./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.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 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 19:38:53,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 19:38:53,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 19:38:53,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 19:38:53,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 19:38:53,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 19:38:53,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 19:38:53,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 19:38:53,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 19:38:53,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 19:38:53,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 19:38:53,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 19:38:53,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 19:38:53,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 19:38:53,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 19:38:53,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 19:38:53,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 19:38:53,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 19:38:53,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 19:38:53,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 19:38:53,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 19:38:53,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 19:38:53,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 19:38:53,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 19:38:53,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 19:38:53,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 19:38:53,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 19:38:53,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 19:38:53,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 19:38:53,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 19:38:53,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 19:38:53,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 19:38:53,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 19:38:53,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 19:38:53,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 19:38:53,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 19:38:53,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 19:38:53,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 19:38:53,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 19:38:53,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 19:38:53,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 19:38:53,173 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 19:38:53,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 19:38:53,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 19:38:53,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 19:38:53,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 19:38:53,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 19:38:53,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 19:38:53,215 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 19:38:53,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 19:38:53,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 19:38:53,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 19:38:53,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 19:38:53,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 19:38:53,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 19:38:53,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 19:38:53,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 19:38:53,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 19:38:53,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 19:38:53,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 19:38:53,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 19:38:53,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:38:53,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 19:38:53,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 19:38:53,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 19:38:53,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 19:38:53,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 19:38:53,220 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 19:38:53,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 19:38:53,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 19:38:53,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 19:38:53,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91e04004830698389104523fd95ec19013bffc6ed609cfb90049e6e93edb2bb3 [2021-11-05 19:38:53,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 19:38:53,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 19:38:53,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 19:38:53,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 19:38:53,584 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 19:38:53,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-11-05 19:38:53,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/304237904/3da2c76a4ac04765bb283ba3b115dde5/FLAGc207dbe5e [2021-11-05 19:38:54,357 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 19:38:54,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-11-05 19:38:54,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/304237904/3da2c76a4ac04765bb283ba3b115dde5/FLAGc207dbe5e [2021-11-05 19:38:54,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/304237904/3da2c76a4ac04765bb283ba3b115dde5 [2021-11-05 19:38:54,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 19:38:54,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 19:38:54,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 19:38:54,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 19:38:54,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 19:38:54,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:38:54" (1/1) ... [2021-11-05 19:38:54,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a511aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:54, skipping insertion in model container [2021-11-05 19:38:54,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:38:54" (1/1) ... [2021-11-05 19:38:54,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 19:38:54,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 19:38:55,470 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2021-11-05 19:38:55,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:38:55,504 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 19:38:55,694 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2021-11-05 19:38:55,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 19:38:55,747 INFO L208 MainTranslator]: Completed translation [2021-11-05 19:38:55,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55 WrapperNode [2021-11-05 19:38:55,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 19:38:55,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 19:38:55,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 19:38:55,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 19:38:55,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55" (1/1) ... [2021-11-05 19:38:55,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55" (1/1) ... [2021-11-05 19:38:56,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 19:38:56,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 19:38:56,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 19:38:56,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 19:38:56,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55" (1/1) ... [2021-11-05 19:38:56,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55" (1/1) ... [2021-11-05 19:38:57,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55" (1/1) ... [2021-11-05 19:38:57,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55" (1/1) ... [2021-11-05 19:38:57,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55" (1/1) ... [2021-11-05 19:38:57,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55" (1/1) ... [2021-11-05 19:38:58,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55" (1/1) ... [2021-11-05 19:38:58,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 19:38:58,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 