./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--esd_usb2.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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--esd_usb2.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 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 16:13:26,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 16:13:26,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 16:13:27,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 16:13:27,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 16:13:27,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 16:13:27,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 16:13:27,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 16:13:27,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 16:13:27,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 16:13:27,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 16:13:27,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 16:13:27,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 16:13:27,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 16:13:27,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 16:13:27,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 16:13:27,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 16:13:27,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 16:13:27,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 16:13:27,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 16:13:27,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 16:13:27,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 16:13:27,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 16:13:27,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 16:13:27,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 16:13:27,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 16:13:27,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 16:13:27,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 16:13:27,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 16:13:27,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 16:13:27,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 16:13:27,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 16:13:27,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 16:13:27,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 16:13:27,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 16:13:27,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 16:13:27,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 16:13:27,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 16:13:27,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 16:13:27,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 16:13:27,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 16:13:27,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 16:13:27,109 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 16:13:27,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 16:13:27,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 16:13:27,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 16:13:27,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 16:13:27,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 16:13:27,113 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 16:13:27,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 16:13:27,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 16:13:27,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 16:13:27,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 16:13:27,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 16:13:27,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 16:13:27,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 16:13:27,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 16:13:27,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 16:13:27,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 16:13:27,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 16:13:27,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 16:13:27,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:13:27,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 16:13:27,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 16:13:27,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 16:13:27,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 16:13:27,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 16:13:27,117 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 16:13:27,117 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 16:13:27,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 16:13:27,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 16:13:27,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 [2021-11-05 16:13:27,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 16:13:27,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 16:13:27,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 16:13:27,436 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 16:13:27,437 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 16:13:27,439 INFO L432 ainManager$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--esd_usb2.ko-entry_point.cil.out.i [2021-11-05 16:13:27,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564c3fece/cad50812e9aa4879b3955c7ee674f4cf/FLAG7a2b8f891 [2021-11-05 16:13:28,246 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 16:13:28,247 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--esd_usb2.ko-entry_point.cil.out.i [2021-11-05 16:13:28,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564c3fece/cad50812e9aa4879b3955c7ee674f4cf/FLAG7a2b8f891 [2021-11-05 16:13:28,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564c3fece/cad50812e9aa4879b3955c7ee674f4cf [2021-11-05 16:13:28,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 16:13:28,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 16:13:28,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 16:13:28,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 16:13:28,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 16:13:28,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:13:28" (1/1) ... [2021-11-05 16:13:28,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ebf6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:28, skipping insertion in model container [2021-11-05 16:13:28,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:13:28" (1/1) ... [2021-11-05 16:13:28,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 16:13:28,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 16:13:29,372 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--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2021-11-05 16:13:29,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:13:29,717 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 16:13:29,860 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--esd_usb2.ko-entry_point.cil.out.i[163937,163950] [2021-11-05 16:13:30,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 16:13:30,140 INFO L208 MainTranslator]: Completed translation [2021-11-05 16:13:30,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30 WrapperNode [2021-11-05 16:13:30,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 16:13:30,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 16:13:30,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 16:13:30,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 16:13:30,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30" (1/1) ... [2021-11-05 16:13:30,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30" (1/1) ... [2021-11-05 16:13:30,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 16:13:30,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 16:13:30,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 16:13:30,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 16:13:30,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30" (1/1) ... [2021-11-05 16:13:30,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30" (1/1) ... [2021-11-05 16:13:30,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30" (1/1) ... [2021-11-05 16:13:30,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30" (1/1) ... [2021-11-05 16:13:30,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30" (1/1) ... [2021-11-05 16:13:30,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30" (1/1) ... [2021-11-05 16:13:30,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30" (1/1) ... [2021-11-05 16:13:30,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 16:13:30,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 16:13:30,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 16:13:30,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 16:13:30,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30" (1/1) ... [2021-11-05 16:13:30,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 16:13:30,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:13:30,681 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) [2021-11-05 16:13:30,701 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 [2021-11-05 16:13:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2021-11-05 16:13:30,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2021-11-05 16:13:30,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 16:13:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-05 16:13:30,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-05 16:13:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 16:13:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 16:13:30,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 16:13:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 16:13:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:13:30,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 16:13:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 16:13:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 16:13:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 16:13:30,727 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_read_bulk_callback [2021-11-05 16:13:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_read_bulk_callback [2021-11-05 16:13:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 16:13:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 16:13:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 16:13:33,419 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 16:13:33,420 INFO L299 CfgBuilder]: Removed 577 assume(true) statements. [2021-11-05 16:13:33,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:13:33 BoogieIcfgContainer [2021-11-05 16:13:33,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 16:13:33,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 16:13:33,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 16:13:33,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 16:13:33,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:13:28" (1/3) ... [2021-11-05 16:13:33,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3ff47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:13:33, skipping insertion in model container [2021-11-05 16:13:33,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:13:30" (2/3) ... [2021-11-05 16:13:33,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3ff47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:13:33, skipping insertion in model container [2021-11-05 16:13:33,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:13:33" (3/3) ... [2021-11-05 16:13:33,430 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--esd_usb2.ko-entry_point.cil.out.i [2021-11-05 16:13:33,435 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 16:13:33,435 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-05 16:13:33,488 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 16:13:33,494 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 [2021-11-05 16:13:33,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-05 16:13:33,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 598 states, 581 states have (on average 1.4113597246127367) internal successors, (820), 587 states have internal predecessors, (820), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-05 16:13:33,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-05 16:13:33,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:33,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:33,534 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)] === [2021-11-05 16:13:33,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:33,538 INFO L85 PathProgramCache]: Analyzing trace with hash -443169162, now seen corresponding path program 1 times [2021-11-05 16:13:33,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:33,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785389737] [2021-11-05 16:13:33,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:33,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:13:34,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:34,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785389737] [2021-11-05 16:13:34,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785389737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:34,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:34,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:13:34,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805025291] [2021-11-05 16:13:34,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:34,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:34,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:34,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:34,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:34,059 INFO L87 Difference]: Start difference. First operand has 598 states, 581 states have (on average 1.4113597246127367) internal successors, (820), 587 states have internal predecessors, (820), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:34,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:34,878 INFO L93 Difference]: Finished difference Result 1694 states and 2383 transitions. [2021-11-05 16:13:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:34,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-05 16:13:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:34,905 INFO L225 Difference]: With dead ends: 1694 [2021-11-05 16:13:34,905 INFO L226 Difference]: Without dead ends: 1079 [2021-11-05 16:13:34,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:34,922 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 697 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 644.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.54ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 684.64ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:34,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 1590 Invalid, 15 Unknown, 0 Unchecked, 18.54ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 684.64ms Time] [2021-11-05 16:13:34,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-11-05 16:13:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1079. [2021-11-05 16:13:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1052 states have (on average 1.358365019011407) internal successors, (1429), 1058 states have internal predecessors, (1429), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-05 16:13:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1457 transitions. [2021-11-05 16:13:35,037 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1457 transitions. Word has length 36 [2021-11-05 16:13:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:35,038 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 1457 transitions. [2021-11-05 16:13:35,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:35,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1457 transitions. [2021-11-05 16:13:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 16:13:35,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:35,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:35,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 16:13:35,048 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)] === [2021-11-05 16:13:35,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash 71303661, now seen corresponding path program 1 times [2021-11-05 16:13:35,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:35,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872110706] [2021-11-05 16:13:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:35,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:13:35,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:35,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872110706] [2021-11-05 16:13:35,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872110706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:35,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:35,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:13:35,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216995786] [2021-11-05 16:13:35,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:35,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:35,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:35,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:35,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:35,288 INFO L87 Difference]: Start difference. First operand 1079 states and 1457 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:35,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:35,426 INFO L93 Difference]: Finished difference Result 3119 states and 4232 transitions. [2021-11-05 16:13:35,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:35,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-05 