./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.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 12455b091320c0c76d2c423624e0edbad1b12a5513b49fa74bc1ca77b9c1138d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 19:20:43,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 19:20:43,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 19:20:43,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 19:20:43,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 19:20:43,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 19:20:43,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 19:20:43,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 19:20:43,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 19:20:43,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 19:20:43,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 19:20:43,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 19:20:43,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 19:20:43,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 19:20:43,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 19:20:43,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 19:20:43,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 19:20:43,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 19:20:43,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 19:20:43,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 19:20:43,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 19:20:43,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 19:20:43,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 19:20:43,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 19:20:43,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 19:20:43,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 19:20:43,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 19:20:43,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 19:20:43,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 19:20:43,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 19:20:43,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 19:20:43,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 19:20:43,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 19:20:43,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 19:20:43,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 19:20:43,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 19:20:43,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 19:20:43,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 19:20:43,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 19:20:43,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 19:20:43,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 19:20:43,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 19:20:43,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 19:20:43,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 19:20:43,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 19:20:43,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 19:20:43,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 19:20:43,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 19:20:43,171 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 19:20:43,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 19:20:43,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 19:20:43,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 19:20:43,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 19:20:43,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 19:20:43,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 19:20:43,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 19:20:43,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 19:20:43,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 19:20:43,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 19:20:43,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 19:20:43,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 19:20:43,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:20:43,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 19:20:43,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 19:20:43,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 19:20:43,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 19:20:43,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 19:20:43,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 19:20:43,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 19:20:43,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 19:20:43,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 19:20:43,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12455b091320c0c76d2c423624e0edbad1b12a5513b49fa74bc1ca77b9c1138d [2021-11-07 19:20:43,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 19:20:43,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 19:20:43,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 19:20:43,409 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 19:20:43,410 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 19:20:43,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i [2021-11-07 19:20:43,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3879d256/af04c85fdee0417b8cc71a1c1ff5de83/FLAG2b4266031 [2021-11-07 19:20:44,362 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 19:20:44,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i [2021-11-07 19:20:44,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3879d256/af04c85fdee0417b8cc71a1c1ff5de83/FLAG2b4266031 [2021-11-07 19:20:44,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3879d256/af04c85fdee0417b8cc71a1c1ff5de83 [2021-11-07 19:20:44,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 19:20:44,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 19:20:44,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 19:20:44,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 19:20:44,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 19:20:44,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:20:44" (1/1) ... [2021-11-07 19:20:44,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f53b4a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:44, skipping insertion in model container [2021-11-07 19:20:44,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:20:44" (1/1) ... [2021-11-07 19:20:44,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 19:20:45,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 19:20:53,516 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i[892113,892126] [2021-11-07 19:20:53,519 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i[892282,892295] [2021-11-07 19:20:53,519 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i[892449,892462] [2021-11-07 19:20:53,519 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i[892617,892630] [2021-11-07 19:20:53,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:20:53,608 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 19:20:54,532 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i[892113,892126] [2021-11-07 19:20:54,533 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i[892282,892295] [2021-11-07 19:20:54,534 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i[892449,892462] [2021-11-07 19:20:54,534 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i[892617,892630] [2021-11-07 19:20:54,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:20:54,811 INFO L208 MainTranslator]: Completed translation [2021-11-07 