./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-dnet.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-dnet.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 fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 10:19:07,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 10:19:07,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 10:19:07,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 10:19:07,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 10:19:07,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 10:19:07,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 10:19:07,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 10:19:07,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 10:19:07,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 10:19:07,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 10:19:07,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 10:19:07,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 10:19:07,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 10:19:07,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 10:19:07,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 10:19:07,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 10:19:07,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 10:19:07,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 10:19:07,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 10:19:07,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 10:19:07,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 10:19:07,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 10:19:07,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 10:19:07,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 10:19:07,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 10:19:07,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 10:19:07,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 10:19:07,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 10:19:07,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 10:19:07,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 10:19:07,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 10:19:07,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 10:19:07,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 10:19:07,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 10:19:07,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 10:19:07,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 10:19:07,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 10:19:07,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 10:19:07,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 10:19:07,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 10:19:07,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 10:19:07,146 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 10:19:07,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 10:19:07,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 10:19:07,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 10:19:07,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 10:19:07,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 10:19:07,150 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 10:19:07,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 10:19:07,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 10:19:07,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 10:19:07,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 10:19:07,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 10:19:07,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 10:19:07,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 10:19:07,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 10:19:07,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 10:19:07,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 10:19:07,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 10:19:07,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 10:19:07,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:19:07,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 10:19:07,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 10:19:07,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 10:19:07,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 10:19:07,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 10:19:07,155 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 10:19:07,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 10:19:07,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 10:19:07,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 10:19:07,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 [2021-11-04 10:19:07,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 10:19:07,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 10:19:07,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 10:19:07,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 10:19:07,359 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 10:19:07,360 INFO L432 ainManager$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-dnet.cil.i [2021-11-04 10:19:07,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe48612f/804bbc5ac4f542f9a44f4de5cd996850/FLAGc9dd5d7a5 [2021-11-04 10:19:08,038 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 10:19:08,038 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-dnet.cil.i [2021-11-04 10:19:08,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe48612f/804bbc5ac4f542f9a44f4de5cd996850/FLAGc9dd5d7a5 [2021-11-04 10:19:08,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe48612f/804bbc5ac4f542f9a44f4de5cd996850 [2021-11-04 10:19:08,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 10:19:08,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 10:19:08,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 10:19:08,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 10:19:08,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 10:19:08,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:19:08" (1/1) ... [2021-11-04 10:19:08,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae3ec5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:08, skipping insertion in model container [2021-11-04 10:19:08,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:19:08" (1/1) ... [2021-11-04 10:19:08,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 10:19:08,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 10:19:10,343 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-dnet.cil.i[305216,305229] [2021-11-04 10:19:10,347 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-dnet.cil.i[305385,305398] [2021-11-04 10:19:10,352 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-dnet.cil.i[305552,305565] [2021-11-04 10:19:10,353 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-dnet.cil.i[305720,305733] [2021-11-04 10:19:10,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:19:10,421 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 10:19:10,680 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-dnet.cil.i[305216,305229] [2021-11-04 10:19:10,681 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-dnet.cil.i[305385,305398] [2021-11-04 10:19:10,681 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-dnet.cil.i[305552,305565] [2021-11-04 10:19:10,682 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-dnet.cil.i[305720,305733] [2021-11-04 10:19:10,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 10:19:10,795 INFO L208 MainTranslator]: Completed translation [2021-11-04 10:19:10,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10 WrapperNode [2021-11-04 10:19:10,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 10:19:10,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 10:19:10,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 10:19:10,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 10:19:10,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10" (1/1) ... [2021-11-04 10:19:10,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10" (1/1) ... [2021-11-04 10:19:12,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 10:19:12,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 