16:13:35,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:35,438 INFO L225 Difference]: With dead ends: 3119 [2021-11-05 16:13:35,438 INFO L226 Difference]: Without dead ends: 2098 [2021-11-05 16:13:35,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.88ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:35,446 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 734 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.24ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.98ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:35,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 1468 Invalid, 37 Unknown, 0 Unchecked, 8.24ms Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 55.98ms Time] [2021-11-05 16:13:35,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2021-11-05 16:13:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 2086. [2021-11-05 16:13:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 2037 states have (on average 1.3598429062346589) internal successors, (2770), 2045 states have internal predecessors, (2770), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 16:13:35,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2826 transitions. [2021-11-05 16:13:35,538 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2826 transitions. Word has length 43 [2021-11-05 16:13:35,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:35,541 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 2826 transitions. [2021-11-05 16:13:35,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:35,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2826 transitions. [2021-11-05 16:13:35,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-05 16:13:35,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:35,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:35,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 16:13:35,546 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)] === [2021-11-05 16:13:35,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2084553551, now seen corresponding path program 1 times [2021-11-05 16:13:35,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:35,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896833209] [2021-11-05 16:13:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:35,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:13:35,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:35,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896833209] [2021-11-05 16:13:35,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896833209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:35,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:35,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:13:35,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737340839] [2021-11-05 16:13:35,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:35,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:35,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:35,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:35,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:35,744 INFO L87 Difference]: Start difference. First operand 2086 states and 2826 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:35,805 INFO L93 Difference]: Finished difference Result 2086 states and 2826 transitions. [2021-11-05 16:13:35,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:35,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-11-05 16:13:35,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:35,815 INFO L225 Difference]: With dead ends: 2086 [2021-11-05 16:13:35,815 INFO L226 Difference]: Without dead ends: 2084 [2021-11-05 16:13:35,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:35,819 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 738 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.30ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:35,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 779 Invalid, 1 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.30ms Time] [2021-11-05 16:13:35,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-11-05 16:13:35,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2084. [2021-11-05 16:13:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2036 states have (on average 1.3595284872298625) internal successors, (2768), 2043 states have internal predecessors, (2768), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 16:13:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2824 transitions. [2021-11-05 16:13:35,904 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2824 transitions. Word has length 44 [2021-11-05 16:13:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:35,905 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 2824 transitions. [2021-11-05 16:13:35,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:35,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2824 transitions. [2021-11-05 16:13:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-05 16:13:35,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:35,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:35,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 16:13:35,907 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)] === [2021-11-05 16:13:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash -196650377, now seen corresponding path program 1 times [2021-11-05 16:13:35,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:35,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801606941] [2021-11-05 16:13:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:35,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:13:36,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:36,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801606941] [2021-11-05 16:13:36,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801606941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:36,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:36,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:13:36,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813299925] [2021-11-05 16:13:36,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:36,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:36,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:36,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:36,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:36,041 INFO L87 Difference]: Start difference. First operand 2084 states and 2824 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:36,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:36,108 INFO L93 Difference]: Finished difference Result 2084 states and 2824 transitions. [2021-11-05 16:13:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:36,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-05 16:13:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:36,119 INFO L225 Difference]: With dead ends: 2084 [2021-11-05 16:13:36,119 INFO L226 Difference]: Without dead ends: 2082 [2021-11-05 16:13:36,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:36,122 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 735 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.05ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:36,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 777 Invalid, 1 Unknown, 0 Unchecked, 2.53ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.05ms Time] [2021-11-05 16:13:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-11-05 16:13:36,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2021-11-05 16:13:36,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2035 states have (on average 1.3592137592137592) internal successors, (2766), 2041 states have internal predecessors, (2766), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 16:13:36,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2822 transitions. [2021-11-05 16:13:36,206 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2822 transitions. Word has length 45 [2021-11-05 16:13:36,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:36,207 INFO L470 AbstractCegarLoop]: Abstraction has 2082 states and 2822 transitions. [2021-11-05 16:13:36,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:36,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2822 transitions. [2021-11-05 16:13:36,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-05 16:13:36,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:36,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:36,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 16:13:36,210 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)] === [2021-11-05 16:13:36,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:36,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1801194117, now seen corresponding path program 1 times [2021-11-05 16:13:36,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:36,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616555568] [2021-11-05 16:13:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:36,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:13:36,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:36,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616555568] [2021-11-05 16:13:36,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616555568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:36,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:36,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:13:36,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371810195] [2021-11-05 16:13:36,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:36,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:36,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:36,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:36,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:36,326 INFO L87 Difference]: Start difference. First operand 2082 states and 2822 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:36,384 INFO L93 Difference]: Finished difference Result 2082 states and 2822 transitions. [2021-11-05 16:13:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:36,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-05 16:13:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:36,394 INFO L225 Difference]: With dead ends: 2082 [2021-11-05 16:13:36,394 INFO L226 Difference]: Without dead ends: 2080 [2021-11-05 16:13:36,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:36,396 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 732 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.06ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:36,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 775 Invalid, 1 Unknown, 0 Unchecked, 2.36ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.06ms Time] [2021-11-05 16:13:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-11-05 16:13:36,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2080. [2021-11-05 16:13:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2034 states have (on average 1.3588987217305801) internal successors, (2764), 2039 states have internal predecessors, (2764), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 16:13:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2820 transitions. [2021-11-05 16:13:36,513 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2820 transitions. Word has length 46 [2021-11-05 16:13:36,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:36,514 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 2820 transitions. [2021-11-05 16:13:36,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:36,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2820 transitions. [2021-11-05 16:13:36,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 16:13:36,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:36,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:36,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 16:13:36,518 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)] === [2021-11-05 16:13:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:36,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2442495, now seen corresponding path program 1 times [2021-11-05 16:13:36,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:36,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452453457] [2021-11-05 16:13:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:36,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:13:36,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:36,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452453457] [2021-11-05 16:13:36,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452453457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:36,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:36,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 16:13:36,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708875504] [2021-11-05 16:13:36,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:36,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:36,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:36,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:36,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:36,635 INFO L87 Difference]: Start difference. First operand 2080 states and 2820 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:36,688 INFO L93 Difference]: Finished difference Result 2080 states and 2820 transitions. [2021-11-05 16:13:36,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:36,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-05 16:13:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:36,697 INFO L225 Difference]: With dead ends: 2080 [2021-11-05 16:13:36,698 INFO L226 Difference]: Without dead ends: 2071 [2021-11-05 16:13:36,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:36,699 INFO L933 BasicCegarLoop]: 774 mSDtfsCounter, 729 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:36,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 2.46ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 16:13:36,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2021-11-05 16:13:36,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2021-11-05 16:13:36,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 2026 states have (on average 1.3583415597235933) internal successors, (2752), 2030 states have internal predecessors, (2752), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 16:13:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2808 transitions. [2021-11-05 16:13:36,777 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2808 transitions. Word has length 47 [2021-11-05 16:13:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:36,778 INFO L470 AbstractCegarLoop]: Abstraction has 2071 states and 2808 transitions. [2021-11-05 16:13:36,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2808 transitions. [2021-11-05 16:13:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-05 16:13:36,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:36,781 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 16:13:36,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 16:13:36,781 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)] === [2021-11-05 16:13:36,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:36,782 INFO L85 PathProgramCache]: Analyzing trace with hash -529667920, now seen corresponding path program 1 times [2021-11-05 16:13:36,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:36,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278933834] [2021-11-05 16:13:36,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:36,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:13:36,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:36,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278933834] [2021-11-05 16:13:36,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278933834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:36,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:36,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:13:36,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702094442] [2021-11-05 16:13:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:36,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:36,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:36,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:36,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:36,878 INFO L87 Difference]: Start difference. First operand 2071 states and 2808 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) [2021-11-05 16:13:37,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:37,044 INFO L93 Difference]: Finished difference Result 4707 states and 6367 transitions. [2021-11-05 16:13:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:37,045 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 72 [2021-11-05 16:13:37,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:37,057 INFO L225 Difference]: With dead ends: 4707 [2021-11-05 16:13:37,057 INFO L226 Difference]: Without dead ends: 2694 [2021-11-05 16:13:37,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:37,063 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 276 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.02ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.85ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:37,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 1460 Invalid, 20 Unknown, 0 Unchecked, 3.02ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 44.85ms Time] [2021-11-05 16:13:37,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-11-05 