./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--ethernet--3com--3c589_cs.ko-entry_point.cil.out.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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.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 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:14:59,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:14:59,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:14:59,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:14:59,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:14:59,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:14:59,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:14:59,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:14:59,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:14:59,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:14:59,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:14:59,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:14:59,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:14:59,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:14:59,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:14:59,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:14:59,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:14:59,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:14:59,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:14:59,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:14:59,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:14:59,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:14:59,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:14:59,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:14:59,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:14:59,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:14:59,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:14:59,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:14:59,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:14:59,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:14:59,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:14:59,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:14:59,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:14:59,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:14:59,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:14:59,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:14:59,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:14:59,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:14:59,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:14:59,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:14:59,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:14:59,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:14:59,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:14:59,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:14:59,812 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:14:59,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:14:59,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:14:59,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:14:59,814 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:14:59,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:14:59,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:14:59,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:14:59,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:14:59,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:14:59,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:14:59,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:14:59,816 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:14:59,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:14:59,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:14:59,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:14:59,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:14:59,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:14:59,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:14:59,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:14:59,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:14:59,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:14:59,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:14:59,819 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:14:59,819 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:14:59,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:14:59,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:14:59,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 983ce5e5a67d7f1a953a7dc1806bc74e6e7b7100ad78daf1e74f2f1bd8e39c48 [2021-11-06 17:15:00,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:15:00,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:15:00,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:15:00,111 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:15:00,113 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:15:00,114 INFO L432 ainManager$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--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-11-06 17:15:00,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6893d1455/f0c7e10e9a194debb97df10206d237e5/FLAG301b63131 [2021-11-06 17:15:00,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:15:00,875 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--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-11-06 17:15:00,929 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6893d1455/f0c7e10e9a194debb97df10206d237e5/FLAG301b63131 [2021-11-06 17:15:01,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6893d1455/f0c7e10e9a194debb97df10206d237e5 [2021-11-06 17:15:01,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:15:01,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:15:01,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:15:01,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:15:01,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:15:01,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:15:01" (1/1) ... [2021-11-06 17:15:01,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca1c77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:01, skipping insertion in model container [2021-11-06 17:15:01,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:15:01" (1/1) ... [2021-11-06 17:15:01,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:15:01,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:15:02,681 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2021-11-06 17:15:02,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:15:02,772 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:15:03,046 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i[239406,239419] [2021-11-06 17:15:03,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:15:03,188 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:15:03,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03 WrapperNode [2021-11-06 17:15:03,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:15:03,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:15:03,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:15:03,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:15:03,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03" (1/1) ... [2021-11-06 17:15:03,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03" (1/1) ... [2021-11-06 17:15:03,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:15:03,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:15:03,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:15:03,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:15:03,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03" (1/1) ... [2021-11-06 17:15:03,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03" (1/1) ... [2021-11-06 17:15:03,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03" (1/1) ... [2021-11-06 17:15:03,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03" (1/1) ... [2021-11-06 17:15:03,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03" (1/1) ... [2021-11-06 17:15:03,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03" (1/1) ... [2021-11-06 17:15:03,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03" (1/1) ... [2021-11-06 17:15:04,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:15:04,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:15:04,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:15:04,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:15:04,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03" (1/1) ... [2021-11-06 