./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 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--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-5b36d44 [2021-11-07 12:48:50,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:48:50,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:48:50,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:48:50,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:48:50,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:48:50,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:48:50,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:48:50,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:48:50,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:48:50,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:48:50,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:48:50,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:48:50,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:48:50,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:48:50,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:48:50,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:48:50,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:48:50,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:48:50,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:48:50,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:48:50,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:48:50,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:48:50,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:48:50,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:48:50,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:48:50,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:48:50,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:48:50,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:48:50,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:48:50,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:48:50,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:48:50,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:48:50,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:48:50,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:48:50,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:48:50,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:48:50,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:48:50,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:48:50,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:48:50,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:48:50,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:48:50,199 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:48:50,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:48:50,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:48:50,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:48:50,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:48:50,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:48:50,204 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:48:50,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:48:50,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:48:50,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:48:50,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:48:50,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:48:50,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:48:50,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:48:50,205 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:48:50,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:48:50,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:48:50,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:48:50,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:48:50,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:48:50,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:48:50,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:48:50,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:48:50,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:48:50,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:48:50,207 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:48:50,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:48:50,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:48:50,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:48:50,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 781669661afd0476205c0d0f127c7931dffbaabf4aae46244e576c29ee5a8115 [2021-11-07 12:48:50,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:48:50,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:48:50,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:48:50,410 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:48:50,411 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:48:50,412 INFO L432 ainManager$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 [2021-11-07 12:48:50,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c204a6c9/eefddd1a92034b579729e5b5033723d1/FLAG9608536dc [2021-11-07 12:48:51,093 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:48:51,093 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 [2021-11-07 12:48:51,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c204a6c9/eefddd1a92034b579729e5b5033723d1/FLAG9608536dc [2021-11-07 12:48:51,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c204a6c9/eefddd1a92034b579729e5b5033723d1 [2021-11-07 12:48:51,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:48:51,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:48:51,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:48:51,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:48:51,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:48:51,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:48:51" (1/1) ... [2021-11-07 12:48:51,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c054eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:51, skipping insertion in model container [2021-11-07 12:48:51,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:48:51" (1/1) ... [2021-11-07 12:48:51,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:48:51,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:48:51,930 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] [2021-11-07 12:48:52,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:48:52,315 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:48:52,407 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] [2021-11-07 12:48:52,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:48:52,594 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:48:52,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52 WrapperNode [2021-11-07 12:48:52,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:48:52,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:48:52,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:48:52,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:48:52,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52" (1/1) ... [2021-11-07 12:48:52,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52" (1/1) ... [2021-11-07 12:48:52,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:48:52,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:48:52,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:48:52,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:48:52,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52" (1/1) ... [2021-11-07 12:48:52,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52" (1/1) ... [2021-11-07 12:48:52,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52" (1/1) ... [2021-11-07 12:48:52,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52" (1/1) ... [2021-11-07 12:48:52,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52" (1/1) ... [2021-11-07 12:48:52,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52" (1/1) ... [2021-11-07 12:48:52,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52" (1/1) ... [2021-11-07 12:48:52,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:48:52,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:48:52,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:48:52,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:48:52,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52" (1/1) ... [2021-11-07 12:48:52,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:48:52,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:48:52,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 12:48:52,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 12:48:53,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2021-11-07 12:48:53,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2021-11-07 12:48:53,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:48:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-07 12:48:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-07 12:48:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:48:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:48:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:48:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:48:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:48:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:48:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:48:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:48:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:48:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure esd_usb2_read_bulk_callback [2021-11-07 12:48:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure esd_usb2_read_bulk_callback [2021-11-07 12:48:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:48:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:48:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:48:55,351 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:48:55,351 INFO L299 CfgBuilder]: Removed 577 assume(true) statements. [2021-11-07 12:48:55,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:48:55 BoogieIcfgContainer [2021-11-07 12:48:55,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:48:55,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:48:55,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:48:55,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:48:55,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:48:51" (1/3) ... [2021-11-07 12:48:55,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270389db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:48:55, skipping insertion in model container [2021-11-07 12:48:55,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:48:52" (2/3) ... [2021-11-07 12:48:55,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270389db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:48:55, skipping insertion in model container [2021-11-07 12:48:55,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:48:55" (3/3) ... [2021-11-07 12:48:55,361 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 [2021-11-07 12:48:55,365 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:48:55,365 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 12:48:55,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:48:55,407 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 12:48:55,408 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 12:48:55,428 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) [2021-11-07 12:48:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 12:48:55,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:55,434 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] [2021-11-07 12:48:55,435 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:48:55,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash -443169162, now seen corresponding path program 1 times [2021-11-07 12:48:55,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:55,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069107694] [2021-11-07 12:48:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:55,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:48:55,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:55,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069107694] [2021-11-07 12:48:55,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069107694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:55,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:55,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:48:55,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870088256] [2021-11-07 12:48:55,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:55,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:48:55,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:55,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:48:55,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:55,961 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) [2021-11-07 12:48:56,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:56,714 INFO L93 Difference]: Finished difference Result 1694 states and 2383 transitions. [2021-11-07 12:48:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:48:56,716 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 [2021-11-07 12:48:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:56,731 INFO L225 Difference]: With dead ends: 1694 [2021-11-07 12:48:56,732 INFO L226 Difference]: Without dead ends: 1079 [2021-11-07 12:48:56,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:56,740 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 697 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 621.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.42ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 654.12ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:56,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 1590 Invalid, 15 Unknown, 0 Unchecked, 9.42ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 654.12ms Time] [2021-11-07 12:48:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-11-07 12:48:56,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1079. [2021-11-07 12:48:56,809 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) [2021-11-07 12:48:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1457 transitions. [2021-11-07 12:48:56,815 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1457 transitions. Word has length 36 [2021-11-07 12:48:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:56,815 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 1457 transitions. [2021-11-07 12:48:56,815 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) [2021-11-07 12:48:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1457 transitions. [2021-11-07 12:48:56,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 12:48:56,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:56,817 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] [2021-11-07 12:48:56,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:48:56,818 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:48:56,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash 71303661, now seen corresponding path program 1 times [2021-11-07 12:48:56,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:56,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493086213] [2021-11-07 12:48:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:56,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:48:56,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:56,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493086213] [2021-11-07 12:48:56,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493086213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:56,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:56,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:48:56,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369030577] [2021-11-07 12:48:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:56,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:48:56,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:56,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:48:56,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:56,992 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) [2021-11-07 12:48:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:57,081 INFO L93 Difference]: Finished difference Result 3119 states and 4232 transitions. [2021-11-07 12:48:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:48:57,081 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 [2021-11-07 12:48:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:57,089 