./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.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 c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:20:44,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:20:44,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:20:44,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:20:44,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:20:44,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:20:44,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:20:44,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:20:44,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:20:44,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:20:44,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:20:44,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:20:44,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:20:44,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:20:44,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:20:44,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:20:44,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:20:44,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:20:44,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:20:45,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:20:45,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:20:45,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:20:45,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:20:45,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:20:45,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:20:45,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:20:45,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:20:45,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:20:45,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:20:45,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:20:45,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:20:45,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:20:45,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:20:45,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:20:45,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:20:45,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:20:45,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:20:45,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:20:45,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:20:45,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:20:45,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:20:45,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:20:45,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:20:45,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:20:45,052 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:20:45,052 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:20:45,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:20:45,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:20:45,054 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:20:45,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:20:45,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:20:45,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:20:45,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:20:45,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:20:45,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:20:45,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:20:45,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:20:45,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:20:45,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:20:45,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:20:45,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:20:45,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:20:45,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:20:45,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:20:45,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:20:45,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:20:45,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:20:45,058 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:20:45,058 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:20:45,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:20:45,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:20:45,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 [2021-11-06 20:20:45,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:20:45,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:20:45,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:20:45,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:20:45,298 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:20:45,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-06 20:20:45,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c697235/5eca9719b15b437c997778eb04a8880c/FLAG6dfcf519a [2021-11-06 20:20:46,066 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:20:46,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-06 20:20:46,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c697235/5eca9719b15b437c997778eb04a8880c/FLAG6dfcf519a [2021-11-06 20:20:46,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c697235/5eca9719b15b437c997778eb04a8880c [2021-11-06 20:20:46,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:20:46,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:20:46,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:20:46,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:20:46,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:20:46,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:20:46" (1/1) ... [2021-11-06 20:20:46,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e05afe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:46, skipping insertion in model container [2021-11-06 20:20:46,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:20:46" (1/1) ... [2021-11-06 20:20:46,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:20:46,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:20:49,311 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2021-11-06 20:20:49,314 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2021-11-06 20:20:49,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:20:49,357 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:20:49,703 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2021-11-06 20:20:49,703 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-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2021-11-06 20:20:49,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:20:49,929 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:20:49,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49 WrapperNode [2021-11-06 20:20:49,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:20:49,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:20:49,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:20:49,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:20:49,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49" (1/1) ... [2021-11-06 20:20:50,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49" (1/1) ... [2021-11-06 20:20:50,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:20:50,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:20:50,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:20:50,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:20:50,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49" (1/1) ... [2021-11-06 20:20:50,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49" (1/1) ... [2021-11-06 20:20:50,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49" (1/1) ... [2021-11-06 20:20:50,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49" (1/1) ... [2021-11-06 20:20:50,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49" (1/1) ... [2021-11-06 20:20:50,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49" (1/1) ... [2021-11-06 20:20:51,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49" (1/1) ... [2021-11-06 20:20:51,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:20:51,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:20:51,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:20:51,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:20:51,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49" (1/1) ... [2021-11-06 20:20:51,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:20:51,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:20:51,272 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) [2021-11-06 20:20:51,292 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 [2021-11-06 