./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e8e67529e4f1862dffb4b20b34b9723f96164119a4ebff5a58d56eaf6134a8d1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 01:37:32,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:37:32,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:37:32,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:37:32,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:37:32,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:37:32,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:37:32,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:37:32,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:37:32,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:37:32,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:37:32,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:37:32,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:37:32,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:37:32,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:37:32,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:37:32,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:37:32,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:37:32,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:37:32,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:37:32,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:37:32,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:37:32,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:37:32,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:37:32,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:37:32,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:37:32,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:37:32,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:37:32,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:37:32,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:37:32,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:37:32,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:37:32,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:37:32,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:37:32,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:37:32,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:37:32,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:37:32,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:37:32,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:37:32,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:37:32,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:37:32,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 01:37:32,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:37:32,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:37:32,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:37:32,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:37:32,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:37:32,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:37:32,844 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 01:37:32,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:37:32,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:37:32,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:37:32,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:37:32,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:37:32,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:37:32,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:37:32,846 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:37:32,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:37:32,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:37:32,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 01:37:32,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:37:32,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:37:32,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:37:32,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:37:32,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:37:32,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 01:37:32,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:37:32,848 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 01:37:32,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 01:37:32,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:37:32,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:37:32,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8e67529e4f1862dffb4b20b34b9723f96164119a4ebff5a58d56eaf6134a8d1 [2021-11-23 01:37:33,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:37:33,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:37:33,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:37:33,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:37:33,083 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:37:33,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2021-11-23 01:37:33,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8613564/5894d9467daa4fcaa26a399a611dbcf2/FLAG779642a89 [2021-11-23 01:37:33,789 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:37:33,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2021-11-23 01:37:33,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8613564/5894d9467daa4fcaa26a399a611dbcf2/FLAG779642a89 [2021-11-23 01:37:34,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac8613564/5894d9467daa4fcaa26a399a611dbcf2 [2021-11-23 01:37:34,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:37:34,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:37:34,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:37:34,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:37:34,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:37:34,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec01739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34, skipping insertion in model container [2021-11-23 01:37:34,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,186 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:37:34,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:37:35,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i[283284,283297] [2021-11-23 01:37:35,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:37:35,276 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:37:35,522 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i[283284,283297] [2021-11-23 01:37:35,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:37:35,593 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:37:35,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35 WrapperNode [2021-11-23 01:37:35,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:37:35,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:37:35,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:37:35,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:37:35,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35" (1/1) ... [2021-11-23 01:37:35,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35" (1/1) ... [2021-11-23 01:37:37,824 INFO L137 Inliner]: procedures = 215, calls = 1656, calls flagged for inlining = 399, calls inlined = 11315, statements flattened = 126485 [2021-11-23 01:37:37,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:37:37,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:37:37,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:37:37,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:37:37,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35" (1/1) ... [2021-11-23 01:37:37,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35" (1/1) ... [2021-11-23 01:37:38,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35" (1/1) ... [2021-11-23 01:37:38,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35" (1/1) ... [2021-11-23 01:37:39,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35" (1/1) ... [2021-11-23 01:37:40,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35" (1/1) ... [2021-11-23 01:37:40,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35" (1/1) ... [2021-11-23 01:37:40,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:37:40,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:37:40,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:37:40,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:37:40,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35" (1/1) ... [2021-11-23 01:37:40,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:37:40,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 01:37:40,763 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) [2021-11-23 01:37:40,771 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 [2021-11-23 01:37:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 01:37:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 01:37:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:37:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:37:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:37:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 01:37:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 01:37:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 