./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.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 cb4cf2f7b619bb65636b8158cc0f6ae5cf90699f1f1c19bf802021a20c422d2c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:28:52,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:28:52,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:28:52,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:28:52,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:28:52,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:28:52,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:28:52,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:28:52,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:28:52,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:28:52,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:28:52,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:28:52,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:28:52,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:28:52,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:28:52,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:28:52,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:28:52,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:28:52,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:28:52,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:28:52,763 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:28:52,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:28:52,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:28:52,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:28:52,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:28:52,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:28:52,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:28:52,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:28:52,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:28:52,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:28:52,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:28:52,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:28:52,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:28:52,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:28:52,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:28:52,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:28:52,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:28:52,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:28:52,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:28:52,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:28:52,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:28:52,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:28:52,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:28:52,801 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:28:52,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:28:52,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:28:52,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:28:52,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:28:52,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:28:52,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:28:52,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:28:52,803 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:28:52,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:28:52,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:28:52,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:28:52,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:28:52,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:28:52,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:28:52,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:28:52,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:28:52,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:28:52,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:28:52,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:28:52,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:28:52,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:28:52,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:28:52,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:28:52,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:28:52,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:28:52,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:28:52,812 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:28:52,812 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:28:52,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:28:52,813 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb4cf2f7b619bb65636b8158cc0f6ae5cf90699f1f1c19bf802021a20c422d2c [2022-07-12 12:28:53,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:28:53,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:28:53,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:28:53,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:28:53,077 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:28:53,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2022-07-12 12:28:53,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29236660/8a142c0455734107bd1b657758b8f6b2/FLAGe0fc929e9 [2022-07-12 12:28:53,748 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:28:53,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2022-07-12 12:28:53,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29236660/8a142c0455734107bd1b657758b8f6b2/FLAGe0fc929e9 [2022-07-12 12:28:53,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b29236660/8a142c0455734107bd1b657758b8f6b2 [2022-07-12 12:28:53,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:28:53,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:28:53,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:28:53,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:28:53,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:28:53,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:28:53" (1/1) ... [2022-07-12 12:28:53,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad264e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:53, skipping insertion in model container [2022-07-12 12:28:53,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:28:53" (1/1) ... [2022-07-12 12:28:53,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:28:54,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:28:54,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i[153287,153300] [2022-07-12 12:28:54,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:28:54,753 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:28:54,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i[153287,153300] [2022-07-12 12:28:54,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:28:54,980 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:28:54,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54 WrapperNode [2022-07-12 12:28:54,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:28:54,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:28:54,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:28:54,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:28:54,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54" (1/1) ... [2022-07-12 12:28:55,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54" (1/1) ... [2022-07-12 12:28:55,079 INFO L137 Inliner]: procedures = 82, calls = 140, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 461 [2022-07-12 12:28:55,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:28:55,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:28:55,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:28:55,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:28:55,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54" (1/1) ... [2022-07-12 12:28:55,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54" (1/1) ... [2022-07-12 12:28:55,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54" (1/1) ... [2022-07-12 12:28:55,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54" (1/1) ... [2022-07-12 12:28:55,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54" (1/1) ... [2022-07-12 12:28:55,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54" (1/1) ... [2022-07-12 12:28:55,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54" (1/1) ... [2022-07-12 12:28:55,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:28:55,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:28:55,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:28:55,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:28:55,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54" (1/1) ... [2022-07-12 12:28:55,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:28:55,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:28:55,234 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) [2022-07-12 12:28:55,242 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 [2022-07-12 12:28:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:28:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:28:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:28:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:28:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:28:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:28:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 12:28:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 12:28:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:28:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:28:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-12 12:28:55,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-12 12:28:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 12:28:55,278 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 12:28:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:28:55,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:28:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:28:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:28:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-12 12:28:55,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-12 12:28:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:28:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:28:55,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:28:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-12 12:28:55,280 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-12 12:28:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 12:28:55,280 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 12:28:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:28:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:28:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2022-07-12 12:28:55,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2022-07-12 12:28:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:28:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 12:28:55,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 12:28:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:28:55,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:28:55,614 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:28:55,621 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:28:55,733 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 12:28:56,307 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:28:56,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:28:56,315 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 12:28:56,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:28:56 BoogieIcfgContainer [2022-07-12 12:28:56,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:28:56,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:28:56,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:28:56,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:28:56,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:28:53" (1/3) ... [2022-07-12 12:28:56,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df12e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:28:56, skipping insertion in model container [2022-07-12 12:28:56,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:28:54" (2/3) ... [2022-07-12 12:28:56,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df12e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:28:56, skipping insertion in model container [2022-07-12 12:28:56,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:28:56" (3/3) ... [2022-07-12 12:28:56,328 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2022-07-12 12:28:56,343 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:28:56,343 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:28:56,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:28:56,413 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ca77182, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@651a0590 [2022-07-12 12:28:56,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:28:56,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 131 states have (on average 1.4198473282442747) internal successors, (186), 136 states have internal predecessors, (186), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-12 12:28:56,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 12:28:56,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:28:56,438 INFO L195 NwaCegarLoop]: 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] [2022-07-12 12:28:56,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:28:56,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:28:56,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1048731652, now seen corresponding path program 1 times [2022-07-12 12:28:56,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:28:56,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368850459] [2022-07-12 12:28:56,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:28:56,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:28:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:56,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:28:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:28:56,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:28:56,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368850459] [2022-07-12 12:28:56,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368850459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:28:56,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:28:56,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:28:56,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425560599] [2022-07-12 12:28:56,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:28:56,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:28:56,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:28:56,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:28:56,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:28:56,819 INFO L87 Difference]: Start difference. First operand has 164 states, 131 states have (on average 1.4198473282442747) internal successors, (186), 136 states have internal predecessors, (186), 22 states have call successors, (22), 10 states have call predecessors, (22), 9 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:28:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:28:57,310 INFO L93 Difference]: Finished difference Result 500 states and 731 transitions. [2022-07-12 12:28:57,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:28:57,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-07-12 12:28:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:28:57,334 INFO L225 Difference]: With dead ends: 500 [2022-07-12 12:28:57,335 INFO L226 Difference]: Without dead ends: 327 [2022-07-12 12:28:57,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:28:57,353 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 275 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:28:57,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 496 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 12:28:57,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-12 12:28:57,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 279. [2022-07-12 12:28:57,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 228 states have (on average 1.3421052631578947) internal successors, (306), 228 states have internal predecessors, (306), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 12:28:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 373 transitions. [2022-07-12 12:28:57,461 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 373 transitions. Word has length 25 [2022-07-12 12:28:57,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:28:57,461 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 373 transitions. [2022-07-12 12:28:57,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:28:57,462 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 373 transitions. [2022-07-12 12:28:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 12:28:57,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:28:57,465 INFO L195 NwaCegarLoop]: 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] [2022-07-12 12:28:57,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:28:57,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:28:57,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:28:57,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1324273599, now seen corresponding path program 1 times [2022-07-12 12:28:57,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:28:57,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604660366] [2022-07-12 12:28:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:28:57,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:28:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:57,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:28:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:28:57,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:28:57,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604660366] [2022-07-12 12:28:57,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604660366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:28:57,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:28:57,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 12:28:57,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512798483] [2022-07-12 12:28:57,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:28:57,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:28:57,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:28:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:28:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:28:57,669 INFO L87 Difference]: Start difference. First operand 279 states and 373 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:28:57,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:28:57,971 INFO L93 Difference]: Finished difference Result 602 states and 813 transitions. [2022-07-12 12:28:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:28:57,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-07-12 12:28:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:28:57,980 INFO L225 Difference]: With dead ends: 602 [2022-07-12 12:28:57,980 INFO L226 Difference]: Without dead ends: 331 [2022-07-12 12:28:57,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 12:28:57,989 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 49 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:28:57,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 458 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:28:57,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-07-12 12:28:58,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 280. [2022-07-12 12:28:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 229 states have (on average 1.3406113537117903) internal successors, (307), 229 states have internal predecessors, (307), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 12:28:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 374 transitions. [2022-07-12 12:28:58,031 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 374 transitions. Word has length 30 [2022-07-12 12:28:58,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:28:58,032 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 374 transitions. [2022-07-12 12:28:58,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:28:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 374 transitions. [2022-07-12 12:28:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 12:28:58,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:28:58,040 INFO L195 NwaCegarLoop]: 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] [2022-07-12 12:28:58,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:28:58,041 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:28:58,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:28:58,042 INFO