16:13:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2689. [2021-11-05 16:13:37,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2689 states, 2644 states have (on average 1.3479576399394857) internal successors, (3564), 2648 states have internal predecessors, (3564), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 16:13:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 3620 transitions. [2021-11-05 16:13:37,165 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 3620 transitions. Word has length 72 [2021-11-05 16:13:37,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:37,166 INFO L470 AbstractCegarLoop]: Abstraction has 2689 states and 3620 transitions. [2021-11-05 16:13:37,166 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) [2021-11-05 16:13:37,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 3620 transitions. [2021-11-05 16:13:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 16:13:37,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:37,169 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:37,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 16:13:37,170 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)] === [2021-11-05 16:13:37,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:37,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2065425063, now seen corresponding path program 1 times [2021-11-05 16:13:37,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:37,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229633917] [2021-11-05 16:13:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:37,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 16:13:37,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:37,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229633917] [2021-11-05 16:13:37,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229633917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:37,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:37,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:13:37,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588500275] [2021-11-05 16:13:37,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:37,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:37,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:37,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:37,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:37,272 INFO L87 Difference]: Start difference. First operand 2689 states and 3620 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) [2021-11-05 16:13:38,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:38,292 INFO L93 Difference]: Finished difference Result 5991 states and 8079 transitions. [2021-11-05 16:13:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:38,293 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 84 [2021-11-05 16:13:38,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:38,306 INFO L225 Difference]: With dead ends: 5991 [2021-11-05 16:13:38,306 INFO L226 Difference]: Without dead ends: 3360 [2021-11-05 16:13:38,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:38,311 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 227 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 836.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 883.51ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:38,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 1718 Invalid, 30 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 883.51ms Time] [2021-11-05 16:13:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2021-11-05 16:13:38,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3355. [2021-11-05 16:13:38,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 3310 states have (on average 1.3425981873111783) internal successors, (4444), 3314 states have internal predecessors, (4444), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-05 16:13:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 4500 transitions. [2021-11-05 16:13:38,445 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 4500 transitions. Word has length 84 [2021-11-05 16:13:38,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:38,446 INFO L470 AbstractCegarLoop]: Abstraction has 3355 states and 4500 transitions. [2021-11-05 16:13:38,446 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) [2021-11-05 16:13:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 4500 transitions. [2021-11-05 16:13:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 16:13:38,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:38,449 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:38,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 16:13:38,450 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)] === [2021-11-05 16:13:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:38,450 INFO L85 PathProgramCache]: Analyzing trace with hash -884858301, now seen corresponding path program 1 times [2021-11-05 16:13:38,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:38,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136955288] [2021-11-05 16:13:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:38,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 16:13:38,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:38,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136955288] [2021-11-05 16:13:38,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136955288] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:13:38,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511099412] [2021-11-05 16:13:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:38,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:38,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:13:38,563 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) [2021-11-05 16:13:38,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 16:13:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:39,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:13:39,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:13:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 16:13:39,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:13:39,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511099412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:39,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:13:39,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 16:13:39,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482153472] [2021-11-05 16:13:39,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:39,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:39,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:39,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:39,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:13:39,389 INFO L87 Difference]: Start difference. First operand 3355 states and 4500 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:39,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:39,606 INFO L93 Difference]: Finished difference Result 7959 states and 10723 transitions. [2021-11-05 16:13:39,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:39,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-05 16:13:39,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:39,626 INFO L225 Difference]: With dead ends: 7959 [2021-11-05 16:13:39,626 INFO L226 Difference]: Without dead ends: 4662 [2021-11-05 16:13:39,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.68ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:13:39,633 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 612 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.47ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:39,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1356 Invalid, 31 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 47.47ms Time] [2021-11-05 16:13:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2021-11-05 16:13:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 4657. [2021-11-05 16:13:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4657 states, 4576 states have (on average 1.3513986013986015) internal successors, (6184), 4584 states have internal predecessors, (6184), 48 states have call successors, (48), 32 states have call predecessors, (48), 32 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-05 16:13:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4657 states to 4657 states and 6280 transitions. [2021-11-05 16:13:39,815 INFO L78 Accepts]: Start accepts. Automaton has 4657 states and 6280 transitions. Word has length 98 [2021-11-05 16:13:39,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:39,815 INFO L470 AbstractCegarLoop]: Abstraction has 4657 states and 6280 transitions. [2021-11-05 16:13:39,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 4657 states and 6280 transitions. [2021-11-05 16:13:39,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 16:13:39,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:39,823 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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] [2021-11-05 16:13:39,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 16:13:40,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:40,045 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)] === [2021-11-05 16:13:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1363892421, now seen corresponding path program 1 times [2021-11-05 16:13:40,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:40,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283109821] [2021-11-05 16:13:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:40,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-05 16:13:40,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:40,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283109821] [2021-11-05 16:13:40,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283109821] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:13:40,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77914740] [2021-11-05 16:13:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:40,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:40,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:13:40,186 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) [2021-11-05 16:13:40,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 16:13:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:40,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:13:40,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:13:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:13:40,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:13:40,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77914740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:40,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:13:40,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-05 16:13:40,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843938112] [2021-11-05 16:13:40,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:40,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:13:40,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:13:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:13:40,969 INFO L87 Difference]: Start difference. First operand 4657 states and 6280 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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) [2021-11-05 16:13:41,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:41,791 INFO L93 Difference]: Finished difference Result 13856 states and 18702 transitions. [2021-11-05 16:13:41,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:13:41,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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 113 [2021-11-05 16:13:41,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:41,864 INFO L225 Difference]: With dead ends: 13856 [2021-11-05 16:13:41,865 INFO L226 Difference]: Without dead ends: 13851 [2021-11-05 16:13:41,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.74ms TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:13:41,871 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 1414 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 389.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.98ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 423.56ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:41,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 2911 Invalid, 46 Unknown, 0 Unchecked, 6.98ms Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 423.56ms Time] [2021-11-05 16:13:41,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13851 states. [2021-11-05 16:13:42,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13851 to 13473. [2021-11-05 16:13:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13473 states, 13232 states have (on average 1.3553506650544136) internal successors, (17934), 13256 states have internal predecessors, (17934), 144 states have call successors, (144), 96 states have call predecessors, (144), 96 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2021-11-05 16:13:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13473 states to 13473 states and 18222 transitions. [2021-11-05 16:13:42,463 INFO L78 Accepts]: Start accepts. Automaton has 13473 states and 18222 transitions. Word has length 113 [2021-11-05 16:13:42,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:42,463 INFO L470 AbstractCegarLoop]: Abstraction has 13473 states and 18222 transitions. [2021-11-05 16:13:42,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 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) [2021-11-05 16:13:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 13473 states and 18222 transitions. [2021-11-05 16:13:42,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-05 16:13:42,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:42,476 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:42,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 16:13:42,691 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,SelfDestructingSolverStorable9 [2021-11-05 16:13:42,692 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)] === [2021-11-05 16:13:42,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1424796040, now seen corresponding path program 1 times [2021-11-05 16:13:42,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:42,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308470747] [2021-11-05 16:13:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:42,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-05 16:13:42,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:42,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308470747] [2021-11-05 16:13:42,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308470747] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:13:42,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650988921] [2021-11-05 16:13:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:42,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:42,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:13:42,808 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) [2021-11-05 16:13:42,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 16:13:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:43,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:13:43,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:13:43,631 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-05 16:13:43,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:13:43,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650988921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:43,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:13:43,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-05 16:13:43,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475917202] [2021-11-05 16:13:43,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:43,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:43,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:43,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:43,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:13:43,634 INFO L87 Difference]: Start difference. First operand 13473 states and 18222 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:44,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:44,285 INFO L93 Difference]: Finished difference Result 20508 states and 27760 transitions. [2021-11-05 16:13:44,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:44,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 120 [2021-11-05 16:13:44,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:44,306 INFO L225 Difference]: With dead ends: 20508 [2021-11-05 16:13:44,306 INFO L226 Difference]: Without dead ends: 6669 [2021-11-05 16:13:44,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.48ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:13:44,332 INFO L933 BasicCegarLoop]: 959 mSDtfsCounter, 634 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 318.