19:20:54,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54 WrapperNode [2021-11-07 19:20:54,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 19:20:54,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 19:20:54,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 19:20:54,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 19:20:54,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54" (1/1) ... [2021-11-07 19:20:55,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54" (1/1) ... [2021-11-07 19:20:56,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 19:20:56,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 19:20:56,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 19:20:56,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 19:20:56,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54" (1/1) ... [2021-11-07 19:20:56,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54" (1/1) ... [2021-11-07 19:20:57,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54" (1/1) ... [2021-11-07 19:20:57,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54" (1/1) ... [2021-11-07 19:20:58,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54" (1/1) ... [2021-11-07 19:20:58,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54" (1/1) ... [2021-11-07 19:20:58,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54" (1/1) ... [2021-11-07 19:20:58,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 19:20:58,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 19:20:58,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 19:20:58,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 19:20:58,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54" (1/1) ... [2021-11-07 19:20:58,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:20:58,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 19:20:58,908 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) [2021-11-07 19:20:58,961 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 [2021-11-07 19:20:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure hostap_free_data [2021-11-07 19:20:58,972 INFO L138 BoogieDeclarations]: Found implementation of procedure hostap_free_data [2021-11-07 19:20:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 19:20:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 19:20:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 19:20:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 19:20:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 19:20:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 19:20:58,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 19:20:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 19:20:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 19:20:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 19:20:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 19:20:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure ap_free_sta [2021-11-07 19:20:58,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ap_free_sta [2021-11-07 19:20:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure prism2_open [2021-11-07 19:20:58,974 INFO L138 BoogieDeclarations]: Found implementation of procedure prism2_open [2021-11-07 19:20:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 19:20:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 19:20:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 19:20:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure prism2_close [2021-11-07 19:20:58,974 INFO L138 BoogieDeclarations]: Found implementation of procedure prism2_close [2021-11-07 19:20:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 19:20:58,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 19:20:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 19:20:58,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 19:20:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 19:20:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 19:20:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure prism2_tx_timeout [2021-11-07 19:20:58,975 INFO L138 BoogieDeclarations]: Found implementation of procedure prism2_tx_timeout [2021-11-07 19:20:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 19:20:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 19:23:17,008 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-07 19:23:17,009 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 19:23:17,009 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 19:23:17,009 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 19:23:17,009 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-07 19:23:17,009 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-07 19:23:17,010 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2021-11-07 19:23:17,010 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2021-11-07 19:23:17,010 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#7: ldv_switch_2_#res := 0; [2021-11-07 19:23:17,010 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#8: ldv_switch_2_#res := 0; [2021-11-07 19:23:17,010 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#9: ldv_switch_2_#res := 0; [2021-11-07 19:23:17,011 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 19:23:17,011 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,011 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,011 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,011 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,011 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,011 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,012 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,012 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#9: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,012 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#22: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,012 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#21: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,013 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#24: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,013 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#23: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,013 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#20: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,013 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#11: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,013 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#10: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,013 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#13: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,013 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#12: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,014 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#19: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,014 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#18: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,014 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#15: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,014 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#14: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,014 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#17: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,014 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#16: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,014 