./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--usb--misc--idmouse.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--usb--misc--idmouse.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 57ba9a4d546a973620a0029f54a814a104db676a0fd0f250dd5545a7c0f94302 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:59:39,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:59:39,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:59:39,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:59:39,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:59:39,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:59:39,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:59:39,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:59:39,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:59:39,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:59:39,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:59:39,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:59:39,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:59:39,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:59:39,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:59:39,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:59:39,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:59:39,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:59:39,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:59:39,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:59:39,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:59:39,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:59:39,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:59:39,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:59:39,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:59:39,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:59:39,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:59:39,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:59:39,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:59:39,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:59:39,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:59:39,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:59:39,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:59:39,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:59:39,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:59:39,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:59:39,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:59:39,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:59:39,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:59:39,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:59:39,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:59:39,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:59:39,295 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:59:39,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:59:39,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:59:39,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:59:39,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:59:39,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:59:39,297 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:59:39,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:59:39,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:59:39,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:59:39,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:59:39,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:59:39,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:59:39,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:59:39,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:59:39,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:59:39,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:59:39,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:59:39,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:59:39,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:59:39,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:59:39,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:59:39,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:59:39,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:59:39,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:59:39,299 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:59:39,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:59:39,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:59:39,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:59:39,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57ba9a4d546a973620a0029f54a814a104db676a0fd0f250dd5545a7c0f94302 [2021-11-07 12:59:39,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:59:39,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:59:39,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:59:39,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:59:39,452 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:59:39,453 INFO L432 ainManager$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--usb--misc--idmouse.ko-entry_point.cil.out.i [2021-11-07 12:59:39,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/530edd804/f5ae318bf43d4ba79b2c9fd58b1bc141/FLAG22c4ddcbf [2021-11-07 12:59:40,050 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:59:40,051 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--usb--misc--idmouse.ko-entry_point.cil.out.i [2021-11-07 12:59:40,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/530edd804/f5ae318bf43d4ba79b2c9fd58b1bc141/FLAG22c4ddcbf [2021-11-07 12:59:40,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/530edd804/f5ae318bf43d4ba79b2c9fd58b1bc141 [2021-11-07 12:59:40,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:59:40,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:59:40,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:59:40,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:59:40,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:59:40,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:40" (1/1) ... [2021-11-07 12:59:40,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61383d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:40, skipping insertion in model container [2021-11-07 12:59:40,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:40" (1/1) ... [2021-11-07 12:59:40,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:59:40,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:59:41,029 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--usb--misc--idmouse.ko-entry_point.cil.out.i[101600,101613] [2021-11-07 12:59:41,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:59:41,181 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:59:41,250 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--usb--misc--idmouse.ko-entry_point.cil.out.i[101600,101613] [2021-11-07 12:59:41,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:59:41,375 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:59:41,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41 WrapperNode [2021-11-07 12:59:41,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:59:41,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:59:41,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:59:41,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:59:41,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 12:59:41,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 12:59:41,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:59:41,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:59:41,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:59:41,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:59:41,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 12:59:41,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 12:59:41,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 12:59:41,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 12:59:41,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 12:59:41,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 12:59:41,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 12:59:41,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:59:41,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:59:41,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:59:41,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:59:41,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (1/1) ... [2021-11-07 12:59:41,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:59:41,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:59:41,632 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 12:59:41,655 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 12:59:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:59:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:59:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:59:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:59:41,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 12:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:59:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:59:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:59:41,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:59:42,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:59:42,885 INFO L299 CfgBuilder]: Removed 333 assume(true) statements. [2021-11-07 12:59:42,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:42 BoogieIcfgContainer [2021-11-07 12:59:42,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:59:42,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:59:42,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:59:42,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:59:42,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:59:40" (1/3) ... [2021-11-07 12:59:42,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe97bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:42, skipping insertion in model container [2021-11-07 12:59:42,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:41" (2/3) ... [2021-11-07 12:59:42,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe97bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:42, skipping insertion in model container [2021-11-07 12:59:42,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:42" (3/3) ... [2021-11-07 12:59:42,896 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point.cil.out.i [2021-11-07 12:59:42,901 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:59:42,901 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 12:59:42,941 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:59:42,947 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 12:59:42,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 12:59:42,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 288 states have (on average 1.4201388888888888) internal successors, (409), 294 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 12:59:42,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 12:59:42,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:42,986 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] [2021-11-07 12:59:42,987 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:42,991 INFO L85 PathProgramCache]: Analyzing trace with hash 146323834, now seen corresponding path program 1 times [2021-11-07 12:59:42,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:42,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132405012] [2021-11-07 12:59:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:42,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:43,323 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 12:59:43,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:43,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132405012] [2021-11-07 12:59:43,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132405012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:43,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:43,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:59:43,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767108075] [2021-11-07 12:59:43,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:43,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:59:43,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:43,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:59:43,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:43,349 INFO L87 Difference]: Start difference. First operand has 295 states, 288 states have (on average 1.4201388888888888) internal successors, (409), 294 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 12:59:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:43,496 INFO L93 Difference]: Finished difference Result 819 states and 1141 transitions. [2021-11-07 12:59:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:59:43,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-11-07 12:59:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:43,513 INFO L225 Difference]: With dead ends: 819 [2021-11-07 12:59:43,513 INFO L226 Difference]: Without dead ends: 513 [2021-11-07 12:59:43,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:43,526 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 327 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.75ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.74ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:43,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 761 Invalid, 15 Unknown, 0 Unchecked, 4.75ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 67.74ms Time] [2021-11-07 12:59:43,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-11-07 12:59:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 511. [2021-11-07 12:59:43,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 505 states have (on average 1.3584158415841585) internal successors, (686), 510 states have internal predecessors, (686), 0 states have call successors, (0), 0 states 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 12:59:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 686 transitions. [2021-11-07 12:59:43,598 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 686 transitions. Word has length 21 [2021-11-07 12:59:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:43,599 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 686 transitions. [2021-11-07 12:59:43,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states 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 12:59:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 686 transitions. [2021-11-07 12:59:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 12:59:43,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:43,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:59:43,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:59:43,605 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:43,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:43,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2061979276, now seen corresponding path program 1 times [2021-11-07 12:59:43,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:43,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526931267] [2021-11-07 12:59:43,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:43,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:43,764 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 12:59:43,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:43,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526931267] [2021-11-07 12:59:43,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526931267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:43,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:43,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:59:43,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700196480] [2021-11-07 12:59:43,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:43,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:59:43,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:43,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:59:43,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:43,768 INFO L87 Difference]: Start difference. First operand 511 states and 686 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:59:43,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:43,784 INFO L93 Difference]: Finished difference Result 511 states and 686 transitions. [2021-11-07 12:59:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:59:43,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-07 12:59:43,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:43,787 INFO L225 Difference]: With dead ends: 511 [2021-11-07 12:59:43,787 INFO L226 Difference]: Without dead ends: 509 [2021-11-07 12:59:43,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:43,791 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 349 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.59ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.13ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:43,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 374 Invalid, 1 Unknown, 0 Unchecked, 2.59ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.13ms Time] [2021-11-07 12:59:43,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-07 12:59:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2021-11-07 12:59:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 504 states have (on average 1.3571428571428572) internal successors, (684), 508 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 12:59:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 684 transitions. [2021-11-07 12:59:43,808 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 684 transitions. Word has length 28 [2021-11-07 12:59:43,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:43,809 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 684 transitions. [2021-11-07 12:59:43,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:59:43,810 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 684 transitions. [2021-11-07 12:59:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 12:59:43,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:43,814 