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 344.37ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:44,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 1232 Invalid, 11 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 344.37ms Time] [2021-11-05 16:13:44,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6669 states. [2021-11-05 16:13:44,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6669 to 6669. [2021-11-05 16:13:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6548 states have (on average 1.3520158827122786) internal successors, (8853), 6560 states have internal predecessors, (8853), 72 states have call successors, (72), 48 states have call predecessors, (72), 48 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-05 16:13:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 8997 transitions. [2021-11-05 16:13:44,553 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 8997 transitions. Word has length 120 [2021-11-05 16:13:44,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:44,554 INFO L470 AbstractCegarLoop]: Abstraction has 6669 states and 8997 transitions. [2021-11-05 16:13:44,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:44,554 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 8997 transitions. [2021-11-05 16:13:44,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-05 16:13:44,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:44,563 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:44,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 16:13:44,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:44,792 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)] === [2021-11-05 16:13:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:44,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2032991633, now seen corresponding path program 1 times [2021-11-05 16:13:44,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:44,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136455677] [2021-11-05 16:13:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:44,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-05 16:13:44,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:44,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136455677] [2021-11-05 16:13:44,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136455677] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:44,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:44,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:13:44,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902491484] [2021-11-05 16:13:44,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:44,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:44,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:44,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:44,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:44,883 INFO L87 Difference]: Start difference. First operand 6669 states and 8997 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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) [2021-11-05 16:13:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:45,204 INFO L93 Difference]: Finished difference Result 17452 states and 23782 transitions. [2021-11-05 16:13:45,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:45,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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 127 [2021-11-05 16:13:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:45,237 INFO L225 Difference]: With dead ends: 17452 [2021-11-05 16:13:45,238 INFO L226 Difference]: Without dead ends: 10799 [2021-11-05 16:13:45,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:45,257 INFO L933 BasicCegarLoop]: 1248 mSDtfsCounter, 606 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.09ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.39ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:45,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1934 Invalid, 12 Unknown, 0 Unchecked, 3.09ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 32.39ms Time] [2021-11-05 16:13:45,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10799 states. [2021-11-05 16:13:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10799 to 10694. [2021-11-05 16:13:45,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10694 states, 10453 states have (on average 1.3712809719697694) internal successors, (14334), 10477 states have internal predecessors, (14334), 144 states have call successors, (144), 96 states have call predecessors, (144), 96 states have return successors, (144), 144 states have call predecessors, (144), 144 states have call successors, (144) [2021-11-05 16:13:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10694 states to 10694 states and 14622 transitions. [2021-11-05 16:13:45,670 INFO L78 Accepts]: Start accepts. Automaton has 10694 states and 14622 transitions. Word has length 127 [2021-11-05 16:13:45,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:45,670 INFO L470 AbstractCegarLoop]: Abstraction has 10694 states and 14622 transitions. [2021-11-05 16:13:45,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 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) [2021-11-05 16:13:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 10694 states and 14622 transitions. [2021-11-05 16:13:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-05 16:13:45,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:45,684 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:45,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 16:13:45,685 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)] === [2021-11-05 16:13:45,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:45,685 INFO L85 PathProgramCache]: Analyzing trace with hash -21511289, now seen corresponding path program 2 times [2021-11-05 16:13:45,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:45,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565092236] [2021-11-05 16:13:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:45,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-05 16:13:45,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:45,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565092236] [2021-11-05 16:13:45,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565092236] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:13:45,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733904032] [2021-11-05 16:13:45,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 16:13:45,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:45,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:13:45,788 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) [2021-11-05 16:13:45,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 16:13:46,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 16:13:46,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:13:47,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:13:47,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:13:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-05 16:13:47,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:13:47,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733904032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:47,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:13:47,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 16:13:47,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931137423] [2021-11-05 16:13:47,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:47,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:47,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:47,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:47,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:13:47,242 INFO L87 Difference]: Start difference. First operand 10694 states and 14622 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:47,723 INFO L93 Difference]: Finished difference Result 24076 states and 33075 transitions. [2021-11-05 16:13:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:47,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 127 [2021-11-05 16:13:47,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:47,769 INFO L225 Difference]: With dead ends: 24076 [2021-11-05 16:13:47,770 INFO L226 Difference]: Without dead ends: 13440 [2021-11-05 16:13:47,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.73ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:13:47,797 INFO L933 BasicCegarLoop]: 770 mSDtfsCounter, 717 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.55ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:47,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 1342 Invalid, 17 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 35.55ms Time] [2021-11-05 16:13:47,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13440 states. [2021-11-05 16:13:48,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13440 to 13112. [2021-11-05 16:13:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13112 states, 12791 states have (on average 1.3824564146665623) internal successors, (17683), 12823 states have internal predecessors, (17683), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:13:48,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13112 states to 13112 states and 18067 transitions. [2021-11-05 16:13:48,361 INFO L78 Accepts]: Start accepts. Automaton has 13112 states and 18067 transitions. Word has length 127 [2021-11-05 16:13:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:48,361 INFO L470 AbstractCegarLoop]: Abstraction has 13112 states and 18067 transitions. [2021-11-05 16:13:48,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 13112 states and 18067 transitions. [2021-11-05 16:13:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-05 16:13:48,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:48,372 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:48,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 16:13:48,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:48,595 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)] === [2021-11-05 16:13:48,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:48,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1867967264, now seen corresponding path program 1 times [2021-11-05 16:13:48,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:48,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204360679] [2021-11-05 16:13:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:48,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 52 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-05 16:13:48,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:48,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204360679] [2021-11-05 16:13:48,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204360679] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:13:48,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654152614] [2021-11-05 16:13:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:48,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:48,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:13:48,734 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) [2021-11-05 16:13:48,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 16:13:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:49,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 16:13:49,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:13:49,431 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-05 16:13:49,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:13:49,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654152614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:49,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:13:49,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-05 16:13:49,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440026884] [2021-11-05 16:13:49,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:49,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:49,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:49,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:49,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:13:49,434 INFO L87 Difference]: Start difference. First operand 13112 states and 18067 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:50,165 INFO L93 Difference]: Finished difference Result 25916 states and 35727 transitions. [2021-11-05 16:13:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:50,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 127 [2021-11-05 16:13:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:50,208 INFO L225 Difference]: With dead ends: 25916 [2021-11-05 16:13:50,208 INFO L226 Difference]: Without dead ends: 13117 [2021-11-05 16:13:50,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.03ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:13:50,231 INFO L933 BasicCegarLoop]: 1198 mSDtfsCounter, 566 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 261.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.89ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 294.96ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:50,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 1808 Invalid, 28 Unknown, 0 Unchecked, 2.89ms Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 294.96ms Time] [2021-11-05 16:13:50,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13117 states. [2021-11-05 16:13:50,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13117 to 13112. [2021-11-05 16:13:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13112 states, 12791 states have (on average 1.3781565163005238) internal successors, (17628), 12823 states have internal predecessors, (17628), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:13:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13112 states to 13112 states and 18012 transitions. [2021-11-05 16:13:50,577 INFO L78 Accepts]: Start accepts. Automaton has 13112 states and 18012 transitions. Word has length 127 [2021-11-05 16:13:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:50,578 INFO L470 AbstractCegarLoop]: Abstraction has 13112 states and 18012 transitions. [2021-11-05 16:13:50,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 13112 states and 18012 transitions. [2021-11-05 16:13:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-05 16:13:50,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:50,589 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:50,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-05 16:13:50,803 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,SelfDestructingSolverStorable13 [2021-11-05 16:13:50,804 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)] === [2021-11-05 16:13:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1372127101, now seen corresponding path program 1 times [2021-11-05 16:13:50,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:50,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411719828] [2021-11-05 16:13:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:50,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:13:50,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:50,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411719828] [2021-11-05 16:13:50,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411719828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:50,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:50,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 16:13:50,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191963195] [2021-11-05 16:13:50,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:50,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 16:13:50,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:50,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 16:13:50,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:50,917 INFO L87 Difference]: Start difference. First operand 13112 states and 18012 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:51,313 INFO L93 Difference]: Finished difference Result 25943 states and 35661 transitions. [2021-11-05 16:13:51,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 16:13:51,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 130 [2021-11-05 16:13:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:51,349 INFO L225 Difference]: With dead ends: 25943 [2021-11-05 16:13:51,350 INFO L226 Difference]: Without dead ends: 13144 [2021-11-05 16:13:51,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 16:13:51,373 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 1 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.05ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:51,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1529 Invalid, 6 Unknown, 0 Unchecked, 1.66ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 11.05ms Time] [2021-11-05 16:13:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13144 states. [2021-11-05 16:13:51,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13144 to 13128. [2021-11-05 16:13:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13128 states, 12807 states have (on average 1.3776840790192864) internal successors, (17644), 12839 states have internal predecessors, (17644), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:13:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13128 states to 13128 states and 18028 transitions. [2021-11-05 16:13:51,718 INFO L78 Accepts]: Start accepts. Automaton has 13128 states and 18028 transitions. Word has length 130 [2021-11-05 16:13:51,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:51,718 INFO L470 AbstractCegarLoop]: Abstraction has 13128 states and 18028 transitions. [2021-11-05 16:13:51,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:51,719 INFO L276 IsEmpty]: Start isEmpty. Operand 13128 states and 18028 transitions. [2021-11-05 16:13:51,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-05 16:13:51,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:51,730 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:51,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 16:13:51,730 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)] === [2021-11-05 