./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.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-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.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 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:03:50,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:03:50,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:03:50,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:03:50,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:03:50,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:03:50,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:03:50,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:03:50,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:03:50,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:03:50,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:03:50,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:03:50,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:03:50,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:03:50,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:03:50,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:03:50,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:03:50,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:03:50,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:03:50,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:03:50,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:03:50,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:03:50,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:03:50,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:03:50,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:03:50,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:03:50,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:03:50,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:03:50,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:03:50,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:03:50,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:03:50,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:03:50,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:03:50,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:03:50,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:03:50,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:03:50,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:03:50,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:03:50,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:03:50,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:03:50,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:03:50,125 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:03:50,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:03:50,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:03:50,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:03:50,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:03:50,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:03:50,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:03:50,164 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:03:50,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:03:50,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:03:50,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:03:50,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:03:50,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:03:50,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:03:50,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:03:50,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:03:50,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:03:50,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:03:50,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:03:50,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:03:50,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:03:50,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:03:50,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:03:50,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:03:50,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:03:50,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:03:50,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:03:50,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:03:50,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:03:50,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:03:50,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b [2021-11-06 19:03:50,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:03:50,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:03:50,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:03:50,438 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:03:50,439 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:03:50,440 INFO L432 ainManager$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-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2021-11-06 19:03:50,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82603f77/595f602977a64a32bf9ff1380b562519/FLAG53cb5152f [2021-11-06 19:03:51,246 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:03:51,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2021-11-06 19:03:51,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82603f77/595f602977a64a32bf9ff1380b562519/FLAG53cb5152f [2021-11-06 19:03:51,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82603f77/595f602977a64a32bf9ff1380b562519 [2021-11-06 19:03:51,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:03:51,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:03:51,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:03:51,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:03:51,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:03:51,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:51" (1/1) ... [2021-11-06 19:03:51,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f843aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:51, skipping insertion in model container [2021-11-06 19:03:51,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:51" (1/1) ... [2021-11-06 19:03:51,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:03:51,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:03:54,969 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-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2021-11-06 19:03:54,972 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-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2021-11-06 19:03:54,974 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-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2021-11-06 19:03:54,975 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-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2021-11-06 19:03:55,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:03:55,052 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:03:55,370 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-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2021-11-06 19:03:55,372 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-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2021-11-06 19:03:55,372 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-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2021-11-06 19:03:55,373 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-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2021-11-06 19:03:55,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:03:55,538 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:03:55,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55 WrapperNode [2021-11-06 19:03:55,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:03:55,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:03:55,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:03:55,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:03:55,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55" (1/1) ... [2021-11-06 19:03:55,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55" (1/1) ... [2021-11-06 19:03:56,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:03:56,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:03:56,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:03:56,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:03:56,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55" (1/1) ... [2021-11-06 19:03:56,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55" (1/1) ... [2021-11-06 19:03:56,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55" (1/1) ... [2021-11-06 19:03:56,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55" (1/1) ... [2021-11-06 19:03:57,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55" (1/1) ... [2021-11-06 19:03:57,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55" (1/1) ... [2021-11-06 19:03:57,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55" (1/1) ... [2021-11-06 19:03:57,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:03:57,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:03:57,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:03:57,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:03:57,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55" (1/1) ... [2021-11-06 