20:20:51,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:20:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:20:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:20:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:20:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:20:51,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:20:51,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:20:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:20:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:20:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:20:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:20:51,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:21:34,107 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:21:34,108 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:21:34,108 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:21:34,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:21:34,129 INFO L299 CfgBuilder]: Removed 3506 assume(true) statements. [2021-11-06 20:21:34,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:21:34 BoogieIcfgContainer [2021-11-06 20:21:34,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:21:34,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:21:34,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:21:34,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:21:34,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:20:46" (1/3) ... [2021-11-06 20:21:34,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8f73b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:21:34, skipping insertion in model container [2021-11-06 20:21:34,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:20:49" (2/3) ... [2021-11-06 20:21:34,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8f73b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:21:34, skipping insertion in model container [2021-11-06 20:21:34,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:21:34" (3/3) ... [2021-11-06 20:21:34,141 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-06 20:21:34,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:21:34,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-06 20:21:34,192 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:21:34,197 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 [2021-11-06 20:21:34,197 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-06 20:21:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 3071 states, 3059 states have (on average 1.3481529911735861) internal successors, (4124), 3070 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-06 20:21:34,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:34,279 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:34,279 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:21:34,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:34,284 INFO L85 PathProgramCache]: Analyzing trace with hash 889027765, now seen corresponding path program 1 times [2021-11-06 20:21:34,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:34,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114695669] [2021-11-06 20:21:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:34,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:21:35,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:35,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114695669] [2021-11-06 20:21:35,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114695669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:35,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:35,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:35,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865037195] [2021-11-06 20:21:35,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:21:35,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:21:35,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:35,144 INFO L87 Difference]: Start difference. First operand has 3071 states, 3059 states have (on average 1.3481529911735861) internal successors, (4124), 3070 states have internal predecessors, (4124), 0 states have call successors, (0), 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 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:37,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:37,730 INFO L93 Difference]: Finished difference Result 8241 states and 11065 transitions. [2021-11-06 20:21:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:21:37,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-11-06 20:21:37,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:37,762 INFO L225 Difference]: With dead ends: 8241 [2021-11-06 20:21:37,763 INFO L226 Difference]: Without dead ends: 4970 [2021-11-06 20:21:37,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2021-11-06 20:21:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 4948. [2021-11-06 20:21:37,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4936 states have (on average 1.2870745542949757) internal successors, (6353), 4947 states have internal predecessors, (6353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:37,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 6353 transitions. [2021-11-06 20:21:37,966 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 6353 transitions. Word has length 155 [2021-11-06 20:21:37,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:21:37,968 INFO L470 AbstractCegarLoop]: Abstraction has 4948 states and 6353 transitions. [2021-11-06 20:21:37,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:37,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 6353 transitions. [2021-11-06 20:21:37,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 20:21:37,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:37,980 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:37,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:21:37,980 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:21:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1747966377, now seen corresponding path program 1 times [2021-11-06 20:21:37,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:37,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505903289] [2021-11-06 20:21:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:37,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:21:38,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:38,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505903289] [2021-11-06 20:21:38,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505903289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:38,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:38,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:38,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678156982] [2021-11-06 20:21:38,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:21:38,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:38,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:21:38,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:38,332 INFO L87 Difference]: Start difference. First operand 4948 states and 6353 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 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) [2021-11-06 20:21:40,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:40,851 INFO L93 Difference]: Finished difference Result 13984 states and 18005 transitions. [2021-11-06 20:21:40,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:21:40,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 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 156 [2021-11-06 20:21:40,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:40,886 INFO L225 Difference]: With dead ends: 13984 [2021-11-06 20:21:40,887 INFO L226 Difference]: Without dead ends: 9272 [2021-11-06 20:21:40,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9272 states. [2021-11-06 20:21:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9272 to 9244. [2021-11-06 20:21:41,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9244 states, 9232 states have (on average 1.2878032928942809) internal successors, (11889), 9243 states have internal predecessors, (11889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9244 states to 9244 states and 11889 transitions. [2021-11-06 20:21:41,225 INFO L78 Accepts]: Start accepts. Automaton has 9244 states and 11889 transitions. Word has length 156 [2021-11-06 20:21:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:21:41,225 INFO L470 AbstractCegarLoop]: Abstraction has 9244 states and 11889 transitions. [2021-11-06 20:21:41,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 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) [2021-11-06 20:21:41,226 INFO L276 IsEmpty]: Start isEmpty. Operand 9244 states and 11889 transitions. [2021-11-06 20:21:41,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-06 20:21:41,237 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:41,237 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:41,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:21:41,238 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:21:41,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1860394271, now seen corresponding