16:13:51,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:51,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1086317855, now seen corresponding path program 1 times [2021-11-05 16:13:51,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:51,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805491595] [2021-11-05 16:13:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:51,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:13:51,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:51,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805491595] [2021-11-05 16:13:51,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805491595] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:13:51,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593799348] [2021-11-05 16:13:51,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:51,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:51,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:13:51,899 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) [2021-11-05 16:13:51,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 16:13:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:52,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:13:52,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:13:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:13:52,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:13:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:13:52,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593799348] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:13:52,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:13:52,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 16:13:52,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630839775] [2021-11-05 16:13:52,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:13:52,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:13:52,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:13:52,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:13:52,904 INFO L87 Difference]: Start difference. First operand 13128 states and 18028 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:53,305 INFO L93 Difference]: Finished difference Result 26039 states and 35789 transitions. [2021-11-05 16:13:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 16:13:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-05 16:13:53,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:53,348 INFO L225 Difference]: With dead ends: 26039 [2021-11-05 16:13:53,349 INFO L226 Difference]: Without dead ends: 13224 [2021-11-05 16:13:53,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 15.13ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:13:53,377 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 4 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.74ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.19ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:53,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3055 Invalid, 21 Unknown, 0 Unchecked, 3.74ms Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 24.19ms Time] [2021-11-05 16:13:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13224 states. [2021-11-05 16:13:53,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13224 to 13224. [2021-11-05 16:13:53,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13224 states, 12903 states have (on average 1.3748740602960552) internal successors, (17740), 12935 states have internal predecessors, (17740), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:13:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13224 states to 13224 states and 18124 transitions. [2021-11-05 16:13:53,883 INFO L78 Accepts]: Start accepts. Automaton has 13224 states and 18124 transitions. Word has length 132 [2021-11-05 16:13:53,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:53,883 INFO L470 AbstractCegarLoop]: Abstraction has 13224 states and 18124 transitions. [2021-11-05 16:13:53,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand 13224 states and 18124 transitions. [2021-11-05 16:13:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 16:13:53,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:53,895 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:53,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-05 16:13:54,123 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,SelfDestructingSolverStorable15 [2021-11-05 16:13:54,124 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)] === [2021-11-05 16:13:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash -834057997, now seen corresponding path program 2 times [2021-11-05 16:13:54,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:54,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340099576] [2021-11-05 16:13:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:54,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-05 16:13:54,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:54,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340099576] [2021-11-05 16:13:54,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340099576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:54,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:13:54,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 16:13:54,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077742283] [2021-11-05 16:13:54,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:54,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:13:54,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:13:54,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:13:54,265 INFO L87 Difference]: Start difference. First operand 13224 states and 18124 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:55,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:55,578 INFO L93 Difference]: Finished difference Result 61410 states and 83858 transitions. [2021-11-05 16:13:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 16:13:55,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-05 16:13:55,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:55,687 INFO L225 Difference]: With dead ends: 61410 [2021-11-05 16:13:55,688 INFO L226 Difference]: Without dead ends: 48499 [2021-11-05 16:13:55,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.94ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:13:55,717 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 2823 mSDsluCounter, 3727 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2825 SdHoareTripleChecker+Valid, 5272 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.60ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.66ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:55,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2825 Valid, 5272 Invalid, 79 Unknown, 0 Unchecked, 8.60ms Time], IncrementalHoareTripleChecker [23 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 61.66ms Time] [2021-11-05 16:13:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48499 states. [2021-11-05 16:13:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48499 to 13336. [2021-11-05 16:13:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13336 states, 13015 states have (on average 1.3759508259700346) internal successors, (17908), 13047 states have internal predecessors, (17908), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:13:56,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 18292 transitions. [2021-11-05 16:13:56,389 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 18292 transitions. Word has length 138 [2021-11-05 16:13:56,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:56,390 INFO L470 AbstractCegarLoop]: Abstraction has 13336 states and 18292 transitions. [2021-11-05 16:13:56,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 18292 transitions. [2021-11-05 16:13:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-05 16:13:56,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:56,401 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:56,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 16:13:56,401 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)] === [2021-11-05 16:13:56,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:56,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2052549296, now seen corresponding path program 1 times [2021-11-05 16:13:56,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:56,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128552964] [2021-11-05 16:13:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:56,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:13:56,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:56,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128552964] [2021-11-05 16:13:56,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128552964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:13:56,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990403580] [2021-11-05 16:13:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:56,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:56,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:13:56,534 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) [2021-11-05 16:13:56,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 16:13:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:57,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-05 16:13:57,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:13:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:13:57,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:13:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:13:57,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990403580] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:13:57,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:13:57,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-05 16:13:57,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927858972] [2021-11-05 16:13:57,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:13:57,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 16:13:57,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:57,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 16:13:57,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-05 16:13:57,459 INFO L87 Difference]: Start difference. First operand 13336 states and 18292 transitions. Second operand has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:13:57,927 INFO L93 Difference]: Finished difference Result 26551 states and 36461 transitions. [2021-11-05 16:13:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 16:13:57,927 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-11-05 16:13:57,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:13:57,962 INFO L225 Difference]: With dead ends: 26551 [2021-11-05 16:13:57,962 INFO L226 Difference]: Without dead ends: 13528 [2021-11-05 16:13:57,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 48.44ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-05 16:13:57,986 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 10 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.55ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.91ms IncrementalHoareTripleChecker+Time [2021-11-05 16:13:57,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2292 Invalid, 35 Unknown, 0 Unchecked, 1.55ms Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 43.91ms Time] [2021-11-05 16:13:57,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13528 states. [2021-11-05 16:13:58,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13528 to 13528. [2021-11-05 16:13:58,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13528 states, 13207 states have (on average 1.370485348678731) internal successors, (18100), 13239 states have internal predecessors, (18100), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:13:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13528 states to 13528 states and 18484 transitions. [2021-11-05 16:13:58,563 INFO L78 Accepts]: Start accepts. Automaton has 13528 states and 18484 transitions. Word has length 138 [2021-11-05 16:13:58,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:13:58,564 INFO L470 AbstractCegarLoop]: Abstraction has 13528 states and 18484 transitions. [2021-11-05 16:13:58,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:13:58,564 INFO L276 IsEmpty]: Start isEmpty. Operand 13528 states and 18484 transitions. [2021-11-05 16:13:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-05 16:13:58,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:13:58,576 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:13:58,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 16:13:58,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:58,804 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)] === [2021-11-05 16:13:58,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:13:58,804 INFO L85 PathProgramCache]: Analyzing trace with hash 906502153, now seen corresponding path program 1 times [2021-11-05 16:13:58,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:13:58,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535724572] [2021-11-05 16:13:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:58,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:13:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 65 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-05 16:13:58,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:13:58,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535724572] [2021-11-05 16:13:58,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535724572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:13:58,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817661247] [2021-11-05 16:13:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:13:58,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:13:58,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:13:58,922 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) [2021-11-05 16:13:58,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 16:13:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:13:59,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-05 16:13:59,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:13:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:13:59,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:13:59,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817661247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:13:59,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:13:59,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-05 16:13:59,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416471745] [2021-11-05 16:13:59,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:13:59,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 16:13:59,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:13:59,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 16:13:59,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:13:59,609 INFO L87 Difference]: Start difference. First operand 13528 states and 18484 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:01,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:01,290 INFO L93 Difference]: Finished difference Result 37236 states and 50814 transitions. [2021-11-05 16:14:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 16:14:01,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2021-11-05 16:14:01,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:01,355 INFO L225 Difference]: With dead ends: 37236 [2021-11-05 16:14:01,355 INFO L226 Difference]: Without dead ends: 23766 [2021-11-05 16:14:01,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.32ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-05 16:14:01,393 INFO L933 BasicCegarLoop]: 1426 mSDtfsCounter, 1369 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 361.