-04 03:37:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:37:15,027 INFO L470 AbstractCegarLoop]: Abstraction has 2317 states and 3222 transitions. [2021-11-04 03:37:15,027 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) [2021-11-04 03:37:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3222 transitions. [2021-11-04 03:37:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-04 03:37:15,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:37:15,028 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] [2021-11-04 03:37:15,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 03:37:15,028 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:37:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:37:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash -592239381, now seen corresponding path program 1 times [2021-11-04 03:37:15,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:37:15,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495979866] [2021-11-04 03:37:15,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:37:15,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:37:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:37:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:37:15,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:37:15,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495979866] [2021-11-04 03:37:15,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495979866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:37:15,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:37:15,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:37:15,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299669293] [2021-11-04 03:37:15,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:37:15,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:37:15,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:37:15,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:37:15,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:15,094 INFO L87 Difference]: Start difference. First operand 2317 states and 3222 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) [2021-11-04 03:37:18,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:37:18,854 INFO L93 Difference]: Finished difference Result 2317 states and 3222 transitions. [2021-11-04 03:37:18,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:37:18,854 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 [2021-11-04 03:37:18,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:37:18,862 INFO L225 Difference]: With dead ends: 2317 [2021-11-04 03:37:18,862 INFO L226 Difference]: Without dead ends: 2315 [2021-11-04 03:37:18,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:18,864 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 809 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3512.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3695.94ms IncrementalHoareTripleChecker+Time [2021-11-04 03:37:18,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 22 Invalid, 811 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [0 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 3695.94ms Time] [2021-11-04 03:37:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2021-11-04 03:37:18,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2315. [2021-11-04 03:37:18,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 2244 states have (on average 1.3859180035650625) internal successors, (3110), 2254 states have internal predecessors, (3110), 44 states have call successors, (44), 24 states have call predecessors, (44), 24 states have return successors, (66), 40 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-04 03:37:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 3220 transitions. [2021-11-04 03:37:18,972 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 3220 transitions. Word has length 26 [2021-11-04 03:37:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:37:18,972 INFO L470 AbstractCegarLoop]: Abstraction has 2315 states and 3220 transitions. [2021-11-04 03:37:18,972 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) [2021-11-04 03:37:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 3220 transitions. [2021-11-04 03:37:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-04 03:37:18,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:37:18,973 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] [2021-11-04 03:37:18,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 03:37:18,974 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:37:18,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:37:18,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1179551235, now seen corresponding path program 1 times [2021-11-04 03:37:18,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:37:18,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775309030] [2021-11-04 03:37:18,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:37:18,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:37:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:37:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:37:19,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:37:19,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775309030] [2021-11-04 03:37:19,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775309030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:37:19,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:37:19,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:37:19,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604504254] [2021-11-04 03:37:19,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:37:19,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:37:19,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:37:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:37:19,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:19,071 INFO L87 Difference]: Start difference. First operand 2315 states and 3220 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) [2021-11-04 03:37:21,992 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 [] [2021-11-04 03:37:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:37:24,211 INFO L93 Difference]: Finished difference Result 4366 states and 6117 transitions. [2021-11-04 03:37:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:37:24,212 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 [2021-11-04 03:37:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:37:24,262 INFO L225 Difference]: With dead ends: 4366 [2021-11-04 03:37:24,266 INFO L226 Difference]: Without dead ends: 4364 [2021-11-04 03:37:24,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.36ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:24,270 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 728 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4686.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.27ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5017.08ms IncrementalHoareTripleChecker+Time [2021-11-04 03:37:24,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 55 Invalid, 1604 Unknown, 0 Unchecked, 4.27ms Time], IncrementalHoareTripleChecker [1 Valid, 1602 Invalid, 1 Unknown, 0 Unchecked, 5017.08ms Time] [2021-11-04 03:37:24,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2021-11-04 03:37:24,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 4326. [2021-11-04 03:37:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4187 states have (on average 1.3981370909959399) internal successors, (5854), 4205 states have internal predecessors, (5854), 88 states have call successors, (88), 48 states have call predecessors, (88), 48 states have return successors, (132), 80 states have call predecessors, (132), 88 states have call successors, (132) [2021-11-04 03:37:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 6074 transitions. [2021-11-04 03:37:24,413 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 6074 transitions. Word has length 27 [2021-11-04 03:37:24,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:37:24,414 INFO L470 AbstractCegarLoop]: Abstraction has 4326 states and 6074 transitions. [2021-11-04 03:37:24,414 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) [2021-11-04 03:37:24,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 6074 transitions. [2021-11-04 03:37:24,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-04 03:37:24,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:37:24,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:37:24,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 03:37:24,416 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:37:24,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:37:24,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2088617781, now seen corresponding path program 1 times [2021-11-04 03:37:24,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:37:24,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286564631] [2021-11-04 03:37:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:37:24,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:37:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:37:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:37:24,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:37:24,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286564631] [2021-11-04 03:37:24,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286564631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:37:24,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:37:24,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:37:24,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743821623] [2021-11-04 03:37:24,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:37:24,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:37:24,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:37:24,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:37:24,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:24,505 INFO L87 Difference]: Start difference. First operand 4326 states and 6074 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-11-04 03:37:25,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:27,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:37:27,852 INFO L93 Difference]: Finished difference Result 4326 states and 6074 transitions. [2021-11-04 03:37:27,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:37:27,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-11-04 03:37:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:37:27,868 INFO L225 Difference]: With dead ends: 4326 [2021-11-04 03:37:27,868 INFO L226 Difference]: Without dead ends: 4317 [2021-11-04 03:37:27,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:27,872 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 805 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3039.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3242.97ms IncrementalHoareTripleChecker+Time [2021-11-04 03:37:27,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 22 Invalid, 809 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [0 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 3242.97ms Time] [2021-11-04 03:37:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2021-11-04 03:37:28,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 4317. [2021-11-04 03:37:28,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4317 states, 4179 states have (on average 1.39770279971285) internal successors, (5841), 4196 states have internal predecessors, (5841), 88 states have call successors, (88), 48 states have call predecessors, (88), 48 states have return successors, (132), 80 states have call predecessors, (132), 88 states have call successors, (132) [2021-11-04 03:37:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4317 states to 4317 states and 6061 transitions. [2021-11-04 03:37:28,015 INFO L78 Accepts]: Start accepts. Automaton has 4317 states and 6061 transitions. Word has length 28 [2021-11-04 03:37:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:37:28,016 INFO L470 AbstractCegarLoop]: Abstraction has 4317 states and 6061 transitions. [2021-11-04 03:37:28,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-11-04 03:37:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4317 states and 6061 transitions. [2021-11-04 03:37:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-04 03:37:28,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:37:28,020 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:37:28,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 03:37:28,021 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:37:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:37:28,021 INFO L85 PathProgramCache]: Analyzing trace with hash 578971499, now seen corresponding path program 1 times [2021-11-04 03:37:28,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:37:28,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139603263] [2021-11-04 03:37:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:37:28,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:37:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:37:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:37:28,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:37:28,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139603263] [2021-11-04 03:37:28,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139603263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:37:28,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:37:28,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:37:28,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826380743] [2021-11-04 03:37:28,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:37:28,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:37:28,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:37:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:37:28,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:28,105 INFO L87 Difference]: Start difference. First operand 4317 states and 6061 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:37:31,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:32,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:34,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:37:34,293 INFO L93 Difference]: Finished difference Result 9325 states and 13026 transitions. [2021-11-04 03:37:34,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:37:34,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-04 03:37:34,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:37:34,313 INFO L225 Difference]: With dead ends: 9325 [2021-11-04 03:37:34,314 INFO L226 Difference]: Without dead ends: 5021 [2021-11-04 03:37:34,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:34,325 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 182 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5717.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6029.83ms IncrementalHoareTripleChecker+Time [2021-11-04 03:37:34,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 44 Invalid, 1609 Unknown, 0 Unchecked, 3.70ms Time], IncrementalHoareTripleChecker [2 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 6029.83ms Time] [2021-11-04 03:37:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5021 states. [2021-11-04 03:37:34,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5021 to 5005. [2021-11-04 03:37:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5005 states, 4867 states have (on average 1.3842202588863777) internal successors, (6737), 4884 states have internal predecessors, (6737), 88 states have call successors, (88), 48 states have call predecessors, (88), 48 states have return successors, (132), 80 states have call predecessors, (132), 88 states have call successors, (132) [2021-11-04 03:37:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5005 states to 5005 states and 6957 transitions. [2021-11-04 03:37:34,510 INFO L78 Accepts]: Start accepts. Automaton has 5005 states and 6957 transitions. Word has length 52 [2021-11-04 03:37:34,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:37:34,510 INFO L470 AbstractCegarLoop]: Abstraction has 5005 states and 6957 transitions. [2021-11-04 03:37:34,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:37:34,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5005 states and 6957 transitions. [2021-11-04 03:37:34,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-04 03:37:34,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:37:34,513 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:37:34,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 03:37:34,514 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)] === [2021-11-04 03:37:34,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:37:34,515 INFO L85 PathProgramCache]: Analyzing trace with hash -587987276, now seen corresponding path program 1 times [2021-11-04 03:37:34,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:37:34,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194592515] [2021-11-04 03:37:34,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:37:34,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:37:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:37:34,623 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:37:34,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:37:34,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194592515] [2021-11-04 03:37:34,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194592515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:37:34,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:37:34,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:37:34,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004604674] [2021-11-04 03:37:34,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:37:34,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:37:34,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:37:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:37:34,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:34,626 INFO L87 Difference]: Start difference. First operand 5005 states and 6957 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-04 03:37:35,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:36,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:40,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:42,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:37:42,294 INFO L93 Difference]: Finished difference Result 10797 states and 14994 transitions. [2021-11-04 03:37:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:37:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-04 03:37:42,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:37:42,336 INFO L225 Difference]: With dead ends: 10797 [2021-11-04 03:37:42,336 INFO L226 Difference]: Without dead ends: 5805 [2021-11-04 03:37:42,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:42,345 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 187 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7126.