path program 1 times [2021-11-06 20:21:41,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:41,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017581942] [2021-11-06 20:21:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:41,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:21:41,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:41,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017581942] [2021-11-06 20:21:41,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017581942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:41,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:41,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:41,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745239802] [2021-11-06 20:21:41,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:21:41,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:41,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:21:41,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:41,508 INFO L87 Difference]: Start difference. First operand 9244 states and 11889 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 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) [2021-11-06 20:21:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:44,256 INFO L93 Difference]: Finished difference Result 26494 states and 34097 transitions. [2021-11-06 20:21:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:21:44,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 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 157 [2021-11-06 20:21:44,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:44,337 INFO L225 Difference]: With dead ends: 26494 [2021-11-06 20:21:44,338 INFO L226 Difference]: Without dead ends: 17486 [2021-11-06 20:21:44,359 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17486 states. [2021-11-06 20:21:44,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17486 to 17456. [2021-11-06 20:21:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17456 states, 17444 states have (on average 1.2860009172208209) internal successors, (22433), 17455 states have internal predecessors, (22433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:44,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17456 states to 17456 states and 22433 transitions. [2021-11-06 20:21:44,841 INFO L78 Accepts]: Start accepts. Automaton has 17456 states and 22433 transitions. Word has length 157 [2021-11-06 20:21:44,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:21:44,842 INFO L470 AbstractCegarLoop]: Abstraction has 17456 states and 22433 transitions. [2021-11-06 20:21:44,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 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) [2021-11-06 20:21:44,843 INFO L276 IsEmpty]: Start isEmpty. Operand 17456 states and 22433 transitions. [2021-11-06 20:21:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-06 20:21:44,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:44,863 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:44,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:21:44,864 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:21:44,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:44,865 INFO L85 PathProgramCache]: Analyzing trace with hash -627285622, now seen corresponding path program 1 times [2021-11-06 20:21:44,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:44,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827752693] [2021-11-06 20:21:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:44,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:21:45,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:45,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827752693] [2021-11-06 20:21:45,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827752693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:45,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:45,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:45,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382428293] [2021-11-06 20:21:45,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:21:45,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:45,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:21:45,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:45,249 INFO L87 Difference]: Start difference. First operand 17456 states and 22433 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:47,867 INFO L93 Difference]: Finished difference Result 36436 states and 46827 transitions. [2021-11-06 20:21:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:21:47,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2021-11-06 20:21:47,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:47,917 INFO L225 Difference]: With dead ends: 36436 [2021-11-06 20:21:47,917 INFO L226 Difference]: Without dead ends: 19216 [2021-11-06 20:21:47,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19216 states. [2021-11-06 20:21:48,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19216 to 19208. [2021-11-06 20:21:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19208 states, 19196 states have (on average 1.2842258803917483) internal successors, (24652), 19207 states have internal predecessors, (24652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:48,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19208 states to 19208 states and 24652 transitions. [2021-11-06 20:21:48,400 INFO L78 Accepts]: Start accepts. Automaton has 19208 states and 24652 transitions. Word has length 169 [2021-11-06 20:21:48,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:21:48,400 INFO L470 AbstractCegarLoop]: Abstraction has 19208 states and 24652 transitions. [2021-11-06 20:21:48,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 19208 states and 24652 transitions. [2021-11-06 20:21:48,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-06 20:21:48,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:48,415 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:48,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:21:48,416 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:21:48,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1228263964, now seen corresponding path program 1 times [2021-11-06 20:21:48,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:48,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048398693] [2021-11-06 20:21:48,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:48,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:21:48,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:48,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048398693] [2021-11-06 20:21:48,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048398693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:48,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:48,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:48,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446507196] [2021-11-06 20:21:48,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:21:48,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:48,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:21:48,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:48,708 INFO L87 Difference]: Start difference. First operand 19208 states and 24652 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:51,610 INFO L93 Difference]: Finished difference Result 46888 states and 60314 transitions. [2021-11-06 20:21:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:21:51,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2021-11-06 20:21:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:51,699 INFO L225 Difference]: With dead ends: 46888 [2021-11-06 20:21:51,699 INFO L226 Difference]: Without dead ends: 27916 [2021-11-06 20:21:51,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27916 states. [2021-11-06 20:21:52,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27916 to 27868. [2021-11-06 20:21:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27868 states, 27856 states have (on average 1.2850732337736932) internal successors, (35797), 27867 states have internal predecessors, (35797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27868 states to 27868 states and 35797 transitions. [2021-11-06 20:21:52,376 INFO L78 Accepts]: Start accepts. Automaton has 27868 states and 35797 transitions. Word has length 169 [2021-11-06 20:21:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:21:52,376 INFO L470 AbstractCegarLoop]: Abstraction has 27868 states and 35797 transitions. [2021-11-06 20:21:52,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 27868 states and 35797 transitions. [2021-11-06 20:21:52,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-06 20:21:52,409 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:52,409 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:52,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:21:52,410 