19:03:57,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:03:57,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:03:57,813 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 19:03:57,825 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 19:03:57,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:03:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:03:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:03:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:03:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:03:57,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:03:57,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:03:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:03:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:03:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:03:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:04:09,706 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:04:09,707 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:04:09,707 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:04:09,707 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:04:09,709 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:04:09,711 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:04:09,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:04:09,760 INFO L299 CfgBuilder]: Removed 7996 assume(true) statements. [2021-11-06 19:04:09,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:04:09 BoogieIcfgContainer [2021-11-06 19:04:09,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:04:09,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:04:09,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:04:09,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:04:09,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:03:51" (1/3) ... [2021-11-06 19:04:09,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65587066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:04:09, skipping insertion in model container [2021-11-06 19:04:09,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:55" (2/3) ... [2021-11-06 19:04:09,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65587066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:04:09, skipping insertion in model container [2021-11-06 19:04:09,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:04:09" (3/3) ... [2021-11-06 19:04:09,779 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2021-11-06 19:04:09,785 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:04:09,785 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2021-11-06 19:04:09,856 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:04:09,862 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 19:04:09,862 INFO L340 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2021-11-06 19:04:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 6306 states, 6253 states have (on average 1.2653126499280345) internal successors, (7912), 6305 states have internal predecessors, (7912), 0 states have call successors, (0), 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 19:04:09,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 19:04:09,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:09,982 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] [2021-11-06 19:04:09,982 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 19:04:09,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2134408722, now seen corresponding path program 1 times [2021-11-06 19:04:09,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:09,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434780000] [2021-11-06 19:04:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:09,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:10,554 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 19:04:10,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:10,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434780000] [2021-11-06 19:04:10,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434780000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:10,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:10,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:10,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62742740] [2021-11-06 19:04:10,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:10,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:10,593 INFO L87 Difference]: Start difference. First operand has 6306 states, 6253 states have (on average 1.2653126499280345) internal successors, (7912), 6305 states have internal predecessors, (7912), 0 states have call successors, (0), 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 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 19:04:12,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:12,013 INFO L93 Difference]: Finished difference Result 18214 states and 22810 transitions. [2021-11-06 19:04:12,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:12,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-06 19:04:12,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:12,083 INFO L225 Difference]: With dead ends: 18214 [2021-11-06 19:04:12,084 INFO L226 Difference]: Without dead ends: 11752 [2021-11-06 19:04:12,109 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 19:04:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11752 states. [2021-11-06 19:04:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11752 to 11472. [2021-11-06 19:04:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11472 states, 11419 states have (on average 1.2307557579472808) internal successors, (14054), 11471 states have internal predecessors, (14054), 0 states have call successors, (0), 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 19:04:12,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 14054 transitions. [2021-11-06 19:04:12,659 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 14054 transitions. Word has length 49 [2021-11-06 19:04:12,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:12,659 INFO L470 AbstractCegarLoop]: Abstraction has 11472 states and 14054 transitions. [2021-11-06 19:04:12,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 19:04:12,660 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 14054 transitions. [2021-11-06 19:04:12,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-06 19:04:12,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:12,666 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] [2021-11-06 19:04:12,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:04:12,667 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 19:04:12,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:12,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1502773357, now seen corresponding path program 1 times [2021-11-06 19:04:12,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:12,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102155262] [2021-11-06 19:04:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:12,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:12,879 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 19:04:12,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:12,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102155262] [2021-11-06 19:04:12,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102155262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:12,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:12,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:12,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386230082] [2021-11-06 19:04:12,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:12,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:12,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:12,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:12,885 INFO L87 Difference]: Start difference. First operand 11472 states and 14054 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 19:04:14,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:14,147 INFO L93 Difference]: Finished difference Result 34002 states and 41723 transitions. [2021-11-06 19:04:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:14,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-06 19:04:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:14,265 INFO L225 Difference]: With dead ends: 34002 [2021-11-06 19:04:14,265 INFO L226 Difference]: Without dead ends: 22622 [2021-11-06 19:04:14,303 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 19:04:14,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22622 states. [2021-11-06 19:04:15,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22622 to 22588. [2021-11-06 19:04:15,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22588 states, 22535 states have (on average 1.231107166629687) internal successors, (27743), 22587 states have internal predecessors, (27743), 0 states have call successors, (0), 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 19:04:15,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22588 states to 22588 states and 27743 transitions. [2021-11-06 19:04:15,198 INFO L78 Accepts]: Start accepts. Automaton has 22588 states and 27743 transitions. Word has