10:19:12,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 10:19:12,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 10:19:12,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10" (1/1) ... [2021-11-04 10:19:12,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10" (1/1) ... [2021-11-04 10:19:12,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10" (1/1) ... [2021-11-04 10:19:12,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10" (1/1) ... [2021-11-04 10:19:13,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10" (1/1) ... [2021-11-04 10:19:13,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10" (1/1) ... [2021-11-04 10:19:14,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10" (1/1) ... [2021-11-04 10:19:14,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 10:19:14,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 10:19:14,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 10:19:14,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 10:19:14,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10" (1/1) ... [2021-11-04 10:19:14,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 10:19:14,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 10:19:14,525 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) [2021-11-04 10:19:14,583 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 [2021-11-04 10:19:14,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 10:19:14,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 10:19:14,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 10:19:14,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 10:19:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 10:19:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 10:19:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 10:19:14,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 10:19:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 10:19:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 10:19:14,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 10:19:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 10:19:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 10:19:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 10:19:14,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 10:19:23,423 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-04 10:19:23,423 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-04 10:19:23,423 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-04 10:19:23,423 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-04 10:19:23,424 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-04 10:19:23,424 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-04 10:19:23,424 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-04 10:19:23,426 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-04 10:19:23,428 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-04 10:19:23,428 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-04 10:19:23,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 10:19:23,467 INFO L299 CfgBuilder]: Removed 19368 assume(true) statements. [2021-11-04 10:19:23,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:19:23 BoogieIcfgContainer [2021-11-04 10:19:23,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 10:19:23,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 10:19:23,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 10:19:23,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 10:19:23,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 10:19:08" (1/3) ... [2021-11-04 10:19:23,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab08738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:19:23, skipping insertion in model container [2021-11-04 10:19:23,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:19:10" (2/3) ... [2021-11-04 10:19:23,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab08738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:19:23, skipping insertion in model container [2021-11-04 10:19:23,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:19:23" (3/3) ... [2021-11-04 10:19:23,488 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2021-11-04 10:19:23,494 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 10:19:23,495 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2021-11-04 10:19:23,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 10:19:23,573 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 [2021-11-04 10:19:23,573 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-11-04 10:19:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 13017 states, 12985 states have (on average 1.2266461301501732) internal successors, (15928), 13016 states have internal predecessors, (15928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:19:23,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-04 10:19:23,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:19:23,702 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] [2021-11-04 10:19:23,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-04 10:19:23,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:19:23,706 INFO L85 PathProgramCache]: Analyzing trace with hash -481796582, now seen corresponding path program 1 times [2021-11-04 10:19:23,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:19:23,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887958449] [2021-11-04 10:19:23,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:19:23,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:19:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:19:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:19:24,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:19:24,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887958449] [2021-11-04 10:19:24,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887958449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:19:24,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:19:24,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:19:24,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133784381] [2021-11-04 10:19:24,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:19:24,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:19:24,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:19:24,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:19:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:19:24,278 INFO L87 Difference]: Start difference. First operand has 13017 states, 12985 states have (on average 1.2266461301501732) internal successors, (15928), 13016 states have internal predecessors, (15928), 0 states have call successors, (0), 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 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:19:26,364 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 [] [2021-11-04 10:19:34,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:21:13,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:21:13,986 INFO L93 Difference]: Finished difference Result 38619 states and 47230 transitions. [2021-11-04 10:21:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:21:14,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-04 10:21:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:21:14,100 INFO L225 Difference]: With dead ends: 38619 [2021-11-04 10:21:14,100 INFO L226 Difference]: Without dead ends: 24145 [2021-11-04 10:21:14,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:21:14,141 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 15480 mSDsluCounter, 15807 mSDsCounter, 0 mSdLazyCounter, 30076 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99526.