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:21:52,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:52,411 INFO L85 PathProgramCache]: Analyzing trace with hash -102929217, now seen corresponding path program 1 times [2021-11-06 20:21:52,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:52,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22735630] [2021-11-06 20:21:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:52,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:21:52,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:52,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22735630] [2021-11-06 20:21:52,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22735630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:52,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:52,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:52,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096498397] [2021-11-06 20:21:52,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:21:52,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:52,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:21:52,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:52,661 INFO L87 Difference]: Start difference. First operand 27868 states and 35797 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:21:55,735 INFO L93 Difference]: Finished difference Result 80988 states and 104221 transitions. [2021-11-06 20:21:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:21:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2021-11-06 20:21:55,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:21:55,885 INFO L225 Difference]: With dead ends: 80988 [2021-11-06 20:21:55,886 INFO L226 Difference]: Without dead ends: 54164 [2021-11-06 20:21:55,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54164 states. [2021-11-06 20:21:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54164 to 54140. [2021-11-06 20:21:57,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54140 states, 54128 states have (on average 1.286376736624298) internal successors, (69629), 54139 states have internal predecessors, (69629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54140 states to 54140 states and 69629 transitions. [2021-11-06 20:21:57,184 INFO L78 Accepts]: Start accepts. Automaton has 54140 states and 69629 transitions. Word has length 192 [2021-11-06 20:21:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:21:57,185 INFO L470 AbstractCegarLoop]: Abstraction has 54140 states and 69629 transitions. [2021-11-06 20:21:57,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:21:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 54140 states and 69629 transitions. [2021-11-06 20:21:57,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-06 20:21:57,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:21:57,227 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:21:57,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 20:21:57,227 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:21:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:21:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash 137310529, now seen corresponding path program 1 times [2021-11-06 20:21:57,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:21:57,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670218441] [2021-11-06 20:21:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:21:57,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:21:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:21:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:21:57,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:21:57,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670218441] [2021-11-06 20:21:57,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670218441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:21:57,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:21:57,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:21:57,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84048495] [2021-11-06 20:21:57,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:21:57,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:21:57,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:21:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:21:57,478 INFO L87 Difference]: Start difference. First operand 54140 states and 69629 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:01,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:22:01,144 INFO L93 Difference]: Finished difference Result 133548 states and 171901 transitions. [2021-11-06 20:22:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:22:01,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2021-11-06 20:22:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:22:01,350 INFO L225 Difference]: With dead ends: 133548 [2021-11-06 20:22:01,351 INFO L226 Difference]: Without dead ends: 79537 [2021-11-06 20:22:01,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79537 states. [2021-11-06 20:22:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79537 to 79513. [2021-11-06 20:22:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79513 states, 79501 states have (on average 1.2874051898718255) internal successors, (102350), 79512 states have internal predecessors, (102350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79513 states to 79513 states and 102350 transitions. [2021-11-06 20:22:03,325 INFO L78 Accepts]: Start accepts. Automaton has 79513 states and 102350 transitions. Word has length 192 [2021-11-06 20:22:03,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:22:03,326 INFO L470 AbstractCegarLoop]: Abstraction has 79513 states and 102350 transitions. [2021-11-06 20:22:03,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:03,326 INFO L276 IsEmpty]: Start isEmpty. Operand 79513 states and 102350 transitions. [2021-11-06 20:22:03,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-06 20:22:03,355 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:22:03,355 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:22:03,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 20:22:03,356 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:22:03,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:22:03,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1795083664, now seen corresponding path program 1 times [2021-11-06 20:22:03,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:22:03,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304692551] [2021-11-06 20:22:03,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:22:03,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:22:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:22:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:22:03,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:22:03,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304692551] [2021-11-06 20:22:03,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304692551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:22:03,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:22:03,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:22:03,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774643726] [2021-11-06 20:22:03,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:22:03,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:22:03,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:22:03,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:03,794 INFO L87 Difference]: Start difference. First operand 79513 states and 102350 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:22:07,778 INFO L93 Difference]: Finished difference Result 186282 states and 240054 transitions. [2021-11-06 20:22:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:22:07,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2021-11-06 20:22:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:22:08,125 INFO L225 Difference]: With dead ends: 186282 [2021-11-06 20:22:08,126 INFO L226 Difference]: Without dead ends: 107813 [2021-11-06 20:22:08,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107813 states. [2021-11-06 20:22:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107813 to 107765. [2021-11-06 20:22:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107765 states, 107753 states have (on average 1.28733306729279) internal successors, (138714), 107764 states have internal predecessors, (138714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107765 states to 107765 states and 138714 transitions. [2021-11-06 20:22:10,669 INFO L78 Accepts]: Start accepts. Automaton has 107765 states and 138714 transitions. Word has length 205 [2021-11-06 20:22:10,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:22:10,671 INFO L470 AbstractCegarLoop]: Abstraction has 107765 states and 138714 transitions. [2021-11-06 20:22:10,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 