01:37:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:37:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:37:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:37:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:37:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:37:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:37:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:37:40,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:37:41,288 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:37:41,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:38:48,615 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:38:48,672 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:38:48,672 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:38:48,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:38:48 BoogieIcfgContainer [2021-11-23 01:38:48,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:38:48,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 01:38:48,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 01:38:48,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 01:38:48,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:37:34" (1/3) ... [2021-11-23 01:38:48,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ee579a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:38:48, skipping insertion in model container [2021-11-23 01:38:48,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:35" (2/3) ... [2021-11-23 01:38:48,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ee579a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:38:48, skipping insertion in model container [2021-11-23 01:38:48,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:38:48" (3/3) ... [2021-11-23 01:38:48,694 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2021-11-23 01:38:48,698 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 01:38:48,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2021-11-23 01:38:48,776 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 01:38:48,781 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 [2021-11-23 01:38:48,781 INFO L340 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2021-11-23 01:38:48,967 INFO L276 IsEmpty]: Start isEmpty. Operand has 18932 states, 18881 states have (on average 1.309517504369472) internal successors, (24725), 18931 states have internal predecessors, (24725), 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) [2021-11-23 01:38:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 01:38:48,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:38:48,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:38:48,994 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-23 01:38:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:38:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2036005404, now seen corresponding path program 1 times [2021-11-23 01:38:49,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:38:49,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861057832] [2021-11-23 01:38:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:38:49,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:38:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:38:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:38:49,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:38:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861057832] [2021-11-23 01:38:49,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861057832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:38:49,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:38:49,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 01:38:49,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608189614] [2021-11-23 01:38:49,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:38:49,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 01:38:49,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:38:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 01:38:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:38:49,441 INFO L87 Difference]: Start difference. First operand has 18932 states, 18881 states have (on average 1.309517504369472) internal successors, (24725), 18931 states have internal predecessors, (24725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:38:49,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:38:49,839 INFO L93 Difference]: Finished difference Result 37810 states and 49395 transitions. [2021-11-23 01:38:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 01:38:49,842 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-23 01:38:49,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:38:49,936 INFO L225 Difference]: With dead ends: 37810 [2021-11-23 01:38:49,937 INFO L226 Difference]: Without dead ends: 18688 [2021-11-23 01:38:49,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 01:38:49,986 INFO L933 BasicCegarLoop]: 24561 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24561 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 01:38:49,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24561 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 01:38:50,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18688 states. [2021-11-23 01:38:50,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18688 to 18688. [2021-11-23 01:38:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18688 states, 18638 states have (on average 1.297456808670458) internal successors, (24182), 18687 states have internal predecessors, (24182), 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) [2021-11-23 01:38:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18688 states to 18688 states and 24182 transitions. [2021-11-23 01:38:50,744 INFO L78 Accepts]: Start accepts. Automaton has 18688 states and 24182 transitions. Word has length 60 [2021-11-23 01:38:50,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:38:50,744 INFO L470 AbstractCegarLoop]: Abstraction has 18688 states and 24182 transitions. [2021-11-23 01:38:50,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:38:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 18688 states and 24182 transitions. [2021-11-23 01:38:50,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 01:38:50,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:38:50,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:38:50,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 01:38:50,753 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-23 01:38:50,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:38:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash -346706198, now seen corresponding path program 1 times [2021-11-23 01:38:50,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:38:50,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525535600] [2021-11-23 01:38:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:38:50,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:38:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:38:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:38:50,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:38:50,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525535600] [2021-11-23 01:38:50,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525535600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:38:50,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:38:50,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:38:50,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708078829] [2021-11-23 01:38:50,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:38:50,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:38:50,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:38:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:38:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:38:50,966 INFO L87 Difference]: Start difference. First operand 18688 states and 24182 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:38:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:38:52,085 INFO L93 Difference]: Finished difference Result 56516 states and 73325 transitions. [2021-11-23 01:38:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:38:52,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-23 01:38:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:38:52,178 INFO L225 Difference]: With dead ends: 56516 [2021-11-23 01:38:52,178 INFO L226 Difference]: Without dead ends: 37843 [2021-11-23 01:38:52,215 INFO L932 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 [2021-11-23 01:38:52,216 INFO L933 BasicCegarLoop]: 30232 mSDtfsCounter, 21935 mSDsluCounter, 49029 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21935 SdHoareTripleChecker+Valid, 79261 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:38:52,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21935 Valid, 79261 Invalid, 75 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:38:52,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37843 states. [2021-11-23 01:38:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37843 to 20966. [2021-11-23 