./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.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 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:59:48,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:59:48,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:59:48,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:59:48,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:59:48,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:59:48,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:59:48,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:59:48,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:59:48,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:59:48,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:59:48,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:59:48,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:59:48,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:59:48,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:59:48,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:59:48,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:59:48,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:59:48,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:59:48,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:59:48,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:59:48,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:59:48,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:59:48,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:59:48,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:59:48,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:59:48,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:59:48,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:59:48,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:59:48,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:59:48,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:59:48,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:59:48,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:59:48,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:59:48,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:59:48,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:59:48,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:59:48,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:59:48,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:59:48,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:59:48,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:59:48,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:59:48,845 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:59:48,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:59:48,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:59:48,846 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:59:48,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:59:48,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:59:48,847 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:59:48,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:59:48,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:59:48,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:59:48,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:59:48,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:59:48,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:59:48,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:59:48,849 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:59:48,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:59:48,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:59:48,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:59:48,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:59:48,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:59:48,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:59:48,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:59:48,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:59:48,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:59:48,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:59:48,851 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:59:48,851 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:59:48,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:59:48,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:59:48,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a [2021-11-06 18:59:49,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:59:49,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:59:49,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:59:49,053 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:59:49,054 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:59:49,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-06 18:59:49,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a8c55455/d0c86e275f7e411c9d83355c1edbc6ec/FLAGc7cea3b7e [2021-11-06 18:59:49,696 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:59:49,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-06 18:59:49,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a8c55455/d0c86e275f7e411c9d83355c1edbc6ec/FLAGc7cea3b7e [2021-11-06 18:59:50,127 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a8c55455/d0c86e275f7e411c9d83355c1edbc6ec [2021-11-06 18:59:50,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:59:50,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:59:50,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:59:50,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:59:50,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:59:50,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:59:50" (1/1) ... [2021-11-06 18:59:50,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6dcbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:50, skipping insertion in model container [2021-11-06 18:59:50,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:59:50" (1/1) ... [2021-11-06 18:59:50,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:59:50,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:59:51,807 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-06 18:59:51,809 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-06 18:59:51,810 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-06 18:59:51,810 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-06 18:59:51,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:59:51,895 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:59:52,107 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-06 18:59:52,108 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-06 18:59:52,108 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-06 18:59:52,109 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-06 18:59:52,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:59:52,276 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:59:52,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52 WrapperNode [2021-11-06 18:59:52,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:59:52,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:59:52,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:59:52,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:59:52,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52" (1/1) ... [2021-11-06 18:59:52,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52" (1/1) ... [2021-11-06 18:59:52,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:59:52,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:59:52,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:59:52,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:59:52,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52" (1/1) ... [2021-11-06 18:59:52,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52" (1/1) ... [2021-11-06 18:59:52,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52" (1/1) ... [2021-11-06 18:59:52,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52" (1/1) ... [2021-11-06 18:59:53,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52" (1/1) ... [2021-11-06 18:59:53,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52" (1/1) ... [2021-11-06 18:59:53,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52" (1/1) ... [2021-11-06 18:59:53,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:59:53,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:59:53,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:59:53,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:59:53,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52" (1/1) ... [2021-11-06 18:59:53,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:59:53,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:59:53,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 18:59:53,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 