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.63ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7516.81ms IncrementalHoareTripleChecker+Time [2021-11-04 03:37:42,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 44 Invalid, 1783 Unknown, 0 Unchecked, 14.63ms Time], IncrementalHoareTripleChecker [7 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 7516.81ms Time] [2021-11-04 03:37:42,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5805 states. [2021-11-04 03:37:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5805 to 5789. [2021-11-04 03:37:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5789 states, 5651 states have (on average 1.3748009201911167) internal successors, (7769), 5668 states have internal predecessors, (7769), 88 states have call successors, (88), 48 states have call predecessors, (88), 48 states have return successors, (132), 80 states have call predecessors, (132), 88 states have call successors, (132) [2021-11-04 03:37:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5789 states to 5789 states and 7989 transitions. [2021-11-04 03:37:42,524 INFO L78 Accepts]: Start accepts. Automaton has 5789 states and 7989 transitions. Word has length 62 [2021-11-04 03:37:42,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:37:42,524 INFO L470 AbstractCegarLoop]: Abstraction has 5789 states and 7989 transitions. [2021-11-04 03:37:42,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-04 03:37:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5789 states and 7989 transitions. [2021-11-04 03:37:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-04 03:37:42,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:37:42,527 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] [2021-11-04 03:37:42,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 03:37:42,530 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)] === [2021-11-04 03:37:42,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:37:42,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1736719260, now seen corresponding path program 1 times [2021-11-04 03:37:42,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:37:42,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662241486] [2021-11-04 03:37:42,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:37:42,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:37:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:37:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:37:42,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:37:42,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662241486] [2021-11-04 03:37:42,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662241486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:37:42,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:37:42,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:37:42,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561549333] [2021-11-04 03:37:42,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:37:42,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:37:42,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:37:42,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:37:42,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:42,581 INFO L87 Difference]: Start difference. First operand 5789 states and 7989 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:37:45,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:48,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:37:48,686 INFO L93 Difference]: Finished difference Result 15622 states and 21764 transitions. [2021-11-04 03:37:48,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:37:48,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-04 03:37:48,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:37:48,732 INFO L225 Difference]: With dead ends: 15622 [2021-11-04 03:37:48,733 INFO L226 Difference]: Without dead ends: 9846 [2021-11-04 03:37:48,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:48,746 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 677 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5514.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.32ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5896.87ms IncrementalHoareTripleChecker+Time [2021-11-04 03:37:48,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 66 Invalid, 2218 Unknown, 0 Unchecked, 4.32ms Time], IncrementalHoareTripleChecker [3 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 5896.87ms Time] [2021-11-04 03:37:48,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9846 states. [2021-11-04 03:37:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9846 to 9809. [2021-11-04 03:37:48,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9809 states, 9535 states have (on average 1.3938122705820661) internal successors, (13290), 9568 states have internal predecessors, (13290), 176 states have call successors, (176), 96 states have call predecessors, (176), 96 states have return successors, (264), 160 states have call predecessors, (264), 176 states have call successors, (264) [2021-11-04 03:37:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9809 states to 9809 states and 13730 transitions. [2021-11-04 03:37:49,015 INFO L78 Accepts]: Start accepts. Automaton has 9809 states and 13730 transitions. Word has length 65 [2021-11-04 03:37:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:37:49,016 INFO L470 AbstractCegarLoop]: Abstraction has 9809 states and 13730 transitions. [2021-11-04 03:37:49,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:37:49,017 INFO L276 IsEmpty]: Start isEmpty. Operand 9809 states and 13730 transitions. [2021-11-04 03:37:49,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-04 03:37:49,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:37:49,020 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:37:49,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 03:37:49,021 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)] === [2021-11-04 03:37:49,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:37:49,021 INFO L85 PathProgramCache]: Analyzing trace with hash 477742688, now seen corresponding path program 1 times [2021-11-04 03:37:49,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:37:49,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649637661] [2021-11-04 03:37:49,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:37:49,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:37:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:37:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 03:37:49,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:37:49,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649637661] [2021-11-04 03:37:49,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649637661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:37:49,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:37:49,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:37:49,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761745871] [2021-11-04 03:37:49,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:37:49,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:37:49,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:37:49,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:37:49,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:49,087 INFO L87 Difference]: Start difference. First operand 9809 states and 13730 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-11-04 03:37:50,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:52,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:55,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:37:57,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:37:57,893 INFO L93 Difference]: Finished difference Result 24089 states and 33987 transitions. [2021-11-04 03:37:57,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:37:57,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 74 [2021-11-04 03:37:57,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:37:57,930 INFO L225 Difference]: With dead ends: 24089 [2021-11-04 03:37:57,930 INFO L226 Difference]: Without dead ends: 14293 [2021-11-04 03:37:57,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:57,948 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 644 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8136.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.86ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8522.46ms IncrementalHoareTripleChecker+Time [2021-11-04 03:37:57,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 48 Invalid, 1666 Unknown, 0 Unchecked, 3.86ms Time], IncrementalHoareTripleChecker [8 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 8522.46ms Time] [2021-11-04 03:37:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14293 states. [2021-11-04 03:37:58,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14293 to 14277. [2021-11-04 03:37:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14277 states, 13779 states have (on average 1.4080121924667972) internal successors, (19401), 13844 states have internal predecessors, (19401), 304 states have call successors, (304), 192 states have call predecessors, (304), 192 states have return successors, (456), 272 states have call predecessors, (456), 304 states have call successors, (456) [2021-11-04 03:37:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14277 states to 14277 states and 20161 transitions. [2021-11-04 03:37:58,313 INFO L78 Accepts]: Start accepts. Automaton has 14277 states and 20161 transitions. Word has length 74 [2021-11-04 03:37:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:37:58,313 INFO L470 AbstractCegarLoop]: Abstraction has 14277 states and 20161 transitions. [2021-11-04 03:37:58,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-11-04 03:37:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 14277 states and 20161 transitions. [2021-11-04 03:37:58,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-04 03:37:58,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:37:58,318 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] [2021-11-04 03:37:58,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-04 03:37:58,318 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)] === [2021-11-04 03:37:58,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:37:58,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1414744033, now seen corresponding path program 1 times [2021-11-04 03:37:58,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:37:58,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641159210] [2021-11-04 03:37:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:37:58,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:37:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:37:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 03:37:58,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:37:58,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641159210] [2021-11-04 03:37:58,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641159210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:37:58,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:37:58,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:37:58,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114853812] [2021-11-04 03:37:58,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:37:58,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:37:58,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:37:58,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:37:58,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:37:58,400 INFO L87 Difference]: Start difference. First operand 14277 states and 20161 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-04 03:38:00,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:04,434 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 [] [2021-11-04 03:38:05,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:38:05,562 INFO L93 Difference]: Finished difference Result 22014 states and 30985 transitions. [2021-11-04 03:38:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:38:05,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 75 [2021-11-04 03:38:05,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:38:05,624 INFO L225 Difference]: With dead ends: 22014 [2021-11-04 03:38:05,625 INFO L226 Difference]: Without dead ends: 14309 [2021-11-04 03:38:05,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:38:05,644 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6545.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6843.76ms IncrementalHoareTripleChecker+Time [2021-11-04 03:38:05,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 44 Invalid, 1615 Unknown, 0 Unchecked, 5.18ms Time], IncrementalHoareTripleChecker [0 Valid, 1614 Invalid, 1 Unknown, 0 Unchecked, 6843.76ms Time] [2021-11-04 03:38:05,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14309 states. [2021-11-04 03:38:05,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14309 to 14293. [2021-11-04 03:38:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14293 states, 13795 states have (on average 1.4075389633925335) internal successors, (19417), 13860 states have internal predecessors, (19417), 304 states have call successors, (304), 192 states have call predecessors, (304), 192 states have return successors, (456), 272 states have call predecessors, (456), 304 states have call successors, (456) [2021-11-04 03:38:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14293 states to 14293 states and 20177 transitions. [2021-11-04 03:38:06,014 INFO L78 Accepts]: Start accepts. Automaton has 14293 states and 20177 transitions. Word has length 75 [2021-11-04 03:38:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:38:06,015 INFO L470 AbstractCegarLoop]: Abstraction has 14293 states and 20177 transitions. [2021-11-04 03:38:06,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-11-04 03:38:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand 14293 states and 20177 transitions. [2021-11-04 03:38:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-04 03:38:06,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:38:06,019 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] [2021-11-04 03:38:06,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-04 03:38:06,020 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)] === [2021-11-04 03:38:06,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:38:06,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1473234019, now seen corresponding path program 1 times [2021-11-04 03:38:06,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:38:06,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139405863] [2021-11-04 03:38:06,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:38:06,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:38:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:38:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 03:38:06,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:38:06,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139405863] [2021-11-04 03:38:06,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139405863] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:38:06,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223916122] [2021-11-04 03:38:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:38:06,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:38:06,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:38:06,093 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) [2021-11-04 03:38:06,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 03:38:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:38:06,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 03:38:06,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:38:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 03:38:06,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:38:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 03:38:06,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223916122] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:38:06,786 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:38:06,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-04 03:38:06,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968990089] [2021-11-04 03:38:06,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:38:06,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 03:38:06,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:38:06,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 03:38:06,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:38:06,789 INFO L87 Difference]: Start difference. First operand 14293 states and 20177 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2021-11-04 03:38:08,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:09,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:11,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:13,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:15,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:18,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:38:18,444 INFO L93 Difference]: Finished difference Result 22110 states and 31113 transitions. [2021-11-04 03:38:18,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 03:38:18,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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 77 [2021-11-04 03:38:18,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:38:18,478 INFO L225 Difference]: With dead ends: 22110 [2021-11-04 03:38:18,479 INFO L226 Difference]: Without dead ends: 14389 [2021-11-04 03:38:18,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 11.66ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:38:18,499 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10832.