107765 states and 138714 transitions. [2021-11-06 20:22:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-06 20:22:10,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:22:10,707 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:22:10,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 20:22:10,709 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:22:10,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:22:10,710 INFO L85 PathProgramCache]: Analyzing trace with hash -568426472, now seen corresponding path program 1 times [2021-11-06 20:22:10,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:22:10,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939210935] [2021-11-06 20:22:10,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:22:10,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:22:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:22:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 20:22:10,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:22:10,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939210935] [2021-11-06 20:22:10,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939210935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:22:10,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:22:10,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:22:10,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142508682] [2021-11-06 20:22:10,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:22:10,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:22:10,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:22:10,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:10,963 INFO L87 Difference]: Start difference. First operand 107765 states and 138714 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:15,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:22:15,611 INFO L93 Difference]: Finished difference Result 250062 states and 321967 transitions. [2021-11-06 20:22:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:22:15,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 206 [2021-11-06 20:22:15,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:22:15,908 INFO L225 Difference]: With dead ends: 250062 [2021-11-06 20:22:15,908 INFO L226 Difference]: Without dead ends: 142466 [2021-11-06 20:22:16,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:16,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142466 states. [2021-11-06 20:22:18,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142466 to 107765. [2021-11-06 20:22:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107765 states, 107753 states have (on average 1.28732378680872) internal successors, (138713), 107764 states have internal predecessors, (138713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107765 states to 107765 states and 138713 transitions. [2021-11-06 20:22:18,737 INFO L78 Accepts]: Start accepts. Automaton has 107765 states and 138713 transitions. Word has length 206 [2021-11-06 20:22:18,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:22:18,738 INFO L470 AbstractCegarLoop]: Abstraction has 107765 states and 138713 transitions. [2021-11-06 20:22:18,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand 107765 states and 138713 transitions. [2021-11-06 20:22:18,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-06 20:22:18,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:22:18,771 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:22:18,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 20:22:18,771 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:22:18,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:22:18,772 INFO L85 PathProgramCache]: Analyzing trace with hash -328186726, now seen corresponding path program 1 times [2021-11-06 20:22:18,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:22:18,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660469753] [2021-11-06 20:22:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:22:18,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:22:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:22:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-06 20:22:19,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:22:19,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660469753] [2021-11-06 20:22:19,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660469753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:22:19,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:22:19,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:22:19,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159986799] [2021-11-06 20:22:19,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:22:19,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:22:19,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:22:19,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:19,011 INFO L87 Difference]: Start difference. First operand 107765 states and 138713 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:24,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:22:24,064 INFO L93 Difference]: Finished difference Result 261952 states and 336711 transitions. [2021-11-06 20:22:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:22:24,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 206 [2021-11-06 20:22:24,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:22:24,550 INFO L225 Difference]: With dead ends: 261952 [2021-11-06 20:22:24,550 INFO L226 Difference]: Without dead ends: 155231 [2021-11-06 20:22:24,686 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:24,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155231 states. [2021-11-06 20:22:27,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155231 to 155197. [2021-11-06 20:22:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155197 states, 155185 states have (on average 1.2829397171118342) internal successors, (199093), 155196 states have internal predecessors, (199093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155197 states to 155197 states and 199093 transitions. [2021-11-06 20:22:28,329 INFO L78 Accepts]: Start accepts. Automaton has 155197 states and 199093 transitions. Word has length 206 [2021-11-06 20:22:28,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:22:28,330 INFO L470 AbstractCegarLoop]: Abstraction has 155197 states and 199093 transitions. [2021-11-06 20:22:28,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:28,330 INFO L276 IsEmpty]: Start isEmpty. Operand 155197 states and 199093 transitions. [2021-11-06 20:22:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-06 20:22:28,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:22:28,371 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:22:28,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 20:22:28,372 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-06 20:22:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:22:28,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1625944476, now seen corresponding path program 1 times [2021-11-06 20:22:28,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:22:28,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163742369] [2021-11-06 20:22:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:22:28,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:22:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:22:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-06 20:22:28,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:22:28,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163742369] [2021-11-06 20:22:28,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163742369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:22:28,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:22:28,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:22:28,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127072557] [2021-11-06 20:22:28,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:22:28,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:22:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:22:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:28,652 INFO L87 Difference]: Start difference. First operand 155197 states and 199093 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:22:35,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:22:35,531 INFO L93 Difference]: Finished difference Result 381658 states and 489379 transitions. [2021-11-06 20:22:35,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:22:35,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 207 [2021-11-06 20:22:35,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:22:36,119 INFO L225 Difference]: With dead ends: 381658 [2021-11-06 20:22:36,119 INFO L226 Difference]: Without dead ends: 227505 [2021-11-06 20:22:36,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:22:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227505 states.