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15480 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 30080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 202.20ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30076 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 106615.35ms IncrementalHoareTripleChecker+Time [2021-11-04 10:21:14,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15480 Valid, 1587 Invalid, 30080 Unknown, 0 Unchecked, 202.20ms Time], IncrementalHoareTripleChecker [2 Valid, 30076 Invalid, 2 Unknown, 0 Unchecked, 106615.35ms Time] [2021-11-04 10:21:14,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24145 states. [2021-11-04 10:21:14,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24145 to 24112. [2021-11-04 10:21:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24112 states, 24080 states have (on average 1.1691445182724252) internal successors, (28153), 24111 states have internal predecessors, (28153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:21:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24112 states to 24112 states and 28153 transitions. [2021-11-04 10:21:14,705 INFO L78 Accepts]: Start accepts. Automaton has 24112 states and 28153 transitions. Word has length 45 [2021-11-04 10:21:14,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:21:14,706 INFO L470 AbstractCegarLoop]: Abstraction has 24112 states and 28153 transitions. [2021-11-04 10:21:14,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:21:14,707 INFO L276 IsEmpty]: Start isEmpty. Operand 24112 states and 28153 transitions. [2021-11-04 10:21:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-04 10:21:14,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:21:14,713 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] [2021-11-04 10:21:14,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 10:21:14,714 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-04 10:21:14,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:21:14,715 INFO L85 PathProgramCache]: Analyzing trace with hash -38719139, now seen corresponding path program 1 times [2021-11-04 10:21:14,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:21:14,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081528879] [2021-11-04 10:21:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:21:14,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:21:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:21:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:21:14,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:21:14,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081528879] [2021-11-04 10:21:14,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081528879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:21:14,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:21:14,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:21:14,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47920115] [2021-11-04 10:21:14,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:21:14,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:21:14,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:21:14,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:21:14,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:21:14,969 INFO L87 Difference]: Start difference. First operand 24112 states and 28153 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:21:17,014 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:21:23,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:22:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:22:59,564 INFO L93 Difference]: Finished difference Result 71718 states and 83764 transitions. [2021-11-04 10:22:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:22:59,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-04 10:22:59,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:22:59,721 INFO L225 Difference]: With dead ends: 71718 [2021-11-04 10:22:59,721 INFO L226 Difference]: Without dead ends: 47690 [2021-11-04 10:22:59,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:22:59,769 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13866 mSDsluCounter, 14012 mSDsCounter, 0 mSdLazyCounter, 28372 mSolverCounterSat, 98 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94877.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13866 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 148.76ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 28372 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101708.51ms IncrementalHoareTripleChecker+Time [2021-11-04 10:22:59,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13866 Valid, 0 Invalid, 28472 Unknown, 0 Unchecked, 148.76ms Time], IncrementalHoareTripleChecker [98 Valid, 28372 Invalid, 2 Unknown, 0 Unchecked, 101708.51ms Time] [2021-11-04 10:22:59,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47690 states. [2021-11-04 10:23:00,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47690 to 43691. [2021-11-04 10:23:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43691 states, 43659 states have (on average 1.1747406033120318) internal successors, (51288), 43690 states have internal predecessors, (51288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:23:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43691 states to 43691 states and 51288 transitions. [2021-11-04 10:23:00,849 INFO L78 Accepts]: Start accepts. Automaton has 43691 states and 51288 transitions. Word has length 46 [2021-11-04 10:23:00,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:23:00,850 INFO L470 AbstractCegarLoop]: Abstraction has 43691 states and 51288 transitions. [2021-11-04 10:23:00,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:23:00,850 INFO L276 IsEmpty]: Start isEmpty. Operand 43691 states and 51288 transitions. [2021-11-04 10:23:00,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-04 10:23:00,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:23:00,853 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] [2021-11-04 10:23:00,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 10:23:00,854 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-04 10:23:00,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:23:00,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1141204786, now seen corresponding path program 1 times [2021-11-04 10:23:00,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:23:00,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433426258] [2021-11-04 10:23:00,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:23:00,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:23:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:23:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:23:01,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:23:01,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433426258] [2021-11-04 10:23:01,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433426258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:23:01,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:23:01,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:23:01,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588373248] [2021-11-04 10:23:01,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:23:01,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:23:01,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:23:01,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:23:01,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:23:01,272 INFO L87 Difference]: Start difference. First operand 43691 states and 51288 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:23:03,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:23:08,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:24:37,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:24:37,612 INFO L93 Difference]: Finished difference Result 90373 states and 106343 transitions. [2021-11-04 10:24:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:24:37,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-04 10:24:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:24:37,695 INFO L225 Difference]: With dead ends: 90373 [2021-11-04 10:24:37,695 INFO L226 Difference]: Without dead ends: 46766 [2021-11-04 10:24:37,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.32ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:24:37,745 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1128 mSDsluCounter, 14163 mSDsCounter, 0 mSdLazyCounter, 28510 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88703.