L85 PathProgramCache]: Analyzing trace with hash -115857752, now seen corresponding path program 1 times [2022-07-12 12:28:58,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:28:58,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318486602] [2022-07-12 12:28:58,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:28:58,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:28:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:58,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:28:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:28:58,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:28:58,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318486602] [2022-07-12 12:28:58,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318486602] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:28:58,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805252248] [2022-07-12 12:28:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:28:58,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:28:58,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:28:58,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:28:58,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 12:28:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:58,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:28:58,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:28:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:28:58,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:28:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:28:58,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805252248] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:28:58,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:28:58,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-07-12 12:28:58,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967247922] [2022-07-12 12:28:58,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:28:58,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:28:58,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:28:58,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:28:58,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:28:58,506 INFO L87 Difference]: Start difference. First operand 280 states and 374 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:28:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:28:58,878 INFO L93 Difference]: Finished difference Result 612 states and 827 transitions. [2022-07-12 12:28:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:28:58,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-07-12 12:28:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:28:58,881 INFO L225 Difference]: With dead ends: 612 [2022-07-12 12:28:58,881 INFO L226 Difference]: Without dead ends: 340 [2022-07-12 12:28:58,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:28:58,883 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 63 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:28:58,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 762 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 12:28:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-07-12 12:28:58,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 292. [2022-07-12 12:28:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 241 states have (on average 1.3360995850622406) internal successors, (322), 241 states have internal predecessors, (322), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 12:28:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 389 transitions. [2022-07-12 12:28:58,900 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 389 transitions. Word has length 34 [2022-07-12 12:28:58,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:28:58,901 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 389 transitions. [2022-07-12 12:28:58,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:28:58,901 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 389 transitions. [2022-07-12 12:28:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-12 12:28:58,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:28:58,903 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:28:58,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 12:28:59,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:28:59,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:28:59,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:28:59,125 INFO L85 PathProgramCache]: Analyzing trace with hash -124336931, now seen corresponding path program 2 times [2022-07-12 12:28:59,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:28:59,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264652750] [2022-07-12 12:28:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:28:59,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:28:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:28:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 12:28:59,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:28:59,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264652750] [2022-07-12 12:28:59,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264652750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:28:59,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:28:59,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:28:59,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124437122] [2022-07-12 12:28:59,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:28:59,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:28:59,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:28:59,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:28:59,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:28:59,273 INFO L87 Difference]: Start difference. First operand 292 states and 389 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:28:59,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:28:59,648 INFO L93 Difference]: Finished difference Result 623 states and 837 transitions. [2022-07-12 12:28:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:28:59,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-07-12 12:28:59,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:28:59,652 INFO L225 Difference]: With dead ends: 623 [2022-07-12 12:28:59,652 INFO L226 Difference]: Without dead ends: 339 [2022-07-12 12:28:59,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:28:59,654 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 356 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:28:59,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 614 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 12:28:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-12 12:28:59,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 291. [2022-07-12 12:28:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 240 states have (on average 1.325) internal successors, (318), 240 states have internal predecessors, (318), 34 states have call successors, (34), 17 states have call predecessors, (34), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 12:28:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 385 transitions. [2022-07-12 12:28:59,672 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 385 transitions. Word has length 46 [2022-07-12 12:28:59,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:28:59,672 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 385 transitions. [2022-07-12 12:28:59,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 12:28:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 385 transitions. [2022-07-12 12:28:59,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 12:28:59,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:28:59,675 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2022-07-12 12:28:59,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:28:59,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:28:59,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:28:59,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1440028180, now seen corresponding path program 1 times [2022-07-12 12:28:59,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:28:59,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795209399] [2022-07-12 12:28:59,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:28:59,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:28:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:59,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:28:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:28:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:28:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:28:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 12:28:59,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:28:59,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795209399] [2022-07-12 12:28:59,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795209399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:28:59,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:28:59,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:28:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273656032] [2022-07-12 12:28:59,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:28:59,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:28:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:28:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:28:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:28:59,836 INFO L87 Difference]: Start difference. First operand 291 states and 385 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 12:29:00,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:00,307 INFO L93 Difference]: Finished difference Result 946 states and 1278 transitions. [2022-07-12 12:29:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:29:00,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-12 12:29:00,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:00,312 INFO L225 Difference]: With dead ends: 946 [2022-07-12 12:29:00,312 INFO L226 Difference]: Without dead ends: 658 [2022-07-12 12:29:00,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:29:00,315 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 262 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:00,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 813 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 12:29:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-07-12 12:29:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 582. [2022-07-12 12:29:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 479 states have (on average 1.3298538622129437) internal successors, (637), 481 states have internal predecessors, (637), 66 states have call successors, (66), 33 states have call predecessors, (66), 36 states have return successors, (75), 67 states have call predecessors, (75), 65 states have call successors, (75) [2022-07-12 12:29:00,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 778 transitions. [2022-07-12 12:29:00,346 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 778 transitions. Word has length 67 [2022-07-12 12:29:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:00,346 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 778 transitions. [2022-07-12 12:29:00,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 12:29:00,347 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 778 transitions. [2022-07-12 12:29:00,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 12:29:00,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:00,351 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-12 12:29:00,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:29:00,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:00,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:00,353 INFO L85 PathProgramCache]: Analyzing trace with hash 338916268, now seen corresponding path program 1 times [2022-07-12 12:29:00,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:00,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817648665] [2022-07-12 12:29:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:00,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:00,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 12:29:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:00,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:29:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:00,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 12:29:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 12:29:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 12:29:00,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:00,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817648665] [2022-07-12 12:29:00,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817648665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:29:00,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:29:00,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:29:00,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995818339] [2022-07-12 12:29:00,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:29:00,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:29:00,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:29:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:29:00,472 INFO L87 Difference]: Start difference. First operand 582 states and 778 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 12:29:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:00,833 INFO L93 Difference]: Finished difference Result 1034 states and 1386 transitions. [2022-07-12 12:29:00,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 12:29:00,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 104 [2022-07-12 12:29:00,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:00,835 INFO L225 Difference]: With dead ends: 1034 [2022-07-12 12:29:00,836 INFO L226 Difference]: Without dead ends: 460 [2022-07-12 12:29:00,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:29:00,838 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 104 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:00,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 545 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 12:29:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-12 12:29:00,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 378. [2022-07-12 12:29:00,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 319 states have (on average 1.3322884012539185) internal successors, (425), 321 states have internal predecessors, (425), 37 states have call successors, (37), 19 states have call predecessors, (37), 21 states have return successors, (43), 37 states have call predecessors, (43), 36 states have call successors, (43) [2022-07-12 12:29:00,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 505 transitions. [2022-07-12 12:29:00,866 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 505 transitions. Word has length 104 [2022-07-12 12:29:00,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:00,866 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 505 transitions. [2022-07-12 12:29:00,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 12:29:00,867 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 505 transitions. [2022-07-12 12:29:00,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 12:29:00,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:00,870 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-12 12:29:00,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:29:00,870 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:00,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:00,871 INFO L85 PathProgramCache]: Analyzing trace with hash 335119820, now seen corresponding path program 2 times [2022-07-12 12:29:00,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:00,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558449881] [2022-07-12 12:29:00,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:00,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:00,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:00,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:29:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:00,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:29:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:00,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:29:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:01,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 12:29:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:01,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 12:29:01,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:01,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558449881] [2022-07-12 12:29:01,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558449881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:29:01,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:29:01,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:29:01,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625711764] [2022-07-12 12:29:01,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:29:01,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:29:01,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:01,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:29:01,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:29:01,092 INFO L87 Difference]: Start difference. First operand 378 states and 505 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 12:29:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:01,489 INFO L93 Difference]: Finished difference Result 748 states and 1012 transitions. [2022-07-12 12:29:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:29:01,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 104 [2022-07-12 12:29:01,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:01,493 INFO L225 Difference]: With dead ends: 748 [2022-07-12 12:29:01,493 INFO L226 Difference]: Without dead ends: 402 [2022-07-12 12:29:01,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:29:01,495 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 72 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:01,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 743 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 12:29:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-07-12 12:29:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 376. [2022-07-12 12:29:01,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 316 states have (on average 1.3227848101265822) internal successors, (418), 318 states have internal predecessors, (418), 37 states have call successors, (37), 19 states have call predecessors, (37), 22 states have return successors, (46), 38 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-12 12:29:01,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 501 transitions. [2022-07-12 12:29:01,513 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 501 transitions. Word has length 104 [2022-07-12 12:29:01,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:01,513 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 501 transitions. [2022-07-12 12:29:01,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 12:29:01,514 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 501 transitions. [2022-07-12 12:29:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 12:29:01,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:01,515 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:01,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:29:01,516 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:01,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:01,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1793628438, now seen corresponding path program 1 times [2022-07-12 12:29:01,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:01,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781867624] [2022-07-12 12:29:01,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:01,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:01,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:01,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:29:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:29:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:29:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:01,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 12:29:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:29:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 12:29:01,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:01,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781867624] [2022-07-12 12:29:01,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781867624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:29:01,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:29:01,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 12:29:01,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108703300] [2022-07-12 12:29:01,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:29:01,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 12:29:01,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:01,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 12:29:01,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:29:01,807 INFO L87 Difference]: Start difference. First operand 376 states and 501 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 12:29:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:02,535 INFO L93 Difference]: Finished difference Result 970 states and 1346 transitions. [2022-07-12 12:29:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 12:29:02,535 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2022-07-12 12:29:02,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:02,538 INFO L225 Difference]: With dead ends: 970 [2022-07-12 12:29:02,538 INFO L226 Difference]: Without dead ends: 626 [2022-07-12 12:29:02,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-12 12:29:02,540 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 150 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:02,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 2634 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 12:29:02,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-07-12 12:29:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 382. [2022-07-12 12:29:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 321 states have (on average 1.3115264797507789) internal successors, (421), 322 states have internal predecessors, (421), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (47), 40 states have call predecessors, (47), 36 states have call successors, (47) [2022-07-12 12:29:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 505 transitions. [2022-07-12 12:29:02,565 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 505 transitions. Word has length 111 [2022-07-12 12:29:02,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:02,567 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 505 transitions. [2022-07-12 12:29:02,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 12:29:02,567 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 505 transitions. [2022-07-12 12:29:02,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 12:29:02,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:02,569 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:02,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 12:29:02,570 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:02,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:02,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1834540397, now seen corresponding path program 1 times [2022-07-12 12:29:02,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:02,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002977606] [2022-07-12 12:29:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:02,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:02,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:29:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:29:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:02,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 12:29:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 12:29:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:02,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:29:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:29:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 12:29:02,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:02,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002977606] [2022-07-12 12:29:02,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002977606] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:29:02,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476941623] [2022-07-12 12:29:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:02,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:02,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:29:02,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:29:02,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 12:29:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:03,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 12:29:03,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:29:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 12:29:03,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:29:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 12:29:03,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476941623] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:29:03,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:29:03,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-07-12 12:29:03,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249958382] [2022-07-12 12:29:03,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:29:03,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 12:29:03,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 12:29:03,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-07-12 12:29:03,171 INFO L87 Difference]: Start difference. First operand 382 states and 505 transitions. Second operand has 16 states, 16 states have (on average 8.6875) internal successors, (139), 13 states have internal predecessors, (139), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:29:03,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:03,503 INFO L93 Difference]: Finished difference Result 800 states and 1076 transitions. [2022-07-12 12:29:03,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 12:29:03,504 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 13 states have internal predecessors, (139), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 117 [2022-07-12 12:29:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:03,506 INFO L225 Difference]: With dead ends: 800 [2022-07-12 12:29:03,506 INFO L226 Difference]: Without dead ends: 450 [2022-07-12 12:29:03,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-07-12 12:29:03,508 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 117 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:03,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 702 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 12:29:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-07-12 12:29:03,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 430. [2022-07-12 12:29:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 369 states have (on average 1.3035230352303524) internal successors, (481), 370 states have internal predecessors, (481), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (47), 40 states have call predecessors, (47), 36 states have call successors, (47) [2022-07-12 12:29:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 565 transitions. [2022-07-12 12:29:03,532 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 565 transitions. Word has length 117 [2022-07-12 12:29:03,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:03,533 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 565 transitions. [2022-07-12 12:29:03,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.6875) internal successors, (139), 13 states have internal predecessors, (139), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:29:03,533 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 565 transitions. [2022-07-12 12:29:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 12:29:03,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:03,538 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:03,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 12:29:03,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-12 12:29:03,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:03,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:03,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1065505129, now seen corresponding path program 2 times [2022-07-12 12:29:03,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:03,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400392864] [2022-07-12 12:29:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:03,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:03,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:03,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 12:29:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 12:29:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:03,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:29:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:29:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:04,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:04,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:29:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:04,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 12:29:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 7 proven. 190 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 12:29:04,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:04,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400392864] [2022-07-12 12:29:04,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400392864] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:29:04,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747755168] [2022-07-12 12:29:04,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:29:04,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:04,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:29:04,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:29:04,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 12:29:04,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 12:29:04,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:29:04,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-12 12:29:04,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:29:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-12 12:29:04,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:29:04,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747755168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:29:04,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:29:04,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [16] total 29 [2022-07-12 12:29:04,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929520543] [2022-07-12 12:29:04,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:29:04,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 12:29:04,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:04,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 12:29:04,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2022-07-12 12:29:04,631 INFO L87 Difference]: Start difference. First operand 430 states and 565 transitions. Second operand has 15 states, 14 states have (on average 5.714285714285714) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 12:29:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:05,044 INFO L93 Difference]: Finished difference Result 1098 states and 1476 transitions. [2022-07-12 12:29:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 12:29:05,045 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.714285714285714) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 141 [2022-07-12 12:29:05,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:05,049 INFO L225 Difference]: With dead ends: 1098 [2022-07-12 12:29:05,049 INFO L226 Difference]: Without dead ends: 700 [2022-07-12 12:29:05,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 12:29:05,051 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 297 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 3822 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:05,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 3822 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:29:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-07-12 12:29:05,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 440. [2022-07-12 12:29:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 377 states have (on average 1.297082228116711) internal successors, (489), 378 states have internal predecessors, (489), 39 states have call successors, (39), 19 states have call predecessors, (39), 23 states have return successors, (49), 42 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-12 12:29:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 577 transitions. [2022-07-12 12:29:05,084 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 577 transitions. Word has length 141 [2022-07-12 12:29:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:05,084 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 577 transitions. [2022-07-12 12:29:05,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.714285714285714) internal successors, (80), 12 states have internal predecessors, (80), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 12:29:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 577 transitions. [2022-07-12 12:29:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-12 12:29:05,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:05,087 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:05,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 12:29:05,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:05,308 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:05,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1149357710, now seen corresponding path program 1 times [2022-07-12 12:29:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:05,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341504935] [2022-07-12 12:29:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:05,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:05,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 12:29:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 12:29:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:29:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:29:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:05,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:05,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 12:29:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:05,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:29:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 12:29:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-12 12:29:05,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:05,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341504935] [2022-07-12 12:29:05,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341504935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:29:05,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:29:05,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:29:05,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616831999] [2022-07-12 12:29:05,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:29:05,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:29:05,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:05,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:29:05,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:29:05,525 INFO L87 Difference]: Start difference. First operand 440 states and 577 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-12 12:29:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:05,849 INFO L93 Difference]: Finished difference Result 673 states and 894 transitions. [2022-07-12 12:29:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:29:05,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 154 [2022-07-12 12:29:05,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:05,854 INFO L225 Difference]: With dead ends: 673 [2022-07-12 12:29:05,854 INFO L226 Difference]: Without dead ends: 462 [2022-07-12 12:29:05,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:29:05,858 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 167 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:05,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 567 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:29:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-07-12 12:29:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 442. [2022-07-12 12:29:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 379 states have (on average 1.2955145118733509) internal successors, (491), 380 states have internal predecessors, (491), 39 states have call successors, (39), 19 states have call predecessors, (39), 23 states have return successors, (49), 42 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-12 12:29:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 579 transitions. [2022-07-12 12:29:05,891 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 579 transitions. Word has length 154 [2022-07-12 12:29:05,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:05,892 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 579 transitions. [2022-07-12 12:29:05,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-12 12:29:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 579 transitions. [2022-07-12 12:29:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 12:29:05,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:05,895 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:05,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 12:29:05,895 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:05,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:05,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1983743405, now seen corresponding path program 1 times [2022-07-12 12:29:05,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:05,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780387598] [2022-07-12 12:29:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:05,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:06,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 12:29:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:06,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 12:29:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:29:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:29:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:06,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 12:29:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:06,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:29:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:06,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 12:29:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-12 12:29:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:06,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780387598] [2022-07-12 12:29:06,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780387598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:29:06,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:29:06,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 12:29:06,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993756760] [2022-07-12 12:29:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:29:06,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 12:29:06,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:06,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 12:29:06,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:29:06,180 INFO L87 Difference]: Start difference. First operand 442 states and 579 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 12:29:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:06,878 INFO L93 Difference]: Finished difference Result 880 states and 1161 transitions. [2022-07-12 12:29:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 12:29:06,879 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-07-12 12:29:06,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:06,881 INFO L225 Difference]: With dead ends: 880 [2022-07-12 12:29:06,882 INFO L226 Difference]: Without dead ends: 470 [2022-07-12 12:29:06,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2022-07-12 12:29:06,883 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 513 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:06,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 808 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 12:29:06,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-07-12 12:29:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 440. [2022-07-12 12:29:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 377 states have (on average 1.2891246684350133) internal successors, (486), 378 states have internal predecessors, (486), 39 states have call successors, (39), 19 states have call predecessors, (39), 23 states have return successors, (48), 42 states have call predecessors, (48), 38 states have call successors, (48) [2022-07-12 12:29:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 573 transitions. [2022-07-12 12:29:06,926 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 573 transitions. Word has length 156 [2022-07-12 12:29:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:06,926 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 573 transitions. [2022-07-12 12:29:06,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 12:29:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 573 transitions. [2022-07-12 12:29:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 12:29:06,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:06,929 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:06,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 12:29:06,929 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:06,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:06,930 INFO L85 PathProgramCache]: Analyzing trace with hash -2106669318, now seen corresponding path program 1 times [2022-07-12 12:29:06,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:06,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182336925] [2022-07-12 12:29:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:06,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 12:29:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 12:29:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 12:29:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 12:29:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:29:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 12:29:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 12:29:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-12 12:29:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 12:29:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,261 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 7 proven. 190 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 12:29:07,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:07,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182336925] [2022-07-12 12:29:07,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182336925] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:29:07,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444406548] [2022-07-12 12:29:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:07,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:07,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:29:07,268 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:29:07,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 12:29:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:07,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 12:29:07,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:29:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 19 proven. 190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 12:29:07,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:29:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 7 proven. 190 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 12:29:07,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444406548] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:29:07,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:29:07,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 30 [2022-07-12 12:29:07,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638564517] [2022-07-12 12:29:07,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:29:07,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 12:29:07,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:07,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 12:29:07,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=554, Unknown=0, NotChecked=0, Total=870 [2022-07-12 12:29:07,943 INFO L87 Difference]: Start difference. First operand 440 states and 573 transitions. Second operand has 30 states, 30 states have (on average 7.2) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:29:08,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:08,544 INFO L93 Difference]: Finished difference Result 966 states and 1287 transitions. [2022-07-12 12:29:08,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 12:29:08,547 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.2) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 168 [2022-07-12 12:29:08,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:08,550 INFO L225 Difference]: With dead ends: 966 [2022-07-12 12:29:08,550 INFO L226 Difference]: Without dead ends: 558 [2022-07-12 12:29:08,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=322, Invalid=608, Unknown=0, NotChecked=0, Total=930 [2022-07-12 12:29:08,556 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 178 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:08,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1338 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 12:29:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-07-12 12:29:08,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 536. [2022-07-12 12:29:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 473 states have (on average 1.2811839323467231) internal successors, (606), 474 states have internal predecessors, (606), 39 states have call successors, (39), 19 states have call predecessors, (39), 23 states have return successors, (48), 42 states have call predecessors, (48), 38 states have call successors, (48) [2022-07-12 12:29:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 693 transitions. [2022-07-12 12:29:08,594 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 693 transitions. Word has length 168 [2022-07-12 12:29:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:08,594 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 693 transitions. [2022-07-12 12:29:08,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.2) internal successors, (216), 25 states have internal predecessors, (216), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:29:08,595 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 693 transitions. [2022-07-12 12:29:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-12 12:29:08,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:08,599 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:08,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-12 12:29:08,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:08,811 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:08,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1303518258, now seen corresponding path program 2 times [2022-07-12 12:29:08,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:08,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159158671] [2022-07-12 12:29:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:08,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 12:29:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:29:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 12:29:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 12:29:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:29:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 12:29:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 12:29:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-12 12:29:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 12:29:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 7 proven. 946 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 12:29:09,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:09,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159158671] [2022-07-12 12:29:09,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159158671] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:29:09,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098349504] [2022-07-12 12:29:09,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:29:09,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:09,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:29:09,387 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:29:09,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 12:29:09,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 12:29:09,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:29:09,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 12:29:09,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:29:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 976 trivial. 0 not checked. [2022-07-12 12:29:09,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:29:09,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098349504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:29:09,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:29:09,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [30] total 31 [2022-07-12 12:29:09,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945393660] [2022-07-12 12:29:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:29:09,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:29:09,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:09,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:29:09,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2022-07-12 12:29:09,677 INFO L87 Difference]: Start difference. First operand 536 states and 693 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 12:29:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:09,733 INFO L93 Difference]: Finished difference Result 1346 states and 1766 transitions. [2022-07-12 12:29:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:29:09,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 216 [2022-07-12 12:29:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:09,738 INFO L225 Difference]: With dead ends: 1346 [2022-07-12 12:29:09,738 INFO L226 Difference]: Without dead ends: 842 [2022-07-12 12:29:09,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2022-07-12 12:29:09,741 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 83 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:09,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 471 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:29:09,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-07-12 12:29:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 532. [2022-07-12 