19:38:58,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 19:38:58,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 19:38:58,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55" (1/1) ... [2021-11-05 19:38:58,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 19:38:58,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 19:38:58,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 19:38:58,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 19:38:58,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 19:38:58,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 19:38:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 19:38:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 19:38:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 19:38:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 19:38:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 19:38:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 19:38:58,291 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 19:38:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 19:38:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 19:38:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 19:38:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 19:38:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 19:38:58,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 19:38:58,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 19:39:12,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 19:39:12,019 INFO L299 CfgBuilder]: Removed 7514 assume(true) statements. [2021-11-05 19:39:12,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:39:12 BoogieIcfgContainer [2021-11-05 19:39:12,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 19:39:12,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 19:39:12,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 19:39:12,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 19:39:12,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:38:54" (1/3) ... [2021-11-05 19:39:12,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526140f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:39:12, skipping insertion in model container [2021-11-05 19:39:12,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:38:55" (2/3) ... [2021-11-05 19:39:12,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526140f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:39:12, skipping insertion in model container [2021-11-05 19:39:12,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:39:12" (3/3) ... [2021-11-05 19:39:12,035 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2021-11-05 19:39:12,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 19:39:12,040 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2021-11-05 19:39:12,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 19:39:12,106 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 19:39:12,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-11-05 19:39:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 6445 states, 6402 states have (on average 1.458294283036551) internal successors, (9336), 6444 states have internal predecessors, (9336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 19:39:12,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:39:12,218 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] [2021-11-05 19:39:12,219 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 19:39:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:39:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash 229863683, now seen corresponding path program 1 times [2021-11-05 19:39:12,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:39:12,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418285796] [2021-11-05 19:39:12,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:39:12,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:39:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:39:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:39:12,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:39:12,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418285796] [2021-11-05 19:39:12,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418285796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:39:12,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:39:12,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 19:39:12,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922748132] [2021-11-05 19:39:12,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:39:12,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 19:39:12,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:39:12,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 19:39:12,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:39:12,581 INFO L87 Difference]: Start difference. First operand has 6445 states, 6402 states have (on average 1.458294283036551) internal successors, (9336), 6444 states have internal predecessors, (9336), 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 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:39:12,884 INFO L93 Difference]: Finished difference Result 12886 states and 18666 transitions. [2021-11-05 19:39:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 19:39:12,886 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 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 63 [2021-11-05 19:39:12,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:39:12,939 INFO L225 Difference]: With dead ends: 12886 [2021-11-05 19:39:12,939 INFO L226 Difference]: Without dead ends: 6434 [2021-11-05 19:39:12,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 19:39:12,972 INFO L933 BasicCegarLoop]: 9241 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9241 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 19:39:12,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9241 Invalid, 0 Unknown, 0 Unchecked, 22.23ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 19:39:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2021-11-05 19:39:13,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 6434. [2021-11-05 19:39:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6434 states, 6392 states have (on average 1.4430538172715894) internal successors, (9224), 6433 states have internal predecessors, (9224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6434 states to 6434 states and 9224 transitions. [2021-11-05 19:39:13,220 INFO L78 Accepts]: Start accepts. Automaton has 6434 states and 9224 transitions. Word has length 63 [2021-11-05 19:39:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:39:13,221 INFO L470 AbstractCegarLoop]: Abstraction has 6434 states and 9224 transitions. [2021-11-05 19:39:13,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 6434 states and 9224 transitions. [2021-11-05 19:39:13,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 19:39:13,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:39:13,230 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] [2021-11-05 19:39:13,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 19:39:13,231 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 19:39:13,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:39:13,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1966664585, now seen corresponding path program 1 times [2021-11-05 19:39:13,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:39:13,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4911688] [2021-11-05 19:39:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:39:13,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:39:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:39:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:39:13,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:39:13,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4911688] [2021-11-05 19:39:13,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4911688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:39:13,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:39:13,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 19:39:13,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616420041] [2021-11-05 19:39:13,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:39:13,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 