17:15:04,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:15:04,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:15:04,121 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 17:15:04,184 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 17:15:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:15:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:15:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:15:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:15:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:15:04,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:15:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:15:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:15:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:15:04,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:15:04,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:15:18,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:15:18,865 INFO L299 CfgBuilder]: Removed 2182 assume(true) statements. [2021-11-06 17:15:18,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:15:18 BoogieIcfgContainer [2021-11-06 17:15:18,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:15:18,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:15:18,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:15:18,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:15:18,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:15:01" (1/3) ... [2021-11-06 17:15:18,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5006991c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:15:18, skipping insertion in model container [2021-11-06 17:15:18,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:15:03" (2/3) ... [2021-11-06 17:15:18,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5006991c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:15:18, skipping insertion in model container [2021-11-06 17:15:18,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:15:18" (3/3) ... [2021-11-06 17:15:18,878 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--3com--3c589_cs.ko-entry_point.cil.out.i [2021-11-06 17:15:18,883 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:15:18,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-06 17:15:18,935 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:15:18,940 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 17:15:18,941 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-06 17:15:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 1923 states, 1914 states have (on average 1.3834900731452455) internal successors, (2648), 1922 states have internal predecessors, (2648), 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 17:15:19,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 17:15:19,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:15:19,004 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, 1, 1, 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 17:15:19,004 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 17:15:19,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:15:19,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1801920152, now seen corresponding path program 1 times [2021-11-06 17:15:19,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:15:19,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885270265] [2021-11-06 17:15:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:15:19,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:15:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:15:19,574 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 17:15:19,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:15:19,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885270265] [2021-11-06 17:15:19,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885270265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:15:19,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:15:19,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:15:19,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656783162] [2021-11-06 17:15:19,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:15:19,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:15:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:15:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:15:19,647 INFO L87 Difference]: Start difference. First operand has 1923 states, 1914 states have (on average 1.3834900731452455) internal successors, (2648), 1922 states have internal predecessors, (2648), 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 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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 17:15:19,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:15:19,773 INFO L93 Difference]: Finished difference Result 3842 states and 5291 transitions. [2021-11-06 17:15:19,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:15:19,774 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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 17:15:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:15:19,801 INFO L225 Difference]: With dead ends: 3842 [2021-11-06 17:15:19,801 INFO L226 Difference]: Without dead ends: 1896 [2021-11-06 17:15:19,811 INFO L786 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 [2021-11-06 17:15:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2021-11-06 17:15:19,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1896. [2021-11-06 17:15:19,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1888 states have (on average 1.3606991525423728) internal successors, (2569), 1895 states have internal predecessors, (2569), 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 17:15:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2569 transitions. [2021-11-06 17:15:19,926 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2569 transitions. Word has length 75 [2021-11-06 17:15:19,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:15:19,926 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 2569 transitions. [2021-11-06 17:15:19,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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 17:15:19,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2569 transitions. [2021-11-06 17:15:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 17:15:19,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:15:19,933 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, 1, 1, 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 17:15:19,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:15:19,937 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 17:15:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:15:19,939 INFO L85 PathProgramCache]: Analyzing trace with hash -582973410, now seen corresponding path program 1 times [2021-11-06 17:15:19,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:15:19,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360681498] [2021-11-06 17:15:19,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:15:19,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:15:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:15:20,213 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 17:15:20,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:15:20,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360681498] [2021-11-06 17:15:20,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360681498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:15:20,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:15:20,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:15:20,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735251538] [2021-11-06 17:15:20,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:15:20,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:15:20,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:15:20,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:15:20,218 INFO L87 Difference]: Start difference. First operand 1896 states and 2569 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 17:15:22,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:15:22,892 INFO L93 Difference]: Finished difference Result 6930 states and 9407 transitions. [2021-11-06 17:15:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 17:15:22,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 17:15:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:15:22,914 INFO L225 Difference]: With dead ends: 6930 [2021-11-06 17:15:22,914 