18:59:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:59:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:59:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:59:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:59:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:59:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:59:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:59:53,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:59:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:59:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:59:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:59:53,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:59:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:59:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:59:53,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:59:59,425 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:59:59,425 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:59:59,425 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:59:59,426 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:59:59,426 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:59:59,426 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:59:59,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:59:59,452 INFO L299 CfgBuilder]: Removed 3826 assume(true) statements. [2021-11-06 18:59:59,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:59:59 BoogieIcfgContainer [2021-11-06 18:59:59,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:59:59,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:59:59,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:59:59,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:59:59,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:59:50" (1/3) ... [2021-11-06 18:59:59,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652d7880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:59:59, skipping insertion in model container [2021-11-06 18:59:59,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:59:52" (2/3) ... [2021-11-06 18:59:59,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652d7880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:59:59, skipping insertion in model container [2021-11-06 18:59:59,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:59:59" (3/3) ... [2021-11-06 18:59:59,463 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-06 18:59:59,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:59:59,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-11-06 18:59:59,514 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:59:59,518 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 18:59:59,518 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-11-06 18:59:59,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 3689 states, 3628 states have (on average 1.3321389195148843) internal successors, (4833), 3688 states have internal predecessors, (4833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 18:59:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 18:59:59,561 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:59:59,561 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:59:59,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 18:59:59,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:59:59,566 INFO L85 PathProgramCache]: Analyzing trace with hash -967687657, now seen corresponding path program 1 times [2021-11-06 18:59:59,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:59:59,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142327416] [2021-11-06 18:59:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:59:59,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:59:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:59:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 18:59:59,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:59:59,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142327416] [2021-11-06 18:59:59,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142327416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:59:59,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:59:59,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:59:59,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171668238] [2021-11-06 18:59:59,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:59:59,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:59:59,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:59:59,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:59:59,965 INFO L87 Difference]: Start difference. First operand has 3689 states, 3628 states have (on average 1.3321389195148843) internal successors, (4833), 3688 states have internal predecessors, (4833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:01,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:01,055 INFO L93 Difference]: Finished difference Result 10272 states and 13449 transitions. [2021-11-06 19:00:01,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:01,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-06 19:00:01,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:01,086 INFO L225 Difference]: With dead ends: 10272 [2021-11-06 19:00:01,086 INFO L226 Difference]: Without dead ends: 6399 [2021-11-06 19:00:01,096 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:01,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2021-11-06 19:00:01,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5969. [2021-11-06 19:00:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5969 states, 5908 states have (on average 1.2808056872037914) internal successors, (7567), 5968 states have internal predecessors, (7567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5969 states to 5969 states and 7567 transitions. [2021-11-06 19:00:01,263 INFO L78 Accepts]: Start accepts. Automaton has 5969 states and 7567 transitions. Word has length 43 [2021-11-06 19:00:01,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:01,264 INFO L470 AbstractCegarLoop]: Abstraction has 5969 states and 7567 transitions. [2021-11-06 19:00:01,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:01,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5969 states and 7567 transitions. [2021-11-06 19:00:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 19:00:01,270 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:01,270 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:00:01,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:00:01,271 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:00:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -113139560, now seen corresponding path program 1 times [2021-11-06 19:00:01,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:01,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305457156] [2021-11-06 19:00:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:01,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:00:01,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:01,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305457156] [2021-11-06 19:00:01,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305457156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:01,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:01,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:01,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96652585] [2021-11-06 19:00:01,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:01,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:01,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:01,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:01,424 INFO L87 Difference]: Start difference. First operand 5969 states and 7567 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:02,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:02,194 INFO L93 Difference]: Finished difference Result 17513 states and 22286 transitions. [2021-11-06 19:00:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:02,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 19:00:02,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:02,229 INFO L225 Difference]: With dead ends: 17513 [2021-11-06 19:00:02,230 INFO L226 Difference]: Without dead ends: 11620 [2021-11-06 19:00:02,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:02,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2021-11-06 19:00:02,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 11576. [2021-11-06 19:00:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11576 states, 11515 states have (on average 1.2825010855405992) internal successors, (14768), 11575 states have internal predecessors, (14768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11576 states to 11576 states and 14768 transitions. [2021-11-06 19:00:02,468 INFO L78 Accepts]: Start accepts. Automaton has 11576 states and 14768 transitions. Word has length 45 [2021-11-06 19:00:02,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:02,468 INFO L470 AbstractCegarLoop]: Abstraction has 11576 states and 14768 transitions. [2021-11-06 