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.96ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 410.23ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:01,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 4328 Invalid, 52 Unknown, 0 Unchecked, 11.96ms Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 410.23ms Time] [2021-11-05 16:14:01,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23766 states. [2021-11-05 16:14:02,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23766 to 13633. [2021-11-05 16:14:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13633 states, 13312 states have (on average 1.3675631009615385) internal successors, (18205), 13344 states have internal predecessors, (18205), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:14:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13633 states to 13633 states and 18589 transitions. [2021-11-05 16:14:02,152 INFO L78 Accepts]: Start accepts. Automaton has 13633 states and 18589 transitions. Word has length 142 [2021-11-05 16:14:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:02,152 INFO L470 AbstractCegarLoop]: Abstraction has 13633 states and 18589 transitions. [2021-11-05 16:14:02,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:02,152 INFO L276 IsEmpty]: Start isEmpty. Operand 13633 states and 18589 transitions. [2021-11-05 16:14:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-05 16:14:02,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:02,158 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:14:02,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 16:14:02,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:02,380 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)] === [2021-11-05 16:14:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash 43122242, now seen corresponding path program 1 times [2021-11-05 16:14:02,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:02,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872813131] [2021-11-05 16:14:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:02,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-05 16:14:02,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:02,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872813131] [2021-11-05 16:14:02,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872813131] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:14:02,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511600426] [2021-11-05 16:14:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:02,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:02,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:14:02,514 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) [2021-11-05 16:14:02,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 16:14:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:03,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 16:14:03,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:14:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-05 16:14:03,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:14:03,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511600426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:03,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:14:03,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-05 16:14:03,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662125783] [2021-11-05 16:14:03,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:03,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:14:03,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:03,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:14:03,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:14:03,192 INFO L87 Difference]: Start difference. First operand 13633 states and 18589 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:03,901 INFO L93 Difference]: Finished difference Result 34039 states and 46311 transitions. [2021-11-05 16:14:03,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 16:14:03,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-05 16:14:03,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:03,939 INFO L225 Difference]: With dead ends: 34039 [2021-11-05 16:14:03,939 INFO L226 Difference]: Without dead ends: 20724 [2021-11-05 16:14:03,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.38ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-05 16:14:03,967 INFO L933 BasicCegarLoop]: 1121 mSDtfsCounter, 708 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.59ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.94ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:03,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 2652 Invalid, 13 Unknown, 0 Unchecked, 2.59ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 10.94ms Time] [2021-11-05 16:14:03,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20724 states. [2021-11-05 16:14:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20724 to 13665. [2021-11-05 16:14:04,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13665 states, 13344 states have (on average 1.366681654676259) internal successors, (18237), 13376 states have internal predecessors, (18237), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:14:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 18621 transitions. [2021-11-05 16:14:04,520 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 18621 transitions. Word has length 143 [2021-11-05 16:14:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:04,520 INFO L470 AbstractCegarLoop]: Abstraction has 13665 states and 18621 transitions. [2021-11-05 16:14:04,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 18621 transitions. [2021-11-05 16:14:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-05 16:14:04,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:04,527 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:14:04,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-05 16:14:04,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:04,743 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)] === [2021-11-05 16:14:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1594910680, now seen corresponding path program 1 times [2021-11-05 16:14:04,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:04,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508720845] [2021-11-05 16:14:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:04,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-05 16:14:04,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:04,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508720845] [2021-11-05 16:14:04,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508720845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:04,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:04,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:14:04,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802784305] [2021-11-05 16:14:04,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:04,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:14:04,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:04,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:14:04,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:14:04,903 INFO L87 Difference]: Start difference. First operand 13665 states and 18621 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:06,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:06,719 INFO L93 Difference]: Finished difference Result 50373 states and 68316 transitions. [2021-11-05 16:14:06,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:14:06,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-05 16:14:06,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:06,776 INFO L225 Difference]: With dead ends: 50373 [2021-11-05 16:14:06,776 INFO L226 Difference]: Without dead ends: 37026 [2021-11-05 16:14:06,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.32ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:14:06,796 INFO L933 BasicCegarLoop]: 1245 mSDtfsCounter, 1323 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.82ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.18ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:06,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1327 Valid, 3198 Invalid, 108 Unknown, 0 Unchecked, 5.82ms Time], IncrementalHoareTripleChecker [17 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 97.18ms Time] [2021-11-05 16:14:06,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37026 states. [2021-11-05 16:14:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37026 to 13793. [2021-11-05 16:14:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13793 states, 13472 states have (on average 1.3655730403800475) internal successors, (18397), 13504 states have internal predecessors, (18397), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:14:07,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13793 states to 13793 states and 18781 transitions. [2021-11-05 16:14:07,541 INFO L78 Accepts]: Start accepts. Automaton has 13793 states and 18781 transitions. Word has length 145 [2021-11-05 16:14:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:07,541 INFO L470 AbstractCegarLoop]: Abstraction has 13793 states and 18781 transitions. [2021-11-05 16:14:07,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 13793 states and 18781 transitions. [2021-11-05 16:14:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-05 16:14:07,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:07,548 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:14:07,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 16:14:07,549 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)] === [2021-11-05 16:14:07,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 98618116, now seen corresponding path program 1 times [2021-11-05 16:14:07,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:07,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149635623] [2021-11-05 16:14:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:07,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-05 16:14:07,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:07,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149635623] [2021-11-05 16:14:07,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149635623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:07,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:07,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 16:14:07,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971739649] [2021-11-05 16:14:07,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:07,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 16:14:07,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:07,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 16:14:07,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-05 16:14:07,876 INFO L87 Difference]: Start difference. First operand 13793 states and 18781 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:15,287 INFO L93 Difference]: Finished difference Result 86788 states and 117350 transitions. [2021-11-05 16:14:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-05 16:14:15,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 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 147 [2021-11-05 16:14:15,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:15,428 INFO L225 Difference]: With dead ends: 86788 [2021-11-05 16:14:15,428 INFO L226 Difference]: Without dead ends: 73313 [2021-11-05 16:14:15,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1741 ImplicationChecksByTransitivity, 1160.80ms TimeCoverageRelationStatistics Valid=896, Invalid=3796, Unknown=0, NotChecked=0, Total=4692 [2021-11-05 16:14:15,465 INFO L933 BasicCegarLoop]: 3733 mSDtfsCounter, 6076 mSDsluCounter, 16308 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1299.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6076 SdHoareTripleChecker+Valid, 20041 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.51ms SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1483.29ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:15,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6076 Valid, 20041 Invalid, 1196 Unknown, 0 Unchecked, 28.51ms Time], IncrementalHoareTripleChecker [125 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1483.29ms Time] [2021-11-05 16:14:15,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73313 states. [2021-11-05 16:14:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73313 to 13793. [2021-11-05 16:14:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13793 states, 13472 states have (on average 1.364979216152019) internal successors, (18389), 13504 states have internal predecessors, (18389), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:14:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13793 states to 13793 states and 18773 transitions. [2021-11-05 16:14:16,803 INFO L78 Accepts]: Start accepts. Automaton has 13793 states and 18773 transitions. Word has length 147 [2021-11-05 16:14:16,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:16,803 INFO L470 AbstractCegarLoop]: Abstraction has 13793 states and 18773 transitions. [2021-11-05 16:14:16,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:16,804 INFO L276 IsEmpty]: Start isEmpty. Operand 13793 states and 18773 transitions. [2021-11-05 16:14:16,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-05 16:14:16,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:16,810 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:14:16,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 16:14:16,811 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-05 16:14:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:16,811 INFO L85 PathProgramCache]: Analyzing trace with hash -679863212, now seen corresponding path program 1 times [2021-11-05 16:14:16,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:16,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340832938] [2021-11-05 16:14:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:16,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:14:17,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:17,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340832938] [2021-11-05 16:14:17,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340832938] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:14:17,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66814895] [2021-11-05 16:14:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:17,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:17,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:14:17,004 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) [2021-11-05 16:14:17,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-05 16:14:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:17,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-05 16:14:17,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:14:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:14:17,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:14:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:14:18,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66814895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:14:18,100 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:14:18,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-05 16:14:18,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416596197] [2021-11-05 16:14:18,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:14:18,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-05 16:14:18,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:18,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-05 16:14:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-05 16:14:18,102 INFO L87 Difference]: Start difference. First operand 13793 states and 18773 transitions. Second operand has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:19,114 INFO L93 Difference]: Finished difference Result 27652 states and 37706 transitions. [2021-11-05 16:14:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 16:14:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 0 states have call successors, (0), 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 152 [2021-11-05 16:14:19,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:19,146 INFO L225 Difference]: With dead ends: 27652 [2021-11-05 16:14:19,146 INFO L226 Difference]: Without dead ends: 14177 [2021-11-05 16:14:19,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 179.19ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-05 16:14:19,167 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 22 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3818 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.20ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.65ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:19,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 3818 Invalid, 68 Unknown, 0 Unchecked, 2.20ms Time], IncrementalHoareTripleChecker [15 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 70.65ms Time] [2021-11-05 16:14:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14177 states. [2021-11-05 16:14:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14177 to 14177. [2021-11-05 16:14:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14177 states, 13856 states have (on average 1.3548643187066975) internal successors, (18773), 13888 states have internal predecessors, (18773), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:14:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14177 states to 14177 states and 19157 transitions. [2021-11-05 16:14:20,435 INFO L78 Accepts]: Start accepts. Automaton has 14177 states and 19157 transitions. Word has length 152 [2021-11-05 16:14:20,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:20,436 INFO L470 AbstractCegarLoop]: Abstraction has 14177 states and 19157 transitions. [2021-11-05 16:14:20,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:20,437 INFO L276 IsEmpty]: Start isEmpty. Operand 14177 states and 19157 transitions. [2021-11-05 16:14:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-05 16:14:20,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:20,443 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:14:20,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-05 16:14:20,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-05 16:14:20,644 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)] === [2021-11-05 16:14:20,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:20,645 INFO L85 PathProgramCache]: Analyzing trace with hash -620383506, now seen corresponding path program 1 times [2021-11-05 16:14:20,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:20,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290291085] [2021-11-05 16:14:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:20,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:14:20,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:20,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290291085] [2021-11-05 16:14:20,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290291085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:20,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:20,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 16:14:20,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215535456] [2021-11-05 16:14:20,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:20,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 16:14:20,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 16:14:20,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 16:14:20,894 INFO L87 Difference]: Start difference. First operand 14177 states and 19157 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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) [2021-11-05 16:14:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:23,450 INFO L93 Difference]: Finished difference Result 39670 states and 53622 transitions. [2021-11-05 16:14:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 16:14:23,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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 153 [2021-11-05 16:14:23,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:23,503 INFO L225 Difference]: With dead ends: 39670 [2021-11-05 16:14:23,503 INFO L226 Difference]: Without dead ends: 25811 [2021-11-05 16:14:23,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.05ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 16:14:23,528 INFO L933 BasicCegarLoop]: 1305 mSDtfsCounter, 979 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 363.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.99ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 401.00ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:23,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 3361 Invalid, 16 Unknown, 0 Unchecked, 5.99ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 401.00ms Time] [2021-11-05 16:14:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25811 states. [2021-11-05 16:14:24,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25811 to 14209. [2021-11-05 16:14:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14209 states, 13888 states have (on average 1.354046658986175) internal successors, (18805), 13920 states have internal predecessors, (18805), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:14:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14209 states to 14209 states and 19189 transitions. [2021-11-05 16:14:24,588 INFO L78 Accepts]: Start accepts. Automaton has 14209 states and 19189 transitions. Word has length 153 [2021-11-05 16:14:24,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:24,588 INFO L470 AbstractCegarLoop]: Abstraction has 14209 states and 19189 transitions. [2021-11-05 16:14:24,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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) [2021-11-05 16:14:24,589 INFO L276 IsEmpty]: Start isEmpty. Operand 14209 states and 19189 transitions. [2021-11-05 16:14:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-05 16:14:24,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:24,595 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:14:24,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 16:14:24,595 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)] === [2021-11-05 16:14:24,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:24,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1937736570, now seen corresponding path program 1 times [2021-11-05 16:14:24,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:24,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179848185] [2021-11-05 16:14:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:24,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-05 16:14:24,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:24,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179848185] [2021-11-05 16:14:24,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179848185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:24,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:14:24,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 16:14:24,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679249634] [2021-11-05 16:14:24,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:24,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 16:14:24,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:24,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 16:14:24,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 16:14:24,727 INFO L87 Difference]: Start difference. First operand 14209 states and 19189 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:27,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:27,139 INFO L93 Difference]: Finished difference Result 40054 states and 54086 transitions. [2021-11-05 16:14:27,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 16:14:27,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 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 165 [2021-11-05 16:14:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:27,193 INFO L225 Difference]: With dead ends: 40054 [2021-11-05 16:14:27,193 INFO L226 Difference]: Without dead ends: 26163 [2021-11-05 16:14:27,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 64.81ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-05 16:14:27,219 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 1923 mSDsluCounter, 5663 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 286.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 6953 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.18ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 332.22ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:27,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1923 Valid, 6953 Invalid, 104 Unknown, 0 Unchecked, 6.18ms Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 332.22ms Time] [2021-11-05 16:14:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26163 states. [2021-11-05 16:14:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26163 to 14321. [2021-11-05 16:14:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14321 states, 14000 states have (on average 1.3512142857142857) internal successors, (18917), 14032 states have internal predecessors, (18917), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:14:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14321 states to 14321 states and 19301 transitions. [2021-11-05 16:14:28,468 INFO L78 Accepts]: Start accepts. Automaton has 14321 states and 19301 transitions. Word has length 165 [2021-11-05 16:14:28,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:28,468 INFO L470 AbstractCegarLoop]: Abstraction has 14321 states and 19301 transitions. [2021-11-05 16:14:28,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:28,469 INFO L276 IsEmpty]: Start isEmpty. Operand 14321 states and 19301 transitions. [2021-11-05 16:14:28,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-05 16:14:28,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:28,473 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:14:28,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 16:14:28,474 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)] === [2021-11-05 16:14:28,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1306670684, now seen corresponding path program 2 times [2021-11-05 16:14:28,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:28,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352418301] [2021-11-05 16:14:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:28,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:14:28,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:28,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352418301] [2021-11-05 16:14:28,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352418301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:14:28,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511715588] [2021-11-05 16:14:28,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 16:14:28,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:28,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:14:28,868 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:14:28,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-05 16:14:29,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-05 16:14:29,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:14:29,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-05 16:14:29,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:14:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:14:30,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:14:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:14:30,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511715588] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:14:30,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:14:30,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-11-05 16:14:30,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023233659] [2021-11-05 16:14:30,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:14:30,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-05 16:14:30,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:30,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-05 16:14:30,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-05 16:14:30,857 INFO L87 Difference]: Start difference. First operand 14321 states and 19301 transitions. Second operand has 49 states, 49 states have (on average 4.3061224489795915) internal successors, (211), 49 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:32,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:32,189 INFO L93 Difference]: Finished difference Result 29092 states and 39338 transitions. [2021-11-05 16:14:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-05 16:14:32,189 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.3061224489795915) internal successors, (211), 49 states have internal predecessors, (211), 0 states have call successors, (0), 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 176 [2021-11-05 16:14:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:32,222 INFO L225 Difference]: With dead ends: 29092 [2021-11-05 16:14:32,222 INFO L226 Difference]: Without dead ends: 15089 [2021-11-05 16:14:32,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 728.64ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-05 16:14:32,246 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 69 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.40ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:32,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2292 Invalid, 126 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [29 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 113.40ms Time] [2021-11-05 16:14:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15089 states. [2021-11-05 16:14:33,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15089 to 15089. [2021-11-05 16:14:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15089 states, 14768 states have (on average 1.3329496208017335) internal successors, (19685), 14800 states have internal predecessors, (19685), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:14:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15089 states to 15089 states and 20069 transitions. [2021-11-05 16:14:33,582 INFO L78 Accepts]: Start accepts. Automaton has 15089 states and 20069 transitions. Word has length 176 [2021-11-05 16:14:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:33,582 INFO L470 AbstractCegarLoop]: Abstraction has 15089 states and 20069 transitions. [2021-11-05 16:14:33,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.3061224489795915) internal successors, (211), 49 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:33,583 INFO L276 IsEmpty]: Start isEmpty. Operand 15089 states and 20069 transitions. [2021-11-05 16:14:33,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-05 16:14:33,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:33,588 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:14:33,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-05 16:14:33,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-05 16:14:33,789 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)] === [2021-11-05 16:14:33,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:33,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1201165380, now seen corresponding path program 3 times [2021-11-05 16:14:33,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:33,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807886526] [2021-11-05 16:14:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:33,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:14:34,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:34,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807886526] [2021-11-05 16:14:34,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807886526] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:14:34,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276355229] [2021-11-05 16:14:34,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-05 16:14:34,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:34,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:14:34,896 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:14:34,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-05 16:14:36,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-05 16:14:36,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 16:14:36,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-05 16:14:36,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:14:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 2137 trivial. 0 not checked. [2021-11-05 16:14:37,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 16:14:37,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276355229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:14:37,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 16:14:37,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [49] total 56 [2021-11-05 16:14:37,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812562016] [2021-11-05 16:14:37,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:14:37,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 16:14:37,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:37,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 16:14:37,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2021-11-05 16:14:37,198 INFO L87 Difference]: Start difference. First operand 15089 states and 20069 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:51,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:51,542 INFO L93 Difference]: Finished difference Result 102906 states and 133824 transitions. [2021-11-05 16:14:51,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-05 16:14:51,543 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 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 224 [2021-11-05 16:14:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:51,919 INFO L225 Difference]: With dead ends: 102906 [2021-11-05 16:14:51,920 INFO L226 Difference]: Without dead ends: 88135 [2021-11-05 16:14:51,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 3139.75ms TimeCoverageRelationStatistics Valid=2071, Invalid=11269, Unknown=0, NotChecked=0, Total=13340 [2021-11-05 16:14:51,956 INFO L933 BasicCegarLoop]: 3786 mSDtfsCounter, 5380 mSDsluCounter, 18053 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 865.