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 110.33ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 28510 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94039.20ms IncrementalHoareTripleChecker+Time [2021-11-04 10:24:37,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 0 Invalid, 28543 Unknown, 0 Unchecked, 110.33ms Time], IncrementalHoareTripleChecker [31 Valid, 28510 Invalid, 2 Unknown, 0 Unchecked, 94039.20ms Time] [2021-11-04 10:24:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46766 states. [2021-11-04 10:24:38,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46766 to 46607. [2021-11-04 10:24:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46607 states, 46575 states have (on average 1.1782716049382715) internal successors, (54878), 46606 states have internal predecessors, (54878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:24:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46607 states to 46607 states and 54878 transitions. [2021-11-04 10:24:38,647 INFO L78 Accepts]: Start accepts. Automaton has 46607 states and 54878 transitions. Word has length 50 [2021-11-04 10:24:38,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:24:38,648 INFO L470 AbstractCegarLoop]: Abstraction has 46607 states and 54878 transitions. [2021-11-04 10:24:38,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:24:38,649 INFO L276 IsEmpty]: Start isEmpty. Operand 46607 states and 54878 transitions. [2021-11-04 10:24:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-04 10:24:38,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:24:38,650 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, 1, 1] [2021-11-04 10:24:38,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 10:24:38,651 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-04 10:24:38,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:24:38,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1032539779, now seen corresponding path program 1 times [2021-11-04 10:24:38,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:24:38,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928292844] [2021-11-04 10:24:38,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:24:38,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:24:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:24:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:24:38,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:24:38,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928292844] [2021-11-04 10:24:38,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928292844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:24:38,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:24:38,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:24:38,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183397079] [2021-11-04 10:24:38,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:24:38,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:24:38,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:24:38,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:24:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:24:38,820 INFO L87 Difference]: Start difference. First operand 46607 states and 54878 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:24:40,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:25:42,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:26:23,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:26:23,093 INFO L93 Difference]: Finished difference Result 137536 states and 161782 transitions. [2021-11-04 10:26:23,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:26:23,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-04 10:26:23,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:26:23,260 INFO L225 Difference]: With dead ends: 137536 [2021-11-04 10:26:23,260 INFO L226 Difference]: Without dead ends: 91013 [2021-11-04 10:26:23,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.18ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:26:23,342 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13671 mSDsluCounter, 13909 mSDsCounter, 0 mSdLazyCounter, 28305 mSolverCounterSat, 97 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93820.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13671 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 115.15ms SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 28305 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100556.46ms IncrementalHoareTripleChecker+Time [2021-11-04 10:26:23,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13671 Valid, 0 Invalid, 28404 Unknown, 0 Unchecked, 115.15ms Time], IncrementalHoareTripleChecker [97 Valid, 28305 Invalid, 2 Unknown, 0 Unchecked, 100556.46ms Time] [2021-11-04 10:26:23,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91013 states. [2021-11-04 10:26:25,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91013 to 87059. [2021-11-04 10:26:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87059 states, 87027 states have (on average 1.1786916704011399) internal successors, (102578), 87058 states have internal predecessors, (102578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:26:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87059 states to 87059 states and 102578 transitions. [2021-11-04 10:26:25,324 INFO L78 Accepts]: Start accepts. Automaton has 87059 states and 102578 transitions. Word has length 60 [2021-11-04 10:26:25,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:26:25,325 INFO L470 AbstractCegarLoop]: Abstraction has 87059 states and 102578 transitions. [2021-11-04 10:26:25,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:26:25,325 INFO L276 IsEmpty]: Start isEmpty. Operand 87059 states and 102578 transitions. [2021-11-04 10:26:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-04 10:26:25,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:26:25,326 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:26:25,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 10:26:25,327 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-04 10:26:25,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:26:25,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1955602062, now seen corresponding path program 1 times [2021-11-04 10:26:25,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:26:25,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048434857] [2021-11-04 10:26:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:26:25,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:26:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:26:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:26:25,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:26:25,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048434857] [2021-11-04 10:26:25,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048434857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:26:25,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:26:25,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:26:25,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315711283] [2021-11-04 10:26:25,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:26:25,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:26:25,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:26:25,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:26:25,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:26:25,486 INFO L87 Difference]: Start difference. First operand 87059 states and 102578 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:26:27,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:28:33,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:28:50,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:28:50,132 INFO L93 Difference]: Finished difference Result 171224 states and 201758 transitions. [2021-11-04 10:28:50,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:28:50,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-04 10:28:50,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:28:50,330 INFO L225 Difference]: With dead ends: 171224 [2021-11-04 10:28:50,330 INFO L226 Difference]: Without dead ends: 84249 [2021-11-04 10:28:50,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:28:50,475 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13491 mSDsluCounter, 14164 mSDsCounter, 0 mSdLazyCounter, 41766 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132195.