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] [2021-11-07 12:59:43,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:59:43,814 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:43,815 INFO L85 PathProgramCache]: Analyzing trace with hash 503151157, now seen corresponding path program 1 times [2021-11-07 12:59:43,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:43,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029302533] [2021-11-07 12:59:43,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:43,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:43,918 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 12:59:43,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:43,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029302533] [2021-11-07 12:59:43,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029302533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:43,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:43,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:59:43,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369049928] [2021-11-07 12:59:43,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:43,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:59:43,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:43,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:59:43,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:43,920 INFO L87 Difference]: Start difference. First operand 509 states and 684 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 12:59:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:43,934 INFO L93 Difference]: Finished difference Result 509 states and 684 transitions. [2021-11-07 12:59:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:59:43,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-07 12:59:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:43,945 INFO L225 Difference]: With dead ends: 509 [2021-11-07 12:59:43,946 INFO L226 Difference]: Without dead ends: 507 [2021-11-07 12:59:43,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:43,947 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 346 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.08ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:43,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 372 Invalid, 1 Unknown, 0 Unchecked, 1.86ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.08ms Time] [2021-11-07 12:59:43,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-07 12:59:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2021-11-07 12:59:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 503 states have (on average 1.3558648111332008) internal successors, (682), 506 states have internal predecessors, (682), 0 states have call successors, (0), 0 states 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 12:59:43,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 682 transitions. [2021-11-07 12:59:43,963 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 682 transitions. Word has length 29 [2021-11-07 12:59:43,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:43,964 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 682 transitions. [2021-11-07 12:59:43,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 12:59:43,965 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 682 transitions. [2021-11-07 12:59:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 12:59:43,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:43,966 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] [2021-11-07 12:59:43,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:59:43,967 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:43,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1582184034, now seen corresponding path program 1 times [2021-11-07 12:59:43,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:43,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063472883] [2021-11-07 12:59:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:43,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:44,056 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 12:59:44,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:44,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063472883] [2021-11-07 12:59:44,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063472883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:44,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:44,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:59:44,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040902836] [2021-11-07 12:59:44,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:44,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:59:44,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:44,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:59:44,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:44,059 INFO L87 Difference]: Start difference. First operand 507 states and 682 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 12:59:44,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:44,074 INFO L93 Difference]: Finished difference Result 507 states and 682 transitions. [2021-11-07 12:59:44,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:59:44,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-07 12:59:44,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:44,077 INFO L225 Difference]: With dead ends: 507 [2021-11-07 12:59:44,077 INFO L226 Difference]: Without dead ends: 505 [2021-11-07 12:59:44,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:44,079 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 343 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.89ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:44,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 370 Invalid, 1 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.89ms Time] [2021-11-07 12:59:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-07 12:59:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2021-11-07 12:59:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 502 states have (on average 1.3545816733067728) internal successors, (680), 504 states have internal predecessors, (680), 0 states have call successors, (0), 0 states 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 12:59:44,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 680 transitions. [2021-11-07 12:59:44,096 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 680 transitions. Word has length 30 [2021-11-07 12:59:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:44,096 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 680 transitions. [2021-11-07 12:59:44,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 12:59:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 680 transitions. [2021-11-07 12:59:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 12:59:44,097 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:44,097 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] [2021-11-07 12:59:44,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:59:44,098 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:44,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:44,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1803065505, now seen corresponding path program 1 times [2021-11-07 12:59:44,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:44,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251938023] [2021-11-07 12:59:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:44,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:44,160 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 12:59:44,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:44,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251938023] [2021-11-07 12:59:44,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251938023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:44,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:44,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:59:44,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713369531] [2021-11-07 12:59:44,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:44,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:59:44,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:44,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:59:44,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:44,163 INFO L87 Difference]: Start difference. First operand 505 states and 680 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 12:59:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:44,215 INFO L93 Difference]: Finished difference Result 1466 states and 1985 transitions. [2021-11-07 12:59:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:59:44,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2021-11-07 12:59:44,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:44,218 INFO L225 Difference]: With dead ends: 1466 [2021-11-07 12:59:44,219 INFO L226 Difference]: Without dead ends: 981 [2021-11-07 12:59:44,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:44,220 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 336 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.60ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:44,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 800 Invalid, 10 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 6.60ms Time] [2021-11-07 12:59:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2021-11-07 12:59:44,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 978. [2021-11-07 12:59:44,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 975 states have (on average 1.357948717948718) internal successors, (1324), 977 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states 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 12:59:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1324 transitions. [2021-11-07 12:59:44,244 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1324 transitions. Word has length 31 [2021-11-07 12:59:44,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:44,245 INFO L470 AbstractCegarLoop]: Abstraction has 978 states and 1324 transitions. [2021-11-07 12:59:44,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 12:59:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1324 transitions. [2021-11-07 12:59:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 12:59:44,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:44,246 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] [2021-11-07 12:59:44,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:59:44,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:44,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash -60456504, now seen corresponding path program 1 times [2021-11-07 12:59:44,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:44,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617347725] [2021-11-07 12:59:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:44,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:44,294 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 12:59:44,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:44,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617347725] [2021-11-07 12:59:44,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617347725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:44,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:44,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 12:59:44,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516797725] [2021-11-07 12:59:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:44,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:59:44,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:44,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:59:44,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:44,296 INFO L87 Difference]: Start difference. First operand 978 states and 1324 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 12:59:44,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:44,317 INFO L93 Difference]: Finished difference Result 978 states and 1324 transitions. [2021-11-07 12:59:44,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:59:44,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-07 12:59:44,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:44,320 INFO L225 Difference]: With dead ends: 978 [2021-11-07 12:59:44,320 INFO L226 Difference]: Without dead ends: 969 [2021-11-07 12:59:44,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:44,321 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 339 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:44,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.74ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 12:59:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-07 12:59:44,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2021-11-07 12:59:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 967 states have (on average 1.3567735263702172) internal successors, (1312), 968 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states 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 12:59:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1312 transitions. [2021-11-07 12:59:44,348 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1312 transitions. Word has length 32 [2021-11-07 12:59:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:44,348 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1312 transitions. [2021-11-07 12:59:44,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 12:59:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1312 transitions. [2021-11-07 12:59:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 12:59:44,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:44,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:59:44,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:59:44,350 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:44,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:44,351 INFO L85 PathProgramCache]: Analyzing trace with hash 703031445, now seen corresponding path program 1 times [2021-11-07 12:59:44,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:44,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763550345] [2021-11-07 12:59:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:44,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:44,409 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 12:59:44,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:44,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763550345] [2021-11-07 12:59:44,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763550345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:44,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:44,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:59:44,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369327801] [2021-11-07 12:59:44,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:44,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:59:44,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:44,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:59:44,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:44,411 INFO L87 Difference]: Start difference. First operand 969 states and 1312 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 12:59:44,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:44,489 INFO L93 Difference]: Finished difference Result 2372 states and 3207 transitions. [2021-11-07 12:59:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:59:44,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-07 12:59:44,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:44,494 INFO L225 Difference]: With dead ends: 2372 [2021-11-07 12:59:44,494 INFO L226 Difference]: Without dead ends: 1423 [2021-11-07 12:59:44,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.28ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:44,496 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 182 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.04ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:44,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 707 Invalid, 17 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 27.04ms Time] [2021-11-07 12:59:44,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2021-11-07 12:59:44,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1415. [2021-11-07 12:59:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1413 states have (on average 1.3503184713375795) internal successors, (1908), 1414 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states 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 12:59:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1908 transitions. [2021-11-07 12:59:44,542 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1908 transitions. Word has length 58 [2021-11-07 12:59:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:44,543 INFO L470 AbstractCegarLoop]: Abstraction has 1415 states and 1908 transitions. [2021-11-07 12:59:44,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 12:59:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1908 transitions. [2021-11-07 12:59:44,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 12:59:44,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:44,545 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:59:44,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:59:44,546 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:44,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:44,546 INFO L85 PathProgramCache]: Analyzing trace with hash 584012738, now seen corresponding path program 1 times [2021-11-07 12:59:44,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:44,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542272453] [2021-11-07 12:59:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:44,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 12:59:44,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:44,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542272453] [2021-11-07 12:59:44,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542272453] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:59:44,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453677376] [2021-11-07 