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11312.42ms IncrementalHoareTripleChecker+Time [2021-11-04 03:38:18,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 66 Invalid, 2430 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [5 Valid, 2424 Invalid, 1 Unknown, 0 Unchecked, 11312.42ms Time] [2021-11-04 03:38:18,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14389 states. [2021-11-04 03:38:18,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14389 to 14389. [2021-11-04 03:38:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14389 states, 13891 states have (on average 1.4047224821827082) internal successors, (19513), 13956 states have internal predecessors, (19513), 304 states have call successors, (304), 192 states have call predecessors, (304), 192 states have return successors, (456), 272 states have call predecessors, (456), 304 states have call successors, (456) [2021-11-04 03:38:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14389 states to 14389 states and 20273 transitions. [2021-11-04 03:38:18,899 INFO L78 Accepts]: Start accepts. Automaton has 14389 states and 20273 transitions. Word has length 77 [2021-11-04 03:38:18,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:38:18,899 INFO L470 AbstractCegarLoop]: Abstraction has 14389 states and 20273 transitions. [2021-11-04 03:38:18,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2021-11-04 03:38:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 14389 states and 20273 transitions. [2021-11-04 03:38:18,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-04 03:38:18,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:38:18,903 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:38:18,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-04 03:38:19,123 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,SelfDestructingSolverStorable11 [2021-11-04 03:38:19,123 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)] === [2021-11-04 03:38:19,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:38:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1263672529, now seen corresponding path program 2 times [2021-11-04 03:38:19,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:38:19,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056527837] [2021-11-04 03:38:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:38:19,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:38:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:38:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-04 03:38:19,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:38:19,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056527837] [2021-11-04 03:38:19,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056527837] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:38:19,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915001449] [2021-11-04 03:38:19,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 03:38:19,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:38:19,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:38:19,285 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) [2021-11-04 03:38:19,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 03:38:20,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 03:38:20,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 03:38:20,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-04 03:38:20,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:38:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 03:38:20,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:38:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 03:38:20,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915001449] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:38:20,990 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:38:20,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2021-11-04 03:38:20,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634169190] [2021-11-04 03:38:20,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:38:20,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-04 03:38:20,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:38:20,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-04 03:38:20,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-11-04 03:38:20,991 INFO L87 Difference]: Start difference. First operand 14389 states and 20273 transitions. Second operand has 14 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 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) [2021-11-04 03:38:22,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:23,926 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:25,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:26,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:28,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:29,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:36,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:37,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:39,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:41,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:38:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:38:53,391 INFO L93 Difference]: Finished difference Result 38299 states and 53748 transitions. [2021-11-04 03:38:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-04 03:38:53,392 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 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 [2021-11-04 03:38:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:38:53,464 INFO L225 Difference]: With dead ends: 38299 [2021-11-04 03:38:53,464 INFO L226 Difference]: Without dead ends: 30479 [2021-11-04 03:38:53,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 231.52ms TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2021-11-04 03:38:53,490 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 995 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 6853 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30291.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 6885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.35ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 6853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31589.38ms IncrementalHoareTripleChecker+Time [2021-11-04 03:38:53,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 198 Invalid, 6885 Unknown, 0 Unchecked, 19.35ms Time], IncrementalHoareTripleChecker [31 Valid, 6853 Invalid, 1 Unknown, 0 Unchecked, 31589.38ms Time] [2021-11-04 03:38:53,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30479 states. [2021-11-04 03:38:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30479 to 29771. [2021-11-04 03:38:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29771 states, 28777 states have (on average 1.3996594502554123) internal successors, (40278), 28906 states have internal predecessors, (40278), 608 states have call successors, (608), 384 states have call predecessors, (608), 384 states have return successors, (912), 544 states have call predecessors, (912), 608 states have call successors, (912) [2021-11-04 03:38:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29771 states to 29771 states and 41798 transitions. [2021-11-04 03:38:54,243 INFO L78 Accepts]: Start accepts. Automaton has 29771 states and 41798 transitions. Word has length 83 [2021-11-04 03:38:54,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:38:54,244 INFO L470 AbstractCegarLoop]: Abstraction has 29771 states and 41798 transitions. [2021-11-04 03:38:54,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 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) [2021-11-04 03:38:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 29771 states and 41798 transitions. [2021-11-04 03:38:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-04 03:38:54,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:38:54,254 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:38:54,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 03:38:54,479 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,SelfDestructingSolverStorable12 [2021-11-04 03:38:54,479 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)] === [2021-11-04 03:38:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:38:54,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2096951681, now seen corresponding path program 1 times [2021-11-04 03:38:54,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:38:54,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93621899] [2021-11-04 03:38:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:38:54,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:38:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:38:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-04 03:38:54,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:38:54,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93621899] [2021-11-04 03:38:54,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93621899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:38:54,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:38:54,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:38:54,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237220446] [2021-11-04 03:38:54,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:38:54,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:38:54,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:38:54,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:38:54,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:38:54,551 INFO L87 Difference]: Start difference. First operand 29771 states and 41798 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2021-11-04 03:38:56,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:39:01,338 INFO L93 Difference]: Finished difference Result 59545 states and 83740 transitions. [2021-11-04 03:39:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:39:01,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 92 [2021-11-04 03:39:01,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:39:01,412 INFO L225 Difference]: With dead ends: 59545 [2021-11-04 03:39:01,412 INFO L226 Difference]: Without dead ends: 30001 [2021-11-04 03:39:01,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:39:01,457 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5762.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6074.00ms IncrementalHoareTripleChecker+Time [2021-11-04 03:39:01,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 1621 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [12 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 6074.00ms Time] [2021-11-04 03:39:01,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30001 states. [2021-11-04 03:39:02,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30001 to 30001. [2021-11-04 03:39:02,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30001 states, 29007 states have (on average 1.39649050229255) internal successors, (40508), 29136 states have internal predecessors, (40508), 608 states have call successors, (608), 384 states have call predecessors, (608), 384 states have return successors, (912), 544 states have call predecessors, (912), 608 states have call successors, (912) [2021-11-04 03:39:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30001 states to 30001 states and 42028 transitions. [2021-11-04 03:39:02,277 INFO L78 Accepts]: Start accepts. Automaton has 30001 states and 42028 transitions. Word has length 92 [2021-11-04 03:39:02,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:39:02,277 INFO L470 AbstractCegarLoop]: Abstraction has 30001 states and 42028 transitions. [2021-11-04 03:39:02,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2021-11-04 03:39:02,277 INFO L276 IsEmpty]: Start isEmpty. Operand 30001 states and 42028 transitions. [2021-11-04 03:39:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-04 03:39:02,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:39:02,288 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:39:02,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-04 03:39:02,288 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)] === [2021-11-04 03:39:02,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:39:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash -513853013, now seen corresponding path program 1 times [2021-11-04 03:39:02,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:39:02,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803948605] [2021-11-04 03:39:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:39:02,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:39:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:39:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 03:39:02,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:39:02,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803948605] [2021-11-04 03:39:02,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803948605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:39:02,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:39:02,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:39:02,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034568750] [2021-11-04 03:39:02,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:39:02,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:39:02,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:39:02,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:39:02,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:39:02,488 INFO L87 Difference]: Start difference. First operand 30001 states and 42028 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-04 03:39:04,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:06,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:08,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:11,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:39:11,130 INFO L93 Difference]: Finished difference Result 45413 states and 63640 transitions. [2021-11-04 03:39:11,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:39:11,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 93 [2021-11-04 03:39:11,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:39:11,169 INFO L225 Difference]: With dead ends: 45413 [2021-11-04 03:39:11,170 INFO L226 Difference]: Without dead ends: 15694 [2021-11-04 03:39:11,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:39:11,205 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 739 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7826.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8170.66ms IncrementalHoareTripleChecker+Time [2021-11-04 03:39:11,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 22 Invalid, 1141 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [1 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 8170.66ms Time] [2021-11-04 03:39:11,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15694 states. [2021-11-04 03:39:11,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15694 to 15665. [2021-11-04 03:39:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15665 states, 15167 states have (on average 1.3855080108129492) internal successors, (21014), 15232 states have internal predecessors, (21014), 304 states have call successors, (304), 192 states have call predecessors, (304), 192 states have return successors, (456), 272 states have call predecessors, (456), 304 states have call successors, (456) [2021-11-04 03:39:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15665 states to 15665 states and 21774 transitions. [2021-11-04 03:39:11,764 INFO L78 Accepts]: Start accepts. Automaton has 15665 states and 21774 transitions. Word has length 93 [2021-11-04 03:39:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:39:11,765 INFO L470 AbstractCegarLoop]: Abstraction has 15665 states and 21774 transitions. [2021-11-04 03:39:11,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-04 03:39:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 15665 states and 21774 transitions. [2021-11-04 03:39:11,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-04 03:39:11,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:39:11,774 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:39:11,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-04 03:39:11,774 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)] === [2021-11-04 03:39:11,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:39:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash 692740027, now seen corresponding path program 1 times [2021-11-04 03:39:11,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:39:11,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500108697] [2021-11-04 03:39:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:39:11,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:39:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:39:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-04 03:39:12,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:39:12,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500108697] [2021-11-04 03:39:12,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500108697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:39:12,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:39:12,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-04 03:39:12,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875193425] [2021-11-04 03:39:12,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:39:12,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-04 03:39:12,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:39:12,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-04 03:39:12,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:39:12,037 INFO L87 Difference]: Start difference. First operand 15665 states and 21774 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-04 03:39:14,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:15,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:17,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:19,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:39:25,824 INFO L93 Difference]: Finished difference Result 44130 states and 60545 transitions. [2021-11-04 03:39:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 03:39:25,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 95 [2021-11-04 03:39:25,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:39:25,946 INFO L225 Difference]: With dead ends: 44130 [2021-11-04 03:39:25,946 INFO L226 Difference]: Without dead ends: 35051 [2021-11-04 03:39:25,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.51ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-04 03:39:25,963 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 2067 mSDsluCounter, 3314 mSDsCounter, 0 mSdLazyCounter, 4623 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12213.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 4646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.85ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 4623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12990.28ms IncrementalHoareTripleChecker+Time [2021-11-04 03:39:25,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2070 Valid, 122 Invalid, 4646 Unknown, 0 Unchecked, 23.85ms Time], IncrementalHoareTripleChecker [23 Valid, 4623 Invalid, 0 Unknown, 0 Unchecked, 12990.28ms Time] [2021-11-04 03:39:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35051 states. [2021-11-04 03:39:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35051 to 15797. [2021-11-04 03:39:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15797 states, 15299 states have (on average 1.3821818419504543) internal successors, (21146), 15364 states have internal predecessors, (21146), 304 states have call successors, (304), 192 states have call predecessors, (304), 192 states have return successors, (456), 272 states have call predecessors, (456), 304 states have call successors, (456) [2021-11-04 03:39:26,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15797 states to 15797 states and 21906 transitions. [2021-11-04 03:39:26,603 INFO L78 Accepts]: Start accepts. Automaton has 15797 states and 21906 transitions. Word has length 95 [2021-11-04 03:39:26,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:39:26,604 INFO L470 AbstractCegarLoop]: Abstraction has 15797 states and 21906 transitions. [2021-11-04 03:39:26,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-04 03:39:26,604 INFO L276 IsEmpty]: Start isEmpty. Operand 15797 states and 21906 transitions. [2021-11-04 03:39:26,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 03:39:26,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:39:26,615 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 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] [2021-11-04 03:39:26,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-04 03:39:26,615 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)] === [2021-11-04 03:39:26,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:39:26,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1917865740, now seen corresponding path program 1 times [2021-11-04 03:39:26,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:39:26,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770023538] [2021-11-04 03:39:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:39:26,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:39:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:39:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 03:39:26,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:39:26,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770023538] [2021-11-04 03:39:26,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770023538] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:39:26,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997514450] [2021-11-04 03:39:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:39:26,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:39:26,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:39:26,711 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) [2021-11-04 03:39:26,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 03:39:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:39:27,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-04 03:39:27,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:39:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-04 03:39:27,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 03:39:27,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997514450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:39:27,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 03:39:27,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 03:39:27,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033627120] [2021-11-04 03:39:27,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:39:27,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:39:27,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:39:27,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:39:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:39:27,328 INFO L87 Difference]: Start difference. First operand 15797 states and 21906 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-04 03:39:28,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:39:31,291 INFO L93 Difference]: Finished difference Result 29856 states and 41765 transitions. [2021-11-04 03:39:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:39:31,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 [2021-11-04 03:39:31,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:39:31,337 INFO L225 Difference]: With dead ends: 29856 [2021-11-04 03:39:31,337 INFO L226 Difference]: Without dead ends: 22148 [2021-11-04 03:39:31,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.33ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:39:31,356 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 745 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3068.