19:39:13,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:39:13,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 19:39:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:39:13,458 INFO L87 Difference]: Start difference. First operand 6434 states and 9224 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:39:13,834 INFO L93 Difference]: Finished difference Result 16860 states and 24158 transitions. [2021-11-05 19:39:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 19:39:13,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-05 19:39:13,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:39:13,883 INFO L225 Difference]: With dead ends: 16860 [2021-11-05 19:39:13,883 INFO L226 Difference]: Without dead ends: 10485 [2021-11-05 19:39:13,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 19:39:13,905 INFO L933 BasicCegarLoop]: 9223 mSDtfsCounter, 5838 mSDsluCounter, 9120 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5838 SdHoareTripleChecker+Valid, 18343 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.26ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.48ms IncrementalHoareTripleChecker+Time [2021-11-05 19:39:13,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5838 Valid, 18343 Invalid, 38 Unknown, 0 Unchecked, 32.26ms Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 62.48ms Time] [2021-11-05 19:39:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10485 states. [2021-11-05 19:39:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10485 to 10437. [2021-11-05 19:39:14,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10437 states, 10395 states have (on average 1.4407888407888407) internal successors, (14977), 10436 states have internal predecessors, (14977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10437 states to 10437 states and 14977 transitions. [2021-11-05 19:39:14,439 INFO L78 Accepts]: Start accepts. Automaton has 10437 states and 14977 transitions. Word has length 63 [2021-11-05 19:39:14,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:39:14,439 INFO L470 AbstractCegarLoop]: Abstraction has 10437 states and 14977 transitions. [2021-11-05 19:39:14,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:14,440 INFO L276 IsEmpty]: Start isEmpty. Operand 10437 states and 14977 transitions. [2021-11-05 19:39:14,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 19:39:14,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:39:14,442 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] [2021-11-05 19:39:14,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 19:39:14,442 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 19:39:14,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:39:14,443 INFO L85 PathProgramCache]: Analyzing trace with hash -404925101, now seen corresponding path program 1 times [2021-11-05 19:39:14,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:39:14,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777296803] [2021-11-05 19:39:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:39:14,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:39:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:39:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:39:14,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:39:14,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777296803] [2021-11-05 19:39:14,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777296803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:39:14,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:39:14,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:39:14,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930034442] [2021-11-05 19:39:14,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:39:14,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:39:14,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:39:14,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:39:14,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:39:14,585 INFO L87 Difference]: Start difference. First operand 10437 states and 14977 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2021-11-05 19:39:17,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:39:17,054 INFO L93 Difference]: Finished difference Result 47549 states and 68047 transitions. [2021-11-05 19:39:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:39:17,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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 [2021-11-05 19:39:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:39:17,206 INFO L225 Difference]: With dead ends: 47549 [2021-11-05 19:39:17,207 INFO L226 Difference]: Without dead ends: 37171 [2021-11-05 19:39:17,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.83ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:39:17,247 INFO L933 BasicCegarLoop]: 10903 mSDtfsCounter, 41978 mSDsluCounter, 24880 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1002.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41978 SdHoareTripleChecker+Valid, 35783 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 92.65ms SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1227.75ms IncrementalHoareTripleChecker+Time [2021-11-05 19:39:17,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41978 Valid, 35783 Invalid, 1352 Unknown, 0 Unchecked, 92.65ms Time], IncrementalHoareTripleChecker [363 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 1227.75ms Time] [2021-11-05 19:39:17,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37171 states. [2021-11-05 19:39:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37171 to 36896. [2021-11-05 19:39:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36896 states, 36854 states have (on average 1.4281489119227222) internal successors, (52633), 36895 states have internal predecessors, (52633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:18,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36896 states to 36896 states and 52633 transitions. [2021-11-05 19:39:18,351 INFO L78 Accepts]: Start accepts. Automaton has 36896 states and 52633 transitions. Word has length 66 [2021-11-05 19:39:18,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:39:18,353 INFO L470 AbstractCegarLoop]: Abstraction has 36896 states and 52633 transitions. [2021-11-05 19:39:18,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 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) [2021-11-05 19:39:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 36896 states and 52633 transitions. [2021-11-05 19:39:18,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 19:39:18,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:39:18,355 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] [2021-11-05 19:39:18,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 19:39:18,356 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 19:39:18,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:39:18,357 INFO L85 PathProgramCache]: Analyzing trace with hash 136692814, now seen corresponding path program 1 times [2021-11-05 19:39:18,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:39:18,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122430185] [2021-11-05 19:39:18,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:39:18,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:39:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:39:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:39:18,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:39:18,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122430185] [2021-11-05 19:39:18,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122430185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:39:18,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:39:18,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:39:18,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181244437] [2021-11-05 19:39:18,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:39:18,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:39:18,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:39:18,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:39:18,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:39:18,498 INFO L87 Difference]: Start difference. First operand 36896 states and 52633 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:22,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:39:22,601 INFO L93 Difference]: Finished difference Result 167932 states and 239209 transitions. [2021-11-05 19:39:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:39:22,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2021-11-05 19:39:22,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:39:23,338 INFO L225 Difference]: With dead ends: 167932 [2021-11-05 19:39:23,338 INFO L226 Difference]: Without dead ends: 131095 [2021-11-05 19:39:23,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.57ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:39:23,442 INFO L933 BasicCegarLoop]: 9591 mSDtfsCounter, 24946 mSDsluCounter, 39813 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1090.