./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/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-wip.dd.seqcomp-5f08f0f [2021-11-05 20:00:13,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 20:00:13,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 20:00:13,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 20:00:13,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 20:00:13,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 20:00:13,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 20:00:13,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 20:00:13,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 20:00:13,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 20:00:13,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 20:00:13,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 20:00:13,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 20:00:13,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 20:00:13,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 20:00:13,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 20:00:13,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 20:00:13,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 20:00:13,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 20:00:13,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 20:00:13,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 20:00:13,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 20:00:13,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 20:00:13,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 20:00:13,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 20:00:13,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 20:00:13,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 20:00:13,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 20:00:13,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 20:00:13,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 20:00:13,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 20:00:13,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 20:00:13,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 20:00:13,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 20:00:13,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 20:00:13,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 20:00:13,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 20:00:13,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 20:00:13,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 20:00:13,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 20:00:13,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 20:00:13,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 20:00:13,233 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 20:00:13,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 20:00:13,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 20:00:13,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 20:00:13,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 20:00:13,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 20:00:13,236 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 20:00:13,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 20:00:13,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 20:00:13,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 20:00:13,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 20:00:13,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 20:00:13,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 20:00:13,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 20:00:13,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 20:00:13,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 20:00:13,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 20:00:13,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 20:00:13,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 20:00:13,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:00:13,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 20:00:13,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 20:00:13,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 20:00:13,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 20:00:13,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 20:00:13,240 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 20:00:13,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 20:00:13,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 20:00:13,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 20:00:13,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d [2021-11-05 20:00:13,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 20:00:13,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 20:00:13,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 20:00:13,571 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 20:00:13,571 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 20:00:13,573 INFO L432 ainManager$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 [2021-11-05 20:00:13,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6535a0d8/004a32a747c846d49bbf9ed60cf6415f/FLAG6e4ec4520 [2021-11-05 20:00:14,470 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 20:00:14,471 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 [2021-11-05 20:00:14,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6535a0d8/004a32a747c846d49bbf9ed60cf6415f/FLAG6e4ec4520 [2021-11-05 20:00:14,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6535a0d8/004a32a747c846d49bbf9ed60cf6415f [2021-11-05 20:00:14,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 20:00:14,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 20:00:14,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 20:00:14,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 20:00:15,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 20:00:15,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:00:14" (1/1) ... [2021-11-05 20:00:15,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea9727b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:15, skipping insertion in model container [2021-11-05 20:00:15,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:00:14" (1/1) ... [2021-11-05 20:00:15,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 20:00:15,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 20:00:17,442 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] [2021-11-05 20:00:17,445 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] [2021-11-05 20:00:17,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:00:17,504 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 20:00:17,914 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] [2021-11-05 20:00:17,915 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] [2021-11-05 20:00:17,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:00:18,096 INFO L208 MainTranslator]: Completed translation [2021-11-05 20:00:18,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18 WrapperNode [2021-11-05 20:00:18,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 20:00:18,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 20:00:18,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 20:00:18,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 20:00:18,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18" (1/1) ... [2021-11-05 20:00:18,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18" (1/1) ... [2021-11-05 20:00:22,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 20:00:22,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 20:00:22,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 20:00:22,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 20:00:22,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18" (1/1) ... [2021-11-05 20:00:22,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18" (1/1) ... [2021-11-05 20:00:23,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18" (1/1) ... [2021-11-05 20:00:23,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18" (1/1) ... [2021-11-05 20:00:24,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18" (1/1) ... [2021-11-05 20:00:24,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18" (1/1) ... [2021-11-05 20:00:25,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18" (1/1) ... [2021-11-05 20:00:25,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 