12:59:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:44,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:59:44,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:59:44,664 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 12:59:44,665 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 12:59:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:44,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:59:44,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:59:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 12:59:45,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:59:45,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453677376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:45,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:59:45,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-07 12:59:45,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569852446] [2021-11-07 12:59:45,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:45,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:59:45,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:45,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:59:45,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:59:45,123 INFO L87 Difference]: Start difference. First operand 1415 states and 1908 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:59:45,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:45,282 INFO L93 Difference]: Finished difference Result 4209 states and 5679 transitions. [2021-11-07 12:59:45,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:59:45,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 12:59:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:45,294 INFO L225 Difference]: With dead ends: 4209 [2021-11-07 12:59:45,295 INFO L226 Difference]: Without dead ends: 4201 [2021-11-07 12:59:45,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.86ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:59:45,296 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 644 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.35ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:45,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 1389 Invalid, 34 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 62.35ms Time] [2021-11-07 12:59:45,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2021-11-07 12:59:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 3939. [2021-11-07 12:59:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3937 states have (on average 1.3675387350774701) internal successors, (5384), 3938 states have internal predecessors, (5384), 0 states have call successors, (0), 0 states 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 12:59:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5384 transitions. [2021-11-07 12:59:45,422 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5384 transitions. Word has length 76 [2021-11-07 12:59:45,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:45,422 INFO L470 AbstractCegarLoop]: Abstraction has 3939 states and 5384 transitions. [2021-11-07 12:59:45,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:59:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5384 transitions. [2021-11-07 12:59:45,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 12:59:45,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:45,425 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:59:45,447 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 12:59:45,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:59:45,639 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash -427104512, now seen corresponding path program 1 times [2021-11-07 12:59:45,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:45,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395173396] [2021-11-07 12:59:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:45,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 12:59:45,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:45,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395173396] [2021-11-07 12:59:45,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395173396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:45,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:45,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:59:45,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163468992] [2021-11-07 12:59:45,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:45,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:59:45,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:45,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:59:45,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:59:45,749 INFO L87 Difference]: Start difference. First operand 3939 states and 5384 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:59:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:46,203 INFO L93 Difference]: Finished difference Result 16120 states and 22006 transitions. [2021-11-07 12:59:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 12:59:46,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 12:59:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:46,236 INFO L225 Difference]: With dead ends: 16120 [2021-11-07 12:59:46,237 INFO L226 Difference]: Without dead ends: 12201 [2021-11-07 12:59:46,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 44.97ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:59:46,247 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 1074 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.23ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.28ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:46,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1074 Valid, 2338 Invalid, 57 Unknown, 0 Unchecked, 4.23ms Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 46.28ms Time] [2021-11-07 12:59:46,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12201 states. [2021-11-07 12:59:46,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12201 to 3975. [2021-11-07 12:59:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 3973 states have (on average 1.3642084067455325) internal successors, (5420), 3974 states have internal predecessors, (5420), 0 states have call successors, (0), 0 states 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 12:59:46,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 5420 transitions. [2021-11-07 12:59:46,464 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 5420 transitions. Word has length 76 [2021-11-07 12:59:46,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:46,464 INFO L470 AbstractCegarLoop]: Abstraction has 3975 states and 5420 transitions. [2021-11-07 12:59:46,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:59:46,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 5420 transitions. [2021-11-07 12:59:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 12:59:46,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:46,468 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:59:46,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 12:59:46,468 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:46,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1353919452, now seen corresponding path program 1 times [2021-11-07 12:59:46,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:46,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242602272] [2021-11-07 12:59:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:46,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 12:59:46,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:46,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242602272] [2021-11-07 12:59:46,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242602272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:46,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:46,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:59:46,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223501655] [2021-11-07 12:59:46,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:46,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:59:46,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:46,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:59:46,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:59:46,644 INFO L87 Difference]: Start difference. First operand 3975 states and 5420 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:59:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:47,692 INFO L93 Difference]: Finished difference Result 26420 states and 36494 transitions. [2021-11-07 12:59:47,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 12:59:47,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-07 12:59:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:47,741 INFO L225 Difference]: With dead ends: 26420 [2021-11-07 12:59:47,741 INFO L226 Difference]: Without dead ends: 22465 [2021-11-07 12:59:47,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 90.61ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-07 12:59:47,753 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 1905 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.21ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.97ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:47,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 3226 Invalid, 93 Unknown, 0 Unchecked, 13.21ms Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 63.97ms Time] [2021-11-07 12:59:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22465 states. [2021-11-07 12:59:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22465 to 6509. [2021-11-07 12:59:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6509 states, 6507 states have (on average 1.3792838481635161) internal successors, (8975), 6508 states have internal predecessors, (8975), 0 states have call successors, (0), 0 states 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 12:59:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6509 states to 6509 states and 8975 transitions. [2021-11-07 12:59:48,186 INFO L78 Accepts]: Start accepts. Automaton has 6509 states and 8975 transitions. Word has length 78 [2021-11-07 12:59:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:48,187 INFO L470 AbstractCegarLoop]: Abstraction has 6509 states and 8975 transitions. [2021-11-07 12:59:48,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:59:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 6509 states and 8975 transitions. [2021-11-07 12:59:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 12:59:48,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:48,193 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 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 12:59:48,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 12:59:48,193 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:48,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:48,194 INFO L85 PathProgramCache]: Analyzing trace with hash 552987206, now seen corresponding path program 1 times [2021-11-07 12:59:48,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:48,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510365981] [2021-11-07 12:59:48,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:48,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 12:59:48,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:48,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510365981] [2021-11-07 12:59:48,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510365981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:48,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:48,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:59:48,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686783686] [2021-11-07 12:59:48,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:48,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:59:48,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:48,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:59:48,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:48,238 INFO L87 Difference]: Start difference. First operand 6509 states and 8975 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 12:59:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:48,640 INFO L93 Difference]: Finished difference Result 15658 states and 21654 transitions. [2021-11-07 12:59:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:59:48,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 105 [2021-11-07 12:59:48,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:48,658 INFO L225 Difference]: With dead ends: 15658 [2021-11-07 12:59:48,658 INFO L226 Difference]: Without dead ends: 9169 [2021-11-07 12:59:48,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:48,667 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 216 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.23ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:48,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 859 Invalid, 24 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 25.23ms Time] [2021-11-07 12:59:48,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9169 states. [2021-11-07 12:59:49,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9169 to 9111. [2021-11-07 12:59:49,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9111 states, 9109 states have (on average 1.3831375562630366) internal successors, (12599), 9110 states have internal predecessors, (12599), 0 states have call successors, (0), 0 states 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 12:59:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9111 states to 9111 states and 12599 transitions. [2021-11-07 12:59:49,187 INFO L78 Accepts]: Start accepts. Automaton has 9111 states and 12599 transitions. Word has length 105 [2021-11-07 12:59:49,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:49,187 INFO L470 AbstractCegarLoop]: Abstraction has 9111 states and 12599 transitions. [2021-11-07 12:59:49,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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 12:59:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 9111 states and 12599 transitions. [2021-11-07 12:59:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 12:59:49,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:49,196 INFO L514 BasicCegarLoop]: trace histogram [4, 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, 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 12:59:49,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 12:59:49,196 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:49,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2011077376, now seen corresponding path program 2 times [2021-11-07 12:59:49,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:49,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513641386] [2021-11-07 12:59:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:49,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 12:59:49,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:49,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513641386] [2021-11-07 12:59:49,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513641386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:49,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:49,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:59:49,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420595406] [2021-11-07 12:59:49,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:49,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:59:49,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:49,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:59:49,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:59:49,260 INFO L87 Difference]: Start difference. First operand 9111 states and 12599 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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 12:59:50,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:50,086 INFO L93 Difference]: Finished difference Result 34248 states and 47564 transitions. [2021-11-07 12:59:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:59:50,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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 105 [2021-11-07 12:59:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:50,139 INFO L225 Difference]: With dead ends: 34248 [2021-11-07 12:59:50,140 INFO L226 Difference]: Without dead ends: 25157 [2021-11-07 12:59:50,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:59:50,156 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 764 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.89ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:50,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 1236 Invalid, 15 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 23.89ms Time] [2021-11-07 12:59:50,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25157 states. [2021-11-07 12:59:50,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25157 to 9143. [2021-11-07 12:59:50,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9143 states, 9141 states have (on average 1.3817963023739197) internal successors, (12631), 9142 states have internal predecessors, (12631), 0 states have call successors, (0), 0 states 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 12:59:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9143 states to 9143 states and 12631 transitions. [2021-11-07 12:59:50,681 INFO L78 Accepts]: Start accepts. Automaton has 9143 states and 12631 transitions. Word has length 105 [2021-11-07 12:59:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:50,682 INFO L470 AbstractCegarLoop]: Abstraction has 9143 states and 12631 transitions. [2021-11-07 12:59:50,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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 12:59:50,682 INFO L276 IsEmpty]: Start isEmpty. Operand 9143 states and 12631 transitions. [2021-11-07 12:59:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 