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5380 SdHoareTripleChecker+Valid, 21839 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.90ms SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1026.08ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:51,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5380 Valid, 21839 Invalid, 1216 Unknown, 0 Unchecked, 29.90ms Time], IncrementalHoareTripleChecker [127 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1026.08ms Time] [2021-11-05 16:14:52,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88135 states. [2021-11-05 16:14:54,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88135 to 15089. [2021-11-05 16:14:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15089 states, 14768 states have (on average 1.3324079089924161) internal successors, (19677), 14800 states have internal predecessors, (19677), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:14:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15089 states to 15089 states and 20061 transitions. [2021-11-05 16:14:54,047 INFO L78 Accepts]: Start accepts. Automaton has 15089 states and 20061 transitions. Word has length 224 [2021-11-05 16:14:54,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:14:54,048 INFO L470 AbstractCegarLoop]: Abstraction has 15089 states and 20061 transitions. [2021-11-05 16:14:54,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:54,048 INFO L276 IsEmpty]: Start isEmpty. Operand 15089 states and 20061 transitions. [2021-11-05 16:14:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-05 16:14:54,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:14:54,055 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:14:54,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-05 16:14:54,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-05 16:14:54,264 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)] === [2021-11-05 16:14:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:14:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1402209096, now seen corresponding path program 1 times [2021-11-05 16:14:54,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:14:54,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817234097] [2021-11-05 16:14:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:54,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:14:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:55,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:14:55,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:14:55,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817234097] [2021-11-05 16:14:55,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817234097] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 16:14:55,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395250966] [2021-11-05 16:14:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:14:55,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 16:14:55,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 16:14:55,324 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 16:14:55,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-05 16:14:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:14:55,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-05 16:14:55,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 16:14:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:14:56,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 16:14:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-05 16:14:57,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395250966] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 16:14:57,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 16:14:57,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 67 [2021-11-05 16:14:57,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212964364] [2021-11-05 16:14:57,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 16:14:57,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-05 16:14:57,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:14:57,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-05 16:14:57,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-11-05 16:14:57,184 INFO L87 Difference]: Start difference. First operand 15089 states and 20061 transitions. Second operand has 67 states, 67 states have (on average 3.8208955223880596) internal successors, (256), 67 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:14:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:14:59,080 INFO L93 Difference]: Finished difference Result 30436 states and 40570 transitions. [2021-11-05 16:14:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-05 16:14:59,081 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.8208955223880596) internal successors, (256), 67 states have internal predecessors, (256), 0 states have call successors, (0), 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 231 [2021-11-05 16:14:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:14:59,106 INFO L225 Difference]: With dead ends: 30436 [2021-11-05 16:14:59,107 INFO L226 Difference]: Without dead ends: 15665 [2021-11-05 16:14:59,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1412.02ms TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-11-05 16:14:59,125 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 64 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.11ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.33ms IncrementalHoareTripleChecker+Time [2021-11-05 16:14:59,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 3055 Invalid, 144 Unknown, 0 Unchecked, 2.11ms Time], IncrementalHoareTripleChecker [7 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 115.33ms Time] [2021-11-05 16:14:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15665 states. [2021-11-05 16:15:01,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15665 to 15665. [2021-11-05 16:15:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15665 states, 15344 states have (on average 1.319929614181439) internal successors, (20253), 15376 states have internal predecessors, (20253), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:15:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15665 states to 15665 states and 20637 transitions. [2021-11-05 16:15:01,074 INFO L78 Accepts]: Start accepts. Automaton has 15665 states and 20637 transitions. Word has length 231 [2021-11-05 16:15:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:15:01,074 INFO L470 AbstractCegarLoop]: Abstraction has 15665 states and 20637 transitions. [2021-11-05 16:15:01,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.8208955223880596) internal successors, (256), 67 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:01,074 INFO L276 IsEmpty]: Start isEmpty. Operand 15665 states and 20637 transitions. [2021-11-05 16:15:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-05 16:15:01,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:15:01,081 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:15:01,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-05 16:15:01,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-05 16:15:01,281 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)] === [2021-11-05 16:15:01,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:15:01,282 INFO L85 PathProgramCache]: Analyzing trace with hash -896357808, now seen corresponding path program 2 times [2021-11-05 16:15:01,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:15:01,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18943254] [2021-11-05 16:15:01,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:01,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:15:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4155 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 4117 trivial. 0 not checked. [2021-11-05 16:15:01,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:15:01,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18943254] [2021-11-05 16:15:01,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18943254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:15:01,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:15:01,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 16:15:01,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501229705] [2021-11-05 16:15:01,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:15:01,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 16:15:01,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:15:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 16:15:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 16:15:01,595 INFO L87 Difference]: Start difference. First operand 15665 states and 20637 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:07,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:15:07,487 INFO L93 Difference]: Finished difference Result 63609 states and 85454 transitions. [2021-11-05 16:15:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 16:15:07,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2021-11-05 16:15:07,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:15:07,573 INFO L225 Difference]: With dead ends: 63609 [2021-11-05 16:15:07,573 INFO L226 Difference]: Without dead ends: 48262 [2021-11-05 16:15:07,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 70.40ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-05 16:15:07,598 INFO L933 BasicCegarLoop]: 1246 mSDtfsCounter, 2496 mSDsluCounter, 5024 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 6270 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.27ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.91ms IncrementalHoareTripleChecker+Time [2021-11-05 16:15:07,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2498 Valid, 6270 Invalid, 204 Unknown, 0 Unchecked, 7.27ms Time], IncrementalHoareTripleChecker [22 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 152.91ms Time] [2021-11-05 16:15:07,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48262 states. [2021-11-05 16:15:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48262 to 15729. [2021-11-05 16:15:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15729 states, 15408 states have (on average 1.3186007268951194) internal successors, (20317), 15440 states have internal predecessors, (20317), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:15:09,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15729 states to 15729 states and 20701 transitions. [2021-11-05 16:15:09,872 INFO L78 Accepts]: Start accepts. Automaton has 15729 states and 20701 transitions. Word has length 267 [2021-11-05 16:15:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:15:09,872 INFO L470 AbstractCegarLoop]: Abstraction has 15729 states and 20701 transitions. [2021-11-05 16:15:09,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 15729 states and 20701 transitions. [2021-11-05 16:15:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-05 16:15:09,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:15:09,879 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:15:09,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 16:15:09,879 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)] === [2021-11-05 16:15:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:15:09,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1900859572, now seen corresponding path program 1 times [2021-11-05 16:15:09,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:15:09,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598593964] [2021-11-05 16:15:09,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:09,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:15:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4155 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 4117 trivial. 0 not checked. [2021-11-05 16:15:10,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:15:10,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598593964] [2021-11-05 16:15:10,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598593964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:15:10,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:15:10,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 16:15:10,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672374021] [2021-11-05 16:15:10,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:15:10,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 16:15:10,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:15:10,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 16:15:10,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-05 16:15:10,524 INFO L87 Difference]: Start difference. First operand 15729 states and 20701 transitions. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:29,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:15:29,630 INFO L93 Difference]: Finished difference Result 102086 states and 133804 transitions. [2021-11-05 16:15:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-05 16:15:29,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2021-11-05 16:15:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:15:29,778 INFO L225 Difference]: With dead ends: 102086 [2021-11-05 16:15:29,778 INFO L226 Difference]: Without dead ends: 81987 [2021-11-05 16:15:29,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2830 ImplicationChecksByTransitivity, 2105.58ms TimeCoverageRelationStatistics Valid=1485, Invalid=5997, Unknown=0, NotChecked=0, Total=7482 [2021-11-05 16:15:29,819 INFO L933 BasicCegarLoop]: 2868 mSDtfsCounter, 8014 mSDsluCounter, 14694 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1958.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8014 SdHoareTripleChecker+Valid, 17562 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.25ms SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2215.96ms IncrementalHoareTripleChecker+Time [2021-11-05 16:15:29,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8014 Valid, 17562 Invalid, 1367 Unknown, 0 Unchecked, 31.25ms Time], IncrementalHoareTripleChecker [170 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 2215.96ms Time] [2021-11-05 16:15:29,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81987 states. [2021-11-05 16:15:33,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81987 to 20075. [2021-11-05 16:15:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20075 states, 19754 states have (on average 1.3056089905841854) internal successors, (25791), 19786 states have internal predecessors, (25791), 192 states have call successors, (192), 128 states have call predecessors, (192), 128 states have return successors, (192), 192 states have call predecessors, (192), 192 states have call successors, (192) [2021-11-05 16:15:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20075 states to 20075 states and 26175 transitions. [2021-11-05 16:15:33,612 INFO L78 Accepts]: Start accepts. Automaton has 20075 states and 26175 transitions. Word has length 269 [2021-11-05 16:15:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:15:33,613 INFO L470 AbstractCegarLoop]: Abstraction has 20075 states and 26175 transitions. [2021-11-05 16:15:33,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 20075 states and 26175 transitions. [2021-11-05 16:15:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-05 16:15:33,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 16:15:33,626 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 7, 7, 7, 5, 5, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 16:15:33,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 16:15:33,626 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)] === [2021-11-05 16:15:33,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 16:15:33,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1480091276, now seen corresponding path program 1 times [2021-11-05 16:15:33,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 16:15:33,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681440577] [2021-11-05 16:15:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 16:15:33,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 16:15:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 16:15:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 4152 trivial. 0 not checked. [2021-11-05 16:15:34,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 16:15:34,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681440577] [2021-11-05 16:15:34,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681440577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 16:15:34,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 16:15:34,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 16:15:34,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926484937] [2021-11-05 16:15:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 16:15:34,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 16:15:34,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 16:15:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 16:15:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-05 16:15:34,212 INFO L87 Difference]: Start difference. First operand 20075 states and 26175 transitions. Second operand has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 11 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:56,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 16:15:56,443 INFO L93 Difference]: Finished difference Result 110902 states and 144516 transitions. [2021-11-05 16:15:56,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-05 16:15:56,444 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 11 states have internal predecessors, (144), 0 states have call successors, (0), 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 300 [2021-11-05 16:15:56,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 16:15:56,446 INFO L225 Difference]: With dead ends: 110902 [2021-11-05 16:15:56,446 INFO L226 Difference]: Without dead ends: 0 [2021-11-05 16:15:56,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2683 ImplicationChecksByTransitivity, 2042.61ms TimeCoverageRelationStatistics Valid=1485, Invalid=5997, Unknown=0, NotChecked=0, Total=7482 [2021-11-05 16:15:56,511 INFO L933 BasicCegarLoop]: 3271 mSDtfsCounter, 7348 mSDsluCounter, 14250 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2726.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7348 SdHoareTripleChecker+Valid, 17521 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.47ms SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2967.84ms IncrementalHoareTripleChecker+Time [2021-11-05 16:15:56,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7348 Valid, 17521 Invalid, 1305 Unknown, 0 Unchecked, 27.47ms Time], IncrementalHoareTripleChecker [146 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 2967.84ms Time] [2021-11-05 16:15:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-05 16:15:56,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-05 16:15:56,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-05 16:15:56,513 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 300 [2021-11-05 16:15:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 16:15:56,513 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-05 16:15:56,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.090909090909092) internal successors, (144), 11 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 16:15:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-05 16:15:56,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-05 16:15:56,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-05 16:15:56,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-05 16:15:56,516 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-11-05 16:15:56,517 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-11-05 16:15:56,517 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-11-05 16:15:56,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 16:15:56,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Killed by 15