INFO L226 Difference]: Without dead ends: 5061 [2021-11-06 17:15:22,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:15:22,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5061 states. [2021-11-06 17:15:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5061 to 5008. [2021-11-06 17:15:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5008 states, 5000 states have (on average 1.3612) internal successors, (6806), 5007 states have internal predecessors, (6806), 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 17:15:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5008 states to 5008 states and 6806 transitions. [2021-11-06 17:15:23,102 INFO L78 Accepts]: Start accepts. Automaton has 5008 states and 6806 transitions. Word has length 75 [2021-11-06 17:15:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:15:23,103 INFO L470 AbstractCegarLoop]: Abstraction has 5008 states and 6806 transitions. [2021-11-06 17:15:23,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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 17:15:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5008 states and 6806 transitions. [2021-11-06 17:15:23,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 17:15:23,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:15:23,107 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, 1, 1, 1, 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 17:15:23,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:15:23,107 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 17:15:23,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:15:23,108 INFO L85 PathProgramCache]: Analyzing trace with hash 335286776, now seen corresponding path program 1 times [2021-11-06 17:15:23,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:15:23,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927559089] [2021-11-06 17:15:23,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:15:23,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:15:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:15:23,461 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 17:15:23,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:15:23,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927559089] [2021-11-06 17:15:23,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927559089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:15:23,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:15:23,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:15:23,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536406021] [2021-11-06 17:15:23,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:15:23,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:15:23,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:15:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:15:23,463 INFO L87 Difference]: Start difference. First operand 5008 states and 6806 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 17:15:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:15:26,362 INFO L93 Difference]: Finished difference Result 18243 states and 24786 transitions. [2021-11-06 17:15:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 17:15:26,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 76 [2021-11-06 17:15:26,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:15:26,422 INFO L225 Difference]: With dead ends: 18243 [2021-11-06 17:15:26,422 INFO L226 Difference]: Without dead ends: 13262 [2021-11-06 17:15:26,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:15:26,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13262 states. [2021-11-06 17:15:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13262 to 13166. [2021-11-06 17:15:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13166 states, 13158 states have (on average 1.3589451284389724) internal successors, (17881), 13165 states have internal predecessors, (17881), 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 17:15:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13166 states to 13166 states and 17881 transitions. [2021-11-06 17:15:27,027 INFO L78 Accepts]: Start accepts. Automaton has 13166 states and 17881 transitions. Word has length 76 [2021-11-06 17:15:27,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:15:27,029 INFO L470 AbstractCegarLoop]: Abstraction has 13166 states and 17881 transitions. [2021-11-06 17:15:27,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 17:15:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand 13166 states and 17881 transitions. [2021-11-06 17:15:27,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-06 17:15:27,033 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:15:27,033 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, 1, 1, 1, 1, 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 17:15:27,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:15:27,033 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 17:15:27,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:15:27,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1658364106, now seen corresponding path program 1 times [2021-11-06 17:15:27,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:15:27,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690594039] [2021-11-06 17:15:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:15:27,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:15:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:15:27,289 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 17:15:27,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:15:27,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690594039] [2021-11-06 17:15:27,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690594039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:15:27,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:15:27,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:15:27,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145532693] [2021-11-06 17:15:27,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:15:27,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:15:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:15:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:15:27,292 INFO L87 Difference]: Start difference. First operand 13166 states and 17881 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 17:15:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:15:30,916 INFO L93 Difference]: Finished difference Result 47461 states and 64364 transitions. [2021-11-06 17:15:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 17:15:30,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 17:15:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:15:31,044 INFO L225 Difference]: With dead ends: 47461 [2021-11-06 17:15:31,045 INFO L226 Difference]: Without dead ends: 34322 [2021-11-06 17:15:31,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:15:31,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34322 states. [2021-11-06 17:15:32,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34322 to 34112. [2021-11-06 17:15:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34112 states, 34104 states have (on average 1.3550316678395495) internal successors, (46212), 34111 states have internal predecessors, (46212), 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 17:15:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34112 states to 34112 states and 46212 transitions. [2021-11-06 17:15:32,577 INFO L78 Accepts]: Start accepts. Automaton has 34112 states and 46212 transitions. Word has length 77 [2021-11-06 17:15:32,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:15:32,577 INFO L470 AbstractCegarLoop]: Abstraction has 34112 states and 46212 transitions. [2021-11-06 17:15:32,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 17:15:32,578 INFO L276 IsEmpty]: Start isEmpty. Operand 34112 states and 46212 transitions. [2021-11-06 17:15:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 17:15:32,581 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:15:32,581 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, 1, 1, 1, 1, 1, 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 17:15:32,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:15:32,581 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 17:15:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:15:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1357915664, now seen corresponding path program 1 times [2021-11-06 