12:59:50,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:50,689 INFO L514 BasicCegarLoop]: trace histogram [3, 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 12:59:50,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 12:59:50,690 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:50,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:50,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1186647706, now seen corresponding path program 1 times [2021-11-07 12:59:50,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:50,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686351595] [2021-11-07 12:59:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:50,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 12:59:50,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:50,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686351595] [2021-11-07 12:59:50,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686351595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:50,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:50,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:59:50,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589365920] [2021-11-07 12:59:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:50,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:59:50,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:50,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:59:50,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:59:50,761 INFO L87 Difference]: Start difference. First operand 9143 states and 12631 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 12:59:52,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:52,216 INFO L93 Difference]: Finished difference Result 34692 states and 48083 transitions. [2021-11-07 12:59:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:59:52,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-07 12:59:52,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:52,274 INFO L225 Difference]: With dead ends: 34692 [2021-11-07 12:59:52,274 INFO L226 Difference]: Without dead ends: 30107 [2021-11-07 12:59:52,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.08ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:59:52,291 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 713 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.08ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.86ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:52,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 2022 Invalid, 25 Unknown, 0 Unchecked, 4.08ms Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 20.86ms Time] [2021-11-07 12:59:52,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30107 states. [2021-11-07 12:59:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30107 to 9191. [2021-11-07 12:59:52,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9191 states, 9189 states have (on average 1.379801937098705) internal successors, (12679), 9190 states have internal predecessors, (12679), 0 states have call successors, (0), 0 states 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 12:59:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 12679 transitions. [2021-11-07 12:59:52,899 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 12679 transitions. Word has length 106 [2021-11-07 12:59:52,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:52,899 INFO L470 AbstractCegarLoop]: Abstraction has 9191 states and 12679 transitions. [2021-11-07 12:59:52,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 12:59:52,900 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 12679 transitions. [2021-11-07 12:59:52,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 12:59:52,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:52,907 INFO L514 BasicCegarLoop]: trace histogram [3, 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 12:59:52,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 12:59:52,907 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:52,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:52,908 INFO L85 PathProgramCache]: Analyzing trace with hash 409920875, now seen corresponding path program 1 times [2021-11-07 12:59:52,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:52,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256298046] [2021-11-07 12:59:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:52,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 12:59:52,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:52,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256298046] [2021-11-07 12:59:52,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256298046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:52,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:52,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:59:52,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783186428] [2021-11-07 12:59:52,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:52,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:59:52,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:52,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:59:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:59:52,999 INFO L87 Difference]: Start difference. First operand 9191 states and 12679 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 12:59:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:53,644 INFO L93 Difference]: Finished difference Result 13777 states and 19028 transitions. [2021-11-07 12:59:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:59:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 108 [2021-11-07 12:59:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:53,667 INFO L225 Difference]: With dead ends: 13777 [2021-11-07 12:59:53,667 INFO L226 Difference]: Without dead ends: 13775 [2021-11-07 12:59:53,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.23ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:59:53,673 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 592 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.10ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.33ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:53,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 1393 Invalid, 19 Unknown, 0 Unchecked, 2.10ms Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 55.33ms Time] [2021-11-07 12:59:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13775 states. [2021-11-07 12:59:54,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13775 to 13765. [2021-11-07 12:59:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13765 states, 13763 states have (on average 1.3810215795974714) internal successors, (19007), 13764 states have internal predecessors, (19007), 0 states have call successors, (0), 0 states 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 12:59:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13765 states to 13765 states and 19007 transitions. [2021-11-07 12:59:54,329 INFO L78 Accepts]: Start accepts. Automaton has 13765 states and 19007 transitions. Word has length 108 [2021-11-07 12:59:54,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:54,330 INFO L470 AbstractCegarLoop]: Abstraction has 13765 states and 19007 transitions. [2021-11-07 12:59:54,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 12:59:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 13765 states and 19007 transitions. [2021-11-07 12:59:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 12:59:54,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:54,338 INFO L514 BasicCegarLoop]: trace histogram [3, 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 12:59:54,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 12:59:54,338 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:54,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:54,339 INFO L85 PathProgramCache]: Analyzing trace with hash 550469485, now seen corresponding path program 1 times [2021-11-07 12:59:54,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:54,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883927732] [2021-11-07 12:59:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:54,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 12:59:54,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:54,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883927732] [2021-11-07 12:59:54,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883927732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:54,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:54,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 12:59:54,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211988646] [2021-11-07 12:59:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:54,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:59:54,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:54,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:59:54,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:59:54,472 INFO L87 Difference]: Start difference. First operand 13765 states and 19007 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 12:59:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:57,172 INFO L93 Difference]: Finished difference Result 57851 states and 80196 transitions. [2021-11-07 12:59:57,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 12:59:57,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 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 108 [2021-11-07 12:59:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:57,240 INFO L225 Difference]: With dead ends: 57851 [2021-11-07 12:59:57,240 INFO L226 Difference]: Without dead ends: 44106 [2021-11-07 12:59:57,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 31.49ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 12:59:57,262 INFO L933 BasicCegarLoop]: 1055 mSDtfsCounter, 2197 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2197 SdHoareTripleChecker+Valid, 4307 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.31ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.53ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:57,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2197 Valid, 4307 Invalid, 56 Unknown, 0 Unchecked, 6.31ms Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 28.53ms Time] [2021-11-07 12:59:57,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44106 states. [2021-11-07 12:59:58,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44106 to 13116. [2021-11-07 12:59:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13116 states, 13114 states have (on average 1.375171572365411) internal successors, (18034), 13115 states have internal predecessors, (18034), 0 states have call successors, (0), 0 states 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 12:59:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13116 states to 13116 states and 18034 transitions. [2021-11-07 12:59:58,185 INFO L78 Accepts]: Start accepts. Automaton has 13116 states and 18034 transitions. Word has length 108 [2021-11-07 12:59:58,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:58,185 INFO L470 AbstractCegarLoop]: Abstraction has 13116 states and 18034 transitions. [2021-11-07 12:59:58,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 12:59:58,186 INFO L276 IsEmpty]: Start isEmpty. Operand 13116 states and 18034 transitions. [2021-11-07 12:59:58,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 12:59:58,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:58,195 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:59:58,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 12:59:58,196 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:58,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:58,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1231865512, now seen corresponding path program 1 times [2021-11-07 12:59:58,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:58,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825932367] [2021-11-07 12:59:58,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:58,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:58,274 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 12:59:58,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:58,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825932367] [2021-11-07 12:59:58,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825932367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:59:58,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:59:58,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:59:58,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228334112] [2021-11-07 12:59:58,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:59:58,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:59:58,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:59:58,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:59:58,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:58,277 INFO L87 Difference]: Start difference. First operand 13116 states and 18034 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 12:59:58,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:59:58,779 INFO L93 Difference]: Finished difference Result 20020 states and 27622 transitions. [2021-11-07 12:59:58,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:59:58,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 112 [2021-11-07 12:59:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:59:58,788 INFO L225 Difference]: With dead ends: 20020 [2021-11-07 12:59:58,789 INFO L226 Difference]: Without dead ends: 6075 [2021-11-07 12:59:58,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:59:58,805 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 253 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.16ms IncrementalHoareTripleChecker+Time [2021-11-07 12:59:58,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 680 Invalid, 11 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 60.16ms Time] [2021-11-07 12:59:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-11-07 12:59:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 5043. [2021-11-07 12:59:59,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5043 states, 5041 states have (on average 1.360245982939893) internal successors, (6857), 5042 states have internal predecessors, (6857), 0 states have call successors, (0), 0 states 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 12:59:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5043 states to 5043 states and 6857 transitions. [2021-11-07 12:59:59,155 INFO L78 Accepts]: Start accepts. Automaton has 5043 states and 6857 transitions. Word has length 112 [2021-11-07 12:59:59,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:59:59,156 INFO L470 AbstractCegarLoop]: Abstraction has 5043 states and 6857 transitions. [2021-11-07 12:59:59,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 12:59:59,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5043 states and 6857 transitions. [2021-11-07 12:59:59,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 12:59:59,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:59:59,161 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 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] [2021-11-07 12:59:59,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 12:59:59,161 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 12:59:59,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:59:59,161 INFO L85 PathProgramCache]: Analyzing trace with hash -601777007, now seen corresponding path program 1 times [2021-11-07 12:59:59,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:59:59,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823380327] [2021-11-07 12:59:59,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:59,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:59:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:59,250 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 12:59:59,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:59:59,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823380327] [2021-11-07 12:59:59,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823380327] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:59:59,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111701709] [2021-11-07 12:59:59,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:59:59,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:59:59,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:59:59,256 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 12:59:59,257 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 12:59:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:59:59,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 12:59:59,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:59:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 12:59:59,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:00:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 13:00:00,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111701709] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:00:00,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:00:00,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-11-07 13:00:00,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242430987] [2021-11-07 13:00:00,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:00:00,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 13:00:00,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:00:00,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 13:00:00,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 13:00:00,081 INFO L87 Difference]: Start difference. First operand 5043 states and 6857 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 13:00:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:00:00,985 INFO L93 Difference]: Finished difference Result 13877 states and 18829 transitions. [2021-11-07 13:00:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 13:00:00,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 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 114 [2021-11-07 13:00:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:00:01,009 INFO L225 Difference]: With dead ends: 13877 [2021-11-07 13:00:01,009 INFO L226 Difference]: Without dead ends: 13839 [2021-11-07 13:00:01,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 11.55ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 13:00:01,017 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 1348 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.38ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.42ms IncrementalHoareTripleChecker+Time [2021-11-07 13:00:01,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 2573 Invalid, 74 Unknown, 0 Unchecked, 6.38ms Time], IncrementalHoareTripleChecker [17 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 103.42ms Time] [2021-11-07 13:00:01,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13839 states. [2021-11-07 13:00:01,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13839 to 6833. [2021-11-07 13:00:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6833 states, 6831 states have (on average 1.3567559654516177) internal successors, (9268), 6832 states have internal predecessors, (9268), 0 states have call successors, (0), 0 states 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 13:00:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 9268 transitions. [2021-11-07 13:00:01,730 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 9268 transitions. Word has length 114 [2021-11-07 13:00:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:00:01,731 INFO L470 AbstractCegarLoop]: Abstraction has 6833 states and 9268 transitions. [2021-11-07 13:00:01,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 13:00:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 9268 transitions. [2021-11-07 13:00:01,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 13:00:01,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:00:01,738 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 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] [2021-11-07 13:00:01,765 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 13:00:01,959 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,SelfDestructingSolverStorable16 [2021-11-07 13:00:01,959 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:00:01,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:00:01,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1887751955, now seen corresponding path program 1 times [2021-11-07 13:00:01,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:00:01,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248194291] [2021-11-07 13:00:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:01,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:00:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 13:00:02,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:00:02,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248194291] [2021-11-07 13:00:02,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248194291] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:00:02,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681073615] [2021-11-07 13:00:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:02,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:00:02,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:00:02,070 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 13:00:02,099 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 13:00:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:02,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 13:00:02,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:00:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 13:00:02,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:00:02,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681073615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:00:02,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:00:02,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-11-07 13:00:02,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100080282] [2021-11-07 13:00:02,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:00:02,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:00:02,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:00:02,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:00:02,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:00:02,606 INFO L87 Difference]: Start difference. First operand 6833 states and 9268 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:00:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:00:03,368 INFO L93 Difference]: Finished difference Result 15163 states and 20788 transitions. [2021-11-07 13:00:03,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:00:03,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-07 13:00:03,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:00:03,380 INFO L225 Difference]: With dead ends: 15163 [2021-11-07 13:00:03,380 INFO L226 Difference]: Without dead ends: 9107 [2021-11-07 13:00:03,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.74ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:00:03,388 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 268 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.13ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.91ms IncrementalHoareTripleChecker+Time [2021-11-07 13:00:03,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 538 Invalid, 25 Unknown, 0 Unchecked, 1.13ms Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 29.91ms Time] [2021-11-07 13:00:03,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2021-11-07 13:00:04,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 8702. [2021-11-07 13:00:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8702 states, 8700 states have (on average 1.3664367816091954) internal successors, (11888), 8701 states have internal predecessors, (11888), 0 states have call successors, (0), 0 states 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 13:00:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 11888 transitions. [2021-11-07 13:00:04,061 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 11888 transitions. Word has length 114 [2021-11-07 13:00:04,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:00:04,061 INFO L470 AbstractCegarLoop]: Abstraction has 8702 states and 11888 transitions. [2021-11-07 13:00:04,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:00:04,061 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 11888 transitions. [2021-11-07 13:00:04,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 13:00:04,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:00:04,070 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1] [2021-11-07 13:00:04,091 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 13:00:04,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 13:00:04,290 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:00:04,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:00:04,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1795119650, now seen corresponding path program 1 times [2021-11-07 13:00:04,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:00:04,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785230716] [2021-11-07 13:00:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:04,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:00:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 13:00:04,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:00:04,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785230716] [2021-11-07 13:00:04,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785230716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:00:04,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:00:04,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:00:04,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890166415] [2021-11-07 13:00:04,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:00:04,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:00:04,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:00:04,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:00:04,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:00:04,372 INFO L87 Difference]: Start difference. First operand 8702 states and 11888 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:00:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:00:05,328 INFO L93 Difference]: Finished difference Result 20889 states and 28929 transitions. [2021-11-07 13:00:05,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:00:05,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-07 13:00:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:00:05,351 INFO L225 Difference]: With dead ends: 20889 [2021-11-07 13:00:05,351 INFO L226 Difference]: Without dead ends: 12207 [2021-11-07 13:00:05,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.09ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:00:05,364 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 180 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.27ms IncrementalHoareTripleChecker+Time [2021-11-07 13:00:05,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 789 Invalid, 38 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 61.27ms Time] [2021-11-07 13:00:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12207 states. [2021-11-07 13:00:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12207 to 12190. [2021-11-07 13:00:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12190 states, 12188 states have (on average 1.3725795864785035) internal successors, (16729), 12189 states have internal predecessors, (16729), 0 states have call successors, (0), 0 states 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 13:00:06,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12190 states to 12190 states and 16729 transitions. [2021-11-07 13:00:06,293 INFO L78 Accepts]: Start accepts. Automaton has 12190 states and 16729 transitions. Word has length 123 [2021-11-07 13:00:06,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:00:06,294 INFO L470 AbstractCegarLoop]: Abstraction has 12190 states and 16729 transitions. [2021-11-07 13:00:06,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:00:06,294 INFO L276 IsEmpty]: Start isEmpty. Operand 12190 states and 16729 transitions. [2021-11-07 13:00:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 13:00:06,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:00:06,302 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1] [2021-11-07 13:00:06,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 13:00:06,303 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:00:06,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:00:06,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1022698662, now seen corresponding path program 1 times [2021-11-07 13:00:06,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:00:06,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978765546] [2021-11-07 13:00:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:06,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:00:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 13:00:06,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:00:06,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978765546] [2021-11-07 13:00:06,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978765546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:00:06,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:00:06,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:00:06,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354629884] [2021-11-07 13:00:06,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:00:06,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:00:06,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:00:06,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:00:06,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:00:06,403 INFO L87 Difference]: Start difference. First operand 12190 states and 16729 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:00:08,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:00:08,018 INFO L93 Difference]: Finished difference Result 33108 states and 45677 transitions. [2021-11-07 13:00:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:00:08,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-11-07 13:00:08,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:00:08,057 INFO L225 Difference]: With dead ends: 33108 [2021-11-07 13:00:08,057 INFO L226 Difference]: Without dead ends: 20826 [2021-11-07 13:00:08,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:00:08,077 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 204 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.37ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.53ms IncrementalHoareTripleChecker+Time [2021-11-07 13:00:08,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 1338 Invalid, 29 Unknown, 0 Unchecked, 2.37ms Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 27.53ms Time] [2021-11-07 13:00:08,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20826 states. [2021-11-07 13:00:09,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20826 to 12190. [2021-11-07 13:00:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12190 states, 12188 states have (on average 1.3679849031834592) internal successors, (16673), 12189 states have internal predecessors, (16673), 0 states have call successors, (0), 0 states 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 13:00:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12190 states to 12190 states and 16673 transitions. [2021-11-07 13:00:09,280 INFO L78 Accepts]: Start accepts. Automaton has 12190 states and 16673 transitions. Word has length 123 [2021-11-07 13:00:09,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:00:09,280 INFO L470 AbstractCegarLoop]: Abstraction has 12190 states and 16673 transitions. [2021-11-07 13:00:09,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:00:09,281 INFO L276 IsEmpty]: Start isEmpty. Operand 12190 states and 16673 transitions. [2021-11-07 13:00:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 13:00:09,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:00:09,289 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1] [2021-11-07 13:00:09,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 13:00:09,289 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:00:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:00:09,290 INFO L85 PathProgramCache]: Analyzing trace with hash 655994454, now seen corresponding path program 1 times [2021-11-07 13:00:09,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:00:09,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790586716] [2021-11-07 13:00:09,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:09,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:00:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 13:00:09,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:00:09,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790586716] [2021-11-07 13:00:09,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790586716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:00:09,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:00:09,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 13:00:09,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417792156] [2021-11-07 13:00:09,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:00:09,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 13:00:09,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:00:09,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 13:00:09,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:00:09,402 INFO L87 Difference]: Start difference. First operand 12190 states and 16673 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:00:14,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:00:14,470 INFO L93 Difference]: Finished difference Result 80913 states and 113106 transitions. [2021-11-07 13:00:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 13:00:14,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 13:00:14,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:00:14,625 INFO L225 Difference]: With dead ends: 80913 [2021-11-07 13:00:14,625 INFO L226 Difference]: Without dead ends: 68743 [2021-11-07 13:00:14,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 81.89ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-07 13:00:14,665 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 3068 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3068 SdHoareTripleChecker+Valid, 4521 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.75ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.61ms IncrementalHoareTripleChecker+Time [2021-11-07 13:00:14,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3068 Valid, 4521 Invalid, 89 Unknown, 0 Unchecked, 11.75ms Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 85.61ms Time] [2021-11-07 13:00:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68743 states. [2021-11-07 13:00:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68743 to 12470. [2021-11-07 13:00:16,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12470 states, 12468 states have (on average 1.359720885466795) internal successors, (16953), 12469 states have internal predecessors, (16953), 0 states have call successors, (0), 0 states 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 13:00:16,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12470 states to 12470 states and 16953 transitions. [2021-11-07 13:00:16,309 INFO L78 Accepts]: Start accepts. Automaton has 12470 states and 16953 transitions. Word has length 125 [2021-11-07 13:00:16,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:00:16,309 INFO L470 AbstractCegarLoop]: Abstraction has 12470 states and 16953 transitions. [2021-11-07 13:00:16,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:00:16,310 INFO L276 IsEmpty]: Start isEmpty. Operand 12470 states and 16953 transitions. [2021-11-07 13:00:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 13:00:16,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:00:16,317 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:00:16,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 13:00:16,317 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:00:16,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:00:16,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1478219322, now seen corresponding path program 1 times [2021-11-07 13:00:16,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:00:16,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102096458] [2021-11-07 13:00:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:16,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:00:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 13:00:16,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:00:16,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102096458] [2021-11-07 13:00:16,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102096458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:00:16,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:00:16,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:00:16,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920604074] [2021-11-07 13:00:16,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:00:16,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:00:16,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:00:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:00:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:00:16,408 INFO L87 Difference]: Start difference. First operand 12470 states and 16953 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 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 13:00:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:00:17,472 INFO L93 Difference]: Finished difference Result 24922 states and 33885 transitions. [2021-11-07 13:00:17,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:00:17,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 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 127 [2021-11-07 13:00:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:00:17,491 INFO L225 Difference]: With dead ends: 24922 [2021-11-07 13:00:17,491 INFO L226 Difference]: Without dead ends: 12471 [2021-11-07 13:00:17,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:00:17,504 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 0 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.51ms IncrementalHoareTripleChecker+Time [2021-11-07 13:00:17,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 726 Invalid, 3 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 3.51ms Time] [2021-11-07 13:00:17,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12471 states. [2021-11-07 13:00:18,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12471 to 12471. [2021-11-07 13:00:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12471 states, 12469 states have (on average 1.3596920362498996) internal successors, (16954), 12470 states have internal predecessors, (16954), 0 states have call successors, (0), 0 states 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 13:00:18,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12471 states to 12471 states and 16954 transitions. [2021-11-07 13:00:18,587 INFO L78 Accepts]: Start accepts. Automaton has 12471 states and 16954 transitions. Word has length 127 [2021-11-07 13:00:18,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:00:18,587 INFO L470 AbstractCegarLoop]: Abstraction has 12471 states and 16954 transitions. [2021-11-07 13:00:18,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 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 13:00:18,587 INFO L276 IsEmpty]: Start isEmpty. Operand 12471 states and 16954 transitions. [2021-11-07 13:00:18,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-07 13:00:18,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:00:18,595 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:00:18,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 13:00:18,595 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:00:18,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:00:18,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1234380126, now seen corresponding path program 1 times [2021-11-07 13:00:18,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:00:18,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197834474] [2021-11-07 13:00:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:18,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:00:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 13:00:18,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:00:18,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197834474] [2021-11-07 13:00:18,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197834474] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:00:18,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486523612] [2021-11-07 13:00:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:18,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:00:18,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:00:18,741 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 13:00:18,743 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 13:00:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:19,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 13:00:19,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:00:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 13:00:19,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:00:19,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486523612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:00:19,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:00:19,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2021-11-07 13:00:19,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697965273] [2021-11-07 13:00:19,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:00:19,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 13:00:19,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:00:19,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 13:00:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 13:00:19,412 INFO L87 Difference]: Start difference. First operand 12471 states and 16954 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 13:00:22,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:00:22,910 INFO L93 Difference]: Finished difference Result 46345 states and 62957 transitions. [2021-11-07 13:00:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 13:00:22,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 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 128 [2021-11-07 13:00:22,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:00:22,979 INFO L225 Difference]: With dead ends: 46345 [2021-11-07 13:00:22,979 INFO L226 Difference]: Without dead ends: 37964 [2021-11-07 13:00:23,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 161.18ms TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-11-07 13:00:23,003 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 3276 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3276 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.61ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.84ms IncrementalHoareTripleChecker+Time [2021-11-07 13:00:23,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3276 Valid, 4493 Invalid, 92 Unknown, 0 Unchecked, 6.61ms Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 79.84ms Time] [2021-11-07 13:00:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37964 states. [2021-11-07 13:00:24,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37964 to 12499. [2021-11-07 13:00:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12499 states, 12497 states have (on average 1.3569656717612226) internal successors, (16958), 12498 states have internal predecessors, (16958), 0 states have call successors, (0), 0 states 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 13:00:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12499 states to 12499 states and 16958 transitions. [2021-11-07 13:00:24,397 INFO L78 Accepts]: Start accepts. Automaton has 12499 states and 16958 transitions. Word has length 128 [2021-11-07 13:00:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:00:24,397 INFO L470 AbstractCegarLoop]: Abstraction has 12499 states and 16958 transitions. [2021-11-07 13:00:24,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 13:00:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 12499 states and 16958 transitions. [2021-11-07 13:00:24,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 13:00:24,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:00:24,405 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 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 13:00:24,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-07 13:00:24,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:00:24,612 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:00:24,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:00:24,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1251604004, now seen corresponding path program 1 times [2021-11-07 13:00:24,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:00:24,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417180928] [2021-11-07 13:00:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:24,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:00:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 13:00:24,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:00:24,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417180928] [2021-11-07 13:00:24,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417180928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:00:24,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:00:24,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:00:24,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200982471] [2021-11-07 13:00:24,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:00:24,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:00:24,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:00:24,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:00:24,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:00:24,721 INFO L87 Difference]: Start difference. First operand 12499 states and 16958 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 13:00:25,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:00:25,933 INFO L93 Difference]: Finished difference Result 20985 states and 28499 transitions. [2021-11-07 13:00:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:00:25,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 144 [2021-11-07 13:00:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:00:25,954 INFO L225 Difference]: With dead ends: 20985 [2021-11-07 13:00:25,955 INFO L226 Difference]: Without dead ends: 12576 [2021-11-07 13:00:25,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:00:25,965 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 308 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.34ms IncrementalHoareTripleChecker+Time [2021-11-07 13:00:25,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 839 Invalid, 1 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.34ms Time] [2021-11-07 13:00:25,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12576 states. [2021-11-07 13:00:27,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12576 to 12433. [2021-11-07 13:00:27,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12433 states, 12431 states have (on average 1.3535516048588208) internal successors, (16826), 12432 states have internal predecessors, (16826), 0 states have call successors, (0), 0 states 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 13:00:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12433 states to 12433 states and 16826 transitions. [2021-11-07 13:00:27,215 INFO L78 Accepts]: Start accepts. Automaton has 12433 states and 16826 transitions. Word has length 144 [2021-11-07 13:00:27,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:00:27,215 INFO L470 AbstractCegarLoop]: Abstraction has 12433 states and 16826 transitions. [2021-11-07 13:00:27,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 13:00:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 12433 states and 16826 transitions. [2021-11-07 13:00:27,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 13:00:27,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:00:27,223 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 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 13:00:27,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 13:00:27,223 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:00:27,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:00:27,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1644821028, now seen corresponding path program 1 times [2021-11-07 13:00:27,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:00:27,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619312281] [2021-11-07 13:00:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:27,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:00:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-07 13:00:27,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:00:27,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619312281] [2021-11-07 13:00:27,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619312281] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:00:27,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327326128] [2021-11-07 13:00:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:27,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:00:27,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:00:27,316 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 13:00:27,317 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 13:00:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:27,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-07 13:00:27,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:00:28,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 13:00:28,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2021-11-07 13:00:28,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-07 13:00:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:00:28,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:00:28,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327326128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:00:28,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:00:28,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [4] total 20 [2021-11-07 13:00:28,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72762383] [2021-11-07 13:00:28,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:00:28,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 13:00:28,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:00:28,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 13:00:28,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-11-07 13:00:28,561 INFO L87 Difference]: Start difference. First operand 12433 states and 16826 transitions. Second operand has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:00:47,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:00:47,784 INFO L93 Difference]: Finished difference Result 140911 states and 198912 transitions. [2021-11-07 13:00:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2021-11-07 13:00:47,784 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-07 13:00:47,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:00:48,030 INFO L225 Difference]: With dead ends: 140911 [2021-11-07 13:00:48,031 INFO L226 Difference]: Without dead ends: 129609 [2021-11-07 13:00:48,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19812 ImplicationChecksByTransitivity, 5750.74ms TimeCoverageRelationStatistics Valid=6831, Invalid=41789, Unknown=0, NotChecked=0, Total=48620 [2021-11-07 13:00:48,073 INFO L933 BasicCegarLoop]: 1273 mSDtfsCounter, 10790 mSDsluCounter, 11005 mSDsCounter, 0 mSdLazyCounter, 2375 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1575.