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24946 SdHoareTripleChecker+Valid, 49404 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 67.83ms SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1355.63ms IncrementalHoareTripleChecker+Time [2021-11-05 19:39:23,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24946 Valid, 49404 Invalid, 1854 Unknown, 0 Unchecked, 67.83ms Time], IncrementalHoareTripleChecker [299 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1355.63ms Time] [2021-11-05 19:39:23,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131095 states. [2021-11-05 19:39:26,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131095 to 130777. [2021-11-05 19:39:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130777 states, 130735 states have (on average 1.4186713580907944) internal successors, (185470), 130776 states have internal predecessors, (185470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:27,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130777 states to 130777 states and 185470 transitions. [2021-11-05 19:39:27,266 INFO L78 Accepts]: Start accepts. Automaton has 130777 states and 185470 transitions. Word has length 67 [2021-11-05 19:39:27,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:39:27,267 INFO L470 AbstractCegarLoop]: Abstraction has 130777 states and 185470 transitions. [2021-11-05 19:39:27,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:27,267 INFO L276 IsEmpty]: Start isEmpty. Operand 130777 states and 185470 transitions. [2021-11-05 19:39:27,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 19:39:27,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:39:27,269 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] [2021-11-05 19:39:27,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 19:39:27,269 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 19:39:27,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:39:27,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1320272040, now seen corresponding path program 1 times [2021-11-05 19:39:27,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:39:27,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112726763] [2021-11-05 19:39:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:39:27,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:39:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:39:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:39:27,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:39:27,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112726763] [2021-11-05 19:39:27,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112726763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:39:27,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:39:27,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:39:27,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354041879] [2021-11-05 19:39:27,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:39:27,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:39:27,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:39:27,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:39:27,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:39:27,345 INFO L87 Difference]: Start difference. First operand 130777 states and 185470 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 19:39:35,966 INFO L93 Difference]: Finished difference Result 590105 states and 836150 transitions. [2021-11-05 19:39:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 19:39:35,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2021-11-05 19:39:35,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 19:39:37,432 INFO L225 Difference]: With dead ends: 590105 [2021-11-05 19:39:37,432 INFO L226 Difference]: Without dead ends: 459387 [2021-11-05 19:39:37,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.46ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:39:37,741 INFO L933 BasicCegarLoop]: 9513 mSDtfsCounter, 32580 mSDsluCounter, 30216 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 848.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32580 SdHoareTripleChecker+Valid, 39729 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 47.61ms SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1068.16ms IncrementalHoareTripleChecker+Time [2021-11-05 19:39:37,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32580 Valid, 39729 Invalid, 1463 Unknown, 0 Unchecked, 47.61ms Time], IncrementalHoareTripleChecker [309 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 1068.16ms Time] [2021-11-05 19:39:38,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459387 states. [2021-11-05 19:39:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459387 to 458995. [2021-11-05 19:39:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458995 states, 458953 states have (on average 1.4110203005536515) internal successors, (647592), 458994 states have internal predecessors, (647592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458995 states to 458995 states and 647592 transitions. [2021-11-05 19:39:50,337 INFO L78 Accepts]: Start accepts. Automaton has 458995 states and 647592 transitions. Word has length 68 [2021-11-05 19:39:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 19:39:50,338 INFO L470 AbstractCegarLoop]: Abstraction has 458995 states and 647592 transitions. [2021-11-05 19:39:50,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 19:39:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 458995 states and 647592 transitions. [2021-11-05 19:39:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 19:39:50,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 19:39:50,339 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] [2021-11-05 19:39:50,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 19:39:50,340 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-05 19:39:50,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 19:39:50,340 INFO L85 PathProgramCache]: Analyzing trace with hash 550874627, now seen corresponding path program 1 times [2021-11-05 19:39:50,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 19:39:50,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629458917] [2021-11-05 19:39:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 19:39:50,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 19:39:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 19:39:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 19:39:50,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 19:39:50,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629458917] [2021-11-05 19:39:50,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629458917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 19:39:50,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 19:39:50,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 19:39:50,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512104886] [2021-11-05 19:39:50,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 19:39:50,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 19:39:50,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 19:39:50,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 19:39:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-05 19:39:50,422 INFO L87 Difference]: Start difference. First operand 458995 states and 647592 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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)