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.88ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3342.70ms IncrementalHoareTripleChecker+Time [2021-11-04 03:39:31,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 55 Invalid, 1477 Unknown, 0 Unchecked, 3.88ms Time], IncrementalHoareTripleChecker [7 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 3342.70ms Time] [2021-11-04 03:39:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22148 states. [2021-11-04 03:39:31,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22148 to 22133. [2021-11-04 03:39:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22133 states, 21387 states have (on average 1.3964090335250385) internal successors, (29865), 21484 states have internal predecessors, (29865), 456 states have call successors, (456), 288 states have call predecessors, (456), 288 states have return successors, (684), 408 states have call predecessors, (684), 456 states have call successors, (684) [2021-11-04 03:39:32,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22133 states to 22133 states and 31005 transitions. [2021-11-04 03:39:32,047 INFO L78 Accepts]: Start accepts. Automaton has 22133 states and 31005 transitions. Word has length 96 [2021-11-04 03:39:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:39:32,048 INFO L470 AbstractCegarLoop]: Abstraction has 22133 states and 31005 transitions. [2021-11-04 03:39:32,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-04 03:39:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 22133 states and 31005 transitions. [2021-11-04 03:39:32,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 03:39:32,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:39:32,088 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:39:32,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-04 03:39:32,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:39:32,289 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)] === [2021-11-04 03:39:32,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:39:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash -435788969, now seen corresponding path program 1 times [2021-11-04 03:39:32,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:39:32,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071032585] [2021-11-04 03:39:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:39:32,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:39:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:39:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-04 03:39:32,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:39:32,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071032585] [2021-11-04 03:39:32,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071032585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:39:32,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:39:32,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:39:32,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126795118] [2021-11-04 03:39:32,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:39:32,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:39:32,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:39:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:39:32,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:39:32,407 INFO L87 Difference]: Start difference. First operand 22133 states and 31005 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:39:34,671 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:36,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:37,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:39,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:44,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:39:44,172 INFO L93 Difference]: Finished difference Result 44340 states and 61606 transitions. [2021-11-04 03:39:44,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 03:39:44,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-04 03:39:44,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:39:44,247 INFO L225 Difference]: With dead ends: 44340 [2021-11-04 03:39:44,247 INFO L226 Difference]: Without dead ends: 31953 [2021-11-04 03:39:44,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.74ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:39:44,273 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 430 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10305.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.45ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10832.52ms IncrementalHoareTripleChecker+Time [2021-11-04 03:39:44,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 75 Invalid, 2921 Unknown, 0 Unchecked, 7.45ms Time], IncrementalHoareTripleChecker [8 Valid, 2912 Invalid, 1 Unknown, 0 Unchecked, 10832.52ms Time] [2021-11-04 03:39:44,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31953 states. [2021-11-04 03:39:45,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31953 to 22133. [2021-11-04 03:39:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22133 states, 21387 states have (on average 1.3952868565016132) internal successors, (29841), 21484 states have internal predecessors, (29841), 456 states have call successors, (456), 288 states have call predecessors, (456), 288 states have return successors, (684), 408 states have call predecessors, (684), 456 states have call successors, (684) [2021-11-04 03:39:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22133 states to 22133 states and 30981 transitions. [2021-11-04 03:39:45,170 INFO L78 Accepts]: Start accepts. Automaton has 22133 states and 30981 transitions. Word has length 97 [2021-11-04 03:39:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:39:45,171 INFO L470 AbstractCegarLoop]: Abstraction has 22133 states and 30981 transitions. [2021-11-04 03:39:45,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:39:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 22133 states and 30981 transitions. [2021-11-04 03:39:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-04 03:39:45,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:39:45,178 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 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] [2021-11-04 03:39:45,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-04 03:39:45,179 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)] === [2021-11-04 03:39:45,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:39:45,179 INFO L85 PathProgramCache]: Analyzing trace with hash 377795662, now seen corresponding path program 1 times [2021-11-04 03:39:45,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:39:45,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963291168] [2021-11-04 03:39:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:39:45,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:39:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:39:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 03:39:45,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:39:45,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963291168] [2021-11-04 03:39:45,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963291168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:39:45,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:39:45,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:39:45,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962309315] [2021-11-04 03:39:45,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:39:45,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:39:45,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:39:45,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:39:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:39:45,245 INFO L87 Difference]: Start difference. First operand 22133 states and 30981 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-04 03:39:46,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:47,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:49,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:39:54,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:39:54,546 INFO L93 Difference]: Finished difference Result 41603 states and 58538 transitions. [2021-11-04 03:39:54,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:39:54,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 [2021-11-04 03:39:54,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:39:54,599 INFO L225 Difference]: With dead ends: 41603 [2021-11-04 03:39:54,600 INFO L226 Difference]: Without dead ends: 21142 [2021-11-04 03:39:54,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:39:54,633 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 622 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8148.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.79ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8566.41ms IncrementalHoareTripleChecker+Time [2021-11-04 03:39:54,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 58 Invalid, 1943 Unknown, 0 Unchecked, 3.79ms Time], IncrementalHoareTripleChecker [6 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 8566.41ms Time] [2021-11-04 03:39:54,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21142 states. [2021-11-04 03:39:55,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21142 to 21126. [2021-11-04 03:39:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21126 states, 20380 states have (on average 1.3931305201177626) internal successors, (28392), 20477 states have internal predecessors, (28392), 456 states have call successors, (456), 288 states have call predecessors, (456), 288 states have return successors, (684), 408 states have call predecessors, (684), 456 states have call successors, (684) [2021-11-04 03:39:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21126 states to 21126 states and 29532 transitions. [2021-11-04 03:39:55,445 INFO L78 Accepts]: Start accepts. Automaton has 21126 states and 29532 transitions. Word has length 98 [2021-11-04 03:39:55,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:39:55,445 INFO L470 AbstractCegarLoop]: Abstraction has 21126 states and 29532 transitions. [2021-11-04 03:39:55,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-11-04 03:39:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 21126 states and 29532 transitions. [2021-11-04 03:39:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-04 03:39:55,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:39:55,453 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 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] [2021-11-04 03:39:55,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-04 03:39:55,453 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)] === [2021-11-04 03:39:55,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:39:55,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1427642672, now seen corresponding path program 1 times [2021-11-04 03:39:55,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:39:55,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622641757] [2021-11-04 03:39:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:39:55,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:39:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:39:55,604 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 03:39:55,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:39:55,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622641757] [2021-11-04 03:39:55,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622641757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:39:55,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:39:55,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:39:55,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181715847] [2021-11-04 03:39:55,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:39:55,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:39:55,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:39:55,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:39:55,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:39:55,607 INFO L87 Difference]: Start difference. First operand 21126 states and 29532 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2021-11-04 03:39:59,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:02,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:04,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:40:04,609 INFO L93 Difference]: Finished difference Result 58941 states and 82724 transitions. [2021-11-04 03:40:04,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:40:04,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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 98 [2021-11-04 03:40:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:40:04,746 INFO L225 Difference]: With dead ends: 58941 [2021-11-04 03:40:04,746 INFO L226 Difference]: Without dead ends: 39999 [2021-11-04 03:40:04,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:40:04,794 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1001 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 2665 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7182.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.38ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2665 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7667.63ms IncrementalHoareTripleChecker+Time [2021-11-04 03:40:04,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 90 Invalid, 2670 Unknown, 0 Unchecked, 7.38ms Time], IncrementalHoareTripleChecker [4 Valid, 2665 Invalid, 1 Unknown, 0 Unchecked, 7667.63ms Time] [2021-11-04 03:40:04,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39999 states. [2021-11-04 03:40:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39999 to 21174. [2021-11-04 03:40:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21174 states, 20428 states have (on average 1.3922067750146858) internal successors, (28440), 20525 states have internal predecessors, (28440), 456 states have call successors, (456), 288 states have call predecessors, (456), 288 states have return successors, (684), 408 states have call predecessors, (684), 456 states have call successors, (684) [2021-11-04 03:40:05,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21174 states to 21174 states and 29580 transitions. [2021-11-04 03:40:05,782 INFO L78 Accepts]: Start accepts. Automaton has 21174 states and 29580 transitions. Word has length 98 [2021-11-04 03:40:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:40:05,783 INFO L470 AbstractCegarLoop]: Abstraction has 21174 states and 29580 transitions. [2021-11-04 03:40:05,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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) [2021-11-04 03:40:05,783 INFO L276 IsEmpty]: Start isEmpty. Operand 21174 states and 29580 transitions. [2021-11-04 03:40:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-04 03:40:05,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:40:05,791 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 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] [2021-11-04 03:40:05,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-04 03:40:05,791 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)] === [2021-11-04 03:40:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:40:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash -271356267, now seen corresponding path program 1 times [2021-11-04 03:40:05,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:40:05,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951522772] [2021-11-04 03:40:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:05,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:40:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-04 03:40:05,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:40:05,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951522772] [2021-11-04 03:40:05,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951522772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:40:05,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504396962] [2021-11-04 03:40:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:05,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:40:05,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:40:05,866 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) [2021-11-04 03:40:05,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 03:40:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:06,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 03:40:06,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:40:06,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-11-04 03:40:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 03:40:06,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 03:40:06,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504396962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:40:06,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 03:40:06,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-04 03:40:06,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354936728] [2021-11-04 03:40:06,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:40:06,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:40:06,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:40:06,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:40:06,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:40:06,428 INFO L87 Difference]: Start difference. First operand 21174 states and 29580 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-04 03:40:07,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:08,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:09,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:11,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:40:13,963 INFO L93 Difference]: Finished difference Result 42098 states and 58927 transitions. [2021-11-04 03:40:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:40:13,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-04 03:40:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:40:14,005 INFO L225 Difference]: With dead ends: 42098 [2021-11-04 03:40:14,006 INFO L226 Difference]: Without dead ends: 21338 [2021-11-04 03:40:14,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 10.13ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:40:14,030 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6408.