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 19:23:17,015 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 19:23:17,016 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-07 19:23:17,017 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 19:23:17,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 19:23:17,453 INFO L299 CfgBuilder]: Removed 13871 assume(true) statements. [2021-11-07 19:23:17,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:23:17 BoogieIcfgContainer [2021-11-07 19:23:17,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 19:23:17,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 19:23:17,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 19:23:17,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 19:23:17,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:20:44" (1/3) ... [2021-11-07 19:23:17,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22bde88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:23:17, skipping insertion in model container [2021-11-07 19:23:17,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:20:54" (2/3) ... [2021-11-07 19:23:17,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22bde88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:23:17, skipping insertion in model container [2021-11-07 19:23:17,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:23:17" (3/3) ... [2021-11-07 19:23:17,471 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-hostap-hostap.cil.i [2021-11-07 19:23:17,474 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 19:23:17,475 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 270 error locations. [2021-11-07 19:23:17,560 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 19:23:17,569 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 [2021-11-07 19:23:17,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 270 error locations. [2021-11-07 19:23:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 14821 states, 14512 states have (on average 1.3831312017640573) internal successors, (20072), 14785 states have internal predecessors, (20072), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-07 19:23:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-07 19:23:17,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:23:17,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:23:17,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [prism2_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, prism2_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, prism2_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 267 more)] === [2021-11-07 19:23:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:23:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash 252020228, now seen corresponding path program 1 times [2021-11-07 19:23:17,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:23:17,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290918307] [2021-11-07 19:23:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:23:17,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:23:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:23:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:23:19,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:23:19,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290918307] [2021-11-07 19:23:19,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290918307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:23:19,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:23:19,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:23:19,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428960582] [2021-11-07 19:23:19,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:23:19,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:23:19,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:23:19,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:23:19,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:23:19,258 INFO L87 Difference]: Start difference. First operand has 14821 states, 14512 states have (on average 1.3831312017640573) internal successors, (20072), 14785 states have internal predecessors, (20072), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2021-11-07 19:23:21,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:23:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:23:22,523 INFO L93 Difference]: Finished difference Result 41272 states and 56312 transitions. [2021-11-07 19:23:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:23:22,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 446 [2021-11-07 19:23:22,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:23:22,629 INFO L225 Difference]: With dead ends: 41272 [2021-11-07 19:23:22,629 INFO L226 Difference]: Without dead ends: 25636 [2021-11-07 19:23:22,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.12ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:23:22,682 INFO L933 BasicCegarLoop]: 19866 mSDtfsCounter, 17665 mSDsluCounter, 19772 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2297.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17665 SdHoareTripleChecker+Valid, 39638 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.52ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2446.54ms IncrementalHoareTripleChecker+Time [2021-11-07 19:23:22,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17665 Valid, 39638 Invalid, 79 Unknown, 0 Unchecked, 67.52ms Time], IncrementalHoareTripleChecker [16 Valid, 62 Invalid, 1 Unknown, 0 Unchecked, 2446.54ms Time] [2021-11-07 19:23:22,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25636 states. [2021-11-07 19:23:23,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25636 to 25180. [2021-11-07 19:23:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25180 states, 24832 states have (on average 1.313466494845361) internal successors, (32616), 25109 states have internal predecessors, (32616), 64 states have call successors, (64), 14 states have call predecessors, (64), 14 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2021-11-07 19:23:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25180 states to 25180 states and 32744 transitions. [2021-11-07 19:23:23,422 INFO L78 Accepts]: Start accepts. Automaton has 25180 states and 32744 transitions. Word has length 446 [2021-11-07 19:23:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:23:23,424 INFO L470 AbstractCegarLoop]: Abstraction has 25180 states and 32744 transitions. [2021-11-07 19:23:23,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2021-11-07 19:23:23,425 INFO L276 IsEmpty]: Start isEmpty. Operand 25180 states and 32744 transitions. [2021-11-07 19:23:23,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-07 19:23:23,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:23:23,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:23:23,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 19:23:23,434 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [prism2_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, prism2_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, prism2_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 267 more)] === [2021-11-07 19:23:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:23:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash 659188358, now seen corresponding path program 1 times [2021-11-07 19:23:23,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:23:23,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104230395] [2021-11-07 19:23:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:23:23,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:23:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:23:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:23:24,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:23:24,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104230395] [2021-11-07 19:23:24,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104230395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:23:24,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:23:24,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:23:24,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685709962] [2021-11-07 19:23:24,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:23:24,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:23:24,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:23:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:23:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:23:24,566 INFO L87 Difference]: Start difference. First operand 25180 states and 32744 transitions. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2021-11-07 19:23:26,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:23:27,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:23:27,570 INFO L93 Difference]: Finished difference Result 57492 states and 74818 transitions. [2021-11-07 19:23:27,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:23:27,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 461 [2021-11-07 19:23:27,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:23:27,679 INFO L225 Difference]: With dead ends: 57492 [2021-11-07 19:23:27,679 INFO L226 Difference]: Without dead ends: 33468 [2021-11-07 19:23:27,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:23:27,746 INFO L933 BasicCegarLoop]: 17302 mSDtfsCounter, 13264 mSDsluCounter, 17226 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2257.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13264 SdHoareTripleChecker+Valid, 34528 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.17ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2349.64ms IncrementalHoareTripleChecker+Time [2021-11-07 19:23:27,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13264 Valid, 34528 Invalid, 70 Unknown, 0 Unchecked, 32.17ms Time], IncrementalHoareTripleChecker [13 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 2349.64ms Time] [2021-11-07 19:23:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33468 states. [2021-11-07 19:23:28,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33468 to 32912. [2021-11-07 19:23:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32912 states, 32529 states have (on average 1.315718282148237) internal successors, (42799), 32810 states have internal predecessors, (42799), 92 states have call successors, (92), 21 states have call predecessors, (92), 21 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2021-11-07 19:23:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32912 states to 32912 states and 42983 transitions. [2021-11-07 19:23:28,652 INFO L78 Accepts]: Start accepts. Automaton has 32912 states and 42983 transitions. Word has length 461 [2021-11-07 19:23:28,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:23:28,653 INFO L470 AbstractCegarLoop]: Abstraction has 32912 states and 42983 transitions. [2021-11-07 19:23:28,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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) [2021-11-07 19:23:28,655 INFO L276 IsEmpty]: Start isEmpty. Operand 32912 states and 42983 transitions. [2021-11-07 19:23:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-11-07 19:23:28,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:23:28,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:23:28,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 19:23:28,663 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr189ASSERT_VIOLATIONERROR_FUNCTION === [prism2_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, prism2_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, prism2_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 267 more)] === [2021-11-07 19:23:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:23:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2024045494, now seen corresponding path program 1 times [2021-11-07 19:23:28,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:23:28,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298215637] [2021-11-07 19:23:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:23:28,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:23:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:23:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:23:29,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:23:29,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298215637] [2021-11-07 19:23:29,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298215637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:23:29,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:23:29,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:23:29,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723348388] [2021-11-07 19:23:29,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:23:29,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:23:29,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:23:29,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:23:29,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:23:29,576 INFO L87 Difference]: Start difference. First operand 32912 states and 42983 transitions. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2021-11-07 19:23:31,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:23:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:23:33,124 INFO L93 Difference]: Finished difference Result 96223 states and 126120 transitions. [2021-11-07 19:23:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:23:33,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 462 [2021-11-07 19:23:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:23:33,319 INFO L225 Difference]: With dead ends: 96223 [2021-11-07 19:23:33,320 INFO L226 Difference]: Without dead ends: 64467 [2021-11-07 19:23:33,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.64ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:23:33,375 INFO L933 BasicCegarLoop]: 17269 mSDtfsCounter, 15843 mSDsluCounter, 17179 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2349.