./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.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-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.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 c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:14:57,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:14:57,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:14:57,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:14:57,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:14:57,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:14:57,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:14:57,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:14:57,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:14:57,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:14:57,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:14:57,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:14:57,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:14:57,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:14:57,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:14:57,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:14:57,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:14:57,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:14:57,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:14:57,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:14:57,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:14:57,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:14:57,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:14:57,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:14:57,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:14:57,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:14:57,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:14:57,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:14:57,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:14:57,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:14:57,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:14:57,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:14:57,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:14:57,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:14:57,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:14:57,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:14:57,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:14:57,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:14:57,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:14:57,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:14:57,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:14:57,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:14:57,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:14:57,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:14:57,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:14:57,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:14:57,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:14:57,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:14:57,137 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:14:57,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:14:57,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:14:57,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:14:57,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:14:57,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:14:57,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:14:57,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:14:57,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:14:57,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:14:57,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:14:57,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:14:57,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:14:57,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:14:57,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:14:57,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:14:57,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:14:57,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:14:57,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:14:57,140 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:14:57,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:14:57,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:14:57,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:14:57,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d [2021-11-06 18:14:57,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:14:57,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:14:57,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:14:57,331 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:14:57,331 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:14:57,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-06 18:14:57,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6103fec0/88162e9f5bb046579721cc260035e99b/FLAG7ddff0634 [2021-11-06 18:14:58,000 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:14:58,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-06 18:14:58,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6103fec0/88162e9f5bb046579721cc260035e99b/FLAG7ddff0634 [2021-11-06 18:14:58,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6103fec0/88162e9f5bb046579721cc260035e99b [2021-11-06 18:14:58,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:14:58,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:14:58,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:14:58,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:14:58,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:14:58,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:14:58" (1/1) ... [2021-11-06 18:14:58,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@300489dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:14:58, skipping insertion in model container [2021-11-06 18:14:58,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:14:58" (1/1) ... [2021-11-06 18:14:58,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:14:58,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:14:59,963 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-06 18:14:59,966 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-06 18:14:59,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:15:00,016 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:15:00,257 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-06 18:15:00,258 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-06 18:15:00,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:15:00,348 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:15:00,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00 WrapperNode [2021-11-06 18:15:00,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:15:00,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:15:00,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:15:00,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:15:00,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00" (1/1) ... [2021-11-06 18:15:00,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00" (1/1) ... [2021-11-06 18:15:04,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:15:04,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:15:04,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:15:04,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:15:04,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00" (1/1) ... [2021-11-06 18:15:04,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00" (1/1) ... [2021-11-06 18:15:04,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00" (1/1) ... [2021-11-06 18:15:04,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00" (1/1) ... [2021-11-06 18:15:05,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00" (1/1) ... [2021-11-06 18:15:06,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00" (1/1) ... [2021-11-06 18:15:06,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00" (1/1) ... [2021-11-06 18:15:06,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:15:06,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:15:06,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:15:06,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:15:06,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00" (1/1) ... [2021-11-06 18:15:06,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:15:06,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:15:06,978 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 18:15:06,987 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 18:15:07,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:15:07,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:15:07,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:15:07,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:15:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:15:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:15:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:15:07,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:15:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:15:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:15:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:15:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:15:07,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:15:07,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:15:07,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:17:51,623 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-06 18:17:51,625 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:17:51,625 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:17:51,628 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:17:51,710 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:17:51,710 INFO L299 CfgBuilder]: Removed 28753 assume(true) statements. [2021-11-06 18:17:51,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:17:51 BoogieIcfgContainer [2021-11-06 18:17:51,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:17:51,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:17:51,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:17:51,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:17:51,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:14:58" (1/3) ... [2021-11-06 18:17:51,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecfc3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:17:51, skipping insertion in model container [2021-11-06 18:17:51,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:15:00" (2/3) ... [2021-11-06 18:17:51,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecfc3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:17:51, skipping insertion in model container [2021-11-06 18:17:51,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:17:51" (3/3) ... [2021-11-06 18:17:51,735 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-06 18:17:51,739 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:17:51,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-06 18:17:51,834 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:17:51,839 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 18:17:51,839 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-06 18:17:52,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 22035 states, 22027 states have (on average 1.3680937031824578) internal successors, (30135), 22034 states have internal predecessors, (30135), 0 states have call successors, (0), 0 states 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 18:17:52,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 18:17:52,060 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:52,060 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] [2021-11-06 18:17:52,061 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:17:52,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:52,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1484303944, now seen corresponding path program 1 times [2021-11-06 18:17:52,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:52,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19092335] [2021-11-06 18:17:52,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:52,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:52,612 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 18:17:52,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:52,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19092335] [2021-11-06 18:17:52,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19092335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:52,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:52,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:52,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271505201] [2021-11-06 18:17:52,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:17:52,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:52,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:17:52,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:17:52,668 INFO L87 Difference]: Start difference. First operand has 22035 states, 22027 states have (on average 1.3680937031824578) internal successors, (30135), 22034 states have internal predecessors, (30135), 0 states have call successors, (0), 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 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:56,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:17:56,029 INFO L93 Difference]: Finished difference Result 54006 states and 73816 transitions. [2021-11-06 18:17:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:17:56,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-06 18:17:56,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:17:56,170 INFO L225 Difference]: With dead ends: 54006 [2021-11-06 18:17:56,170 INFO L226 Difference]: Without dead ends: 31727 [2021-11-06 18:17:56,227 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 18:17:56,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31727 states. [2021-11-06 18:17:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31727 to 31435. [2021-11-06 18:17:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31435 states, 31427 states have (on average 1.3623953924968977) internal successors, (42816), 31434 states have internal predecessors, (42816), 0 states have call successors, (0), 0 states 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 18:17:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31435 states to 31435 states and 42816 transitions. [2021-11-06 18:17:57,397 INFO L78 Accepts]: Start accepts. Automaton has 31435 states and 42816 transitions. Word has length 58 [2021-11-06 18:17:57,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:17:57,398 INFO L470 AbstractCegarLoop]: Abstraction has 31435 states and 42816 transitions. [2021-11-06 18:17:57,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:17:57,399 INFO L276 IsEmpty]: Start isEmpty. Operand 31435 states and 42816 transitions. [2021-11-06 18:17:57,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 18:17:57,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:17:57,408 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:57,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:17:57,409 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:17:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:17:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash 707108999, now seen corresponding path program 1 times [2021-11-06 18:17:57,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:17:57,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975249902] [2021-11-06 18:17:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:17:57,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:17:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:17:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:17:57,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:17:57,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975249902] [2021-11-06 18:17:57,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975249902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:17:57,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:17:57,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:17:57,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501437507] [2021-11-06 18:17:57,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:17:57,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:17:57,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:17:57,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:17:57,606 INFO L87 Difference]: Start difference. First operand 31435 states and 42816 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 18:18:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:01,131 INFO L93 Difference]: Finished difference Result 83497 states and 113890 transitions. [2021-11-06 18:18:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:01,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 18:18:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:01,453 INFO L225 Difference]: With dead ends: 83497 [2021-11-06 18:18:01,454 INFO L226 Difference]: Without dead ends: 52106 [2021-11-06 18:18:01,516 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 18:18:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52106 states. [2021-11-06 18:18:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52106 to 52090. [2021-11-06 18:18:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52090 states, 52082 states have (on average 1.364790138627549) internal successors, (71081), 52089 states have internal predecessors, (71081), 0 states have call successors, (0), 0 states 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 18:18:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52090 states to 52090 states and 71081 transitions. [2021-11-06 18:18:02,595 INFO L78 Accepts]: Start accepts. Automaton has 52090 states and 71081 transitions. Word has length 97 [2021-11-06 18:18:02,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:02,596 INFO L470 AbstractCegarLoop]: Abstraction has 52090 states and 71081 transitions. [2021-11-06 18:18:02,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 18:18:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 52090 states and 71081 transitions. [2021-11-06 18:18:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-06 18:18:02,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:02,612 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 18:18:02,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:18:02,613 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:18:02,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:02,614 INFO L85 PathProgramCache]: Analyzing trace with hash 679515850, now seen corresponding path program 1 times [2021-11-06 18:18:02,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:02,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605793642] [2021-11-06 18:18:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:02,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:18:02,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:02,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605793642] [2021-11-06 18:18:02,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605793642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:02,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:02,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:02,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611498739] [2021-11-06 18:18:02,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:02,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:02,887 INFO L87 Difference]: Start difference. First operand 52090 states and 71081 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 18:18:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:06,708 INFO L93 Difference]: Finished difference Result 124805 states and 170416 transitions. [2021-11-06 18:18:06,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:06,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-06 18:18:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:06,952 INFO L225 Difference]: With dead ends: 124805 [2021-11-06 18:18:06,953 INFO L226 Difference]: Without dead ends: 72759 [2021-11-06 18:18:07,201 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 18:18:07,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72759 states. [2021-11-06 18:18:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72759 to 72743. [2021-11-06 18:18:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72743 states, 72735 states have (on average 1.36580738296556) internal successors, (99342), 72742 states have internal predecessors, (99342), 0 states have call successors, (0), 0 states 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 18:18:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72743 states to 72743 states and 99342 transitions. [2021-11-06 18:18:08,839 INFO L78 Accepts]: Start accepts. Automaton has 72743 states and 99342 transitions. Word has length 128 [2021-11-06 18:18:08,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:08,840 INFO L470 AbstractCegarLoop]: Abstraction has 72743 states and 99342 transitions. [2021-11-06 18:18:08,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 18:18:08,840 INFO L276 IsEmpty]: Start isEmpty. Operand 72743 states and 99342 transitions. [2021-11-06 18:18:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 18:18:08,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:08,859 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:08,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:18:08,860 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:18:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1965631224, now seen corresponding path program 1 times [2021-11-06 18:18:08,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:08,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332036684] [2021-11-06 18:18:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:08,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:18:09,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:09,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332036684] [2021-11-06 18:18:09,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332036684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:09,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:09,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:09,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856135347] [2021-11-06 18:18:09,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:09,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:09,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:09,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:09,073 INFO L87 Difference]: Start difference. First operand 72743 states and 99342 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:13,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:13,125 INFO L93 Difference]: Finished difference Result 166103 states and 226922 transitions. [2021-11-06 18:18:13,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:13,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-06 18:18:13,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:13,303 INFO L225 Difference]: With dead ends: 166103 [2021-11-06 18:18:13,303 INFO L226 Difference]: Without dead ends: 93404 [2021-11-06 18:18:13,412 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 18:18:13,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93404 states. [2021-11-06 18:18:14,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93404 to 93388. [2021-11-06 18:18:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93388 states, 93380 states have (on average 1.3664060826729492) internal successors, (127595), 93387 states have internal predecessors, (127595), 0 states have call successors, (0), 0 states 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 18:18:15,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93388 states to 93388 states and 127595 transitions. [2021-11-06 18:18:15,427 INFO L78 Accepts]: Start accepts. Automaton has 93388 states and 127595 transitions. Word has length 165 [2021-11-06 18:18:15,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:15,428 INFO L470 AbstractCegarLoop]: Abstraction has 93388 states and 127595 