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.40ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6721.83ms IncrementalHoareTripleChecker+Time [2021-11-04 03:40:14,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 1617 Unknown, 0 Unchecked, 3.40ms Time], IncrementalHoareTripleChecker [12 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 6721.83ms Time] [2021-11-04 03:40:14,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21338 states. [2021-11-04 03:40:14,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21338 to 21338. [2021-11-04 03:40:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21338 states, 20592 states have (on average 1.389083139083139) internal successors, (28604), 20689 states have internal predecessors, (28604), 456 states have call successors, (456), 288 states have call predecessors, (456), 288 states have return successors, (684), 408 states have call predecessors, (684), 456 states have call successors, (684) [2021-11-04 03:40:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21338 states to 21338 states and 29744 transitions. [2021-11-04 03:40:14,694 INFO L78 Accepts]: Start accepts. Automaton has 21338 states and 29744 transitions. Word has length 99 [2021-11-04 03:40:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:40:14,694 INFO L470 AbstractCegarLoop]: Abstraction has 21338 states and 29744 transitions. [2021-11-04 03:40:14,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-04 03:40:14,694 INFO L276 IsEmpty]: Start isEmpty. Operand 21338 states and 29744 transitions. [2021-11-04 03:40:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-04 03:40:14,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:40:14,703 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:40:14,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 03:40:14,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:40:14,921 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)] === [2021-11-04 03:40:14,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:40:14,922 INFO L85 PathProgramCache]: Analyzing trace with hash -652539813, now seen corresponding path program 1 times [2021-11-04 03:40:14,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:40:14,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023119988] [2021-11-04 03:40:14,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:14,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:40:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-04 03:40:15,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:40:15,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023119988] [2021-11-04 03:40:15,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023119988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:40:15,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:40:15,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:40:15,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400805625] [2021-11-04 03:40:15,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:40:15,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:40:15,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:40:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:40:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:40:15,013 INFO L87 Difference]: Start difference. First operand 21338 states and 29744 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-11-04 03:40:17,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:18,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:21,218 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:24,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:40:28,780 INFO L93 Difference]: Finished difference Result 69734 states and 95747 transitions. [2021-11-04 03:40:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:40:28,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-04 03:40:28,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:40:28,890 INFO L225 Difference]: With dead ends: 69734 [2021-11-04 03:40:28,890 INFO L226 Difference]: Without dead ends: 48810 [2021-11-04 03:40:28,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:40:28,931 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1444 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 3509 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11220.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 3530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.72ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11887.83ms IncrementalHoareTripleChecker+Time [2021-11-04 03:40:28,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 84 Invalid, 3530 Unknown, 0 Unchecked, 10.72ms Time], IncrementalHoareTripleChecker [21 Valid, 3509 Invalid, 0 Unknown, 0 Unchecked, 11887.83ms Time] [2021-11-04 03:40:28,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48810 states. [2021-11-04 03:40:29,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48810 to 21610. [2021-11-04 03:40:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21610 states, 20864 states have (on average 1.3872699386503067) internal successors, (28944), 20961 states have internal predecessors, (28944), 456 states have call successors, (456), 288 states have call predecessors, (456), 288 states have return successors, (684), 408 states have call predecessors, (684), 456 states have call successors, (684) [2021-11-04 03:40:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21610 states to 21610 states and 30084 transitions. [2021-11-04 03:40:30,041 INFO L78 Accepts]: Start accepts. Automaton has 21610 states and 30084 transitions. Word has length 99 [2021-11-04 03:40:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:40:30,041 INFO L470 AbstractCegarLoop]: Abstraction has 21610 states and 30084 transitions. [2021-11-04 03:40:30,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-11-04 03:40:30,042 INFO L276 IsEmpty]: Start isEmpty. Operand 21610 states and 30084 transitions. [2021-11-04 03:40:30,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-04 03:40:30,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:40:30,049 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:40:30,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-04 03:40:30,050 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-04 03:40:30,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:40:30,050 INFO L85 PathProgramCache]: Analyzing trace with hash -702280475, now seen corresponding path program 1 times [2021-11-04 03:40:30,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:40:30,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882652098] [2021-11-04 03:40:30,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:30,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:40:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-04 03:40:30,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:40:30,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882652098] [2021-11-04 03:40:30,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882652098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:40:30,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:40:30,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 03:40:30,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223605626] [2021-11-04 03:40:30,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:40:30,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:40:30,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:40:30,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:40:30,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:30,134 INFO L87 Difference]: Start difference. First operand 21610 states and 30084 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:40:33,740 INFO L93 Difference]: Finished difference Result 21610 states and 30084 transitions. [2021-11-04 03:40:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:40:33,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-04 03:40:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:40:33,779 INFO L225 Difference]: With dead ends: 21610 [2021-11-04 03:40:33,779 INFO L226 Difference]: Without dead ends: 21602 [2021-11-04 03:40:33,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:40:33,786 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 750 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2663.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2840.64ms IncrementalHoareTripleChecker+Time [2021-11-04 03:40:33,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 22 Invalid, 804 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [0 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 2840.64ms Time] [2021-11-04 03:40:33,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21602 states. [2021-11-04 03:40:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21602 to 11969. [2021-11-04 03:40:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11969 states, 11596 states have (on average 1.3677130044843049) internal successors, (15860), 11644 states have internal predecessors, (15860), 228 states have call successors, (228), 144 states have call predecessors, (228), 144 states have return successors, (342), 204 states have call predecessors, (342), 228 states have call successors, (342) [2021-11-04 03:40:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11969 states to 11969 states and 16430 transitions. [2021-11-04 03:40:34,326 INFO L78 Accepts]: Start accepts. Automaton has 11969 states and 16430 transitions. Word has length 101 [2021-11-04 03:40:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:40:34,327 INFO L470 AbstractCegarLoop]: Abstraction has 11969 states and 16430 transitions. [2021-11-04 03:40:34,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:40:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 11969 states and 16430 transitions. [2021-11-04 03:40:34,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-04 03:40:34,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:40:34,334 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:40:34,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-04 03:40:34,335 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)] === [2021-11-04 03:40:34,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:40:34,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1939797153, now seen corresponding path program 1 times [2021-11-04 03:40:34,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:40:34,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44487395] [2021-11-04 03:40:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:40:34,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:40:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:40:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-04 03:40:34,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:40:34,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44487395] [2021-11-04 03:40:34,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44487395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:40:34,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:40:34,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-04 03:40:34,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480900277] [2021-11-04 03:40:34,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:40:34,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-04 03:40:34,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:40:34,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-04 03:40:34,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-04 03:40:34,585 INFO L87 Difference]: Start difference. First operand 11969 states and 16430 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 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) [2021-11-04 03:40:35,673 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:36,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:37,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:39,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:41,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:43,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:44,377 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:46,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:49,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:50,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:40:59,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:03,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:05,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:11,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:13,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:22,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:24,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:26,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:35,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:41:35,596 INFO L93 Difference]: Finished difference Result 49447 states and 66728 transitions. [2021-11-04 03:41:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-04 03:41:35,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 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 101 [2021-11-04 03:41:35,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:41:35,663 INFO L225 Difference]: With dead ends: 49447 [2021-11-04 03:41:35,663 INFO L226 Difference]: Without dead ends: 37491 [2021-11-04 03:41:35,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 551.05ms TimeCoverageRelationStatistics Valid=516, Invalid=1836, Unknown=0, NotChecked=0, Total=2352 [2021-11-04 03:41:35,685 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 4656 mSDsluCounter, 17748 mSDsCounter, 0 mSdLazyCounter, 22399 mSolverCounterSat, 228 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53930.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 22629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.22ms SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 22399 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57370.00ms IncrementalHoareTripleChecker+Time [2021-11-04 03:41:35,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4657 Valid, 576 Invalid, 22629 Unknown, 0 Unchecked, 60.22ms Time], IncrementalHoareTripleChecker [228 Valid, 22399 Invalid, 2 Unknown, 0 Unchecked, 57370.00ms Time] [2021-11-04 03:41:35,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37491 states. [2021-11-04 03:41:36,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37491 to 11969. [2021-11-04 03:41:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11969 states, 11596 states have (on average 1.3668506381510865) internal successors, (15850), 11644 states have internal predecessors, (15850), 228 states have call successors, (228), 144 states have call predecessors, (228), 144 states have return successors, (342), 204 states have call predecessors, (342), 228 states have call successors, (342) [2021-11-04 03:41:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11969 states to 11969 states and 16420 transitions. [2021-11-04 03:41:36,637 INFO L78 Accepts]: Start accepts. Automaton has 11969 states and 16420 transitions. Word has length 101 [2021-11-04 03:41:36,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:41:36,647 INFO L470 AbstractCegarLoop]: Abstraction has 11969 states and 16420 transitions. [2021-11-04 03:41:36,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 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) [2021-11-04 03:41:36,647 INFO L276 IsEmpty]: Start isEmpty. Operand 11969 states and 16420 transitions. [2021-11-04 03:41:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-04 03:41:36,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:41:36,660 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 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] [2021-11-04 03:41:36,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-04 03:41:36,660 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)] === [2021-11-04 03:41:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:41:36,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1224487733, now seen corresponding path program 1 times [2021-11-04 03:41:36,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:41:36,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068639024] [2021-11-04 03:41:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:36,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:41:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 03:41:36,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:41:36,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068639024] [2021-11-04 03:41:36,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068639024] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:41:36,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203097401] [2021-11-04 03:41:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:36,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:41:36,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:41:36,735 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) [2021-11-04 03:41:36,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 03:41:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:37,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 03:41:37,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:41:37,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-11-04 03:41:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 03:41:37,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:41:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-04 03:41:37,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203097401] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:41:37,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:41:37,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-04 03:41:37,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119856621] [2021-11-04 03:41:37,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:41:37,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 03:41:37,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:41:37,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 03:41:37,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-04 03:41:37,458 INFO L87 Difference]: Start difference. First operand 11969 states and 16420 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:38,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:40,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:42,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:44,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:49,878 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 [] [2021-11-04 03:41:52,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:41:52,599 INFO L93 Difference]: Finished difference Result 24293 states and 33561 transitions. [2021-11-04 03:41:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-04 03:41:52,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-04 03:41:52,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:41:52,625 INFO L225 Difference]: With dead ends: 24293 [2021-11-04 03:41:52,625 INFO L226 Difference]: Without dead ends: 12337 [2021-11-04 03:41:52,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 25.45ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-04 03:41:52,640 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 2371 mSDsCounter, 0 mSdLazyCounter, 3203 mSolverCounterSat, 89 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13606.