INFO L225 Difference]: With dead ends: 3119 [2021-11-07 12:48:57,089 INFO L226 Difference]: Without dead ends: 2098 [2021-11-07 12:48:57,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:57,092 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 734 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.42ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.34ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:57,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 1468 Invalid, 37 Unknown, 0 Unchecked, 3.42ms Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 40.34ms Time] [2021-11-07 12:48:57,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2021-11-07 12:48:57,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 2086. [2021-11-07 12:48:57,139 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) [2021-11-07 12:48:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2826 transitions. [2021-11-07 12:48:57,146 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2826 transitions. Word has length 43 [2021-11-07 12:48:57,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:57,149 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 2826 transitions. [2021-11-07 12:48:57,150 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) [2021-11-07 12:48:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2826 transitions. [2021-11-07 12:48:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 12:48:57,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:57,157 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] [2021-11-07 12:48:57,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:48:57,157 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)] === [2021-11-07 12:48:57,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:57,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2084553551, now seen corresponding path program 1 times [2021-11-07 12:48:57,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:57,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321697462] [2021-11-07 12:48:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:57,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:48:57,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:57,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321697462] [2021-11-07 12:48:57,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321697462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:57,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:57,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:48:57,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957494432] [2021-11-07 12:48:57,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:57,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:48:57,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:57,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:48:57,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:57,326 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) [2021-11-07 12:48:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:57,403 INFO L93 Difference]: Finished difference Result 2086 states and 2826 transitions. [2021-11-07 12:48:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:48:57,404 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 [2021-11-07 12:48:57,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:57,410 INFO L225 Difference]: With dead ends: 2086 [2021-11-07 12:48:57,411 INFO L226 Difference]: Without dead ends: 2084 [2021-11-07 12:48:57,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.90ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:57,416 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 738 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.26ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:57,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 779 Invalid, 1 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.26ms Time] [2021-11-07 12:48:57,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-11-07 12:48:57,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2084. [2021-11-07 12:48:57,473 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) [2021-11-07 12:48:57,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2824 transitions. [2021-11-07 12:48:57,481 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2824 transitions. Word has length 44 [2021-11-07 12:48:57,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:57,482 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 2824 transitions. [2021-11-07 12:48:57,482 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) [2021-11-07 12:48:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2824 transitions. [2021-11-07 12:48:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 12:48:57,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:57,483 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] [2021-11-07 12:48:57,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:48:57,484 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)] === [2021-11-07 12:48:57,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:57,485 INFO L85 PathProgramCache]: Analyzing trace with hash -196650377, now seen corresponding path program 1 times [2021-11-07 12:48:57,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:57,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941224886] [2021-11-07 12:48:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:57,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:48:57,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:57,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941224886] [2021-11-07 12:48:57,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941224886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:57,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:57,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:48:57,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032042141] [2021-11-07 12:48:57,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:57,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:48:57,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:57,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:48:57,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:57,619 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) [2021-11-07 12:48:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:57,669 INFO L93 Difference]: Finished difference Result 2084 states and 2824 transitions. [2021-11-07 12:48:57,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:48:57,670 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 [2021-11-07 12:48:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:57,677 INFO L225 Difference]: With dead ends: 2084 [2021-11-07 12:48:57,678 INFO L226 Difference]: Without dead ends: 2082 [2021-11-07 12:48:57,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:57,684 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 735 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.89ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:57,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 777 Invalid, 1 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.89ms Time] [2021-11-07 12:48:57,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-11-07 12:48:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2082. [2021-11-07 12:48:57,784 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) [2021-11-07 12:48:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2822 transitions. [2021-11-07 12:48:57,791 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2822 transitions. Word has length 45 [2021-11-07 12:48:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:57,791 INFO L470 AbstractCegarLoop]: Abstraction has 2082 states and 2822 transitions. [2021-11-07 12:48:57,791 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) [2021-11-07 12:48:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2822 transitions. [2021-11-07 12:48:57,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 12:48:57,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:57,793 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] [2021-11-07 12:48:57,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:48:57,793 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)] === [2021-11-07 12:48:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:57,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1801194117, now seen corresponding path program 1 times [2021-11-07 12:48:57,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:57,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265333236] [2021-11-07 12:48:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:57,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:48:57,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:57,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265333236] [2021-11-07 12:48:57,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265333236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:57,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:57,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:48:57,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088379313] [2021-11-07 12:48:57,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:57,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:48:57,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:57,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:48:57,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:57,875 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) [2021-11-07 12:48:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:57,932 INFO L93 Difference]: Finished difference Result 2082 states and 2822 transitions. [2021-11-07 12:48:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:48:57,933 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 [2021-11-07 12:48:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:57,939 INFO L225 Difference]: With dead ends: 2082 [2021-11-07 12:48:57,940 INFO L226 Difference]: Without dead ends: 2080 [2021-11-07 12:48:57,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.54ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:57,941 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 732 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.07ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:57,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 775 Invalid, 1 Unknown, 0 Unchecked, 1.89ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.07ms Time] [2021-11-07 12:48:57,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-11-07 12:48:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2080. [2021-11-07 12:48:58,003 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) [2021-11-07 12:48:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2820 transitions. [2021-11-07 12:48:58,009 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2820 transitions. Word has length 46 [2021-11-07 12:48:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:58,010 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 2820 transitions. [2021-11-07 12:48:58,010 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) [2021-11-07 12:48:58,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2820 transitions. [2021-11-07 12:48:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 12:48:58,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:58,011 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] [2021-11-07 12:48:58,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:48:58,011 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)] === [2021-11-07 12:48:58,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2442495, now seen corresponding path program 1 times [2021-11-07 12:48:58,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:58,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666046431] [2021-11-07 12:48:58,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:58,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:48:58,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:58,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666046431] [2021-11-07 12:48:58,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666046431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:58,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:58,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:48:58,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007091904] [2021-11-07 12:48:58,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:58,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:48:58,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:58,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:48:58,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:58,090 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) [2021-11-07 12:48:58,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:58,156 INFO L93 Difference]: Finished difference Result 2080 states and 2820 transitions. [2021-11-07 12:48:58,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:48:58,157 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 [2021-11-07 12:48:58,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:58,163 INFO L225 Difference]: With dead ends: 2080 [2021-11-07 12:48:58,163 INFO L226 Difference]: Without dead ends: 2071 [2021-11-07 12:48:58,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:58,164 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, 1.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:58,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 12:48:58,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2021-11-07 12:48:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 2071. [2021-11-07 12:48:58,215 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) [2021-11-07 12:48:58,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2808 transitions. [2021-11-07 12:48:58,220 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2808 transitions. Word has length 47 [2021-11-07 12:48:58,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:58,221 INFO L470 AbstractCegarLoop]: Abstraction has 2071 states and 2808 transitions. [2021-11-07 12:48:58,221 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) [2021-11-07 12:48:58,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2808 transitions. [2021-11-07 12:48:58,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 12:48:58,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:58,223 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] [2021-11-07 12:48:58,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:48:58,223 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)] === [2021-11-07 12:48:58,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:58,224 INFO L85 PathProgramCache]: Analyzing trace with hash -529667920, now seen corresponding path program 1 times [2021-11-07 12:48:58,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:58,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167862633] [2021-11-07 12:48:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:58,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:48:58,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:58,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167862633] [2021-11-07 12:48:58,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167862633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:58,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:58,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:48:58,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790022470] [2021-11-07 12:48:58,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:58,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:48:58,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:48:58,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:58,313 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) [2021-11-07 12:48:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:58,416 INFO L93 Difference]: Finished difference Result 4707 states and 6367 transitions. [2021-11-07 12:48:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:48:58,417 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 [2021-11-07 12:48:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:58,425 INFO L225 Difference]: With dead ends: 4707 [2021-11-07 12:48:58,425 INFO L226 Difference]: Without dead ends: 2694 [2021-11-07 12:48:58,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:58,429 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 276 