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15843 SdHoareTripleChecker+Valid, 34448 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.12ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2476.39ms IncrementalHoareTripleChecker+Time [2021-11-07 19:23:33,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15843 Valid, 34448 Invalid, 161 Unknown, 0 Unchecked, 30.12ms Time], IncrementalHoareTripleChecker [13 Valid, 147 Invalid, 1 Unknown, 0 Unchecked, 2476.39ms Time] [2021-11-07 19:23:33,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64467 states. [2021-11-07 19:23:34,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64467 to 63677. [2021-11-07 19:23:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63677 states, 63181 states have (on average 1.3211725043921432) internal successors, (83473), 63474 states have internal predecessors, (83473), 184 states have call successors, (184), 42 states have call predecessors, (184), 42 states have return successors, (184), 178 states have call predecessors, (184), 184 states have call successors, (184) [2021-11-07 19:23:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63677 states to 63677 states and 83841 transitions. [2021-11-07 19:23:34,729 INFO L78 Accepts]: Start accepts. Automaton has 63677 states and 83841 transitions. Word has length 462 [2021-11-07 19:23:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:23:34,730 INFO L470 AbstractCegarLoop]: Abstraction has 63677 states and 83841 transitions. [2021-11-07 19:23:34,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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) [2021-11-07 19:23:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 63677 states and 83841 transitions. [2021-11-07 19:23:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-07 19:23:34,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:23:34,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:23:34,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 19:23:34,740 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr191ASSERT_VIOLATIONERROR_FUNCTION === [prism2_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, prism2_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, prism2_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 267 more)] === [2021-11-07 19:23:34,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:23:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1754176242, now seen corresponding path program 1 times [2021-11-07 19:23:34,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:23:34,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736587181] [2021-11-07 19:23:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:23:34,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:23:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:23:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:23:35,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:23:35,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736587181] [2021-11-07 19:23:35,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736587181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:23:35,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:23:35,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:23:35,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777066455] [2021-11-07 19:23:35,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:23:35,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:23:35,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:23:35,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:23:35,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:23:35,911 INFO L87 Difference]: Start difference. First operand 63677 states and 83841 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2021-11-07 19:23:38,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:23:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:23:40,357 INFO L93 Difference]: Finished difference Result 188193 states and 248297 transitions. [2021-11-07 19:23:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:23:40,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 463 [2021-11-07 19:23:40,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:23:40,720 INFO L225 Difference]: With dead ends: 188193 [2021-11-07 19:23:40,721 INFO L226 Difference]: Without dead ends: 125672 [2021-11-07 19:23:40,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:23:40,837 INFO L933 BasicCegarLoop]: 17819 mSDtfsCounter, 15816 mSDsluCounter, 17171 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2373.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15816 SdHoareTripleChecker+Valid, 34990 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.11ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2475.61ms IncrementalHoareTripleChecker+Time [2021-11-07 19:23:40,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15816 Valid, 34990 Invalid, 161 Unknown, 0 Unchecked, 29.11ms Time], IncrementalHoareTripleChecker [13 Valid, 147 Invalid, 1 Unknown, 0 Unchecked, 2475.61ms Time] [2021-11-07 19:23:40,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125672 states. [2021-11-07 19:23:43,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125672 to 124898. [2021-11-07 19:23:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124898 states, 124176 states have (on average 1.3239837005540522) internal successors, (164407), 124493 states have internal predecessors, (164407), 368 states have call successors, (368), 84 states have call predecessors, (368), 84 states have return successors, (368), 356 states have call predecessors, (368), 368 states have call successors, (368) [2021-11-07 19:23:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124898 states to 124898 states and 165143 transitions. [2021-11-07 19:23:44,162 INFO L78 Accepts]: Start accepts. Automaton has 124898 states and 165143 transitions. Word has length 463 [2021-11-07 19:23:44,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:23:44,163 INFO L470 AbstractCegarLoop]: Abstraction has 124898 states and 165143 transitions. [2021-11-07 19:23:44,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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) [2021-11-07 19:23:44,163 INFO L276 IsEmpty]: Start isEmpty. Operand 124898 states and 165143 transitions. [2021-11-07 19:23:44,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-11-07 19:23:44,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:23:44,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:23:44,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 19:23:44,172 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr193ASSERT_VIOLATIONERROR_FUNCTION === [prism2_tx_timeoutErr0ASSERT_VIOLATIONERROR_FUNCTION, prism2_tx_timeoutErr1ASSERT_VIOLATIONERROR_FUNCTION, prism2_tx_timeoutErr2ASSERT_VIOLATIONERROR_FUNCTION (and 267 more)] === [2021-11-07 19:23:44,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:23:44,172 INFO L85 PathProgramCache]: Analyzing trace with hash 396532308, now seen corresponding path program 1 times [2021-11-07 19:23:44,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:23:44,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110796926] [2021-11-07 19:23:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:23:44,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:23:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:23:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:23:45,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:23:45,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110796926] [2021-11-07 19:23:45,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110796926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:23:45,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:23:45,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:23:45,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944461189] [2021-11-07 19:23:45,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:23:45,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:23:45,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:23:45,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:23:45,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:23:45,169 INFO L87 Difference]: Start difference. First operand 124898 states and 165143 transitions. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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) [2021-11-07 19:23:47,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []