./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 536967bc2d119b5b01611d52124221c0068f635deed7f674213322a832d07143 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 17:45:36,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 17:45:36,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 17:45:36,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 17:45:36,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 17:45:36,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 17:45:36,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 17:45:36,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 17:45:36,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 17:45:36,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 17:45:36,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 17:45:36,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 17:45:36,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 17:45:36,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 17:45:36,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 17:45:36,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 17:45:36,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 17:45:36,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 17:45:36,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 17:45:36,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 17:45:36,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 17:45:36,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 17:45:36,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 17:45:36,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 17:45:36,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 17:45:36,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 17:45:36,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 17:45:36,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 17:45:36,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 17:45:36,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 17:45:36,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 17:45:36,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 17:45:36,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 17:45:36,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 17:45:36,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 17:45:36,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 17:45:36,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 17:45:36,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 17:45:36,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 17:45:36,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 17:45:36,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 17:45:36,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 17:45:36,836 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 17:45:36,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 17:45:36,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 17:45:36,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 17:45:36,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 17:45:36,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 17:45:36,838 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 17:45:36,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 17:45:36,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 17:45:36,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 17:45:36,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 17:45:36,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 17:45:36,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 17:45:36,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 17:45:36,839 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 17:45:36,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 17:45:36,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 17:45:36,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 17:45:36,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 17:45:36,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:45:36,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 17:45:36,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 17:45:36,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 17:45:36,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 17:45:36,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 17:45:36,842 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 17:45:36,842 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 17:45:36,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 17:45:36,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 17:45:36,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 536967bc2d119b5b01611d52124221c0068f635deed7f674213322a832d07143 [2021-11-07 17:45:37,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 17:45:37,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 17:45:37,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 17:45:37,103 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 17:45:37,104 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 17:45:37,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-07 17:45:37,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc06bd7d/6d1e198fd3ad4a479d37bfe60903e70d/FLAGaf6d13704 [2021-11-07 17:45:37,885 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 17:45:37,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-07 17:45:37,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc06bd7d/6d1e198fd3ad4a479d37bfe60903e70d/FLAGaf6d13704 [2021-11-07 17:45:38,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dc06bd7d/6d1e198fd3ad4a479d37bfe60903e70d [2021-11-07 17:45:38,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 17:45:38,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 17:45:38,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 17:45:38,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 17:45:38,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 17:45:38,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:45:38" (1/1) ... [2021-11-07 17:45:38,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7736dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:38, skipping insertion in model container [2021-11-07 17:45:38,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:45:38" (1/1) ... [2021-11-07 17:45:38,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 17:45:38,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 17:45:40,586 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314317,314330] [2021-11-07 17:45:40,589 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314464,314477] [2021-11-07 17:45:40,590 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314603,314616] [2021-11-07 17:45:40,590 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314761,314774] [2021-11-07 17:45:40,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:45:40,670 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 17:45:41,073 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314317,314330] [2021-11-07 17:45:41,077 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314464,314477] [2021-11-07 17:45:41,091 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314603,314616] [2021-11-07 17:45:41,092 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i[314761,314774] [2021-11-07 17:45:41,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 17:45:41,232 INFO L208 MainTranslator]: Completed translation [2021-11-07 17:45:41,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41 WrapperNode [2021-11-07 17:45:41,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 17:45:41,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 17:45:41,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 17:45:41,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 17:45:41,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41" (1/1) ... [2021-11-07 17:45:41,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41" (1/1) ... [2021-11-07 17:45:48,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 17:45:48,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 17:45:48,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 17:45:48,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 17:45:48,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41" (1/1) ... [2021-11-07 17:45:48,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41" (1/1) ... [2021-11-07 17:45:49,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41" (1/1) ... [2021-11-07 17:45:49,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41" (1/1) ... [2021-11-07 17:45:51,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41" (1/1) ... [2021-11-07 17:45:51,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41" (1/1) ... [2021-11-07 17:45:52,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41" (1/1) ... [2021-11-07 17:45:52,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 17:45:52,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 17:45:52,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 17:45:52,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 17:45:52,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41" (1/1) ... [2021-11-07 17:45:52,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 17:45:52,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 17:45:52,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 17:45:52,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 17:45:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 17:45:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 17:45:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 17:45:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 17:45:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 17:45:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 17:45:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 17:45:52,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 17:45:52,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 17:45:52,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 17:45:52,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 17:45:52,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 17:45:52,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 17:45:52,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 17:45:52,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 17:45:52,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 17:46:35,562 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 17:46:35,562 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 17:46:35,563 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 17:46:35,563 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 17:46:35,568 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 17:46:35,569 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 17:46:35,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 17:46:35,645 INFO L299 CfgBuilder]: Removed 36084 assume(true) statements. [2021-11-07 17:46:35,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:46:35 BoogieIcfgContainer [2021-11-07 17:46:35,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 17:46:35,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 17:46:35,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 17:46:35,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 17:46:35,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:45:38" (1/3) ... [2021-11-07 17:46:35,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3e8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:46:35, skipping insertion in model container [2021-11-07 17:46:35,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:45:41" (2/3) ... [2021-11-07 17:46:35,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3e8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:46:35, skipping insertion in model container [2021-11-07 17:46:35,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:46:35" (3/3) ... [2021-11-07 17:46:35,695 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-sun-sunhme.cil.i [2021-11-07 17:46:35,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 17:46:35,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 17:46:35,841 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 17:46:35,849 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 17:46:35,849 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 17:46:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 23101 states, 23097 states have (on average 1.2038792916829026) internal successors, (27806), 23100 states have internal predecessors, (27806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:46:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 17:46:36,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:46:36,168 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] [2021-11-07 17:46:36,169 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:46:36,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:46:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash -201446684, now seen corresponding path program 1 times [2021-11-07 17:46:36,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:46:36,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249115103] [2021-11-07 17:46:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:46:36,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:46:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:46:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:46:37,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:46:37,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249115103] [2021-11-07 17:46:37,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249115103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:46:37,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:46:37,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:46:37,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407870018] [2021-11-07 17:46:37,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:46:37,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:46:37,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:46:37,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:46:37,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:46:37,170 INFO L87 Difference]: Start difference. First operand has 23101 states, 23097 states have (on average 1.2038792916829026) internal successors, (27806), 23100 states have internal predecessors, (27806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:46:39,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:46:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:46:40,977 INFO L93 Difference]: Finished difference Result 69048 states and 83093 transitions. [2021-11-07 17:46:40,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:46:40,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 17:46:40,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:46:41,203 INFO L225 Difference]: With dead ends: 69048 [2021-11-07 17:46:41,203 INFO L226 Difference]: Without dead ends: 45781 [2021-11-07 17:46:41,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.57ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:46:41,288 INFO L933 BasicCegarLoop]: 27742 mSDtfsCounter, 27561 mSDsluCounter, 27690 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2100.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27561 SdHoareTripleChecker+Valid, 55432 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 144.02ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2226.74ms IncrementalHoareTripleChecker+Time [2021-11-07 17:46:41,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27561 Valid, 55432 Invalid, 34 Unknown, 0 Unchecked, 144.02ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2226.74ms Time] [2021-11-07 17:46:41,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45781 states. [2021-11-07 17:46:42,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45781 to 45779. [2021-11-07 17:46:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45779 states, 45775 states have (on average 1.1966357181867833) internal successors, (54776), 45778 states have internal predecessors, (54776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:46:42,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45779 states to 45779 states and 54776 transitions. [2021-11-07 17:46:42,907 INFO L78 Accepts]: Start accepts. Automaton has 45779 states and 54776 transitions. Word has length 43 [2021-11-07 17:46:42,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:46:42,908 INFO L470 AbstractCegarLoop]: Abstraction has 45779 states and 54776 transitions. [2021-11-07 17:46:42,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:46:42,910 INFO L276 IsEmpty]: Start isEmpty. Operand 45779 states and 54776 transitions. [2021-11-07 17:46:42,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 17:46:42,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:46:42,925 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] [2021-11-07 17:46:42,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 17:46:42,926 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:46:42,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:46:42,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1056831426, now seen corresponding path program 1 times [2021-11-07 17:46:42,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:46:42,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448048428] [2021-11-07 17:46:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:46:42,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:46:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:46:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:46:43,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:46:43,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448048428] [2021-11-07 17:46:43,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448048428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:46:43,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:46:43,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:46:43,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735550319] [2021-11-07 17:46:43,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:46:43,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:46:43,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:46:43,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:46:43,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:46:43,157 INFO L87 Difference]: Start difference. First operand 45779 states and 54776 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:46:44,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:46:44,297 INFO L93 Difference]: Finished difference Result 68671 states and 82167 transitions. [2021-11-07 17:46:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:46:44,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 17:46:44,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:46:44,449 INFO L225 Difference]: With dead ends: 68671 [2021-11-07 17:46:44,452 INFO L226 Difference]: Without dead ends: 45779 [2021-11-07 17:46:44,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:46:44,515 INFO L933 BasicCegarLoop]: 27465 mSDtfsCounter, 14 mSDsluCounter, 27449 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 54914 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.08ms IncrementalHoareTripleChecker+Time [2021-11-07 17:46:44,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 54914 Invalid, 3 Unknown, 0 Unchecked, 46.29ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 6.08ms Time] [2021-11-07 17:46:44,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45779 states. [2021-11-07 17:46:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45779 to 45779. [2021-11-07 17:46:45,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45779 states, 45775 states have (on average 1.1966138722009831) internal successors, (54775), 45778 states have internal predecessors, (54775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:46:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45779 states to 45779 states and 54775 transitions. [2021-11-07 17:46:45,701 INFO L78 Accepts]: Start accepts. Automaton has 45779 states and 54775 transitions. Word has length 67 [2021-11-07 17:46:45,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:46:45,701 INFO L470 AbstractCegarLoop]: Abstraction has 45779 states and 54775 transitions. [2021-11-07 17:46:45,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:46:45,702 INFO L276 IsEmpty]: Start isEmpty. Operand 45779 states and 54775 transitions. [2021-11-07 17:46:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 17:46:45,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:46:45,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:46:45,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 17:46:45,709 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:46:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:46:45,710 INFO L85 PathProgramCache]: Analyzing trace with hash 140076434, now seen corresponding path program 1 times [2021-11-07 17:46:45,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:46:45,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931139431] [2021-11-07 17:46:45,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:46:45,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:46:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:46:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:46:45,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:46:45,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931139431] [2021-11-07 17:46:45,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931139431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:46:45,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:46:45,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:46:45,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836453627] [2021-11-07 17:46:45,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:46:45,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:46:45,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:46:45,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:46:45,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:46:45,872 INFO L87 Difference]: Start difference. First operand 45779 states and 54775 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:46:47,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:46:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:46:49,513 INFO L93 Difference]: Finished difference Result 91093 states and 109008 transitions. [2021-11-07 17:46:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:46:49,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 17:46:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:46:49,655 INFO L225 Difference]: With dead ends: 91093 [2021-11-07 17:46:49,655 INFO L226 Difference]: Without dead ends: 45382 [2021-11-07 17:46:49,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:46:49,727 INFO L933 BasicCegarLoop]: 27443 mSDtfsCounter, 13430 mSDsluCounter, 27390 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2189.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13430 SdHoareTripleChecker+Valid, 54833 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 309.89ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2351.32ms IncrementalHoareTripleChecker+Time [2021-11-07 17:46:49,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13430 Valid, 54833 Invalid, 100 Unknown, 0 Unchecked, 309.89ms Time], IncrementalHoareTripleChecker [20 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 2351.32ms Time] [2021-11-07 17:46:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45382 states. [2021-11-07 17:46:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45382 to 45360. [2021-11-07 17:46:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45360 states, 45356 states have (on average 1.196269512302672) internal successors, (54258), 45359 states have internal predecessors, (54258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:46:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45360 states to 45360 states and 54258 transitions. [2021-11-07 17:46:50,894 INFO L78 Accepts]: Start accepts. Automaton has 45360 states and 54258 transitions. Word has length 68 [2021-11-07 17:46:50,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:46:50,894 INFO L470 AbstractCegarLoop]: Abstraction has 45360 states and 54258 transitions. [2021-11-07 17:46:50,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:46:50,895 INFO L276 IsEmpty]: Start isEmpty. Operand 45360 states and 54258 transitions. [2021-11-07 17:46:50,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 17:46:50,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:46:50,908 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:46:50,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 17:46:50,909 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:46:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:46:50,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1734962658, now seen corresponding path program 1 times [2021-11-07 17:46:50,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:46:50,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530168411] [2021-11-07 17:46:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:46:50,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:46:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:46:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:46:51,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:46:51,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530168411] [2021-11-07 17:46:51,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530168411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:46:51,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:46:51,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:46:51,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538727958] [2021-11-07 17:46:51,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:46:51,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:46:51,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:46:51,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:46:51,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:46:51,163 INFO L87 Difference]: Start difference. First operand 45360 states and 54258 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2021-11-07 17:46:53,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:46:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:46:54,914 INFO L93 Difference]: Finished difference Result 113469 states and 135756 transitions. [2021-11-07 17:46:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:46:54,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 [2021-11-07 17:46:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:46:55,161 INFO L225 Difference]: With dead ends: 113469 [2021-11-07 17:46:55,161 INFO L226 Difference]: Without dead ends: 79360 [2021-11-07 17:46:55,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:46:55,424 INFO L933 BasicCegarLoop]: 40832 mSDtfsCounter, 27308 mSDsluCounter, 27440 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2075.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27308 SdHoareTripleChecker+Valid, 68272 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.57ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2219.14ms IncrementalHoareTripleChecker+Time [2021-11-07 17:46:55,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27308 Valid, 68272 Invalid, 30 Unknown, 0 Unchecked, 58.57ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2219.14ms Time] [2021-11-07 17:46:55,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79360 states. [2021-11-07 17:46:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79360 to 79358. [2021-11-07 17:46:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79358 states, 79354 states have (on average 1.1963732137006327) internal successors, (94937), 79357 states have internal predecessors, (94937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:46:57,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79358 states to 79358 states and 94937 transitions. [2021-11-07 17:46:57,472 INFO L78 Accepts]: Start accepts. Automaton has 79358 states and 94937 transitions. Word has length 75 [2021-11-07 17:46:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:46:57,475 INFO L470 AbstractCegarLoop]: Abstraction has 79358 states and 94937 transitions. [2021-11-07 17:46:57,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2021-11-07 17:46:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 79358 states and 94937 transitions. [2021-11-07 17:46:57,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 17:46:57,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:46:57,485 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:46:57,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 17:46:57,486 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:46:57,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:46:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash 713894304, now seen corresponding path program 1 times [2021-11-07 17:46:57,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:46:57,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585895419] [2021-11-07 17:46:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:46:57,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:46:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:46:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:46:57,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:46:57,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585895419] [2021-11-07 17:46:57,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585895419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:46:57,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:46:57,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:46:57,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825959360] [2021-11-07 17:46:57,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:46:57,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:46:57,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:46:57,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:46:57,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:46:57,695 INFO L87 Difference]: Start difference. First operand 79358 states and 94937 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2021-11-07 17:46:59,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:47:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:47:02,352 INFO L93 Difference]: Finished difference Result 181467 states and 217118 transitions. [2021-11-07 17:47:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:47:02,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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 [2021-11-07 17:47:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:47:02,775 INFO L225 Difference]: With dead ends: 181467 [2021-11-07 17:47:02,775 INFO L226 Difference]: Without dead ends: 113360 [2021-11-07 17:47:02,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:47:02,984 INFO L933 BasicCegarLoop]: 54768 mSDtfsCounter, 27310 mSDsluCounter, 27439 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2078.