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.15ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.96ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:58,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 1460 Invalid, 20 Unknown, 0 Unchecked, 2.15ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 30.96ms Time] [2021-11-07 12:48:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-11-07 12:48:58,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2689. [2021-11-07 12:48:58,500 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) [2021-11-07 12:48:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 3620 transitions. [2021-11-07 12:48:58,507 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 3620 transitions. Word has length 72 [2021-11-07 12:48:58,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:58,508 INFO L470 AbstractCegarLoop]: Abstraction has 2689 states and 3620 transitions. [2021-11-07 12:48:58,508 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) [2021-11-07 12:48:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 3620 transitions. [2021-11-07 12:48:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 12:48:58,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:58,510 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] [2021-11-07 12:48:58,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:48:58,510 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:48:58,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:58,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2065425063, now seen corresponding path program 1 times [2021-11-07 12:48:58,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:58,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008196403] [2021-11-07 12:48:58,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:58,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:48:58,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:58,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008196403] [2021-11-07 12:48:58,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008196403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:48:58,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:48:58,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:48:58,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40020383] [2021-11-07 12:48:58,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:48:58,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:48:58,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:48:58,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:48:58,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:58,638 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) [2021-11-07 12:48:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:48:59,507 INFO L93 Difference]: Finished difference Result 5991 states and 8079 transitions. [2021-11-07 12:48:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:48:59,507 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 [2021-11-07 12:48:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:48:59,517 INFO L225 Difference]: With dead ends: 5991 [2021-11-07 12:48:59,518 INFO L226 Difference]: Without dead ends: 3360 [2021-11-07 12:48:59,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:48:59,523 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 227 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 752.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 789.27ms IncrementalHoareTripleChecker+Time [2021-11-07 12:48:59,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 1718 Invalid, 30 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 789.27ms Time] [2021-11-07 12:48:59,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2021-11-07 12:48:59,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3355. [2021-11-07 12:48:59,602 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) [2021-11-07 12:48:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 4500 transitions. [2021-11-07 12:48:59,610 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 4500 transitions. Word has length 84 [2021-11-07 12:48:59,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:48:59,611 INFO L470 AbstractCegarLoop]: Abstraction has 3355 states and 4500 transitions. [2021-11-07 12:48:59,611 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) [2021-11-07 12:48:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 4500 transitions. [2021-11-07 12:48:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-07 12:48:59,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:48:59,615 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] [2021-11-07 12:48:59,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:48:59,616 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:48:59,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:48:59,616 INFO L85 PathProgramCache]: Analyzing trace with hash -884858301, now seen corresponding path program 1 times [2021-11-07 12:48:59,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:48:59,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668506762] [2021-11-07 12:48:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:59,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:48:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:48:59,715 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 12:48:59,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:48:59,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668506762] [2021-11-07 12:48:59,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668506762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:48:59,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709874970] [2021-11-07 12:48:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:48:59,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:48:59,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:48:59,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:48:59,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 12:49:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:00,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 12:49:00,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 12:49:00,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:49:00,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709874970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:00,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:49:00,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 12:49:00,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207796241] [2021-11-07 12:49:00,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:00,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:49:00,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:00,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:49:00,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:49:00,397 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) [2021-11-07 12:49:00,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:00,566 INFO L93 Difference]: Finished difference Result 7959 states and 10723 transitions. [2021-11-07 12:49:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:49:00,566 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 [2021-11-07 12:49:00,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:00,586 INFO L225 Difference]: With dead ends: 7959 [2021-11-07 12:49:00,587 INFO L226 Difference]: Without dead ends: 4662 [2021-11-07 12:49:00,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.58ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:49:00,596 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 612 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.42ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.87ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:00,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1356 Invalid, 31 Unknown, 0 Unchecked, 2.42ms Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 47.87ms Time] [2021-11-07 12:49:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2021-11-07 12:49:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 4657. [2021-11-07 12:49:00,783 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) [2021-11-07 12:49:00,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4657 states to 4657 states and 6280 transitions. [2021-11-07 12:49:00,794 INFO L78 Accepts]: Start accepts. Automaton has 4657 states and 6280 transitions. Word has length 98 [2021-11-07 12:49:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:00,795 INFO L470 AbstractCegarLoop]: Abstraction has 4657 states and 6280 transitions. [2021-11-07 12:49:00,795 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) [2021-11-07 12:49:00,795 INFO L276 IsEmpty]: Start isEmpty. Operand 4657 states and 6280 transitions. [2021-11-07 12:49:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 12:49:00,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:00,799 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] [2021-11-07 12:49:00,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 12:49:01,021 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 [2021-11-07 12:49:01,021 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:01,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:01,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1363892421, now seen corresponding path program 1 times [2021-11-07 12:49:01,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:01,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436224696] [2021-11-07 12:49:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:01,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 12:49:01,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:01,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436224696] [2021-11-07 12:49:01,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436224696] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:49:01,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255918412] [2021-11-07 12:49:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:01,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:49:01,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:49:01,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:49:01,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 12:49:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:01,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1753 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:49:01,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:01,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:49:01,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255918412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:01,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:49:01,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-07 12:49:01,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932177099] [2021-11-07 12:49:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:01,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:49:01,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:49:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:49:01,950 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) [2021-11-07 12:49:02,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:02,791 INFO L93 Difference]: Finished difference Result 13856 states and 18702 transitions. [2021-11-07 12:49:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:49:02,792 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 [2021-11-07 12:49:02,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:02,854 INFO L225 Difference]: With dead ends: 13856 [2021-11-07 12:49:02,854 INFO L226 Difference]: Without dead ends: 13851 [2021-11-07 12:49:02,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.13ms TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:49:02,862 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 1414 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 448.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 2911 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.57ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 505.52ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:02,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 2911 Invalid, 46 Unknown, 0 Unchecked, 4.57ms Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 505.52ms Time] [2021-11-07 12:49:02,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13851 states. [2021-11-07 12:49:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13851 to 13473. [2021-11-07 12:49:03,294 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) [2021-11-07 12:49:03,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13473 states to 13473 states and 18222 transitions. [2021-11-07 12:49:03,333 INFO L78 Accepts]: Start accepts. Automaton has 13473 states and 18222 transitions. Word has length 113 [2021-11-07 12:49:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:03,333 INFO L470 AbstractCegarLoop]: Abstraction has 13473 states and 18222 transitions. [2021-11-07 12:49:03,334 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) [2021-11-07 12:49:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 13473 states and 18222 transitions. [2021-11-07 12:49:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 12:49:03,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:03,343 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] [2021-11-07 12:49:03,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 12:49:03,567 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 [2021-11-07 12:49:03,567 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:03,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1424796040, now seen corresponding path program 1 times [2021-11-07 12:49:03,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:03,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765797177] [2021-11-07 12:49:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:03,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 12:49:03,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:03,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765797177] [2021-11-07 12:49:03,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765797177] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:49:03,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529382196] [2021-11-07 12:49:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:03,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:49:03,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:49:03,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:49:03,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 12:49:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:04,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 12:49:04,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 12:49:04,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:49:04,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529382196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:04,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:49:04,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-07 12:49:04,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584961272] [2021-11-07 12:49:04,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:04,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:49:04,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:04,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:49:04,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:49:04,318 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) [2021-11-07 12:49:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:04,993 INFO L93 Difference]: Finished difference Result 20508 states and 27760 transitions. [2021-11-07 12:49:04,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:49:04,994 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 [2021-11-07 12:49:04,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:05,015 INFO L225 Difference]: With dead ends: 20508 [2021-11-07 12:49:05,015 INFO L226 Difference]: Without dead ends: 6669 [2021-11-07 12:49:05,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.11ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:49:05,038 INFO L933 BasicCegarLoop]: 959 mSDtfsCounter, 634 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 367.