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.09ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14197.57ms IncrementalHoareTripleChecker+Time [2021-11-04 03:41:52,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 3293 Unknown, 0 Unchecked, 6.09ms Time], IncrementalHoareTripleChecker [89 Valid, 3203 Invalid, 1 Unknown, 0 Unchecked, 14197.57ms Time] [2021-11-04 03:41:52,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12337 states. [2021-11-04 03:41:53,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12337 to 12337. [2021-11-04 03:41:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12337 states, 11964 states have (on average 1.355566700100301) internal successors, (16218), 12012 states have internal predecessors, (16218), 228 states have call successors, (228), 144 states have call predecessors, (228), 144 states have return successors, (342), 204 states have call predecessors, (342), 228 states have call successors, (342) [2021-11-04 03:41:53,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12337 states to 12337 states and 16788 transitions. [2021-11-04 03:41:53,368 INFO L78 Accepts]: Start accepts. Automaton has 12337 states and 16788 transitions. Word has length 102 [2021-11-04 03:41:53,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:41:53,369 INFO L470 AbstractCegarLoop]: Abstraction has 12337 states and 16788 transitions. [2021-11-04 03:41:53,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:41:53,369 INFO L276 IsEmpty]: Start isEmpty. Operand 12337 states and 16788 transitions. [2021-11-04 03:41:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-04 03:41:53,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:41:53,375 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 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] [2021-11-04 03:41:53,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-04 03:41:53,583 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,SelfDestructingSolverStorable24 [2021-11-04 03:41:53,586 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)] === [2021-11-04 03:41:53,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:41:53,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1304632209, now seen corresponding path program 2 times [2021-11-04 03:41:53,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:41:53,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703545282] [2021-11-04 03:41:53,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:41:53,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:41:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:41:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-04 03:41:53,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:41:53,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703545282] [2021-11-04 03:41:53,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703545282] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:41:53,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070498044] [2021-11-04 03:41:53,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 03:41:53,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:41:53,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:41:53,700 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) [2021-11-04 03:41:53,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 03:41:55,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 03:41:55,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 03:41:55,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-04 03:41:55,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:41:55,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-11-04 03:41:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-04 03:41:55,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:41:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-04 03:41:55,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070498044] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:41:55,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:41:55,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2021-11-04 03:41:55,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995350034] [2021-11-04 03:41:55,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:41:55,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-04 03:41:55,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:41:55,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-04 03:41:55,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-11-04 03:41:55,400 INFO L87 Difference]: Start difference. First operand 12337 states and 16788 transitions. Second operand has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 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) [2021-11-04 03:41:56,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:41:58,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:01,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:02,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:04,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:06,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:07,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:09,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:10,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:12,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:14,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:18,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:19,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:21,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:22,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:24,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:42:35,154 INFO L93 Difference]: Finished difference Result 28149 states and 38436 transitions. [2021-11-04 03:42:35,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-04 03:42:35,154 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 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 106 [2021-11-04 03:42:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:42:35,187 INFO L225 Difference]: With dead ends: 28149 [2021-11-04 03:42:35,187 INFO L226 Difference]: Without dead ends: 15825 [2021-11-04 03:42:35,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 129.56ms TimeCoverageRelationStatistics Valid=162, Invalid=258, Unknown=0, NotChecked=0, Total=420 [2021-11-04 03:42:35,207 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 479 mSDsluCounter, 5786 mSDsCounter, 0 mSdLazyCounter, 6874 mSolverCounterSat, 207 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37152.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 7085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.99ms SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 6874 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38417.57ms IncrementalHoareTripleChecker+Time [2021-11-04 03:42:35,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 139 Invalid, 7085 Unknown, 0 Unchecked, 13.99ms Time], IncrementalHoareTripleChecker [207 Valid, 6874 Invalid, 4 Unknown, 0 Unchecked, 38417.57ms Time] [2021-11-04 03:42:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15825 states. [2021-11-04 03:42:36,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15825 to 12981. [2021-11-04 03:42:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12981 states, 12608 states have (on average 1.3374048223350254) internal successors, (16862), 12656 states have internal predecessors, (16862), 228 states have call successors, (228), 144 states have call predecessors, (228), 144 states have return successors, (342), 204 states have call predecessors, (342), 228 states have call successors, (342) [2021-11-04 03:42:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12981 states to 12981 states and 17432 transitions. [2021-11-04 03:42:36,140 INFO L78 Accepts]: Start accepts. Automaton has 12981 states and 17432 transitions. Word has length 106 [2021-11-04 03:42:36,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:42:36,141 INFO L470 AbstractCegarLoop]: Abstraction has 12981 states and 17432 transitions. [2021-11-04 03:42:36,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 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) [2021-11-04 03:42:36,141 INFO L276 IsEmpty]: Start isEmpty. Operand 12981 states and 17432 transitions. [2021-11-04 03:42:36,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-04 03:42:36,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:42:36,147 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:42:36,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-04 03:42:36,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-04 03:42:36,364 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)] === [2021-11-04 03:42:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:42:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1690380302, now seen corresponding path program 1 times [2021-11-04 03:42:36,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:42:36,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545085723] [2021-11-04 03:42:36,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:42:36,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:42:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:42:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-04 03:42:36,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:42:36,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545085723] [2021-11-04 03:42:36,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545085723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:42:36,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:42:36,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-04 03:42:36,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284076810] [2021-11-04 03:42:36,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:42:36,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-04 03:42:36,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:42:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-04 03:42:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-04 03:42:36,870 INFO L87 Difference]: Start difference. First operand 12981 states and 17432 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2021-11-04 03:42:38,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:40,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:41,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:43,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:45,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:50,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:52,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:42:53,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:01,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:03,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:09,064 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:11,095 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:14,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:16,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:18,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:19,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:22,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:25,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:27,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:34,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:42,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:54,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:43:54,095 INFO L93 Difference]: Finished difference Result 83867 states and 109976 transitions. [2021-11-04 03:43:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-04 03:43:54,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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 110 [2021-11-04 03:43:54,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:43:54,243 INFO L225 Difference]: With dead ends: 83867 [2021-11-04 03:43:54,244 INFO L226 Difference]: Without dead ends: 70881 [2021-11-04 03:43:54,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3535 ImplicationChecksByTransitivity, 3148.66ms TimeCoverageRelationStatistics Valid=1782, Invalid=7338, Unknown=0, NotChecked=0, Total=9120 [2021-11-04 03:43:54,278 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 10824 mSDsluCounter, 13620 mSDsCounter, 0 mSdLazyCounter, 19167 mSolverCounterSat, 362 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61993.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10824 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 19534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.72ms SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 19167 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65570.95ms IncrementalHoareTripleChecker+Time [2021-11-04 03:43:54,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10824 Valid, 285 Invalid, 19534 Unknown, 0 Unchecked, 74.72ms Time], IncrementalHoareTripleChecker [362 Valid, 19167 Invalid, 5 Unknown, 0 Unchecked, 65570.95ms Time] [2021-11-04 03:43:54,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70881 states. [2021-11-04 03:43:56,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70881 to 19488. [2021-11-04 03:43:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19488 states, 18929 states have (on average 1.335252786729357) internal successors, (25275), 19001 states have internal predecessors, (25275), 342 states have call successors, (342), 216 states have call predecessors, (342), 216 states have return successors, (456), 306 states have call predecessors, (456), 342 states have call successors, (456) [2021-11-04 03:43:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19488 states to 19488 states and 26073 transitions. [2021-11-04 03:43:56,671 INFO L78 Accepts]: Start accepts. Automaton has 19488 states and 26073 transitions. Word has length 110 [2021-11-04 03:43:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:43:56,672 INFO L470 AbstractCegarLoop]: Abstraction has 19488 states and 26073 transitions. [2021-11-04 03:43:56,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 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) [2021-11-04 03:43:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 19488 states and 26073 transitions. [2021-11-04 03:43:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-04 03:43:56,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:43:56,679 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 5, 3, 3, 3, 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] [2021-11-04 03:43:56,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-04 03:43:56,679 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)] === [2021-11-04 03:43:56,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:43:56,679 INFO L85 PathProgramCache]: Analyzing trace with hash -121203755, now seen corresponding path program 1 times [2021-11-04 03:43:56,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:43:56,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356872184] [2021-11-04 03:43:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:43:56,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:43:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:43:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-04 03:43:56,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:43:56,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356872184] [2021-11-04 03:43:56,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356872184] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:43:56,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684362583] [2021-11-04 03:43:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:43:56,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:43:56,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:43:56,786 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:43:56,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 03:43:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:43:57,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-04 03:43:57,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:43:57,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-11-04 03:43:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-04 03:43:57,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:43:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-04 03:43:57,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684362583] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:43:57,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:43:57,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 27 [2021-11-04 03:43:57,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061518905] [2021-11-04 03:43:57,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:43:57,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-04 03:43:57,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:43:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-04 03:43:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2021-11-04 03:43:57,803 INFO L87 Difference]: Start difference. First operand 19488 states and 26073 transitions. Second operand has 27 states, 27 states have (on average 4.555555555555555) internal successors, (123), 27 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:43:58,839 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:01,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:02,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:05,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:08,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:14,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:44:14,207 INFO L93 Difference]: Finished difference Result 39239 states and 52683 transitions. [2021-11-04 03:44:14,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-04 03:44:14,207 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.555555555555555) internal successors, (123), 27 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-04 03:44:14,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:44:14,248 INFO L225 Difference]: With dead ends: 39239 [2021-11-04 03:44:14,248 INFO L226 Difference]: Without dead ends: 19764 [2021-11-04 03:44:14,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 237.25ms TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2021-11-04 03:44:14,269 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 4063 mSolverCounterSat, 269 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13166.