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13491 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 154.60ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 41766 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140376.65ms IncrementalHoareTripleChecker+Time [2021-11-04 10:28:50,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13491 Valid, 0 Invalid, 41782 Unknown, 0 Unchecked, 154.60ms Time], IncrementalHoareTripleChecker [14 Valid, 41766 Invalid, 2 Unknown, 0 Unchecked, 140376.65ms Time] [2021-11-04 10:28:50,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84249 states. [2021-11-04 10:28:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84249 to 84126. [2021-11-04 10:28:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84126 states, 84094 states have (on average 1.177931838181083) internal successors, (99057), 84125 states have internal predecessors, (99057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:28:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84126 states to 84126 states and 99057 transitions. [2021-11-04 10:28:52,372 INFO L78 Accepts]: Start accepts. Automaton has 84126 states and 99057 transitions. Word has length 66 [2021-11-04 10:28:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:28:52,373 INFO L470 AbstractCegarLoop]: Abstraction has 84126 states and 99057 transitions. [2021-11-04 10:28:52,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:28:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 84126 states and 99057 transitions. [2021-11-04 10:28:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-04 10:28:52,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:28:52,375 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:28:52,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 10:28:52,375 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-04 10:28:52,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:28:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2000051397, now seen corresponding path program 1 times [2021-11-04 10:28:52,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:28:52,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453374514] [2021-11-04 10:28:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:28:52,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:28:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:28:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 10:28:52,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:28:52,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453374514] [2021-11-04 10:28:52,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453374514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:28:52,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:28:52,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:28:52,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371966791] [2021-11-04 10:28:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:28:52,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 10:28:52,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:28:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 10:28:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:28:52,550 INFO L87 Difference]: Start difference. First operand 84126 states and 99057 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:28:54,593 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:30:36,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:30:45,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:30:45,218 INFO L93 Difference]: Finished difference Result 251530 states and 296202 transitions. [2021-11-04 10:30:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 10:30:45,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-04 10:30:45,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 10:30:45,730 INFO L225 Difference]: With dead ends: 251530 [2021-11-04 10:30:45,730 INFO L226 Difference]: Without dead ends: 167553 [2021-11-04 10:30:45,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 10:30:45,860 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13970 mSDsluCounter, 14193 mSDsCounter, 0 mSdLazyCounter, 28524 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100619.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13970 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 125.92ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28524 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107787.41ms IncrementalHoareTripleChecker+Time [2021-11-04 10:30:45,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13970 Valid, 0 Invalid, 28527 Unknown, 0 Unchecked, 125.92ms Time], IncrementalHoareTripleChecker [1 Valid, 28524 Invalid, 2 Unknown, 0 Unchecked, 107787.41ms Time] [2021-11-04 10:30:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167553 states. [2021-11-04 10:30:48,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167553 to 167490. [2021-11-04 10:30:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167490 states, 167458 states have (on average 1.177817721458515) internal successors, (197235), 167489 states have internal predecessors, (197235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:30:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167490 states to 167490 states and 197235 transitions. [2021-11-04 10:30:49,455 INFO L78 Accepts]: Start accepts. Automaton has 167490 states and 197235 transitions. Word has length 70 [2021-11-04 10:30:49,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 10:30:49,456 INFO L470 AbstractCegarLoop]: Abstraction has 167490 states and 197235 transitions. [2021-11-04 10:30:49,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:30:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 167490 states and 197235 transitions. [2021-11-04 10:30:49,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-04 10:30:49,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 10:30:49,458 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-04 10:30:49,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 10:30:49,459 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 29 more)] === [2021-11-04 10:30:49,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 10:30:49,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2036750461, now seen corresponding path program 1 times [2021-11-04 10:30:49,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 10:30:49,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363503103] [2021-11-04 10:30:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 10:30:49,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 10:30:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 10:30:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-04 10:30:49,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 10:30:49,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363503103] [2021-11-04 10:30:49,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363503103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 10:30:49,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 10:30:49,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 10:30:49,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597944161] [2021-11-04 10:30:49,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 10:30:49,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 10:30:49,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 10:30:49,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 10:30:49,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 10:30:49,929 INFO L87 Difference]: Start difference. First operand 167490 states and 197235 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 10:30:52,006 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 [] [2021-11-04 10:32:25,644 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 10:33:26,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 10:33:26,001 INFO L93 Difference]: Finished difference Result 334747 states and 394194 transitions. [2021-11-04 10:33:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 10:33:26,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 70 [2021-11-04 10:33:26,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Killed by 15