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.60ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 401.61ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:05,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 1232 Invalid, 11 Unknown, 0 Unchecked, 2.60ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 401.61ms Time] [2021-11-07 12:49:05,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6669 states. [2021-11-07 12:49:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6669 to 6669. [2021-11-07 12:49:05,270 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) [2021-11-07 12:49:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 8997 transitions. [2021-11-07 12:49:05,285 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 8997 transitions. Word has length 120 [2021-11-07 12:49:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:05,285 INFO L470 AbstractCegarLoop]: Abstraction has 6669 states and 8997 transitions. [2021-11-07 12:49:05,286 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) [2021-11-07 12:49:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 8997 transitions. [2021-11-07 12:49:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 12:49:05,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:05,296 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] [2021-11-07 12:49:05,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 12:49:05,519 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 [2021-11-07 12:49:05,520 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:05,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:05,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2032991633, now seen corresponding path program 1 times [2021-11-07 12:49:05,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:05,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253018111] [2021-11-07 12:49:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:05,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-07 12:49:05,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:05,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253018111] [2021-11-07 12:49:05,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253018111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:05,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:49:05,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:49:05,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623397674] [2021-11-07 12:49:05,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:05,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:49:05,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:49:05,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:49:05,597 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) [2021-11-07 12:49:05,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:05,912 INFO L93 Difference]: Finished difference Result 17452 states and 23782 transitions. [2021-11-07 12:49:05,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:49:05,912 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 [2021-11-07 12:49:05,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:05,939 INFO L225 Difference]: With dead ends: 17452 [2021-11-07 12:49:05,940 INFO L226 Difference]: Without dead ends: 10799 [2021-11-07 12:49:05,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:49:05,955 INFO L933 BasicCegarLoop]: 1248 mSDtfsCounter, 606 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.93ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.33ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:05,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1934 Invalid, 12 Unknown, 0 Unchecked, 3.93ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 40.33ms Time] [2021-11-07 12:49:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10799 states. [2021-11-07 12:49:06,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10799 to 10694. [2021-11-07 12:49:06,373 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) [2021-11-07 12:49:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10694 states to 10694 states and 14622 transitions. [2021-11-07 12:49:06,394 INFO L78 Accepts]: Start accepts. Automaton has 10694 states and 14622 transitions. Word has length 127 [2021-11-07 12:49:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:06,394 INFO L470 AbstractCegarLoop]: Abstraction has 10694 states and 14622 transitions. [2021-11-07 12:49:06,394 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) [2021-11-07 12:49:06,395 INFO L276 IsEmpty]: Start isEmpty. Operand 10694 states and 14622 transitions. [2021-11-07 12:49:06,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 12:49:06,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:06,405 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] [2021-11-07 12:49:06,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 12:49:06,406 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:06,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:06,406 INFO L85 PathProgramCache]: Analyzing trace with hash -21511289, now seen corresponding path program 2 times [2021-11-07 12:49:06,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:06,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487395946] [2021-11-07 12:49:06,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:06,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 12:49:06,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:06,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487395946] [2021-11-07 12:49:06,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487395946] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:49:06,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917160004] [2021-11-07 12:49:06,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 12:49:06,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:49:06,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:49:06,487 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:49:06,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 12:49:07,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 12:49:07,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 12:49:07,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1892 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 12:49:07,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 12:49:07,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:49:07,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917160004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:07,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:49:07,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 12:49:07,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635354304] [2021-11-07 12:49:07,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:07,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:49:07,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:07,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:49:07,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:49:07,631 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) [2021-11-07 12:49:08,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:08,008 INFO L93 Difference]: Finished difference Result 24076 states and 33075 transitions. [2021-11-07 12:49:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:49:08,012 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 [2021-11-07 12:49:08,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:08,050 INFO L225 Difference]: With dead ends: 24076 [2021-11-07 12:49:08,050 INFO L226 Difference]: Without dead ends: 13440 [2021-11-07 12:49:08,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.28ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:49:08,068 INFO L933 BasicCegarLoop]: 770 mSDtfsCounter, 717 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.64ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:08,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 1342 Invalid, 17 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 30.64ms Time] [2021-11-07 12:49:08,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13440 states. [2021-11-07 12:49:08,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13440 to 13112. [2021-11-07 12:49:08,411 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) [2021-11-07 12:49:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13112 states to 13112 states and 18067 transitions. [2021-11-07 12:49:08,444 INFO L78 Accepts]: Start accepts. Automaton has 13112 states and 18067 transitions. Word has length 127 [2021-11-07 12:49:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:08,444 INFO L470 AbstractCegarLoop]: Abstraction has 13112 states and 18067 transitions. [2021-11-07 12:49:08,445 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) [2021-11-07 12:49:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 13112 states and 18067 transitions. [2021-11-07 12:49:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 12:49:08,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:08,454 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] [2021-11-07 12:49:08,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 12:49:08,667 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 [2021-11-07 12:49:08,667 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:08,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:08,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1867967264, now seen corresponding path program 1 times [2021-11-07 12:49:08,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:08,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904915538] [2021-11-07 12:49:08,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:08,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 52 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 12:49:08,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:08,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904915538] [2021-11-07 12:49:08,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904915538] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:49:08,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218760167] [2021-11-07 12:49:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:08,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:49:08,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:49:08,886 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:49:08,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 12:49:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:09,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 12:49:09,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 12:49:09,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:49:09,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218760167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:09,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:49:09,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-07 12:49:09,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829497089] [2021-11-07 12:49:09,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:09,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:49:09,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:49:09,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:49:09,504 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) [2021-11-07 12:49:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:10,034 INFO L93 Difference]: Finished difference Result 25916 states and 35727 transitions. [2021-11-07 12:49:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:49:10,035 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 [2021-11-07 12:49:10,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:10,074 INFO L225 Difference]: With dead ends: 25916 [2021-11-07 12:49:10,075 INFO L226 Difference]: Without dead ends: 13117 [2021-11-07 12:49:10,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.34ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:49:10,101 INFO L933 BasicCegarLoop]: 1198 mSDtfsCounter, 566 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.34ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 261.35ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:10,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 1808 Invalid, 28 Unknown, 0 Unchecked, 4.34ms Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 261.35ms Time] [2021-11-07 12:49:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13117 states. [2021-11-07 12:49:10,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13117 to 13112. [2021-11-07 12:49:10,657 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) [2021-11-07 12:49:10,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13112 states to 13112 states and 18012 transitions. [2021-11-07 12:49:10,686 INFO L78 Accepts]: Start accepts. Automaton has 13112 states and 18012 transitions. Word has length 127 [2021-11-07 12:49:10,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:10,687 INFO L470 AbstractCegarLoop]: Abstraction has 13112 states and 18012 transitions. [2021-11-07 12:49:10,687 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) [2021-11-07 12:49:10,687 INFO L276 IsEmpty]: Start isEmpty. Operand 13112 states and 18012 transitions. [2021-11-07 12:49:10,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 12:49:10,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:10,696 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] [2021-11-07 12:49:10,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 12:49:10,924 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 [2021-11-07 12:49:10,925 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1372127101, now seen corresponding path program 1 times [2021-11-07 12:49:10,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:10,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690872492] [2021-11-07 12:49:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:10,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:11,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:11,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690872492] [2021-11-07 12:49:11,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690872492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:11,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:49:11,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:49:11,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459339234] [2021-11-07 12:49:11,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:11,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:49:11,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:49:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:49:11,031 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) [2021-11-07 12:49:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:11,444 INFO L93 Difference]: Finished difference Result 25943 states and 35661 transitions. [2021-11-07 12:49:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:49:11,445 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 [2021-11-07 12:49:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:11,475 INFO L225 Difference]: With dead ends: 25943 [2021-11-07 12:49:11,475 INFO L226 Difference]: Without dead ends: 13144 [2021-11-07 12:49:11,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.41ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:49:11,494 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 1 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.52ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:11,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1529 Invalid, 6 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 9.52ms Time] [2021-11-07 12:49:11,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13144 states. [2021-11-07 12:49:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13144 to 13128. [2021-11-07 12:49:11,777 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) [2021-11-07 12:49:11,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13128 states to 13128 states and 18028 transitions. [2021-11-07 12:49:11,802 INFO L78 Accepts]: Start accepts. Automaton has 13128 states and 18028 transitions. Word has length 130 [2021-11-07 12:49:11,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:11,803 INFO L470 AbstractCegarLoop]: Abstraction has 13128 states and 18028 transitions. [2021-11-07 12:49:11,803 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) [2021-11-07 12:49:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand 13128 states and 18028 transitions. [2021-11-07 12:49:11,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 12:49:11,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:11,812 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] [2021-11-07 