01:38:52,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20966 states, 20916 states have (on average 1.3011091986995602) internal successors, (27214), 20965 states have internal predecessors, (27214), 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) [2021-11-23 01:38:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20966 states to 20966 states and 27214 transitions. [2021-11-23 01:38:52,895 INFO L78 Accepts]: Start accepts. Automaton has 20966 states and 27214 transitions. Word has length 60 [2021-11-23 01:38:52,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:38:52,897 INFO L470 AbstractCegarLoop]: Abstraction has 20966 states and 27214 transitions. [2021-11-23 01:38:52,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:38:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 20966 states and 27214 transitions. [2021-11-23 01:38:52,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 01:38:52,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:38:52,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:38:52,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 01:38:52,907 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-23 01:38:52,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:38:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash -279986954, now seen corresponding path program 1 times [2021-11-23 01:38:52,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:38:52,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636452115] [2021-11-23 01:38:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:38:52,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:38:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:38:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:38:53,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:38:53,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636452115] [2021-11-23 01:38:53,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636452115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:38:53,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:38:53,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:38:53,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545254620] [2021-11-23 01:38:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:38:53,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:38:53,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:38:53,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:38:53,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:38:53,060 INFO L87 Difference]: Start difference. First operand 20966 states and 27214 transitions. Second operand has 4 states, 4 states have (on average 15.25) 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) [2021-11-23 01:38:54,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:38:54,073 INFO L93 Difference]: Finished difference Result 67908 states and 88489 transitions. [2021-11-23 01:38:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:38:54,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) 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 [2021-11-23 01:38:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:38:54,179 INFO L225 Difference]: With dead ends: 67908 [2021-11-23 01:38:54,180 INFO L226 Difference]: Without dead ends: 46957 [2021-11-23 01:38:54,223 INFO L932 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 [2021-11-23 01:38:54,224 INFO L933 BasicCegarLoop]: 27202 mSDtfsCounter, 24973 mSDsluCounter, 48307 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24973 SdHoareTripleChecker+Valid, 75509 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:38:54,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24973 Valid, 75509 Invalid, 67 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [16 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:38:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46957 states. [2021-11-23 01:38:55,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46957 to 37745. [2021-11-23 01:38:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37745 states, 37695 states have (on average 1.3022416766149356) internal successors, (49088), 37744 states have internal predecessors, (49088), 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) [2021-11-23 01:38:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37745 states to 37745 states and 49088 transitions. [2021-11-23 01:38:55,131 INFO L78 Accepts]: Start accepts. Automaton has 37745 states and 49088 transitions. Word has length 61 [2021-11-23 01:38:55,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:38:55,131 INFO L470 AbstractCegarLoop]: Abstraction has 37745 states and 49088 transitions. [2021-11-23 01:38:55,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) 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) [2021-11-23 01:38:55,132 INFO L276 IsEmpty]: Start isEmpty. Operand 37745 states and 49088 transitions. [2021-11-23 01:38:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 01:38:55,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:38:55,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:38:55,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 01:38:55,141 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-23 01:38:55,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:38:55,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2095000193, now seen corresponding path program 1 times [2021-11-23 01:38:55,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:38:55,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697605386] [2021-11-23 01:38:55,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:38:55,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:38:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:38:55,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:38:55,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:38:55,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697605386] [2021-11-23 01:38:55,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697605386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:38:55,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:38:55,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:38:55,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760470042] [2021-11-23 01:38:55,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:38:55,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:38:55,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:38:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:38:55,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:38:55,281 INFO L87 Difference]: Start difference. First operand 37745 states and 49088 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-23 01:38:56,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:38:56,759 INFO L93 Difference]: Finished difference Result 123299 states and 160986 transitions. [2021-11-23 01:38:56,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:38:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-23 01:38:56,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:38:56,952 INFO L225 Difference]: With dead ends: 123299 [2021-11-23 01:38:56,952 INFO L226 Difference]: Without dead ends: 85569 [2021-11-23 01:38:57,037 INFO L932 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 [2021-11-23 01:38:57,038 INFO L933 BasicCegarLoop]: 27200 mSDtfsCounter, 24980 mSDsluCounter, 48307 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24980 SdHoareTripleChecker+Valid, 75507 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:38:57,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24980 Valid, 75507 Invalid, 67 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:38:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85569 states. [2021-11-23 01:38:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85569 to 67234. [2021-11-23 01:38:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67234 states, 67184 states have (on average 1.303405572755418) internal successors, (87568), 67233 states have internal predecessors, (87568), 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) [2021-11-23 01:38:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67234 states to 67234 states and 87568 transitions. [2021-11-23 01:38:58,786 INFO L78 Accepts]: Start accepts. Automaton has 67234 states and 87568 transitions. Word has length 62 [2021-11-23 01:38:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:38:58,787 INFO L470 AbstractCegarLoop]: Abstraction has 67234 states and 87568 transitions. [2021-11-23 01:38:58,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-23 01:38:58,787 INFO L276 IsEmpty]: Start isEmpty. Operand 67234 states and 87568 transitions. [2021-11-23 01:38:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-23 01:38:58,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:38:58,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:38:58,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 01:38:58,795 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-23 01:38:58,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:38:58,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2093291569, now