17:15:32,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:15:32,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359248737] [2021-11-06 17:15:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:15:32,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:15:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:15:32,833 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 17:15:32,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:15:32,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359248737] [2021-11-06 17:15:32,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359248737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:15:32,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:15:32,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:15:32,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626629612] [2021-11-06 17:15:32,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:15:32,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:15:32,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:15:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:15:32,836 INFO L87 Difference]: Start difference. First operand 34112 states and 46212 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 17:15:37,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:15:37,409 INFO L93 Difference]: Finished difference Result 120981 states and 163484 transitions. [2021-11-06 17:15:37,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 17:15:37,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 78 [2021-11-06 17:15:37,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:15:37,780 INFO L225 Difference]: With dead ends: 120981 [2021-11-06 17:15:37,780 INFO L226 Difference]: Without dead ends: 86896 [2021-11-06 17:15:37,878 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-06 17:15:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86896 states. [2021-11-06 17:15:41,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86896 to 86374. [2021-11-06 17:15:41,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86374 states, 86366 states have (on average 1.3494083319824932) internal successors, (116543), 86373 states have internal predecessors, (116543), 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 17:15:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86374 states to 86374 states and 116543 transitions. [2021-11-06 17:15:41,610 INFO L78 Accepts]: Start accepts. Automaton has 86374 states and 116543 transitions. Word has length 78 [2021-11-06 17:15:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:15:41,611 INFO L470 AbstractCegarLoop]: Abstraction has 86374 states and 116543 transitions. [2021-11-06 17:15:41,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 17:15:41,611 INFO L276 IsEmpty]: Start isEmpty. Operand 86374 states and 116543 transitions. [2021-11-06 17:15:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-06 17:15:41,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:15:41,656 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:15:41,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:15:41,657 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 17:15:41,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:15:41,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1692772988, now seen corresponding path program 1 times [2021-11-06 17:15:41,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:15:41,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331043280] [2021-11-06 17:15:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:15:41,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:15:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:15:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:15:41,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:15:41,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331043280] [2021-11-06 17:15:41,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331043280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:15:41,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:15:41,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:15:41,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367565434] [2021-11-06 17:15:41,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:15:41,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:15:41,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:15:41,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:15:41,860 INFO L87 Difference]: Start difference. First operand 86374 states and 116543 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 17:15:45,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:15:45,938 INFO L93 Difference]: Finished difference Result 218745 states and 296786 transitions. [2021-11-06 17:15:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:15:45,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 141 [2021-11-06 17:15:45,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:15:46,378 INFO L225 Difference]: With dead ends: 218745 [2021-11-06 17:15:46,378 INFO L226 Difference]: Without dead ends: 132398 [2021-11-06 17:15:46,678 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 17:15:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132398 states. [2021-11-06 17:15:51,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132398 to 130924. [2021-11-06 17:15:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130924 states, 130916 states have (on average 1.3627058571908706) internal successors, (178400), 130923 states have internal predecessors, (178400), 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 17:15:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130924 states to 130924 states and 178400 transitions. [2021-11-06 17:15:51,845 INFO L78 Accepts]: Start accepts. Automaton has 130924 states and 178400 transitions. Word has length 141 [2021-11-06 17:15:51,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:15:51,845 INFO L470 AbstractCegarLoop]: Abstraction has 130924 states and 178400 transitions. [2021-11-06 17:15:51,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 17:15:51,846 INFO L276 IsEmpty]: Start isEmpty. Operand 130924 states and 178400 transitions. [2021-11-06 17:15:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-06 17:15:51,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:15:51,887 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:15:51,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:15:51,888 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-06 17:15:51,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:15:51,889 INFO L85 PathProgramCache]: Analyzing trace with hash 964755318, now seen corresponding path program 1 times [2021-11-06 17:15:51,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:15:51,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545876247] [2021-11-06 17:15:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:15:51,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:15:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:15:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 17:15:52,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:15:52,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545876247] [2021-11-06 17:15:52,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545876247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:15:52,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:15:52,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:15:52,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599785239] [2021-11-06 17:15:52,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:15:52,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:15:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:15:52,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:15:52,127 INFO L87 Difference]: Start difference. First operand 130924 states and 178400 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 17:15:59,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:15:59,523 INFO L93 Difference]: Finished difference Result 370443 states and 505174 transitions. [2021-11-06 17:15:59,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:15:59,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 194 [2021-11-06 17:15:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:00,187 INFO L225 Difference]: With dead ends: 370443 [2021-11-06 17:16:00,188 INFO L226 Difference]: Without dead ends: 239546 [2021-11-06 17:16:00,389 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 17:16:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239546 states.