12:49:11,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 12:49:11,813 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:11,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1086317855, now seen corresponding path program 1 times [2021-11-07 12:49:11,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:11,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536232611] [2021-11-07 12:49:11,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:11,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:11,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:11,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:11,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536232611] [2021-11-07 12:49:11,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536232611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:49:11,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560710689] [2021-11-07 12:49:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:11,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:49:11,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:49:11,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:49:11,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 12:49:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:12,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:49:12,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:12,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:49:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:12,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560710689] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 12:49:12,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 12:49:12,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 12:49:12,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831996236] [2021-11-07 12:49:12,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 12:49:12,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:49:12,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:12,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:49:12,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:49:12,776 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) [2021-11-07 12:49:13,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:13,094 INFO L93 Difference]: Finished difference Result 26039 states and 35789 transitions. [2021-11-07 12:49:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 12:49:13,095 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 [2021-11-07 12:49:13,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:13,125 INFO L225 Difference]: With dead ends: 26039 [2021-11-07 12:49:13,125 INFO L226 Difference]: Without dead ends: 13224 [2021-11-07 12:49:13,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.60ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:49:13,144 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 4 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.50ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.21ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:13,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3055 Invalid, 21 Unknown, 0 Unchecked, 2.50ms Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 15.21ms Time] [2021-11-07 12:49:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13224 states. [2021-11-07 12:49:13,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13224 to 13224. [2021-11-07 12:49:13,502 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) [2021-11-07 12:49:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13224 states to 13224 states and 18124 transitions. [2021-11-07 12:49:13,528 INFO L78 Accepts]: Start accepts. Automaton has 13224 states and 18124 transitions. Word has length 132 [2021-11-07 12:49:13,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:13,528 INFO L470 AbstractCegarLoop]: Abstraction has 13224 states and 18124 transitions. [2021-11-07 12:49:13,528 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) [2021-11-07 12:49:13,528 INFO L276 IsEmpty]: Start isEmpty. Operand 13224 states and 18124 transitions. [2021-11-07 12:49:13,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 12:49:13,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:13,537 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] [2021-11-07 12:49:13,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-07 12:49:13,751 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 [2021-11-07 12:49:13,752 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:13,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:13,752 INFO L85 PathProgramCache]: Analyzing trace with hash -834057997, now seen corresponding path program 2 times [2021-11-07 12:49:13,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:13,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554353808] [2021-11-07 12:49:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:13,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-07 12:49:13,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:13,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554353808] [2021-11-07 12:49:13,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554353808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:13,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:49:13,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:49:13,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14784721] [2021-11-07 12:49:13,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:13,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:49:13,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:13,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:49:13,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:49:13,842 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) [2021-11-07 12:49:14,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:14,912 INFO L93 Difference]: Finished difference Result 61410 states and 83858 transitions. [2021-11-07 12:49:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:49:14,913 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 [2021-11-07 12:49:14,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:15,018 INFO L225 Difference]: With dead ends: 61410 [2021-11-07 12:49:15,019 INFO L226 Difference]: Without dead ends: 48499 [2021-11-07 12:49:15,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 20.20ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:49:15,056 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 2823 mSDsluCounter, 3727 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2825 SdHoareTripleChecker+Valid, 5272 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.10ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.04ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:15,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2825 Valid, 5272 Invalid, 79 Unknown, 0 Unchecked, 7.10ms Time], IncrementalHoareTripleChecker [23 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 54.04ms Time] [2021-11-07 12:49:15,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48499 states. [2021-11-07 12:49:15,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48499 to 13336. [2021-11-07 12:49:15,899 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) [2021-11-07 12:49:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 18292 transitions. [2021-11-07 12:49:15,930 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 18292 transitions. Word has length 138 [2021-11-07 12:49:15,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:15,931 INFO L470 AbstractCegarLoop]: Abstraction has 13336 states and 18292 transitions. [2021-11-07 12:49:15,931 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) [2021-11-07 12:49:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 18292 transitions. [2021-11-07 12:49:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-07 12:49:15,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:15,942 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] [2021-11-07 12:49:15,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 12:49:15,942 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:15,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:15,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2052549296, now seen corresponding path program 1 times [2021-11-07 12:49:15,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:15,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657203257] [2021-11-07 12:49:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:15,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:16,075 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:16,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:16,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657203257] [2021-11-07 12:49:16,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657203257] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:49:16,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415014875] [2021-11-07 12:49:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:16,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:49:16,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:49:16,078 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) [2021-11-07 12:49:16,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 12:49:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:16,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 12:49:16,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:16,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:49:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:16,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415014875] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 12:49:16,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 12:49:16,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-07 12:49:16,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481117303] [2021-11-07 12:49:16,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 12:49:16,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 12:49:16,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:16,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 12:49:16,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 12:49:16,994 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) [2021-11-07 12:49:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:17,544 INFO L93 Difference]: Finished difference Result 26551 states and 36461 transitions. [2021-11-07 12:49:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 12:49:17,545 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 [2021-11-07 12:49:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:17,577 INFO L225 Difference]: With dead ends: 26551 [2021-11-07 12:49:17,577 INFO L226 Difference]: Without dead ends: 13528 [2021-11-07 12:49:17,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 50.18ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 12:49:17,600 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 10 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.41ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:17,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2292 Invalid, 35 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 27.41ms Time] [2021-11-07 12:49:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13528 states. [2021-11-07 12:49:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13528 to 13528. [2021-11-07 12:49:18,217 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) [2021-11-07 12:49:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13528 states to 13528 states and 18484 transitions. [2021-11-07 12:49:18,238 INFO L78 Accepts]: Start accepts. Automaton has 13528 states and 18484 transitions. Word has length 138 [2021-11-07 12:49:18,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:18,239 INFO L470 AbstractCegarLoop]: Abstraction has 13528 states and 18484 transitions. [2021-11-07 12:49:18,239 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) [2021-11-07 12:49:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 13528 states and 18484 transitions. [2021-11-07 12:49:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 12:49:18,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:18,247 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] [2021-11-07 12:49:18,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 12:49:18,467 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 [2021-11-07 12:49:18,467 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:18,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash 906502153, now seen corresponding path program 1 times [2021-11-07 12:49:18,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:18,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735612832] [2021-11-07 12:49:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:18,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 65 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 12:49:18,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:18,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735612832] [2021-11-07 12:49:18,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735612832] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:49:18,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267996732] [2021-11-07 12:49:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:18,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:49:18,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:49:18,552 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) [2021-11-07 12:49:18,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 12:49:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:19,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 12:49:19,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 12:49:19,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:49:19,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267996732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:19,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:49:19,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 12:49:19,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149990908] [2021-11-07 12:49:19,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:19,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:49:19,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:19,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:49:19,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:49:19,277 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) [2021-11-07 12:49:20,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:20,325 INFO L93 Difference]: Finished difference Result 37236 states and 50814 transitions. [2021-11-07 12:49:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 12:49:20,325 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 [2021-11-07 12:49:20,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:20,378 INFO L225 Difference]: With dead ends: 37236 [2021-11-07 12:49:20,379 INFO L226 Difference]: Without dead ends: 23766 [2021-11-07 12:49:20,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.79ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 12:49:20,405 INFO L933 BasicCegarLoop]: 1426 mSDtfsCounter, 1369 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 352.