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10790 SdHoareTripleChecker+Valid, 12278 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.80ms SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1831.87ms IncrementalHoareTripleChecker+Time [2021-11-07 13:00:48,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10790 Valid, 12278 Invalid, 2586 Unknown, 0 Unchecked, 30.80ms Time], IncrementalHoareTripleChecker [211 Valid, 2375 Invalid, 0 Unknown, 0 Unchecked, 1831.87ms Time] [2021-11-07 13:00:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129609 states. [2021-11-07 13:00:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129609 to 23464. [2021-11-07 13:00:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23464 states, 23462 states have (on average 1.3588781860028982) internal successors, (31882), 23463 states have internal predecessors, (31882), 0 states have call successors, (0), 0 states 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 13:00:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23464 states to 23464 states and 31882 transitions. [2021-11-07 13:00:51,704 INFO L78 Accepts]: Start accepts. Automaton has 23464 states and 31882 transitions. Word has length 144 [2021-11-07 13:00:51,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:00:51,704 INFO L470 AbstractCegarLoop]: Abstraction has 23464 states and 31882 transitions. [2021-11-07 13:00:51,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.944444444444445) internal successors, (143), 18 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 13:00:51,704 INFO L276 IsEmpty]: Start isEmpty. Operand 23464 states and 31882 transitions. [2021-11-07 13:00:51,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 13:00:51,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:00:51,716 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 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 13:00:51,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 13:00:51,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-07 13:00:51,916 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:00:51,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:00:51,917 INFO L85 PathProgramCache]: Analyzing trace with hash -514074078, now seen corresponding path program 1 times [2021-11-07 13:00:51,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:00:51,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511758273] [2021-11-07 13:00:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:51,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:00:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 13:00:51,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:00:51,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511758273] [2021-11-07 13:00:51,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511758273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:00:51,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:00:51,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:00:51,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286133638] [2021-11-07 13:00:51,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:00:51,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:00:51,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:00:51,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:00:51,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:00:51,970 INFO L87 Difference]: Start difference. First operand 23464 states and 31882 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 13:00:53,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:00:53,671 INFO L93 Difference]: Finished difference Result 37069 states and 50533 transitions. [2021-11-07 13:00:53,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:00:53,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 144 [2021-11-07 13:00:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:00:53,688 INFO L225 Difference]: With dead ends: 37069 [2021-11-07 13:00:53,688 INFO L226 Difference]: Without dead ends: 13148 [2021-11-07 13:00:53,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:00:53,706 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 267 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.35ms IncrementalHoareTripleChecker+Time [2021-11-07 13:00:53,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 724 Invalid, 36 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 69.35ms Time] [2021-11-07 13:00:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13148 states. [2021-11-07 13:00:55,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13148 to 11247. [2021-11-07 13:00:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11247 states, 11245 states have (on average 1.350022232103157) internal successors, (15181), 11246 states have internal predecessors, (15181), 0 states have call successors, (0), 0 states 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 13:00:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11247 states to 11247 states and 15181 transitions. [2021-11-07 13:00:55,100 INFO L78 Accepts]: Start accepts. Automaton has 11247 states and 15181 transitions. Word has length 144 [2021-11-07 13:00:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:00:55,100 INFO L470 AbstractCegarLoop]: Abstraction has 11247 states and 15181 transitions. [2021-11-07 13:00:55,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 13:00:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 11247 states and 15181 transitions. [2021-11-07 13:00:55,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 13:00:55,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:00:55,109 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 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 13:00:55,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 13:00:55,109 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:00:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:00:55,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1368618196, now seen corresponding path program 1 times [2021-11-07 13:00:55,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:00:55,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738226402] [2021-11-07 13:00:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:55,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:00:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 13:00:55,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:00:55,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738226402] [2021-11-07 13:00:55,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738226402] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:00:55,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864455428] [2021-11-07 13:00:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:00:55,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:00:55,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:00:55,248 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 13:00:55,249 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 13:00:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:00:55,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 13:00:55,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:00:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 13:00:55,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:00:56,042 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 13:00:56,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864455428] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 13:00:56,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 13:00:56,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2021-11-07 13:00:56,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445297932] [2021-11-07 13:00:56,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:00:56,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:00:56,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:00:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:00:56,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 13:00:56,045 INFO L87 Difference]: Start difference. First operand 11247 states and 15181 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 13:00:58,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:00:58,314 INFO L93 Difference]: Finished difference Result 26057 states and 35165 transitions. [2021-11-07 13:00:58,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:00:58,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 13:00:58,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:00:58,339 INFO L225 Difference]: With dead ends: 26057 [2021-11-07 13:00:58,339 INFO L226 Difference]: Without dead ends: 18340 [2021-11-07 13:00:58,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 25.54ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 13:00:58,349 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 306 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.58ms IncrementalHoareTripleChecker+Time [2021-11-07 13:00:58,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 1314 Invalid, 14 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 48.58ms Time] [2021-11-07 13:00:58,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18340 states. [2021-11-07 13:00:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18340 to 11271. [2021-11-07 13:00:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11271 states, 11269 states have (on average 1.3503416452214039) internal successors, (15217), 11270 states have internal predecessors, (15217), 0 states have call successors, (0), 0 states 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 13:00:59,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11271 states to 11271 states and 15217 transitions. [2021-11-07 13:00:59,843 INFO L78 Accepts]: Start accepts. Automaton has 11271 states and 15217 transitions. Word has length 145 [2021-11-07 13:00:59,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:00:59,843 INFO L470 AbstractCegarLoop]: Abstraction has 11271 states and 15217 transitions. [2021-11-07 13:00:59,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 13:00:59,843 INFO L276 IsEmpty]: Start isEmpty. Operand 11271 states and 15217 transitions. [2021-11-07 13:00:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 13:00:59,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:00:59,851 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 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 13:00:59,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 13:01:00,053 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,SelfDestructingSolverStorable26 [2021-11-07 13:01:00,053 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:01:00,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:01:00,054 INFO L85 PathProgramCache]: Analyzing trace with hash -64397526, now seen corresponding path program 1 times [2021-11-07 13:01:00,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:01:00,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538128670] [2021-11-07 13:01:00,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:01:00,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:01:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:01:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 13:01:00,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:01:00,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538128670] [2021-11-07 13:01:00,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538128670] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:01:00,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590909373] [2021-11-07 13:01:00,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:01:00,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:01:00,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:01:00,154 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 13:01:00,155 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 13:01:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:01:00,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 13:01:00,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:01:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 13:01:00,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 13:01:00,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590909373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:01:00,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 13:01:00,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-07 13:01:00,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144955792] [2021-11-07 13:01:00,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:01:00,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:01:00,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:01:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:01:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 13:01:00,680 INFO L87 Difference]: Start difference. First operand 11271 states and 15217 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 13:01:03,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:01:03,057 INFO L93 Difference]: Finished difference Result 26081 states and 35189 transitions. [2021-11-07 13:01:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:01:03,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 13:01:03,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:01:03,078 INFO L225 Difference]: With dead ends: 26081 [2021-11-07 13:01:03,078 INFO L226 Difference]: Without dead ends: 18340 [2021-11-07 13:01:03,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 19.02ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:01:03,086 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 611 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.73ms IncrementalHoareTripleChecker+Time [2021-11-07 13:01:03,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 1291 Invalid, 11 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 38.73ms Time] [2021-11-07 13:01:03,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18340 states. [2021-11-07 13:01:04,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18340 to 11283. [2021-11-07 13:01:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11283 states, 11281 states have (on average 1.3489052388972609) internal successors, (15217), 11282 states have internal predecessors, (15217), 0 states have call successors, (0), 0 states 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 13:01:04,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11283 states to 11283 states and 15217 transitions. [2021-11-07 13:01:04,479 INFO L78 Accepts]: Start accepts. Automaton has 11283 states and 15217 transitions. Word has length 145 [2021-11-07 13:01:04,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:01:04,479 INFO L470 AbstractCegarLoop]: Abstraction has 11283 states and 15217 transitions. [2021-11-07 13:01:04,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 13:01:04,479 INFO L276 IsEmpty]: Start isEmpty. Operand 11283 states and 15217 transitions. [2021-11-07 13:01:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-07 13:01:04,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:01:04,489 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 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 13:01:04,510 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 13:01:04,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:01:04,700 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:01:04,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:01:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash -92044326, now seen corresponding path program 1 times [2021-11-07 13:01:04,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:01:04,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864733224] [2021-11-07 13:01:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:01:04,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:01:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:01:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 13:01:04,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:01:04,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864733224] [2021-11-07 13:01:04,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864733224] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:01:04,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272793096] [2021-11-07 13:01:04,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:01:04,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:01:04,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:01:04,892 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 13:01:04,893 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 13:01:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:01:05,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 13:01:05,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:01:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 13:01:05,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:01:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 13:01:05,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272793096] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:01:05,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:01:05,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 11 [2021-11-07 13:01:05,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483253540] [2021-11-07 13:01:05,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:01:05,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 13:01:05,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:01:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 13:01:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-07 13:01:05,858 INFO L87 Difference]: Start difference. First operand 11283 states and 15217 transitions. Second operand has 11 states, 11 states have (on average 20.636363636363637) internal successors, (227), 11 states have internal predecessors, (227), 0 states have call successors, (0), 0 states 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 13:01:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:01:07,483 INFO L93 Difference]: Finished difference Result 22285 states and 30053 transitions. [2021-11-07 13:01:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 13:01:07,484 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.636363636363637) internal successors, (227), 11 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-07 13:01:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:01:07,498 INFO L225 Difference]: With dead ends: 22285 [2021-11-07 13:01:07,498 INFO L226 Difference]: Without dead ends: 11022 [2021-11-07 13:01:07,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 112.43ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-11-07 13:01:07,509 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 614 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 4206 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.39ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.00ms IncrementalHoareTripleChecker+Time [2021-11-07 13:01:07,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 4206 Invalid, 54 Unknown, 0 Unchecked, 3.39ms Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 154.00ms Time] [2021-11-07 13:01:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2021-11-07 13:01:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 10612. [2021-11-07 13:01:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10612 states, 10610 states have (on average 1.347219604147031) internal successors, (14294), 10611 states have internal predecessors, (14294), 0 states have call successors, (0), 0 states 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 13:01:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10612 states to 10612 states and 14294 transitions. [2021-11-07 13:01:08,897 INFO L78 Accepts]: Start accepts. Automaton has 10612 states and 14294 transitions. Word has length 146 [2021-11-07 13:01:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:01:08,898 INFO L470 AbstractCegarLoop]: Abstraction has 10612 states and 14294 transitions. [2021-11-07 13:01:08,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.636363636363637) internal successors, (227), 11 states have internal predecessors, (227), 0 states have call successors, (0), 0 states 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 13:01:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 10612 states and 14294 transitions. [2021-11-07 13:01:08,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-07 13:01:08,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:01:08,905 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:01:08,929 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 13:01:09,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 13:01:09,129 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:01:09,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:01:09,130 INFO L85 PathProgramCache]: Analyzing trace with hash -10442930, now seen corresponding path program 2 times [2021-11-07 13:01:09,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:01:09,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419580432] [2021-11-07 13:01:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:01:09,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:01:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:01:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 13:01:09,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:01:09,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419580432] [2021-11-07 13:01:09,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419580432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:01:09,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854579981] [2021-11-07 13:01:09,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 13:01:09,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:01:09,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:01:09,260 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 13:01:09,275 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 13:01:09,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 13:01:09,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 13:01:09,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2028 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 13:01:09,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:01:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-07 13:01:09,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:01:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 13:01:10,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854579981] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:01:10,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:01:10,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 10] total 14 [2021-11-07 13:01:10,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629745916] [2021-11-07 13:01:10,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:01:10,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 13:01:10,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:01:10,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 13:01:10,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-07 13:01:10,261 INFO L87 Difference]: Start difference. First operand 10612 states and 14294 transitions. Second operand has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 14 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 13:01:11,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:01:11,724 INFO L93 Difference]: Finished difference Result 21205 states and 28567 transitions. [2021-11-07 13:01:11,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 13:01:11,725 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 14 states have internal predecessors, (149), 0 states have call successors, (0), 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 150 [2021-11-07 13:01:11,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:01:11,738 INFO L225 Difference]: With dead ends: 21205 [2021-11-07 13:01:11,738 INFO L226 Difference]: Without dead ends: 10614 [2021-11-07 13:01:11,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 112.49ms TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-07 13:01:11,747 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.51ms IncrementalHoareTripleChecker+Time [2021-11-07 13:01:11,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3197 Invalid, 52 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 100.51ms Time] [2021-11-07 13:01:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10614 states. [2021-11-07 13:01:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10614 to 10614. [2021-11-07 13:01:13,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10614 states, 10612 states have (on average 1.3471541650961176) internal successors, (14296), 10613 states have internal predecessors, (14296), 0 states have call successors, (0), 0 states 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 13:01:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10614 states to 10614 states and 14296 transitions. [2021-11-07 13:01:13,038 INFO L78 Accepts]: Start accepts. Automaton has 10614 states and 14296 transitions. Word has length 150 [2021-11-07 13:01:13,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:01:13,038 INFO L470 AbstractCegarLoop]: Abstraction has 10614 states and 14296 transitions. [2021-11-07 13:01:13,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 14 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 13:01:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand 10614 states and 14296 transitions. [2021-11-07 13:01:13,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 13:01:13,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:01:13,045 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 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 13:01:13,066 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 13:01:13,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:01:13,245 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:01:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:01:13,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2120069838, now seen corresponding path program 3 times [2021-11-07 13:01:13,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:01:13,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779728099] [2021-11-07 13:01:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:01:13,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:01:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:01:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-07 13:01:13,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:01:13,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779728099] [2021-11-07 13:01:13,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779728099] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:01:13,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350302407] [2021-11-07 13:01:13,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 13:01:13,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:01:13,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:01:13,421 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 13:01:13,423 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 13:01:14,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 13:01:14,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 13:01:14,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 13:01:14,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:01:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 13:01:14,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:01:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 13:01:15,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350302407] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:01:15,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:01:15,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2021-11-07 13:01:15,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194258446] [2021-11-07 13:01:15,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:01:15,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 13:01:15,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:01:15,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 13:01:15,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-07 13:01:15,050 INFO L87 Difference]: Start difference. First operand 10614 states and 14296 transitions. Second operand has 15 states, 15 states have (on average 10.4) internal successors, (156), 15 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 13:01:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:01:16,856 INFO L93 Difference]: Finished difference Result 18027 states and 24283 transitions. [2021-11-07 13:01:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 13:01:16,858 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.4) internal successors, (156), 15 states have internal predecessors, (156), 0 states have call successors, (0), 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 13:01:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:01:16,873 INFO L225 Difference]: With dead ends: 18027 [2021-11-07 13:01:16,873 INFO L226 Difference]: Without dead ends: 10946 [2021-11-07 13:01:16,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 297 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 197.42ms TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-11-07 13:01:16,881 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 615 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 279.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 4482 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 295.57ms IncrementalHoareTripleChecker+Time [2021-11-07 13:01:16,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 4482 Invalid, 74 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [14 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 295.57ms Time] [2021-11-07 13:01:16,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10946 states. [2021-11-07 13:01:18,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10946 to 10638. [2021-11-07 13:01:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10638 states, 10636 states have (on average 1.3463708160962768) internal successors, (14320), 10637 states have internal predecessors, (14320), 0 states have call successors, (0), 0 states 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 13:01:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10638 states to 10638 states and 14320 transitions. [2021-11-07 13:01:18,266 INFO L78 Accepts]: Start accepts. Automaton has 10638 states and 14320 transitions. Word has length 152 [2021-11-07 13:01:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:01:18,266 INFO L470 AbstractCegarLoop]: Abstraction has 10638 states and 14320 transitions. [2021-11-07 13:01:18,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.4) internal successors, (156), 15 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 13:01:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 10638 states and 14320 transitions. [2021-11-07 13:01:18,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-07 13:01:18,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:01:18,271 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:01:18,294 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 13:01:18,471 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,SelfDestructingSolverStorable30 [2021-11-07 13:01:18,473 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:01:18,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:01:18,473 INFO L85 PathProgramCache]: Analyzing trace with hash -138830960, now seen corresponding path program 4 times [2021-11-07 13:01:18,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:01:18,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625072717] [2021-11-07 13:01:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:01:18,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:01:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:01:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 13:01:18,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:01:18,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625072717] [2021-11-07 13:01:18,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625072717] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:01:18,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907781562] [2021-11-07 13:01:18,690 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 13:01:18,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:01:18,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:01:18,691 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 13:01:18,692 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 13:01:20,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 13:01:20,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 13:01:20,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 13:01:20,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 13:01:20,325 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 13:01:20,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 13:01:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 13:01:20,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907781562] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 13:01:20,586 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 13:01:20,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2021-11-07 13:01:20,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854258029] [2021-11-07 13:01:20,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 13:01:20,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 13:01:20,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:01:20,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 13:01:20,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-11-07 13:01:20,588 INFO L87 Difference]: Start difference. First operand 10638 states and 14320 transitions. Second operand has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 13:01:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:01:23,614 INFO L93 Difference]: Finished difference Result 18129 states and 24445 transitions. [2021-11-07 13:01:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 13:01:23,614 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 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 154 [2021-11-07 13:01:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:01:23,626 INFO L225 Difference]: With dead ends: 18129 [2021-11-07 13:01:23,627 INFO L226 Difference]: Without dead ends: 11024 [2021-11-07 13:01:23,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1020.25ms TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 13:01:23,632 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 616 mSDsluCounter, 5395 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 633.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 5968 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.43ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 666.95ms IncrementalHoareTripleChecker+Time [2021-11-07 13:01:23,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 5968 Invalid, 116 Unknown, 0 Unchecked, 4.43ms Time], IncrementalHoareTripleChecker [37 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 666.95ms Time] [2021-11-07 13:01:23,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11024 states. [2021-11-07 13:01:24,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11024 to 10722. [2021-11-07 13:01:24,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10722 states, 10720 states have (on average 1.3436567164179105) internal successors, (14404), 10721 states have internal predecessors, (14404), 0 states have call successors, (0), 0 states 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 13:01:24,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10722 states to 10722 states and 14404 transitions. [2021-11-07 13:01:24,983 INFO L78 Accepts]: Start accepts. Automaton has 10722 states and 14404 transitions. Word has length 154 [2021-11-07 13:01:24,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:01:24,983 INFO L470 AbstractCegarLoop]: Abstraction has 10722 states and 14404 transitions. [2021-11-07 13:01:24,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.318181818181818) internal successors, (161), 22 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 13:01:24,983 INFO L276 IsEmpty]: Start isEmpty. Operand 10722 states and 14404 transitions. [2021-11-07 13:01:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 13:01:24,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:01:24,989 INFO L514 BasicCegarLoop]: trace histogram [12, 5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:01:25,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 13:01:25,190 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,SelfDestructingSolverStorable31 [2021-11-07 13:01:25,192 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 13:01:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:01:25,193 INFO L85 PathProgramCache]: Analyzing trace with hash -774873992, now seen corresponding path program 5 times [2021-11-07 13:01:25,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:01:25,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083508438] [2021-11-07 13:01:25,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:01:25,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:01:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:01:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 78 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 13:01:25,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:01:25,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083508438] [2021-11-07 13:01:25,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083508438] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 13:01:25,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314991132] [2021-11-07 13:01:25,534 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 13:01:25,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 13:01:25,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:01:25,535 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 13:01:25,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15