19:00:02,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:02,469 INFO L276 IsEmpty]: Start isEmpty. Operand 11576 states and 14768 transitions. [2021-11-06 19:00:02,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-06 19:00:02,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:02,470 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:00:02,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:00:02,470 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:00:02,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:02,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1292504363, now seen corresponding path program 1 times [2021-11-06 19:00:02,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:02,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495640746] [2021-11-06 19:00:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:02,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:00:02,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:02,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495640746] [2021-11-06 19:00:02,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495640746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:02,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:02,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:02,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551521052] [2021-11-06 19:00:02,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:02,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:02,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:02,598 INFO L87 Difference]: Start difference. First operand 11576 states and 14768 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:03,337 INFO L93 Difference]: Finished difference Result 32556 states and 41586 transitions. [2021-11-06 19:00:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:03,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-06 19:00:03,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:03,387 INFO L225 Difference]: With dead ends: 32556 [2021-11-06 19:00:03,387 INFO L226 Difference]: Without dead ends: 21056 [2021-11-06 19:00:03,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:03,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21056 states. [2021-11-06 19:00:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21056 to 20518. [2021-11-06 19:00:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20518 states, 20457 states have (on average 1.2861123331866842) internal successors, (26310), 20517 states have internal predecessors, (26310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20518 states to 20518 states and 26310 transitions. [2021-11-06 19:00:03,789 INFO L78 Accepts]: Start accepts. Automaton has 20518 states and 26310 transitions. Word has length 46 [2021-11-06 19:00:03,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:03,789 INFO L470 AbstractCegarLoop]: Abstraction has 20518 states and 26310 transitions. [2021-11-06 19:00:03,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 20518 states and 26310 transitions. [2021-11-06 19:00:03,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-06 19:00:03,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:03,791 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:00:03,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:00:03,791 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:00:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1026351272, now seen corresponding path program 1 times [2021-11-06 19:00:03,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:03,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640621174] [2021-11-06 19:00:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:03,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:00:03,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:03,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640621174] [2021-11-06 19:00:03,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640621174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:03,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:03,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:03,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197926502] [2021-11-06 19:00:03,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:03,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:03,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:03,870 INFO L87 Difference]: Start difference. First operand 20518 states and 26310 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:04,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:04,747 INFO L93 Difference]: Finished difference Result 35921 states and 46039 transitions. [2021-11-06 19:00:04,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:04,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-06 19:00:04,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:04,784 INFO L225 Difference]: With dead ends: 35921 [2021-11-06 19:00:04,784 INFO L226 Difference]: Without dead ends: 15479 [2021-11-06 19:00:04,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:04,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15479 states. [2021-11-06 19:00:05,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15479 to 15361. [2021-11-06 19:00:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15361 states, 15300 states have (on average 1.2822875816993464) internal successors, (19619), 15360 states have internal predecessors, (19619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15361 states to 15361 states and 19619 transitions. [2021-11-06 19:00:05,165 INFO L78 Accepts]: Start accepts. Automaton has 15361 states and 19619 transitions. Word has length 48 [2021-11-06 19:00:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:05,166 INFO L470 AbstractCegarLoop]: Abstraction has 15361 states and 19619 transitions. [2021-11-06 19:00:05,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:05,166 INFO L276 IsEmpty]: Start isEmpty. Operand 15361 states and 19619 transitions. [2021-11-06 19:00:05,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 19:00:05,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:05,167 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:00:05,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 19:00:05,168 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:00:05,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:05,168 INFO L85 PathProgramCache]: Analyzing trace with hash 950652540, now seen corresponding path program 1 times [2021-11-06 19:00:05,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:05,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450140883] [2021-11-06 19:00:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:05,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:00:05,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:05,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450140883] [2021-11-06 19:00:05,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450140883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:05,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:05,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:05,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556706543] [2021-11-06 19:00:05,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:05,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:05,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:05,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:05,262 INFO L87 Difference]: Start difference. First operand 15361 states and 19619 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:05,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:05,994 INFO L93 Difference]: Finished difference Result 40436 states and 51756 transitions. [2021-11-06 19:00:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:05,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-06 19:00:05,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:06,054 INFO L225 Difference]: With dead ends: 40436 [2021-11-06 19:00:06,054 INFO L226 Difference]: Without dead ends: 25151 [2021-11-06 19:00:06,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:06,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25151 states. [2021-11-06 19:00:06,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25151 to 24707. [2021-11-06 19:00:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24707 states, 24646 states have (on average 1.2857664529741135) internal successors, (31689), 24706 states have internal predecessors, (31689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:06,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24707 states to 24707 states and 31689 transitions. [2021-11-06 19:00:06,576 INFO L78 Accepts]: Start accepts. Automaton has 24707 states and 31689 transitions. Word has length 49 [2021-11-06 19:00:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:06,576 INFO L470 AbstractCegarLoop]: Abstraction has 24707 states and 31689 transitions. [2021-11-06 