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.06ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 384.05ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:20,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 4328 Invalid, 52 Unknown, 0 Unchecked, 4.06ms Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 384.05ms Time] [2021-11-07 12:49:20,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23766 states. [2021-11-07 12:49:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23766 to 13633. [2021-11-07 12:49:20,948 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) [2021-11-07 12:49:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13633 states to 13633 states and 18589 transitions. [2021-11-07 12:49:20,973 INFO L78 Accepts]: Start accepts. Automaton has 13633 states and 18589 transitions. Word has length 142 [2021-11-07 12:49:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:20,974 INFO L470 AbstractCegarLoop]: Abstraction has 13633 states and 18589 transitions. [2021-11-07 12:49:20,974 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) [2021-11-07 12:49:20,974 INFO L276 IsEmpty]: Start isEmpty. Operand 13633 states and 18589 transitions. [2021-11-07 12:49:20,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 12:49:20,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:20,981 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] [2021-11-07 12:49:21,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 12:49:21,196 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 [2021-11-07 12:49:21,196 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash 43122242, now seen corresponding path program 1 times [2021-11-07 12:49:21,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:21,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584412931] [2021-11-07 12:49:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:21,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:21,276 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-07 12:49:21,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:21,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584412931] [2021-11-07 12:49:21,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584412931] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:49:21,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031286683] [2021-11-07 12:49:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:21,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:49:21,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:49:21,279 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) [2021-11-07 12:49:21,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 12:49:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:21,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:49:21,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 12:49:21,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:49:21,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031286683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:21,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:49:21,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-07 12:49:21,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428618389] [2021-11-07 12:49:21,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:21,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:49:21,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:21,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:49:21,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:49:21,952 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) [2021-11-07 12:49:22,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:22,845 INFO L93 Difference]: Finished difference Result 34039 states and 46311 transitions. [2021-11-07 12:49:22,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:49:22,846 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 [2021-11-07 12:49:22,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:22,887 INFO L225 Difference]: With dead ends: 34039 [2021-11-07 12:49:22,888 INFO L226 Difference]: Without dead ends: 20724 [2021-11-07 12:49:22,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.37ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:49:22,914 INFO L933 BasicCegarLoop]: 1121 mSDtfsCounter, 708 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.01ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:22,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 2652 Invalid, 13 Unknown, 0 Unchecked, 3.50ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 13.01ms Time] [2021-11-07 12:49:22,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20724 states. [2021-11-07 12:49:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20724 to 13665. [2021-11-07 12:49:23,500 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) [2021-11-07 12:49:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 18621 transitions. [2021-11-07 12:49:23,532 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 18621 transitions. Word has length 143 [2021-11-07 12:49:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:23,532 INFO L470 AbstractCegarLoop]: Abstraction has 13665 states and 18621 transitions. [2021-11-07 12:49:23,533 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) [2021-11-07 12:49:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 18621 transitions. [2021-11-07 12:49:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 12:49:23,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:23,564 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] [2021-11-07 12:49:23,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 12:49:23,779 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 [2021-11-07 12:49:23,779 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1594910680, now seen corresponding path program 1 times [2021-11-07 12:49:23,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:23,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126355734] [2021-11-07 12:49:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:23,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 12:49:23,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:23,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126355734] [2021-11-07 12:49:23,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126355734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:23,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:49:23,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:49:23,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407272782] [2021-11-07 12:49:23,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:23,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:49:23,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:23,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:49:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:49:23,919 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) [2021-11-07 12:49:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:25,695 INFO L93 Difference]: Finished difference Result 50373 states and 68316 transitions. [2021-11-07 12:49:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:49:25,696 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 [2021-11-07 12:49:25,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:25,775 INFO L225 Difference]: With dead ends: 50373 [2021-11-07 12:49:25,775 INFO L226 Difference]: Without dead ends: 37026 [2021-11-07 12:49:25,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:49:25,808 INFO L933 BasicCegarLoop]: 1245 mSDtfsCounter, 1323 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.09ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.34ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:25,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1327 Valid, 3198 Invalid, 108 Unknown, 0 Unchecked, 5.09ms Time], IncrementalHoareTripleChecker [17 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 94.34ms Time] [2021-11-07 12:49:25,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37026 states. [2021-11-07 12:49:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37026 to 13793. [2021-11-07 12:49:26,827 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) [2021-11-07 12:49:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13793 states to 13793 states and 18781 transitions. [2021-11-07 12:49:26,857 INFO L78 Accepts]: Start accepts. Automaton has 13793 states and 18781 transitions. Word has length 145 [2021-11-07 12:49:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:26,857 INFO L470 AbstractCegarLoop]: Abstraction has 13793 states and 18781 transitions. [2021-11-07 12:49:26,857 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) [2021-11-07 12:49:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 13793 states and 18781 transitions. [2021-11-07 12:49:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-07 12:49:26,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:26,865 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] [2021-11-07 12:49:26,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 12:49:26,866 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:26,866 INFO L85 PathProgramCache]: Analyzing trace with hash 98618116, now seen corresponding path program 1 times [2021-11-07 12:49:26,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:26,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304684794] [2021-11-07 12:49:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:26,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 12:49:27,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:27,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304684794] [2021-11-07 12:49:27,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304684794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:27,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:49:27,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 12:49:27,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136747434] [2021-11-07 12:49:27,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:27,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 12:49:27,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:27,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 12:49:27,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 12:49:27,188 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) [2021-11-07 12:49:34,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:34,865 INFO L93 Difference]: Finished difference Result 86788 states and 117350 transitions. [2021-11-07 12:49:34,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-07 12:49:34,866 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 [2021-11-07 12:49:34,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:35,010 INFO L225 Difference]: With dead ends: 86788 [2021-11-07 12:49:35,011 INFO L226 Difference]: Without dead ends: 73313 [2021-11-07 12:49:35,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1741 ImplicationChecksByTransitivity, 922.34ms TimeCoverageRelationStatistics Valid=896, Invalid=3796, Unknown=0, NotChecked=0, Total=4692 [2021-11-07 12:49:35,051 INFO L933 BasicCegarLoop]: 3733 mSDtfsCounter, 6076 mSDsluCounter, 16308 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1356.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6076 SdHoareTripleChecker+Valid, 20041 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.58ms SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1558.87ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:35,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6076 Valid, 20041 Invalid, 1196 Unknown, 0 Unchecked, 33.58ms Time], IncrementalHoareTripleChecker [125 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1558.87ms Time] [2021-11-07 12:49:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73313 states. [2021-11-07 12:49:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73313 to 13793. [2021-11-07 12:49:36,311 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) [2021-11-07 12:49:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13793 states to 13793 states and 18773 transitions. [2021-11-07 12:49:36,337 INFO L78 Accepts]: Start accepts. Automaton has 13793 states and 18773 transitions. Word has length 147 [2021-11-07 12:49:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:36,337 INFO L470 AbstractCegarLoop]: Abstraction has 13793 states and 18773 transitions. [2021-11-07 12:49:36,338 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) [2021-11-07 12:49:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 13793 states and 18773 transitions. [2021-11-07 12:49:36,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 12:49:36,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:36,344 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] [2021-11-07 12:49:36,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 12:49:36,345 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:36,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:36,345 INFO L85 PathProgramCache]: Analyzing trace with hash -679863212, now seen corresponding path program 1 times [2021-11-07 12:49:36,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:36,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883819710] [2021-11-07 12:49:36,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:36,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:36,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:36,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883819710] [2021-11-07 12:49:36,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883819710] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:49:36,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18009437] [2021-11-07 12:49:36,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:36,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:49:36,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:49:36,508 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) [2021-11-07 12:49:36,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 12:49:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:36,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 12:49:36,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:37,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:49:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:37,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18009437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 12:49:37,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 12:49:37,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-07 12:49:37,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775542690] [2021-11-07 12:49:37,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 12:49:37,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 12:49:37,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:37,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 12:49:37,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-07 12:49:37,544 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) [2021-11-07 12:49:38,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:38,750 INFO L93 Difference]: Finished difference Result 27652 states and 37706 transitions. [2021-11-07 12:49:38,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 12:49:38,751 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 [2021-11-07 12:49:38,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:38,781 INFO L225 Difference]: With dead ends: 27652 [2021-11-07 12:49:38,781 INFO L226 Difference]: Without dead ends: 14177 [2021-11-07 12:49:38,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 171.28ms TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-07 12:49:38,803 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 22 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3818 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.66ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.07ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:38,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 3818 Invalid, 68 Unknown, 0 Unchecked, 2.66ms Time], IncrementalHoareTripleChecker [15 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 69.07ms Time] [2021-11-07 12:49:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14177 states. [2021-11-07 12:49:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14177 to 14177. [2021-11-07 12:49:39,825 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) [2021-11-07 12:49:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14177 states to 14177 states and 19157 transitions. [2021-11-07 12:49:39,851 INFO L78 Accepts]: Start accepts. Automaton has 14177 states and 19157 transitions. Word has length 152 [2021-11-07 12:49:39,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:39,851 INFO L470 AbstractCegarLoop]: Abstraction has 14177 states and 19157 transitions. [2021-11-07 12:49:39,852 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) [2021-11-07 12:49:39,852 INFO L276 IsEmpty]: Start isEmpty. Operand 14177 states and 19157 transitions. [2021-11-07 12:49:39,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 12:49:39,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:39,858 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] [2021-11-07 12:49:39,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 12:49:40,062 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 [2021-11-07 12:49:40,063 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:40,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:40,063 INFO L85 PathProgramCache]: Analyzing trace with hash -620383506, now seen corresponding path program 1 times [2021-11-07 12:49:40,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:40,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871769616] [2021-11-07 12:49:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:40,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 12:49:40,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:40,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871769616] [2021-11-07 12:49:40,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871769616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:40,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:49:40,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:49:40,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041184450] [2021-11-07 12:49:40,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:40,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:49:40,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:40,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:49:40,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:49:40,279 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) [2021-11-07 12:49:42,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:42,711 INFO L93 Difference]: Finished difference Result 39670 states and 53622 transitions. [2021-11-07 12:49:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:49:42,712 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 [2021-11-07 12:49:42,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:42,770 INFO L225 Difference]: With dead ends: 39670 [2021-11-07 12:49:42,770 INFO L226 Difference]: Without dead ends: 25811 [2021-11-07 12:49:42,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.39ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:49:42,796 INFO L933 BasicCegarLoop]: 1305 mSDtfsCounter, 979 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 367.