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 4333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.99ms SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 4063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13972.15ms IncrementalHoareTripleChecker+Time [2021-11-04 03:44:14,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 4333 Unknown, 0 Unchecked, 8.99ms Time], IncrementalHoareTripleChecker [269 Valid, 4063 Invalid, 1 Unknown, 0 Unchecked, 13972.15ms Time] [2021-11-04 03:44:14,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19764 states. [2021-11-04 03:44:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19764 to 19764. [2021-11-04 03:44:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19764 states, 19205 states have (on average 1.3304347826086957) internal successors, (25551), 19277 states have internal predecessors, (25551), 342 states have call successors, (342), 216 states have call predecessors, (342), 216 states have return successors, (456), 306 states have call predecessors, (456), 342 states have call successors, (456) [2021-11-04 03:44:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19764 states to 19764 states and 26349 transitions. [2021-11-04 03:44:16,330 INFO L78 Accepts]: Start accepts. Automaton has 19764 states and 26349 transitions. Word has length 113 [2021-11-04 03:44:16,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:44:16,331 INFO L470 AbstractCegarLoop]: Abstraction has 19764 states and 26349 transitions. [2021-11-04 03:44:16,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.555555555555555) internal successors, (123), 27 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:44:16,331 INFO L276 IsEmpty]: Start isEmpty. Operand 19764 states and 26349 transitions. [2021-11-04 03:44:16,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-04 03:44:16,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:44:16,338 INFO L514 BasicCegarLoop]: trace histogram [11, 5, 5, 3, 3, 3, 3, 3, 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] [2021-11-04 03:44:16,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-04 03:44:16,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:44:16,544 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)] === [2021-11-04 03:44:16,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:44:16,544 INFO L85 PathProgramCache]: Analyzing trace with hash -80530921, now seen corresponding path program 2 times [2021-11-04 03:44:16,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:44:16,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505191949] [2021-11-04 03:44:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:44:16,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:44:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:44:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-04 03:44:16,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:44:16,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505191949] [2021-11-04 03:44:16,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505191949] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:44:16,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850564217] [2021-11-04 03:44:16,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 03:44:16,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:44:16,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:44:16,683 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:44:16,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 03:44:18,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 03:44:18,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 03:44:18,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 03:44:18,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:44:18,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-11-04 03:44:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-04 03:44:18,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:44:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-04 03:44:18,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850564217] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:44:18,773 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:44:18,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2021-11-04 03:44:18,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806326391] [2021-11-04 03:44:18,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:44:18,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 03:44:18,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:44:18,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 03:44:18,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-04 03:44:18,775 INFO L87 Difference]: Start difference. First operand 19764 states and 26349 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 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) [2021-11-04 03:44:19,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:21,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:23,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:24,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:25,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:27,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:29,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:34,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:36,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:41,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:44,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:44:44,209 INFO L93 Difference]: Finished difference Result 42809 states and 57001 transitions. [2021-11-04 03:44:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-04 03:44:44,210 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 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 115 [2021-11-04 03:44:44,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:44:44,273 INFO L225 Difference]: With dead ends: 42809 [2021-11-04 03:44:44,273 INFO L226 Difference]: Without dead ends: 23058 [2021-11-04 03:44:44,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 69.10ms TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-11-04 03:44:44,300 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 958 mSDsluCounter, 3351 mSDsCounter, 0 mSdLazyCounter, 4396 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21893.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 4570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.71ms SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 4396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22731.15ms IncrementalHoareTripleChecker+Time [2021-11-04 03:44:44,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [961 Valid, 104 Invalid, 4570 Unknown, 0 Unchecked, 9.71ms Time], IncrementalHoareTripleChecker [174 Valid, 4396 Invalid, 0 Unknown, 0 Unchecked, 22731.15ms Time] [2021-11-04 03:44:44,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23058 states. [2021-11-04 03:44:46,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23058 to 20040. [2021-11-04 03:44:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20040 states, 19481 states have (on average 1.325753298085314) internal successors, (25827), 19553 states have internal predecessors, (25827), 342 states have call successors, (342), 216 states have call predecessors, (342), 216 states have return successors, (456), 306 states have call predecessors, (456), 342 states have call successors, (456) [2021-11-04 03:44:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20040 states to 20040 states and 26625 transitions. [2021-11-04 03:44:46,544 INFO L78 Accepts]: Start accepts. Automaton has 20040 states and 26625 transitions. Word has length 115 [2021-11-04 03:44:46,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:44:46,544 INFO L470 AbstractCegarLoop]: Abstraction has 20040 states and 26625 transitions. [2021-11-04 03:44:46,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 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) [2021-11-04 03:44:46,545 INFO L276 IsEmpty]: Start isEmpty. Operand 20040 states and 26625 transitions. [2021-11-04 03:44:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-04 03:44:46,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:44:46,552 INFO L514 BasicCegarLoop]: trace histogram [11, 5, 5, 4, 3, 3, 3, 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] [2021-11-04 03:44:46,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-04 03:44:46,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-04 03:44:46,767 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)] === [2021-11-04 03:44:46,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:44:46,768 INFO L85 PathProgramCache]: Analyzing trace with hash -65687149, now seen corresponding path program 3 times [2021-11-04 03:44:46,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:44:46,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055847229] [2021-11-04 03:44:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:44:46,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:44:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:44:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-04 03:44:47,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:44:47,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055847229] [2021-11-04 03:44:47,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055847229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:44:47,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:44:47,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-04 03:44:47,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892119685] [2021-11-04 03:44:47,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:44:47,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-04 03:44:47,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:44:47,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-04 03:44:47,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-04 03:44:47,162 INFO L87 Difference]: Start difference. First operand 20040 states and 26625 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2021-11-04 03:44:48,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:50,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:52,683 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:54,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:56,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:57,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:59,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:00,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:01,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:03,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:04,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:05,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:11,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:20,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:23,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:25,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:26,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:34,244 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:35,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:37,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:39,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:41,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:42,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:54,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:56,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:03,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:11,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:46:27,075 INFO L93 Difference]: Finished difference Result 133313 states and 171453 transitions. [2021-11-04 03:46:27,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-04 03:46:27,075 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 117 [2021-11-04 03:46:27,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:46:27,439 INFO L225 Difference]: With dead ends: 133313 [2021-11-04 03:46:27,439 INFO L226 Difference]: Without dead ends: 116203 [2021-11-04 03:46:27,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 899.14ms TimeCoverageRelationStatistics Valid=896, Invalid=3796, Unknown=0, NotChecked=0, Total=4692 [2021-11-04 03:46:27,499 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 5839 mSDsluCounter, 18433 mSDsCounter, 0 mSdLazyCounter, 23257 mSolverCounterSat, 283 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74696.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5840 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 23543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.13ms SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 23257 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78851.89ms IncrementalHoareTripleChecker+Time [2021-11-04 03:46:27,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5840 Valid, 539 Invalid, 23543 Unknown, 0 Unchecked, 80.13ms Time], IncrementalHoareTripleChecker [283 Valid, 23257 Invalid, 3 Unknown, 0 Unchecked, 78851.89ms Time] [2021-11-04 03:46:27,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116203 states. [2021-11-04 03:46:32,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116203 to 31811. [2021-11-04 03:46:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31811 states, 30880 states have (on average 1.336658031088083) internal successors, (41276), 31000 states have internal predecessors, (41276), 570 states have call successors, (570), 360 states have call predecessors, (570), 360 states have return successors, (798), 510 states have call predecessors, (798), 570 states have call successors, (798) [2021-11-04 03:46:32,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31811 states to 31811 states and 42644 transitions. [2021-11-04 03:46:32,750 INFO L78 Accepts]: Start accepts. Automaton has 31811 states and 42644 transitions. Word has length 117 [2021-11-04 03:46:32,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:46:32,751 INFO L470 AbstractCegarLoop]: Abstraction has 31811 states and 42644 transitions. [2021-11-04 03:46:32,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2021-11-04 03:46:32,751 INFO L276 IsEmpty]: Start isEmpty. Operand 31811 states and 42644 transitions. [2021-11-04 03:46:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-04 03:46:32,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:46:32,759 INFO L514 BasicCegarLoop]: trace histogram [11, 5, 5, 4, 3, 3, 3, 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] [2021-11-04 03:46:32,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-04 03:46:32,759 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)] === [2021-11-04 03:46:32,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:46:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash -195950457, now seen corresponding path program 1 times [2021-11-04 03:46:32,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:46:32,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854658819] [2021-11-04 03:46:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:46:32,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:46:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:46:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-04 03:46:33,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:46:33,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854658819] [2021-11-04 03:46:33,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854658819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:46:33,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:46:33,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-04 03:46:33,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847991961] [2021-11-04 03:46:33,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:46:33,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-04 03:46:33,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:46:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-04 03:46:33,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-04 03:46:33,273 INFO L87 Difference]: Start difference. First operand 31811 states and 42644 transitions. Second operand has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:46:34,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:35,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:37,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:39,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:41,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:42,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:43,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:46,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:48,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:50,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:02,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:06,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:08,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:10,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:12,355 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:16,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:21,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:24,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:37,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:38,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:44,724 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:53,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:57,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:22,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:48:22,864 INFO L93 Difference]: Finished difference Result 192607 states and 250558 transitions. [2021-11-04 03:48:22,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-04 03:48:22,865 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-04 03:48:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:48:23,476 INFO L225 Difference]: With dead ends: 192607 [2021-11-04 03:48:23,476 INFO L226 Difference]: Without dead ends: 164575 [2021-11-04 03:48:23,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3515 ImplicationChecksByTransitivity, 3530.03ms TimeCoverageRelationStatistics Valid=1782, Invalid=7530, Unknown=0, NotChecked=0, Total=9312 [2021-11-04 03:48:23,566 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 9805 mSDsluCounter, 14184 mSDsCounter, 0 mSdLazyCounter, 18549 mSolverCounterSat, 327 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69592.