20:00:25,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 20:00:25,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 20:00:25,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 20:00:25,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18" (1/1) ... [2021-11-05 20:00:25,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:00:25,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 20:00:25,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 20:00:25,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 20:00:25,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 20:00:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 20:00:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 20:00:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 20:00:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 20:00:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 20:00:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 20:00:25,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 20:00:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 20:00:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 20:00:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 20:00:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 20:00:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 20:00:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 20:00:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 20:03:22,625 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-05 20:03:22,625 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 20:03:22,626 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 20:03:22,628 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 20:03:22,703 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 20:03:22,704 INFO L299 CfgBuilder]: Removed 28753 assume(true) statements. [2021-11-05 20:03:22,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:03:22 BoogieIcfgContainer [2021-11-05 20:03:22,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 20:03:22,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 20:03:22,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 20:03:22,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 20:03:22,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 08:00:14" (1/3) ... [2021-11-05 20:03:22,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55668791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:03:22, skipping insertion in model container [2021-11-05 20:03:22,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:00:18" (2/3) ... [2021-11-05 20:03:22,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55668791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:03:22, skipping insertion in model container [2021-11-05 20:03:22,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:03:22" (3/3) ... [2021-11-05 20:03:22,727 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-05 20:03:22,731 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 20:03:22,731 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-05 20:03:22,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 20:03:22,840 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 20:03:22,840 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-05 20:03:23,090 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) [2021-11-05 20:03:23,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 20:03:23,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:23,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:23,115 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)] === [2021-11-05 20:03:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:23,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1484303944, now seen corresponding path program 1 times [2021-11-05 20:03:23,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:23,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123981498] [2021-11-05 20:03:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:23,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:03:23,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:23,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123981498] [2021-11-05 20:03:23,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123981498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:23,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:23,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:23,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854786807] [2021-11-05 20:03:23,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:23,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:23,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:24,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:24,061 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) [2021-11-05 20:03:26,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:28,082 INFO L93 Difference]: Finished difference Result 54006 states and 73816 transitions. [2021-11-05 20:03:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:28,085 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 [2021-11-05 20:03:28,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:28,237 INFO L225 Difference]: With dead ends: 54006 [2021-11-05 20:03:28,237 INFO L226 Difference]: Without dead ends: 31727 [2021-11-05 20:03:28,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:28,298 INFO L933 BasicCegarLoop]: 30095 mSDtfsCounter, 13612 mSDsluCounter, 30033 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2411.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13612 SdHoareTripleChecker+Valid, 60128 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 100.96ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2688.30ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:28,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13612 Valid, 60128 Invalid, 88 Unknown, 0 Unchecked, 100.96ms Time], IncrementalHoareTripleChecker [30 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2688.30ms Time] [2021-11-05 20:03:28,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31727 states. [2021-11-05 20:03:29,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31727 to 31435. [2021-11-05 20:03:29,150 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) [2021-11-05 20:03:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31435 states to 31435 states and 42816 transitions. [2021-11-05 20:03:29,537 INFO L78 Accepts]: Start accepts. Automaton has 31435 states and 42816 transitions. Word has length 58 [2021-11-05 20:03:29,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:29,539 INFO L470 AbstractCegarLoop]: Abstraction has 31435 states and 42816 transitions. [2021-11-05 20:03:29,540 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) [2021-11-05 20:03:29,541 INFO L276 IsEmpty]: Start isEmpty. Operand 31435 states and 42816 transitions. [2021-11-05 20:03:29,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 20:03:29,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:29,553 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:03:29,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 20:03:29,553 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)] === [2021-11-05 20:03:29,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash 707108999, now seen corresponding path program 1 times [2021-11-05 20:03:29,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:29,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122103211] [2021-11-05 20:03:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:29,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:03:29,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:29,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122103211] [2021-11-05 20:03:29,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122103211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:29,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:29,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:29,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961542014] [2021-11-05 20:03:29,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:29,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:29,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:29,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:29,856 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) [2021-11-05 20:03:31,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:33,918 INFO L93 Difference]: Finished difference Result 83497 states and 113890 transitions. [2021-11-05 20:03:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:33,920 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 [2021-11-05 20:03:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:34,083 INFO L225 Difference]: With dead ends: 83497 [2021-11-05 20:03:34,084 INFO L226 Difference]: Without dead ends: 52106 [2021-11-05 20:03:34,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:34,171 INFO L933 BasicCegarLoop]: 46206 mSDtfsCounter, 22320 mSDsluCounter, 29782 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2497.