19:00:06,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 24707 states and 31689 transitions. [2021-11-06 19:00:06,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-06 19:00:06,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:06,578 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:00:06,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 19:00:06,579 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:00:06,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash -960392490, now seen corresponding path program 1 times [2021-11-06 19:00:06,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:06,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122700095] [2021-11-06 19:00:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:06,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:00:06,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:06,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122700095] [2021-11-06 19:00:06,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122700095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:06,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:06,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:06,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003914504] [2021-11-06 19:00:06,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:06,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:06,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:06,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:06,699 INFO L87 Difference]: Start difference. First operand 24707 states and 31689 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:07,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:07,608 INFO L93 Difference]: Finished difference Result 72950 states and 93628 transitions. [2021-11-06 19:00:07,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:07,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-06 19:00:07,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:07,705 INFO L225 Difference]: With dead ends: 72950 [2021-11-06 19:00:07,705 INFO L226 Difference]: Without dead ends: 48319 [2021-11-06 19:00:07,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48319 states. [2021-11-06 19:00:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48319 to 48009. [2021-11-06 19:00:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48009 states, 47948 states have (on average 1.2865604404771835) internal successors, (61688), 48008 states have internal predecessors, (61688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48009 states to 48009 states and 61688 transitions. [2021-11-06 19:00:08,711 INFO L78 Accepts]: Start accepts. Automaton has 48009 states and 61688 transitions. Word has length 61 [2021-11-06 19:00:08,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:08,711 INFO L470 AbstractCegarLoop]: Abstraction has 48009 states and 61688 transitions. [2021-11-06 19:00:08,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:08,712 INFO L276 IsEmpty]: Start isEmpty. Operand 48009 states and 61688 transitions. [2021-11-06 19:00:08,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 19:00:08,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:08,713 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:00:08,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 19:00:08,715 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:00:08,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:08,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1943570088, now seen corresponding path program 1 times [2021-11-06 19:00:08,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:08,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377807105] [2021-11-06 19:00:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:08,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:00:08,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:08,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377807105] [2021-11-06 19:00:08,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377807105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:08,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:08,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:08,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487700757] [2021-11-06 19:00:08,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:08,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:08,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:08,813 INFO L87 Difference]: Start difference. First operand 48009 states and 61688 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:10,820 INFO L93 Difference]: Finished difference Result 142595 states and 183443 transitions. [2021-11-06 19:00:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:10,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-06 19:00:10,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:11,010 INFO L225 Difference]: With dead ends: 142595 [2021-11-06 19:00:11,011 INFO L226 Difference]: Without dead ends: 94713 [2021-11-06 19:00:11,096 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94713 states. [2021-11-06 19:00:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94713 to 94669. [2021-11-06 19:00:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94669 states, 94608 states have (on average 1.2865296803652968) internal successors, (121716), 94668 states have internal predecessors, (121716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:13,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94669 states to 94669 states and 121716 transitions. [2021-11-06 19:00:13,243 INFO L78 Accepts]: Start accepts. Automaton has 94669 states and 121716 transitions. Word has length 74 [2021-11-06 19:00:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:13,244 INFO L470 AbstractCegarLoop]: Abstraction has 94669 states and 121716 transitions. [2021-11-06 19:00:13,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 94669 states and 121716 transitions. [2021-11-06 19:00:13,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 19:00:13,251 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:13,251 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:00:13,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 19:00:13,251 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:00:13,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:13,252 INFO L85 PathProgramCache]: Analyzing trace with hash 663706410, now seen corresponding path program 1 times [2021-11-06 19:00:13,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:13,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620052962] [2021-11-06 19:00:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:13,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 19:00:13,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:13,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620052962] [2021-11-06 19:00:13,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620052962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:13,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:13,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:13,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546133774] [2021-11-06 19:00:13,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:00:13,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:13,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:00:13,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:13,343 INFO L87 Difference]: Start difference. First operand 94669 states and 121716 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:16,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:16,359 INFO L93 Difference]: Finished difference Result 235947 states and 303563 transitions. [2021-11-06 19:00:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:00:16,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-06 19:00:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:16,655 INFO L225 Difference]: With dead ends: 235947 [2021-11-06 19:00:16,655 INFO L226 Difference]: Without dead ends: 141405 [2021-11-06 19:00:16,771 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:00:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141405 states. [2021-11-06 19:00:19,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141405 to 141144. [2021-11-06 19:00:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141144 states, 141083 states have (on average 1.286894948363729) internal successors, (181559), 141143 states have internal predecessors, (181559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:20,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141144 states to 141144 states and 181559 transitions. [2021-11-06 19:00:20,065 INFO L78 Accepts]: Start accepts. Automaton has 141144 states and 181559 transitions. Word has length 74 [2021-11-06 19:00:20,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:20,065 INFO L470 AbstractCegarLoop]: Abstraction has 141144 states and 181559 transitions. [2021-11-06 