transitions. [2021-11-06 18:18:15,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:15,428 INFO L276 IsEmpty]: Start isEmpty. Operand 93388 states and 127595 transitions. [2021-11-06 18:18:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-06 18:18:15,447 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:15,447 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:15,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 18:18:15,448 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:18:15,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2089096326, now seen corresponding path program 1 times [2021-11-06 18:18:15,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:15,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521410738] [2021-11-06 18:18:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:15,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 18:18:15,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:15,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521410738] [2021-11-06 18:18:15,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521410738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:15,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:15,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:18:15,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044327260] [2021-11-06 18:18:15,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:15,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:15,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:15,649 INFO L87 Difference]: Start difference. First operand 93388 states and 127595 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:20,152 INFO L93 Difference]: Finished difference Result 207399 states and 283440 transitions. [2021-11-06 18:18:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:20,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-06 18:18:20,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:20,412 INFO L225 Difference]: With dead ends: 207399 [2021-11-06 18:18:20,412 INFO L226 Difference]: Without dead ends: 114055 [2021-11-06 18:18:20,572 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 18:18:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114055 states. [2021-11-06 18:18:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114055 to 114039. [2021-11-06 18:18:23,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114039 states, 114031 states have (on average 1.3667686857082724) internal successors, (155854), 114038 states have internal predecessors, (155854), 0 states have call successors, (0), 0 states 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 18:18:23,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114039 states to 114039 states and 155854 transitions. [2021-11-06 18:18:23,403 INFO L78 Accepts]: Start accepts. Automaton has 114039 states and 155854 transitions. Word has length 165 [2021-11-06 18:18:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:23,404 INFO L470 AbstractCegarLoop]: Abstraction has 114039 states and 155854 transitions. [2021-11-06 18:18:23,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:18:23,405 INFO L276 IsEmpty]: Start isEmpty. Operand 114039 states and 155854 transitions. [2021-11-06 18:18:23,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-06 18:18:23,427 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:23,427 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:23,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 18:18:23,428 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:18:23,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:23,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1692469005, now seen corresponding path program 1 times [2021-11-06 18:18:23,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:23,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093215107] [2021-11-06 18:18:23,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:23,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:18:23,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:23,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093215107] [2021-11-06 18:18:23,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093215107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:23,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:23,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:18:23,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874735974] [2021-11-06 18:18:23,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:23,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:23,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:23,676 INFO L87 Difference]: Start difference. First operand 114039 states and 155854 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 18:18:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:18:27,472 INFO L93 Difference]: Finished difference Result 333061 states and 455232 transitions. [2021-11-06 18:18:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:18:27,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 186 [2021-11-06 18:18:27,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:18:28,142 INFO L225 Difference]: With dead ends: 333061 [2021-11-06 18:18:28,143 INFO L226 Difference]: Without dead ends: 219066 [2021-11-06 18:18:28,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:18:28,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219066 states. [2021-11-06 18:18:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219066 to 219058. [2021-11-06 18:18:33,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219058 states, 219050 states have (on average 1.3668979685003424) internal successors, (299419), 219057 states have internal predecessors, (299419), 0 states have call successors, (0), 0 states 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 18:18:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219058 states to 219058 states and 299419 transitions. [2021-11-06 18:18:33,800 INFO L78 Accepts]: Start accepts. Automaton has 219058 states and 299419 transitions. Word has length 186 [2021-11-06 18:18:33,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:18:33,801 INFO L470 AbstractCegarLoop]: Abstraction has 219058 states and 299419 transitions. [2021-11-06 18:18:33,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 18:18:33,801 INFO L276 IsEmpty]: Start isEmpty. Operand 219058 states and 299419 transitions. [2021-11-06 18:18:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-06 18:18:33,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:18:33,830 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:33,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 18:18:33,830 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 18:18:33,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:18:33,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2001600949, now seen corresponding path program 1 times [2021-11-06 18:18:33,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:18:33,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527787020] [2021-11-06 18:18:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:18:33,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:18:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:18:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-06 18:18:34,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:18:34,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527787020] [2021-11-06 18:18:34,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527787020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:18:34,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:18:34,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:18:34,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139829318] [2021-11-06 18:18:34,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:18:34,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:18:34,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:18:34,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:18:34,138 INFO L87 Difference]: Start difference. First operand 219058 states and 299419 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)