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22320 SdHoareTripleChecker+Valid, 75988 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.09ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2711.04ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:34,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22320 Valid, 75988 Invalid, 88 Unknown, 0 Unchecked, 75.09ms Time], IncrementalHoareTripleChecker [16 Valid, 71 Invalid, 1 Unknown, 0 Unchecked, 2711.04ms Time] [2021-11-05 20:03:34,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52106 states. [2021-11-05 20:03:35,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52106 to 52090. [2021-11-05 20:03:35,674 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) [2021-11-05 20:03:35,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52090 states to 52090 states and 71081 transitions. [2021-11-05 20:03:35,800 INFO L78 Accepts]: Start accepts. Automaton has 52090 states and 71081 transitions. Word has length 97 [2021-11-05 20:03:35,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:35,801 INFO L470 AbstractCegarLoop]: Abstraction has 52090 states and 71081 transitions. [2021-11-05 20:03:35,801 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) [2021-11-05 20:03:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 52090 states and 71081 transitions. [2021-11-05 20:03:35,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-05 20:03:35,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:35,824 INFO L514 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] [2021-11-05 20:03:35,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 20:03:35,824 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)] === [2021-11-05 20:03:35,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash 679515850, now seen corresponding path program 1 times [2021-11-05 20:03:35,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:35,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263188246] [2021-11-05 20:03:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:35,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:03:36,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:36,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263188246] [2021-11-05 20:03:36,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263188246] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:36,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:36,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:36,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946349320] [2021-11-05 20:03:36,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:36,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:36,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:36,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:36,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:36,119 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) [2021-11-05 20:03:38,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:40,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:40,127 INFO L93 Difference]: Finished difference Result 124805 states and 170416 transitions. [2021-11-05 20:03:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:40,128 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 [2021-11-05 20:03:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:40,354 INFO L225 Difference]: With dead ends: 124805 [2021-11-05 20:03:40,355 INFO L226 Difference]: Without dead ends: 72759 [2021-11-05 20:03:40,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:40,481 INFO L933 BasicCegarLoop]: 52150 mSDtfsCounter, 22321 mSDsluCounter, 29767 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2427.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22321 SdHoareTripleChecker+Valid, 81917 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.58ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2601.32ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:40,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22321 Valid, 81917 Invalid, 86 Unknown, 0 Unchecked, 56.58ms Time], IncrementalHoareTripleChecker [15 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2601.32ms Time] [2021-11-05 20:03:40,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72759 states. [2021-11-05 20:03:42,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72759 to 72743. [2021-11-05 20:03:42,236 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) [2021-11-05 20:03:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72743 states to 72743 states and 99342 transitions. [2021-11-05 20:03:42,573 INFO L78 Accepts]: Start accepts. Automaton has 72743 states and 99342 transitions. Word has length 128 [2021-11-05 20:03:42,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:42,574 INFO L470 AbstractCegarLoop]: Abstraction has 72743 states and 99342 transitions. [2021-11-05 20:03:42,574 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) [2021-11-05 20:03:42,575 INFO L276 IsEmpty]: Start isEmpty. Operand 72743 states and 99342 transitions. [2021-11-05 20:03:42,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-05 20:03:42,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:42,595 INFO L514 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] [2021-11-05 20:03:42,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 20:03:42,596 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)] === [2021-11-05 20:03:42,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1965631224, now seen corresponding path program 1 times [2021-11-05 20:03:42,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:42,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748013915] [2021-11-05 20:03:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:42,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 20:03:42,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:42,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748013915] [2021-11-05 20:03:42,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748013915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:42,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:42,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:42,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755903909] [2021-11-05 20:03:42,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:42,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:42,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:42,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:42,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:42,873 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) [2021-11-05 20:03:44,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:46,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:46,961 INFO L93 Difference]: Finished difference Result 166103 states and 226922 transitions. [2021-11-05 20:03:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:46,961 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 [2021-11-05 20:03:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:47,258 INFO L225 Difference]: With dead ends: 166103 [2021-11-05 20:03:47,258 INFO L226 Difference]: Without dead ends: 93404 [2021-11-05 20:03:47,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:47,448 INFO L933 BasicCegarLoop]: 52150 mSDtfsCounter, 22316 mSDsluCounter, 29780 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2359.