19:00:20,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:20,065 INFO L276 IsEmpty]: Start isEmpty. Operand 141144 states and 181559 transitions. [2021-11-06 19:00:20,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 19:00:20,066 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:20,066 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:00:20,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 19:00:20,066 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:00:20,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:20,067 INFO L85 PathProgramCache]: Analyzing trace with hash 820923817, now seen corresponding path program 1 times [2021-11-06 19:00:20,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:20,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739219343] [2021-11-06 19:00:20,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:20,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:00:20,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:20,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739219343] [2021-11-06 19:00:20,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739219343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:20,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:20,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:20,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782613510] [2021-11-06 19:00:20,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:20,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:20,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:20,521 INFO L87 Difference]: Start difference. First operand 141144 states and 181559 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:23,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:23,045 INFO L93 Difference]: Finished difference Result 141144 states and 181559 transitions. [2021-11-06 19:00:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:23,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-06 19:00:23,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:23,361 INFO L225 Difference]: With dead ends: 141144 [2021-11-06 19:00:23,361 INFO L226 Difference]: Without dead ends: 141138 [2021-11-06 19:00:23,415 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:00:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141138 states. [2021-11-06 19:00:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141138 to 141138. [2021-11-06 19:00:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141138 states, 141080 states have (on average 1.2868797845194215) internal successors, (181553), 141137 states have internal predecessors, (181553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141138 states to 141138 states and 181553 transitions. [2021-11-06 19:00:27,026 INFO L78 Accepts]: Start accepts. Automaton has 141138 states and 181553 transitions. Word has length 75 [2021-11-06 19:00:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:27,026 INFO L470 AbstractCegarLoop]: Abstraction has 141138 states and 181553 transitions. [2021-11-06 19:00:27,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:27,027 INFO L276 IsEmpty]: Start isEmpty. Operand 141138 states and 181553 transitions. [2021-11-06 19:00:27,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 19:00:27,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:27,028 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:00:27,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 19:00:27,028 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:00:27,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:27,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1366046868, now seen corresponding path program 1 times [2021-11-06 19:00:27,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:27,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035342265] [2021-11-06 19:00:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:27,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:00:27,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:27,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035342265] [2021-11-06 19:00:27,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035342265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:27,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:27,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:27,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728757933] [2021-11-06 19:00:27,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:27,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:27,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:27,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:27,161 INFO L87 Difference]: Start difference. First operand 141138 states and 181553 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 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) [2021-11-06 19:00:30,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:30,014 INFO L93 Difference]: Finished difference Result 141138 states and 181553 transitions. [2021-11-06 19:00:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:30,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 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 77 [2021-11-06 19:00:30,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:30,288 INFO L225 Difference]: With dead ends: 141138 [2021-11-06 19:00:30,288 INFO L226 Difference]: Without dead ends: 141132 [2021-11-06 19:00:30,341 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:00:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141132 states. [2021-11-06 19:00:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141132 to 141132. [2021-11-06 19:00:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141132 states, 141077 states have (on average 1.2868646200301963) internal successors, (181547), 141131 states have internal predecessors, (181547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:33,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141132 states to 141132 states and 181547 transitions. [2021-11-06 19:00:33,867 INFO L78 Accepts]: Start accepts. Automaton has 141132 states and 181547 transitions. Word has length 77 [2021-11-06 19:00:33,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:00:33,867 INFO L470 AbstractCegarLoop]: Abstraction has 141132 states and 181547 transitions. [2021-11-06 19:00:33,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 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) [2021-11-06 19:00:33,867 INFO L276 IsEmpty]: Start isEmpty. Operand 141132 states and 181547 transitions. [2021-11-06 19:00:33,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 19:00:33,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:00:33,871 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 19:00:33,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 19:00:33,872 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-06 19:00:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:00:33,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1489100207, now seen corresponding path program 1 times [2021-11-06 19:00:33,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:00:33,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107805111] [2021-11-06 19:00:33,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:00:33,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:00:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:00:33,973 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-06 19:00:33,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:00:33,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107805111] [2021-11-06 19:00:33,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107805111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:00:33,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:00:33,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:00:33,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634827811] [2021-11-06 19:00:33,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 19:00:33,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:00:33,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 19:00:33,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 19:00:33,975 INFO L87 Difference]: Start difference. First operand 141132 states and 181547 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 19:00:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:00:36,617 INFO L93 Difference]: Finished difference Result 141132 states and 181547 transitions. [2021-11-06 19:00:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 19:00:36,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-06 19:00:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:00:36,901 INFO L225 Difference]: With dead ends: 141132 [2021-11-06 19:00:36,902 INFO L226 Difference]: Without dead ends: 141126 [2021-11-06 19:00:36,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 19:00:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141126 states.