seen corresponding path program 1 times [2021-11-23 01:38:58,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:38:58,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312095102] [2021-11-23 01:38:58,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:38:58,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:38:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:38:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:38:58,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:38:58,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312095102] [2021-11-23 01:38:58,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312095102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:38:58,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:38:58,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:38:58,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387882555] [2021-11-23 01:38:58,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:38:58,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 01:38:58,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:38:58,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 01:38:58,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 01:38:58,933 INFO L87 Difference]: Start difference. First operand 67234 states and 87568 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:39:01,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:39:01,863 INFO L93 Difference]: Finished difference Result 221870 states and 290164 transitions. [2021-11-23 01:39:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 01:39:02,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-23 01:39:02,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:39:02,364 INFO L225 Difference]: With dead ends: 221870 [2021-11-23 01:39:02,364 INFO L226 Difference]: Without dead ends: 154651 [2021-11-23 01:39:02,551 INFO L932 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 [2021-11-23 01:39:02,552 INFO L933 BasicCegarLoop]: 27198 mSDtfsCounter, 24987 mSDsluCounter, 48307 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24987 SdHoareTripleChecker+Valid, 75505 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 01:39:02,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24987 Valid, 75505 Invalid, 67 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 01:39:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154651 states. [2021-11-23 01:39:05,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154651 to 118073. [2021-11-23 01:39:05,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118073 states, 118023 states have (on average 1.3047456851630614) internal successors, (153990), 118072 states have internal predecessors, (153990), 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) [2021-11-23 01:39:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118073 states to 118073 states and 153990 transitions. [2021-11-23 01:39:05,813 INFO L78 Accepts]: Start accepts. Automaton has 118073 states and 153990 transitions. Word has length 63 [2021-11-23 01:39:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:39:05,813 INFO L470 AbstractCegarLoop]: Abstraction has 118073 states and 153990 transitions. [2021-11-23 01:39:05,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 01:39:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 118073 states and 153990 transitions. [2021-11-23 01:39:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 01:39:05,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:39:05,822 INFO L514 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] [2021-11-23 01:39:05,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 01:39:05,823 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-23 01:39:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:39:05,823 INFO L85 PathProgramCache]: Analyzing trace with hash 605882756, now seen corresponding path program 1 times [2021-11-23 01:39:05,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:39:05,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769812782] [2021-11-23 01:39:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:39:05,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:39:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:39:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 01:39:06,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:39:06,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769812782] [2021-11-23 01:39:06,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769812782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:39:06,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:39:06,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 01:39:06,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060625441] [2021-11-23 01:39:06,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:39:06,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 01:39:06,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:39:06,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 01:39:06,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 01:39:06,256 INFO L87 Difference]: Start difference. First operand 118073 states and 153990 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-23 01:39:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 01:39:11,380 INFO L93 Difference]: Finished difference Result 339885 states and 444116 transitions. [2021-11-23 01:39:11,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 01:39:11,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-23 01:39:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 01:39:12,075 INFO L225 Difference]: With dead ends: 339885 [2021-11-23 01:39:12,075 INFO L226 Difference]: Without dead ends: 221827 [2021-11-23 01:39:12,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 01:39:12,275 INFO L933 BasicCegarLoop]: 43044 mSDtfsCounter, 31023 mSDsluCounter, 107169 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31023 SdHoareTripleChecker+Valid, 150213 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 01:39:12,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31023 Valid, 150213 Invalid, 151 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 01:39:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221827 states. [2021-11-23 01:39:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221827 to 118113. [2021-11-23 01:39:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118113 states, 118063 states have (on average 1.3046424366651703) internal successors, (154030), 118112 states have internal predecessors, (154030), 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) [2021-11-23 01:39:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118113 states to 118113 states and 154030 transitions. [2021-11-23 01:39:16,419 INFO L78 Accepts]: Start accepts. Automaton has 118113 states and 154030 transitions. Word has length 68 [2021-11-23 01:39:16,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 01:39:16,419 INFO L470 AbstractCegarLoop]: Abstraction has 118113 states and 154030 transitions. [2021-11-23 01:39:16,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-23 01:39:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 118113 states and 154030 transitions. [2021-11-23 01:39:16,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 01:39:16,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 01:39:16,426 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 01:39:16,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 01:39:16,427 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-23 01:39:16,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:39:16,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1312655525, now seen corresponding path program 1 times [2021-11-23 01:39:16,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 01:39:16,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058744419] [2021-11-23 01:39:16,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 01:39:16,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:39:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:39:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:39:16,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 01:39:16,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058744419] [2021-11-23 01:39:16,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058744419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 01:39:16,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 01:39:16,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 01:39:16,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915733914] [2021-11-23 01:39:16,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 01:39:16,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 01:39:16,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 01:39:16,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 01:39:16,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 01:39:16,519 INFO L87 Difference]: Start difference. First operand 118113 states and 154030 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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)