length 51 [2021-11-06 19:04:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:15,200 INFO L470 AbstractCegarLoop]: Abstraction has 22588 states and 27743 transitions. [2021-11-06 19:04:15,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 19:04:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 22588 states and 27743 transitions. [2021-11-06 19:04:15,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 19:04:15,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:15,207 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] [2021-11-06 19:04:15,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:04:15,208 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 19:04:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:15,209 INFO L85 PathProgramCache]: Analyzing trace with hash -237173952, now seen corresponding path program 1 times [2021-11-06 19:04:15,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:15,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402688035] [2021-11-06 19:04:15,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:15,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:15,355 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 19:04:15,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:15,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402688035] [2021-11-06 19:04:15,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402688035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:15,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:15,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:15,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929655361] [2021-11-06 19:04:15,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:15,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:15,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:15,358 INFO L87 Difference]: Start difference. First operand 22588 states and 27743 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 19:04:18,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:18,001 INFO L93 Difference]: Finished difference Result 63944 states and 78446 transitions. [2021-11-06 19:04:18,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:18,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-06 19:04:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:18,117 INFO L225 Difference]: With dead ends: 63944 [2021-11-06 19:04:18,118 INFO L226 Difference]: Without dead ends: 41448 [2021-11-06 19:04:18,203 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 19:04:18,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41448 states. [2021-11-06 19:04:19,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41448 to 40956. [2021-11-06 19:04:19,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40956 states, 40903 states have (on average 1.228247316822727) internal successors, (50239), 40955 states have internal predecessors, (50239), 0 states have call successors, (0), 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 19:04:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40956 states to 40956 states and 50239 transitions. [2021-11-06 19:04:19,493 INFO L78 Accepts]: Start accepts. Automaton has 40956 states and 50239 transitions. Word has length 55 [2021-11-06 19:04:19,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:19,495 INFO L470 AbstractCegarLoop]: Abstraction has 40956 states and 50239 transitions. [2021-11-06 19:04:19,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 19:04:19,495 INFO L276 IsEmpty]: Start isEmpty. Operand 40956 states and 50239 transitions. [2021-11-06 19:04:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-06 19:04:19,497 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:19,497 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] [2021-11-06 19:04:19,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:04:19,498 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 19:04:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1307803746, now seen corresponding path program 1 times [2021-11-06 19:04:19,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:19,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454600402] [2021-11-06 19:04:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:19,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:19,724 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 19:04:19,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:19,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454600402] [2021-11-06 19:04:19,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454600402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:19,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:19,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 19:04:19,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075982035] [2021-11-06 19:04:19,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 19:04:19,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 19:04:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-06 19:04:19,731 INFO L87 Difference]: Start difference. First operand 40956 states and 50239 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 19:04:22,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:22,597 INFO L93 Difference]: Finished difference Result 76697 states and 94095 transitions. [2021-11-06 19:04:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 19:04:22,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-06 19:04:22,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:22,678 INFO L225 Difference]: With dead ends: 76697 [2021-11-06 19:04:22,678 INFO L226 Difference]: Without dead ends: 35833 [2021-11-06 19:04:22,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-06 19:04:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35833 states. [2021-11-06 19:04:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35833 to 35617. [2021-11-06 19:04:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35617 states, 35564 states have (on average 1.2284051287819142) internal successors, (43687), 35616 states have internal predecessors, (43687), 0 states have call successors, (0), 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 19:04:23,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35617 states to 35617 states and 43687 transitions. [2021-11-06 19:04:23,655 INFO L78 Accepts]: Start accepts. Automaton has 35617 states and 43687 transitions. Word has length 56 [2021-11-06 19:04:23,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:23,655 INFO L470 AbstractCegarLoop]: Abstraction has 35617 states and 43687 transitions. [2021-11-06 19:04:23,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 19:04:23,656 INFO L276 IsEmpty]: Start isEmpty. Operand 35617 states and 43687 transitions. [2021-11-06 19:04:23,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 19:04:23,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:23,657 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:04:23,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:04:23,658 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 19:04:23,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:23,659 INFO L85 PathProgramCache]: Analyzing trace with hash 823876995, now seen corresponding path program 1 times [2021-11-06 19:04:23,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:23,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827788556] [2021-11-06 19:04:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:23,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:04:23,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:23,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827788556] [2021-11-06 19:04:23,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827788556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:23,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:23,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:23,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41560598] [2021-11-06 19:04:23,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:23,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:23,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:23,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:23,826 INFO L87 Difference]: Start difference. First operand 35617 states and 43687 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 19:04:26,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:26,094 INFO L93 Difference]: Finished difference Result 103811 states and 127496 transitions. [2021-11-06 19:04:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:26,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-06 19:04:26,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:26,254 INFO L225 Difference]: With dead ends: 103811 [2021-11-06 19:04:26,254 INFO L226 Difference]: Without dead ends: 69439 [2021-11-06 19:04:26,345 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 19:04:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69439 states. [2021-11-06 19:04:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69439 to 69405. [2021-11-06 19:04:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69405 states, 69352 states have (on average 1.2290200715192063) internal successors, (85235), 69404 states have internal