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22316 SdHoareTripleChecker+Valid, 81930 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.07ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2544.04ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:47,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22316 Valid, 81930 Invalid, 79 Unknown, 0 Unchecked, 48.07ms Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 1 Unknown, 0 Unchecked, 2544.04ms Time] [2021-11-05 20:03:47,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93404 states. [2021-11-05 20:03:49,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93404 to 93388. [2021-11-05 20:03:49,639 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) [2021-11-05 20:03:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93388 states to 93388 states and 127595 transitions. [2021-11-05 20:03:49,845 INFO L78 Accepts]: Start accepts. Automaton has 93388 states and 127595 transitions. Word has length 165 [2021-11-05 20:03:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:49,845 INFO L470 AbstractCegarLoop]: Abstraction has 93388 states and 127595 transitions. [2021-11-05 20:03:49,845 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) [2021-11-05 20:03:49,846 INFO L276 IsEmpty]: Start isEmpty. Operand 93388 states and 127595 transitions. [2021-11-05 20:03:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-05 20:03:49,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:49,875 INFO L514 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] [2021-11-05 20:03:49,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 20:03:49,875 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)] === [2021-11-05 20:03:49,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2089096326, now seen corresponding path program 1 times [2021-11-05 20:03:49,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:49,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907406971] [2021-11-05 20:03:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:49,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 20:03:50,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:50,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907406971] [2021-11-05 20:03:50,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907406971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:50,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:50,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:03:50,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65655716] [2021-11-05 20:03:50,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:50,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:50,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:50,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:50,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:50,512 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) [2021-11-05 20:03:52,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:03:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:03:55,492 INFO L93 Difference]: Finished difference Result 207399 states and 283440 transitions. [2021-11-05 20:03:55,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:03:55,493 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 [2021-11-05 20:03:55,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:03:55,764 INFO L225 Difference]: With dead ends: 207399 [2021-11-05 20:03:55,764 INFO L226 Difference]: Without dead ends: 114055 [2021-11-05 20:03:55,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:55,900 INFO L933 BasicCegarLoop]: 52150 mSDtfsCounter, 28698 mSDsluCounter, 23401 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2426.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28698 SdHoareTripleChecker+Valid, 75551 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.82ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2556.60ms IncrementalHoareTripleChecker+Time [2021-11-05 20:03:55,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28698 Valid, 75551 Invalid, 85 Unknown, 0 Unchecked, 56.82ms Time], IncrementalHoareTripleChecker [16 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2556.60ms Time] [2021-11-05 20:03:56,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114055 states. [2021-11-05 20:03:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114055 to 114039. [2021-11-05 20:03:58,141 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) [2021-11-05 20:03:58,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114039 states to 114039 states and 155854 transitions. [2021-11-05 20:03:58,718 INFO L78 Accepts]: Start accepts. Automaton has 114039 states and 155854 transitions. Word has length 165 [2021-11-05 20:03:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:03:58,719 INFO L470 AbstractCegarLoop]: Abstraction has 114039 states and 155854 transitions. [2021-11-05 20:03:58,719 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) [2021-11-05 20:03:58,720 INFO L276 IsEmpty]: Start isEmpty. Operand 114039 states and 155854 transitions. [2021-11-05 20:03:58,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-05 20:03:58,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:03:58,753 INFO L514 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] [2021-11-05 20:03:58,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 20:03:58,754 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)] === [2021-11-05 20:03:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:03:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1692469005, now seen corresponding path program 1 times [2021-11-05 20:03:58,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:03:58,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739779644] [2021-11-05 20:03:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:03:58,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:03:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:03:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-05 20:03:59,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:03:59,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739779644] [2021-11-05 20:03:59,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739779644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:03:59,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:03:59,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 20:03:59,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042631350] [2021-11-05 20:03:59,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:03:59,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:03:59,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:03:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:03:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:03:59,191 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) [2021-11-05 20:04:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:04:03,662 INFO L93 Difference]: Finished difference Result 333061 states and 455232 transitions. [2021-11-05 20:04:03,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:04:03,663 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 [2021-11-05 20:04:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:04:04,279 INFO L225 Difference]: With dead ends: 333061 [2021-11-05 20:04:04,279 INFO L226 Difference]: Without dead ends: 219066 [2021-11-05 20:04:04,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:04,864 INFO L933 BasicCegarLoop]: 29836 mSDtfsCounter, 23551 mSDsluCounter, 29773 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23551 SdHoareTripleChecker+Valid, 59609 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.21ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.70ms IncrementalHoareTripleChecker+Time [2021-11-05 20:04:04,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23551 Valid, 59609 Invalid, 11 Unknown, 0 Unchecked, 56.21ms Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 48.70ms Time] [2021-11-05 20:04:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219066 states. [2021-11-05 20:04:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219066 to 219058. [2021-11-05 20:04:09,727 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) [2021-11-05 20:04:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219058 states to 219058 states and 299419 transitions. [2021-11-05 20:04:10,270 INFO L78 Accepts]: Start accepts. Automaton has 219058 states and 299419 transitions. Word has length 186 [2021-11-05 20:04:10,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:04:10,271 INFO L470 AbstractCegarLoop]: Abstraction has 219058 states and 299419 transitions. [2021-11-05 20:04:10,271 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) [2021-11-05 20:04:10,271 INFO L276 IsEmpty]: Start isEmpty. Operand 219058 states and 299419 transitions.