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9805 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 18884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 98.19ms SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 18549 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73798.89ms IncrementalHoareTripleChecker+Time [2021-11-04 03:48:23,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9805 Valid, 246 Invalid, 18884 Unknown, 0 Unchecked, 98.19ms Time], IncrementalHoareTripleChecker [327 Valid, 18549 Invalid, 8 Unknown, 0 Unchecked, 73798.89ms Time] [2021-11-04 03:48:23,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164575 states. [2021-11-04 03:48:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164575 to 42274. [2021-11-04 03:48:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42274 states, 40989 states have (on average 1.3403840054648808) internal successors, (54941), 41151 states have internal predecessors, (54941), 780 states have call successors, (780), 504 states have call predecessors, (780), 504 states have return successors, (1008), 702 states have call predecessors, (1008), 780 states have call successors, (1008) [2021-11-04 03:48:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42274 states to 42274 states and 56729 transitions. [2021-11-04 03:48:30,763 INFO L78 Accepts]: Start accepts. Automaton has 42274 states and 56729 transitions. Word has length 123 [2021-11-04 03:48:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:48:30,763 INFO L470 AbstractCegarLoop]: Abstraction has 42274 states and 56729 transitions. [2021-11-04 03:48:30,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.0) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 03:48:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 42274 states and 56729 transitions. [2021-11-04 03:48:30,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-04 03:48:30,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:48:30,809 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 5, 4, 3, 3, 3, 3, 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] [2021-11-04 03:48:30,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-04 03:48:30,810 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)] === [2021-11-04 03:48:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:48:30,810 INFO L85 PathProgramCache]: Analyzing trace with hash 948763292, now seen corresponding path program 1 times [2021-11-04 03:48:30,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:48:30,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77066690] [2021-11-04 03:48:30,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:48:30,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:48:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:48:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-04 03:48:30,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:48:30,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77066690] [2021-11-04 03:48:30,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77066690] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:48:30,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517113305] [2021-11-04 03:48:30,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:48:30,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:48:30,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:48:30,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:48:30,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 03:48:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:48:31,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2065 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 03:48:31,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:48:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-04 03:48:31,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 03:48:31,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517113305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:48:31,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-04 03:48:31,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-04 03:48:31,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376754617] [2021-11-04 03:48:31,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:48:31,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:48:31,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:48:31,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:48:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:48:31,708 INFO L87 Difference]: Start difference. First operand 42274 states and 56729 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2021-11-04 03:48:32,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:34,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:36,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:46,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:48:46,192 INFO L93 Difference]: Finished difference Result 61980 states and 83331 transitions. [2021-11-04 03:48:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 03:48:46,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-04 03:48:46,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:48:46,299 INFO L225 Difference]: With dead ends: 61980 [2021-11-04 03:48:46,299 INFO L226 Difference]: Without dead ends: 42055 [2021-11-04 03:48:46,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.94ms TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:48:46,337 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 1483 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7525.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.76ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7905.79ms IncrementalHoareTripleChecker+Time [2021-11-04 03:48:46,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 22 Invalid, 1178 Unknown, 0 Unchecked, 5.76ms Time], IncrementalHoareTripleChecker [25 Valid, 1152 Invalid, 1 Unknown, 0 Unchecked, 7905.79ms Time] [2021-11-04 03:48:46,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42055 states. [2021-11-04 03:48:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42055 to 42050. [2021-11-04 03:48:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42050 states, 40765 states have (on average 1.340782534036551) internal successors, (54657), 40927 states have internal predecessors, (54657), 780 states have call successors, (780), 504 states have call predecessors, (780), 504 states have return successors, (1008), 702 states have call predecessors, (1008), 780 states have call successors, (1008) [2021-11-04 03:48:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42050 states to 42050 states and 56445 transitions. [2021-11-04 03:48:52,748 INFO L78 Accepts]: Start accepts. Automaton has 42050 states and 56445 transitions. Word has length 135 [2021-11-04 03:48:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:48:52,749 INFO L470 AbstractCegarLoop]: Abstraction has 42050 states and 56445 transitions. [2021-11-04 03:48:52,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2021-11-04 03:48:52,749 INFO L276 IsEmpty]: Start isEmpty. Operand 42050 states and 56445 transitions. [2021-11-04 03:48:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-04 03:48:52,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:48:52,764 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 5, 4, 3, 3, 3, 3, 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] [2021-11-04 03:48:52,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-04 03:48:52,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:48:52,976 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)] === [2021-11-04 03:48:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:48:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash 620928334, now seen corresponding path program 2 times [2021-11-04 03:48:52,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:48:52,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262628947] [2021-11-04 03:48:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:48:52,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:48:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:48:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-04 03:48:53,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:48:53,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262628947] [2021-11-04 03:48:53,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262628947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:48:53,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:48:53,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 03:48:53,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917371388] [2021-11-04 03:48:53,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:48:53,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 03:48:53,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:48:53,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 03:48:53,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 03:48:53,165 INFO L87 Difference]: Start difference. First operand 42050 states and 56445 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-11-04 03:48:54,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:56,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:57,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:00,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:01,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:03,035 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:05,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:20,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:49:20,998 INFO L93 Difference]: Finished difference Result 112554 states and 150846 transitions. [2021-11-04 03:49:20,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 03:49:20,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-11-04 03:49:20,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:49:21,196 INFO L225 Difference]: With dead ends: 112554 [2021-11-04 03:49:21,196 INFO L226 Difference]: Without dead ends: 71926 [2021-11-04 03:49:21,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 03:49:21,255 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 1154 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 3563 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16168.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.79ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3563 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16934.10ms IncrementalHoareTripleChecker+Time [2021-11-04 03:49:21,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 104 Invalid, 3570 Unknown, 0 Unchecked, 8.79ms Time], IncrementalHoareTripleChecker [6 Valid, 3563 Invalid, 1 Unknown, 0 Unchecked, 16934.10ms Time] [2021-11-04 03:49:21,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71926 states. [2021-11-04 03:49:27,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71926 to 42160. [2021-11-04 03:49:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42160 states, 40875 states have (on average 1.339743119266055) internal successors, (54762), 41037 states have internal predecessors, (54762), 780 states have call successors, (780), 504 states have call predecessors, (780), 504 states have return successors, (1008), 702 states have call predecessors, (1008), 780 states have call successors, (1008) [2021-11-04 03:49:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42160 states to 42160 states and 56550 transitions. [2021-11-04 03:49:27,902 INFO L78 Accepts]: Start accepts. Automaton has 42160 states and 56550 transitions. Word has length 135 [2021-11-04 03:49:27,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:49:27,902 INFO L470 AbstractCegarLoop]: Abstraction has 42160 states and 56550 transitions. [2021-11-04 03:49:27,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2021-11-04 03:49:27,903 INFO L276 IsEmpty]: Start isEmpty. Operand 42160 states and 56550 transitions. [2021-11-04 03:49:27,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-04 03:49:27,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:49:27,916 INFO L514 BasicCegarLoop]: trace histogram [11, 5, 5, 4, 3, 3, 3, 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] [2021-11-04 03:49:27,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-04 03:49:27,917 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)] === [2021-11-04 03:49:27,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:49:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash -482352772, now seen corresponding path program 1 times [2021-11-04 03:49:27,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:49:27,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071984349] [2021-11-04 03:49:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:49:27,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:49:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:49:28,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-04 03:49:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:49:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-04 03:49:28,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:49:28,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071984349] [2021-11-04 03:49:28,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071984349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:49:28,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:49:28,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-04 03:49:28,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072488227] [2021-11-04 03:49:28,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:49:28,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 03:49:28,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:49:28,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 03:49:28,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-04 03:49:28,107 INFO L87 Difference]: Start difference. First operand 42160 states and 56550 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-04 03:49:30,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:32,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:34,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:37,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:39,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:40,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:41,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:44,777 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:46,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:50,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:52,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:54,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:55,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:00,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:09,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:36,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:50:36,773 INFO L93 Difference]: Finished difference Result 176837 states and 230725 transitions. [2021-11-04 03:50:36,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-04 03:50:36,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2021-11-04 03:50:36,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:50:37,155 INFO L225 Difference]: With dead ends: 176837 [2021-11-04 03:50:37,155 INFO L226 Difference]: Without dead ends: 138818 [2021-11-04 03:50:37,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 81.02ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-04 03:50:37,234 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 2763 mSDsluCounter, 5319 mSDsCounter, 0 mSdLazyCounter, 7720 mSolverCounterSat, 61 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35139.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2771 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 7786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.81ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 7720 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36971.22ms IncrementalHoareTripleChecker+Time [2021-11-04 03:50:37,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2771 Valid, 119 Invalid, 7786 Unknown, 0 Unchecked, 39.81ms Time], IncrementalHoareTripleChecker [61 Valid, 7720 Invalid, 5 Unknown, 0 Unchecked, 36971.22ms Time] [2021-11-04 03:50:37,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138818 states. [2021-11-04 03:50:44,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138818 to 42748. [2021-11-04 03:50:44,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42748 states, 41367 states have (on average 1.3400536659656248) internal successors, (55434), 41577 states have internal predecessors, (55434), 804 states have call successors, (804), 504 states have call predecessors, (804), 576 states have return successors, (1164), 762 states have call predecessors, (1164), 804 states have call successors, (1164) [2021-11-04 03:50:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42748 states to 42748 states and 57402 transitions. [2021-11-04 03:50:45,091 INFO L78 Accepts]: Start accepts. Automaton has 42748 states and 57402 transitions. Word has length 138 [2021-11-04 03:50:45,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:50:45,091 INFO L470 AbstractCegarLoop]: Abstraction has 42748 states and 57402 transitions. [2021-11-04 03:50:45,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-04 03:50:45,092 INFO L276 IsEmpty]: Start isEmpty. Operand 42748 states and 57402 transitions. [2021-11-04 03:50:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-04 03:50:45,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:50:45,105 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 5, 5, 5, 5, 4, 4, 3, 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] [2021-11-04 03:50:45,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-04 03:50:45,105 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)] === [2021-11-04 03:50:45,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:50:45,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1016656542, now seen corresponding path program 1 times [2021-11-04 03:50:45,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:50:45,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896878029] [2021-11-04 03:50:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:50:45,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:50:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:50:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-04 03:50:45,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:50:45,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896878029] [2021-11-04 03:50:45,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896878029] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:50:45,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233182848] [2021-11-04 03:50:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:50:45,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:50:45,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:50:45,221 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:50:45,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 03:50:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:50:45,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 03:50:45,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:50:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 59 proven. 9 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-04 03:50:45,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:50:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 59 proven. 9 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-04 03:50:46,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233182848] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:50:46,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:50:46,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2021-11-04 03:50:46,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347616716] [2021-11-04 03:50:46,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:50:46,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-04 03:50:46,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:50:46,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-04 03:50:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-04 03:50:46,207 INFO L87 Difference]: Start difference. First operand 42748 states and 57402 transitions. Second operand has 7 states, 7 states have (on average 25.142857142857142) internal successors, (176), 7 states have internal predecessors, (176), 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) [2021-11-04 03:50:47,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:48,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:50,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:51,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:52,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15