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 417.82ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:42,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 3361 Invalid, 16 Unknown, 0 Unchecked, 4.15ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 417.82ms Time] [2021-11-07 12:49:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25811 states. [2021-11-07 12:49:44,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25811 to 14209. [2021-11-07 12:49:44,062 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) [2021-11-07 12:49:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14209 states to 14209 states and 19189 transitions. [2021-11-07 12:49:44,087 INFO L78 Accepts]: Start accepts. Automaton has 14209 states and 19189 transitions. Word has length 153 [2021-11-07 12:49:44,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:44,088 INFO L470 AbstractCegarLoop]: Abstraction has 14209 states and 19189 transitions. [2021-11-07 12:49:44,088 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) [2021-11-07 12:49:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 14209 states and 19189 transitions. [2021-11-07 12:49:44,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 12:49:44,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:44,094 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] [2021-11-07 12:49:44,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 12:49:44,094 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:44,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:44,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1937736570, now seen corresponding path program 1 times [2021-11-07 12:49:44,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:44,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230411341] [2021-11-07 12:49:44,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:44,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 12:49:44,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:44,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230411341] [2021-11-07 12:49:44,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230411341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:44,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:49:44,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 12:49:44,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149523058] [2021-11-07 12:49:44,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:44,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:49:44,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:49:44,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:49:44,191 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) [2021-11-07 12:49:46,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:46,650 INFO L93 Difference]: Finished difference Result 40054 states and 54086 transitions. [2021-11-07 12:49:46,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 12:49:46,650 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 [2021-11-07 12:49:46,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:46,709 INFO L225 Difference]: With dead ends: 40054 [2021-11-07 12:49:46,709 INFO L226 Difference]: Without dead ends: 26163 [2021-11-07 12:49:46,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 51.51ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-07 12:49:46,737 INFO L933 BasicCegarLoop]: 1290 mSDtfsCounter, 1923 mSDsluCounter, 5663 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 232.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 6953 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.26ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 266.40ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:46,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1923 Valid, 6953 Invalid, 104 Unknown, 0 Unchecked, 6.26ms Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 266.40ms Time] [2021-11-07 12:49:46,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26163 states. [2021-11-07 12:49:48,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26163 to 14321. [2021-11-07 12:49:48,212 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) [2021-11-07 12:49:48,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14321 states to 14321 states and 19301 transitions. [2021-11-07 12:49:48,243 INFO L78 Accepts]: Start accepts. Automaton has 14321 states and 19301 transitions. Word has length 165 [2021-11-07 12:49:48,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:48,243 INFO L470 AbstractCegarLoop]: Abstraction has 14321 states and 19301 transitions. [2021-11-07 12:49:48,243 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) [2021-11-07 12:49:48,244 INFO L276 IsEmpty]: Start isEmpty. Operand 14321 states and 19301 transitions. [2021-11-07 12:49:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-07 12:49:48,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:48,250 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] [2021-11-07 12:49:48,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 12:49:48,250 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:48,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:48,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1306670684, now seen corresponding path program 2 times [2021-11-07 12:49:48,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:48,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502380218] [2021-11-07 12:49:48,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:48,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:48,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:48,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502380218] [2021-11-07 12:49:48,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502380218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:49:48,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223556471] [2021-11-07 12:49:48,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 12:49:48,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:49:48,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:49:48,616 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) [2021-11-07 12:49:48,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 12:49:49,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 12:49:49,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 12:49:49,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 12:49:49,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:49,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:49:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 38 proven. 484 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:50,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223556471] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 12:49:50,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 12:49:50,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-11-07 12:49:50,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693650107] [2021-11-07 12:49:50,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 12:49:50,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 12:49:50,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:50,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 12:49:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 12:49:50,459 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) [2021-11-07 12:49:51,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:49:51,936 INFO L93 Difference]: Finished difference Result 29092 states and 39338 transitions. [2021-11-07 12:49:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 12:49:51,936 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 [2021-11-07 12:49:51,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:49:51,968 INFO L225 Difference]: With dead ends: 29092 [2021-11-07 12:49:51,968 INFO L226 Difference]: Without dead ends: 15089 [2021-11-07 12:49:51,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 626.84ms TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 12:49:51,991 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 69 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.05ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.72ms IncrementalHoareTripleChecker+Time [2021-11-07 12:49:51,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2292 Invalid, 126 Unknown, 0 Unchecked, 2.05ms Time], IncrementalHoareTripleChecker [29 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 108.72ms Time] [2021-11-07 12:49:52,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15089 states. [2021-11-07 12:49:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15089 to 15089. [2021-11-07 12:49:53,374 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) [2021-11-07 12:49:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15089 states to 15089 states and 20069 transitions. [2021-11-07 12:49:53,398 INFO L78 Accepts]: Start accepts. Automaton has 15089 states and 20069 transitions. Word has length 176 [2021-11-07 12:49:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:49:53,398 INFO L470 AbstractCegarLoop]: Abstraction has 15089 states and 20069 transitions. [2021-11-07 12:49:53,398 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) [2021-11-07 12:49:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 15089 states and 20069 transitions. [2021-11-07 12:49:53,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-07 12:49:53,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:49:53,405 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] [2021-11-07 12:49:53,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-07 12:49:53,627 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 [2021-11-07 12:49:53,627 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:49:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:49:53,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1201165380, now seen corresponding path program 3 times [2021-11-07 12:49:53,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:49:53,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254966930] [2021-11-07 12:49:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:49:53,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:49:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:49:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:49:54,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:49:54,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254966930] [2021-11-07 12:49:54,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254966930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:49:54,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092442912] [2021-11-07 12:49:54,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 12:49:54,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:49:54,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:49:54,576 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) [2021-11-07 12:49:54,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 12:49:56,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 12:49:56,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 12:49:56,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-07 12:49:56,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:49:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 2137 trivial. 0 not checked. [2021-11-07 12:49:57,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:49:57,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092442912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:49:57,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:49:57,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [49] total 56 [2021-11-07 12:49:57,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689505631] [2021-11-07 12:49:57,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:49:57,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 12:49:57,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:49:57,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 12:49:57,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 12:49:57,211 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) [2021-11-07 12:50:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:50:11,144 INFO L93 Difference]: Finished difference Result 102906 states and 133824 transitions. [2021-11-07 12:50:11,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-07 12:50:11,145 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 [2021-11-07 12:50:11,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:50:11,317 INFO L225 Difference]: With dead ends: 102906 [2021-11-07 12:50:11,318 INFO L226 Difference]: Without dead ends: 88135 [2021-11-07 12:50:11,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 2882.18ms TimeCoverageRelationStatistics Valid=2071, Invalid=11269, Unknown=0, NotChecked=0, Total=13340 [2021-11-07 12:50:11,364 INFO L933 BasicCegarLoop]: 3786 mSDtfsCounter, 5380 mSDsluCounter, 18053 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 796.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5380 SdHoareTripleChecker+Valid, 21839 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.52ms SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 964.94ms IncrementalHoareTripleChecker+Time [2021-11-07 12:50:11,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5380 Valid, 21839 Invalid, 1216 Unknown, 0 Unchecked, 32.52ms Time], IncrementalHoareTripleChecker [127 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 964.94ms Time] [2021-11-07 12:50:11,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88135 states. [2021-11-07 12:50:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88135 to 15089. [2021-11-07 12:50:13,529 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) [2021-11-07 12:50:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15089 states to 15089 states and 20061 transitions. [2021-11-07 12:50:13,559 INFO L78 Accepts]: Start accepts. Automaton has 15089 states and 20061 transitions. Word has length 224 [2021-11-07 12:50:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:50:13,559 INFO L470 AbstractCegarLoop]: Abstraction has 15089 states and 20061 transitions. [2021-11-07 12:50:13,560 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) [2021-11-07 12:50:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 15089 states and 20061 transitions. [2021-11-07 12:50:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-07 12:50:13,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:50:13,566 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] [2021-11-07 12:50:13,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 12:50:13,779 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 [2021-11-07 12:50:13,780 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:50:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:50:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1402209096, now seen corresponding path program 1 times [2021-11-07 12:50:13,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:50:13,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997380860] [2021-11-07 12:50:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:50:13,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:50:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:50:14,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:50:14,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997380860] [2021-11-07 12:50:14,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997380860] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:50:14,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041858755] [2021-11-07 12:50:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:50:14,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:50:14,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:50:14,677 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) [2021-11-07 12:50:14,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 12:50:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:15,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-07 12:50:15,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:50:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:50:15,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:50:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2175 backedges. 