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27310 SdHoareTripleChecker+Valid, 82207 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.04ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2185.46ms IncrementalHoareTripleChecker+Time [2021-11-07 17:47:02,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27310 Valid, 82207 Invalid, 32 Unknown, 0 Unchecked, 59.04ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2185.46ms Time] [2021-11-07 17:47:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113360 states. [2021-11-07 17:47:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113360 to 113351. [2021-11-07 17:47:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113351 states, 113347 states have (on average 1.196423372475672) internal successors, (135611), 113350 states have internal predecessors, (135611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:47:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113351 states to 113351 states and 135611 transitions. [2021-11-07 17:47:06,050 INFO L78 Accepts]: Start accepts. Automaton has 113351 states and 135611 transitions. Word has length 75 [2021-11-07 17:47:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:47:06,050 INFO L470 AbstractCegarLoop]: Abstraction has 113351 states and 135611 transitions. [2021-11-07 17:47:06,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 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) [2021-11-07 17:47:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 113351 states and 135611 transitions. [2021-11-07 17:47:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 17:47:06,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:47:06,059 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:47:06,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 17:47:06,060 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:47:06,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:47:06,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2068466793, now seen corresponding path program 1 times [2021-11-07 17:47:06,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:47:06,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654512102] [2021-11-07 17:47:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:47:06,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:47:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:47:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 17:47:06,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:47:06,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654512102] [2021-11-07 17:47:06,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654512102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:47:06,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:47:06,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 17:47:06,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331878966] [2021-11-07 17:47:06,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:47:06,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 17:47:06,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:47:06,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 17:47:06,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 17:47:06,769 INFO L87 Difference]: Start difference. First operand 113351 states and 135611 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:47:09,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:47:09,081 INFO L93 Difference]: Finished difference Result 113351 states and 135611 transitions. [2021-11-07 17:47:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 17:47:09,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 17:47:09,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:47:09,317 INFO L225 Difference]: With dead ends: 113351 [2021-11-07 17:47:09,318 INFO L226 Difference]: Without dead ends: 102134 [2021-11-07 17:47:09,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 17:47:09,378 INFO L933 BasicCegarLoop]: 27456 mSDtfsCounter, 27397 mSDsluCounter, 27456 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27397 SdHoareTripleChecker+Valid, 54912 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.04ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.79ms IncrementalHoareTripleChecker+Time [2021-11-07 17:47:09,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27397 Valid, 54912 Invalid, 10 Unknown, 0 Unchecked, 62.04ms Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 64.79ms Time] [2021-11-07 17:47:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102134 states. [2021-11-07 17:47:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102134 to 102134. [2021-11-07 17:47:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102134 states, 102133 states have (on average 1.1964203538523297) internal successors, (122194), 102133 states have internal predecessors, (122194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:47:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102134 states to 102134 states and 122194 transitions. [2021-11-07 17:47:12,161 INFO L78 Accepts]: Start accepts. Automaton has 102134 states and 122194 transitions. Word has length 75 [2021-11-07 17:47:12,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 17:47:12,162 INFO L470 AbstractCegarLoop]: Abstraction has 102134 states and 122194 transitions. [2021-11-07 17:47:12,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:47:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 102134 states and 122194 transitions. [2021-11-07 17:47:12,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 17:47:12,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 17:47:12,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 17:47:12,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 17:47:12,197 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 17:47:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 17:47:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1420995789, now seen corresponding path program 1 times [2021-11-07 17:47:12,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 17:47:12,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320251887] [2021-11-07 17:47:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 17:47:12,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 17:47:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 17:47:12,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 17:47:12,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 17:47:12,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320251887] [2021-11-07 17:47:12,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320251887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 17:47:12,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 17:47:12,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 17:47:12,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114182837] [2021-11-07 17:47:12,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 17:47:12,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 17:47:12,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 17:47:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 17:47:12,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:47:12,369 INFO L87 Difference]: Start difference. First operand 102134 states and 122194 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 17:47:14,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 17:47:18,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 17:47:18,101 INFO L93 Difference]: Finished difference Result 226591 states and 271132 transitions. [2021-11-07 17:47:18,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 17:47:18,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-11-07 17:47:18,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 17:47:18,438 INFO L225 Difference]: With dead ends: 226591 [2021-11-07 17:47:18,438 INFO L226 Difference]: Without dead ends: 135708 [2021-11-07 17:47:18,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 17:47:18,614 INFO L933 BasicCegarLoop]: 40830 mSDtfsCounter, 13398 mSDsluCounter, 27361 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2154.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13398 SdHoareTripleChecker+Valid, 68191 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.53ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2625.09ms IncrementalHoareTripleChecker+Time [2021-11-07 17:47:18,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13398 Valid, 68191 Invalid, 86 Unknown, 0 Unchecked, 48.53ms Time], IncrementalHoareTripleChecker [15 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2625.09ms Time] [2021-11-07 17:47:18,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135708 states.