predecessors, (85235), 0 states have call successors, (0), 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 19:04:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69405 states to 69405 states and 85235 transitions. [2021-11-06 19:04:28,386 INFO L78 Accepts]: Start accepts. Automaton has 69405 states and 85235 transitions. Word has length 80 [2021-11-06 19:04:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:28,386 INFO L470 AbstractCegarLoop]: Abstraction has 69405 states and 85235 transitions. [2021-11-06 19:04:28,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 19:04:28,387 INFO L276 IsEmpty]: Start isEmpty. Operand 69405 states and 85235 transitions. [2021-11-06 19:04:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 19:04:28,388 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:28,388 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:04:28,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:04:28,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 19:04:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:28,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1472158610, now seen corresponding path program 1 times [2021-11-06 19:04:28,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:28,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361478894] [2021-11-06 19:04:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:28,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:28,519 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 19:04:28,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:28,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361478894] [2021-11-06 19:04:28,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361478894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:28,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:28,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:28,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837451832] [2021-11-06 19:04:28,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:04:28,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:04:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:04:28,522 INFO L87 Difference]: Start difference. First operand 69405 states and 85235 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 19:04:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:31,922 INFO L93 Difference]: Finished difference Result 171363 states and 210496 transitions. [2021-11-06 19:04:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:04:31,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-06 19:04:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:32,206 INFO L225 Difference]: With dead ends: 171363 [2021-11-06 19:04:32,207 INFO L226 Difference]: Without dead ends: 103203 [2021-11-06 19:04:32,314 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 19:04:32,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103203 states. [2021-11-06 19:04:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103203 to 103169. [2021-11-06 19:04:35,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103169 states, 103116 states have (on average 1.228936343535436) internal successors, (126723), 103168 states have internal predecessors, (126723), 0 states have call successors, (0), 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 19:04:35,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103169 states to 103169 states and 126723 transitions. [2021-11-06 19:04:35,316 INFO L78 Accepts]: Start accepts. Automaton has 103169 states and 126723 transitions. Word has length 81 [2021-11-06 19:04:35,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:35,318 INFO L470 AbstractCegarLoop]: Abstraction has 103169 states and 126723 transitions. [2021-11-06 19:04:35,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 19:04:35,318 INFO L276 IsEmpty]: Start isEmpty. Operand 103169 states and 126723 transitions. [2021-11-06 19:04:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 19:04:35,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:35,320 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:04:35,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:04:35,321 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 19:04:35,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:35,321 INFO L85 PathProgramCache]: Analyzing trace with hash 451090256, now seen corresponding path program 1 times [2021-11-06 19:04:35,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:35,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308819624] [2021-11-06 19:04:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:35,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:35,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:35,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308819624] [2021-11-06 19:04:35,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308819624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:35,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:35,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:35,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002898414] [2021-11-06 19:04:35,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:35,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:35,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:35,522 INFO L87 Difference]: Start difference. First operand 103169 states and 126723 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:38,070 INFO L93 Difference]: Finished difference Result 103169 states and 126723 transitions. [2021-11-06 19:04:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:38,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-06 19:04:38,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:38,315 INFO L225 Difference]: With dead ends: 103169 [2021-11-06 19:04:38,315 INFO L226 Difference]: Without dead ends: 103163 [2021-11-06 19:04:38,357 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103163 states. [2021-11-06 19:04:41,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103163 to 103163. [2021-11-06 19:04:41,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103163 states, 103113 states have (on average 1.2289139099822526) internal successors, (126717), 103162 states have internal predecessors, (126717), 0 states have call successors, (0), 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 19:04:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103163 states to 103163 states and 126717 transitions. [2021-11-06 19:04:41,557 INFO L78 Accepts]: Start accepts. Automaton has 103163 states and 126717 transitions. Word has length 81 [2021-11-06 19:04:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:04:41,558 INFO L470 AbstractCegarLoop]: Abstraction has 103163 states and 126717 transitions. [2021-11-06 19:04:41,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 103163 states and 126717 transitions. [2021-11-06 19:04:41,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 19:04:41,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:04:41,560 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 19:04:41,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:04:41,561 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-11-06 19:04:41,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:04:41,561 INFO L85 PathProgramCache]: Analyzing trace with hash -293812333, now seen corresponding path program 1 times [2021-11-06 19:04:41,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:04:41,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504787212] [2021-11-06 19:04:41,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:04:41,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:04:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:04:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:04:41,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:04:41,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504787212] [2021-11-06 19:04:41,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504787212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:04:41,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:04:41,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:04:41,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145451261] [2021-11-06 19:04:41,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:04:41,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:04:41,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:04:41,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:04:41,744 INFO L87 Difference]: Start difference. First operand 103163 states and 126717 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:04:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:04:44,685 INFO L93 Difference]: Finished difference Result 103163 states and 126717 transitions. [2021-11-06 19:04:44,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:04:44,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-06 19:04:44,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:04:44,929 INFO L225 Difference]: With dead ends: 103163 [2021-11-06 19:04:44,929 INFO L226 Difference]: Without dead ends: 103157 [2021-11-06 19:04:44,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:04:45,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103157 states.