38 proven. 2116 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 12:50:16,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041858755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 12:50:16,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 12:50:16,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 67 [2021-11-07 12:50:16,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886170193] [2021-11-07 12:50:16,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 12:50:16,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-07 12:50:16,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:50:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-07 12:50:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 12:50:16,246 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) [2021-11-07 12:50:18,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:50:18,412 INFO L93 Difference]: Finished difference Result 30436 states and 40570 transitions. [2021-11-07 12:50:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 12:50:18,413 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 [2021-11-07 12:50:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:50:18,445 INFO L225 Difference]: With dead ends: 30436 [2021-11-07 12:50:18,446 INFO L226 Difference]: Without dead ends: 15665 [2021-11-07 12:50:18,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1123.32ms TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 12:50:18,469 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 64 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.44ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.01ms IncrementalHoareTripleChecker+Time [2021-11-07 12:50:18,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 3055 Invalid, 144 Unknown, 0 Unchecked, 2.44ms Time], IncrementalHoareTripleChecker [7 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 129.01ms Time] [2021-11-07 12:50:18,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15665 states. [2021-11-07 12:50:20,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15665 to 15665. [2021-11-07 12:50:20,362 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) [2021-11-07 12:50:20,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15665 states to 15665 states and 20637 transitions. [2021-11-07 12:50:20,389 INFO L78 Accepts]: Start accepts. Automaton has 15665 states and 20637 transitions. Word has length 231 [2021-11-07 12:50:20,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:50:20,390 INFO L470 AbstractCegarLoop]: Abstraction has 15665 states and 20637 transitions. [2021-11-07 12:50:20,390 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) [2021-11-07 12:50:20,390 INFO L276 IsEmpty]: Start isEmpty. Operand 15665 states and 20637 transitions. [2021-11-07 12:50:20,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-07 12:50:20,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:50:20,397 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] [2021-11-07 12:50:20,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 12:50:20,615 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 [2021-11-07 12:50:20,615 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:50:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:50:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash -896357808, now seen corresponding path program 2 times [2021-11-07 12:50:20,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:50:20,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329052903] [2021-11-07 12:50:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:50:20,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:50:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4155 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 4117 trivial. 0 not checked. [2021-11-07 12:50:20,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:50:20,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329052903] [2021-11-07 12:50:20,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329052903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:50:20,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:50:20,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 12:50:20,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784308915] [2021-11-07 12:50:20,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:50:20,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:50:20,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:50:20,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:50:20,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:50:20,859 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) [2021-11-07 12:50:26,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:50:26,992 INFO L93 Difference]: Finished difference Result 63609 states and 85454 transitions. [2021-11-07 12:50:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 12:50:26,992 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 [2021-11-07 12:50:26,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:50:27,083 INFO L225 Difference]: With dead ends: 63609 [2021-11-07 12:50:27,083 INFO L226 Difference]: Without dead ends: 48262 [2021-11-07 12:50:27,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 251.36ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-07 12:50:27,110 INFO L933 BasicCegarLoop]: 1246 mSDtfsCounter, 2496 mSDsluCounter, 5024 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 6270 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.13ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.78ms IncrementalHoareTripleChecker+Time [2021-11-07 12:50:27,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2498 Valid, 6270 Invalid, 204 Unknown, 0 Unchecked, 9.13ms Time], IncrementalHoareTripleChecker [22 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 144.78ms Time] [2021-11-07 12:50:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48262 states. [2021-11-07 12:50:29,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48262 to 15729. [2021-11-07 12:50:29,286 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) [2021-11-07 12:50:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15729 states to 15729 states and 20701 transitions. [2021-11-07 12:50:29,317 INFO L78 Accepts]: Start accepts. Automaton has 15729 states and 20701 transitions. Word has length 267 [2021-11-07 12:50:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:50:29,317 INFO L470 AbstractCegarLoop]: Abstraction has 15729 states and 20701 transitions. [2021-11-07 12:50:29,318 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) [2021-11-07 12:50:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 15729 states and 20701 transitions. [2021-11-07 12:50:29,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-07 12:50:29,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:50:29,325 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] [2021-11-07 12:50:29,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 12:50:29,326 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:50:29,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:50:29,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1900859572, now seen corresponding path program 1 times [2021-11-07 12:50:29,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:50:29,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598200090] [2021-11-07 12:50:29,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:50:29,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:50:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4155 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 4117 trivial. 0 not checked. [2021-11-07 12:50:29,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:50:29,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598200090] [2021-11-07 12:50:29,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598200090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:50:29,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:50:29,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 12:50:29,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451423302] [2021-11-07 12:50:29,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:50:29,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 12:50:29,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:50:29,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 12:50:29,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-07 12:50:29,840 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) [2021-11-07 12:50:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:50:48,475 INFO L93 Difference]: Finished difference Result 102086 states and 133804 transitions. [2021-11-07 12:50:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-07 12:50:48,476 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 [2021-11-07 12:50:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:50:48,624 INFO L225 Difference]: With dead ends: 102086 [2021-11-07 12:50:48,624 INFO L226 Difference]: Without dead ends: 81987 [2021-11-07 12:50:48,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2830 ImplicationChecksByTransitivity, 1957.80ms TimeCoverageRelationStatistics Valid=1485, Invalid=5997, Unknown=0, NotChecked=0, Total=7482 [2021-11-07 12:50:48,669 INFO L933 BasicCegarLoop]: 2868 mSDtfsCounter, 8014 mSDsluCounter, 14694 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1793.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8014 SdHoareTripleChecker+Valid, 17562 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.74ms SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2068.82ms IncrementalHoareTripleChecker+Time [2021-11-07 12:50:48,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8014 Valid, 17562 Invalid, 1367 Unknown, 0 Unchecked, 32.74ms Time], IncrementalHoareTripleChecker [170 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 2068.82ms Time] [2021-11-07 12:50:48,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81987 states. [2021-11-07 12:50:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81987 to 20075. [2021-11-07 12:50:52,309 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) [2021-11-07 12:50:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20075 states to 20075 states and 26175 transitions. [2021-11-07 12:50:52,343 INFO L78 Accepts]: Start accepts. Automaton has 20075 states and 26175 transitions. Word has length 269 [2021-11-07 12:50:52,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:50:52,344 INFO L470 AbstractCegarLoop]: Abstraction has 20075 states and 26175 transitions. [2021-11-07 12:50:52,344 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) [2021-11-07 12:50:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 20075 states and 26175 transitions. [2021-11-07 12:50:52,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-07 12:50:52,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:50:52,362 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] [2021-11-07 12:50:52,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 12:50:52,362 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 12:50:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:50:52,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1480091276, now seen corresponding path program 1 times [2021-11-07 12:50:52,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:50:52,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756256822] [2021-11-07 12:50:52,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:50:52,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:50:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:50:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 4152 trivial. 0 not checked. [2021-11-07 12:50:52,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:50:52,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756256822] [2021-11-07 12:50:52,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756256822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:50:52,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:50:52,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 12:50:52,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779792032] [2021-11-07 12:50:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:50:52,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 12:50:52,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:50:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 12:50:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-07 12:50:52,896 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) [2021-11-07 12:51:16,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:51:16,329 INFO L93 Difference]: Finished difference Result 110902 states and 144516 transitions. [2021-11-07 12:51:16,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-07 12:51:16,330 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 [2021-11-07 12:51:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:51:16,332 INFO L225 Difference]: With dead ends: 110902 [2021-11-07 12:51:16,332 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 12:51:16,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2683 ImplicationChecksByTransitivity, 2063.46ms TimeCoverageRelationStatistics Valid=1485, Invalid=5997, Unknown=0, NotChecked=0, Total=7482 [2021-11-07 12:51:16,400 INFO L933 BasicCegarLoop]: 3271 mSDtfsCounter, 7348 mSDsluCounter, 14250 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2942.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7348 SdHoareTripleChecker+Valid, 17521 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.88ms SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3268.79ms IncrementalHoareTripleChecker+Time [2021-11-07 12:51:16,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7348 Valid, 17521 Invalid, 1305 Unknown, 0 Unchecked, 35.88ms Time], IncrementalHoareTripleChecker [146 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 3268.79ms Time] [2021-11-07 12:51:16,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 12:51:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 12:51:16,401 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) [2021-11-07 12:51:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 12:51:16,402 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 300 [2021-11-07 12:51:16,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:51:16,402 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 12:51:16,402 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) [2021-11-07 12:51:16,402 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 12:51:16,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 12:51:16,404 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-07 12:51:16,405 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-07 12:51:16,405 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-11-07 12:51:16,405 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-11-07 12:51:16,405 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-11-07 12:51:16,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 12:51:16,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Killed by 15