12:29:09,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 471 states have (on average 1.2781316348195328) internal successors, (602), 472 states have internal predecessors, (602), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-12 12:29:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 685 transitions. [2022-07-12 12:29:09,796 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 685 transitions. Word has length 216 [2022-07-12 12:29:09,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:09,797 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 685 transitions. [2022-07-12 12:29:09,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 12:29:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 685 transitions. [2022-07-12 12:29:09,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-12 12:29:09,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:09,800 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:09,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 12:29:10,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 12:29:10,022 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:10,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:10,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1768078862, now seen corresponding path program 1 times [2022-07-12 12:29:10,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:10,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859664741] [2022-07-12 12:29:10,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:10,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 12:29:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 12:29:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 12:29:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 12:29:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:29:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 12:29:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 12:29:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-12 12:29:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-12 12:29:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 7 proven. 946 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 12:29:10,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:10,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859664741] [2022-07-12 12:29:10,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859664741] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:29:10,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703152837] [2022-07-12 12:29:10,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:10,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:10,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:29:10,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:29:10,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 12:29:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:10,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 12:29:10,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:29:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 19 proven. 946 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 12:29:11,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:29:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 983 backedges. 7 proven. 946 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 12:29:11,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703152837] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:29:11,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:29:11,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 54 [2022-07-12 12:29:11,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745769185] [2022-07-12 12:29:11,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:29:11,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-07-12 12:29:11,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:11,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-07-12 12:29:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1192, Invalid=1670, Unknown=0, NotChecked=0, Total=2862 [2022-07-12 12:29:11,992 INFO L87 Difference]: Start difference. First operand 532 states and 685 transitions. Second operand has 54 states, 54 states have (on average 5.777777777777778) internal successors, (312), 49 states have internal predecessors, (312), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:29:12,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:12,778 INFO L93 Difference]: Finished difference Result 1246 states and 1653 transitions. [2022-07-12 12:29:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-12 12:29:12,779 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.777777777777778) internal successors, (312), 49 states have internal predecessors, (312), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 216 [2022-07-12 12:29:12,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:12,783 INFO L225 Difference]: With dead ends: 1246 [2022-07-12 12:29:12,783 INFO L226 Difference]: Without dead ends: 746 [2022-07-12 12:29:12,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1198, Invalid=1772, Unknown=0, NotChecked=0, Total=2970 [2022-07-12 12:29:12,789 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 512 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:12,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 967 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 12:29:12,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-07-12 12:29:12,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 724. [2022-07-12 12:29:12,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 663 states have (on average 1.2699849170437405) internal successors, (842), 664 states have internal predecessors, (842), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-12 12:29:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 925 transitions. [2022-07-12 12:29:12,848 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 925 transitions. Word has length 216 [2022-07-12 12:29:12,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:12,848 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 925 transitions. [2022-07-12 12:29:12,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.777777777777778) internal successors, (312), 49 states have internal predecessors, (312), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:29:12,849 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 925 transitions. [2022-07-12 12:29:12,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-07-12 12:29:12,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:12,854 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:12,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 12:29:13,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 12:29:13,080 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:13,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:13,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1934856118, now seen corresponding path program 2 times [2022-07-12 12:29:13,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:13,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531617314] [2022-07-12 12:29:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:13,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 12:29:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-12 12:29:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-12 12:29:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-12 12:29:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:29:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-12 12:29:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-12 12:29:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-12 12:29:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-12 12:29:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4223 backedges. 7 proven. 4186 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 12:29:14,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:14,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531617314] [2022-07-12 12:29:14,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531617314] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:29:14,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666432794] [2022-07-12 12:29:14,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:29:14,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:14,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:29:14,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:29:14,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 12:29:14,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 12:29:14,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:29:14,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 12:29:14,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:29:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4223 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4216 trivial. 0 not checked. [2022-07-12 12:29:14,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:29:14,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666432794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:29:14,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:29:14,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [54] total 57 [2022-07-12 12:29:14,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805099616] [2022-07-12 12:29:14,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:29:14,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:29:14,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:14,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:29:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1198, Invalid=1994, Unknown=0, NotChecked=0, Total=3192 [2022-07-12 12:29:14,863 INFO L87 Difference]: Start difference. First operand 724 states and 925 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 12:29:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:15,048 INFO L93 Difference]: Finished difference Result 1924 states and 2484 transitions. [2022-07-12 12:29:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:29:15,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 312 [2022-07-12 12:29:15,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:15,054 INFO L225 Difference]: With dead ends: 1924 [2022-07-12 12:29:15,054 INFO L226 Difference]: Without dead ends: 1228 [2022-07-12 12:29:15,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1202, Invalid=2104, Unknown=0, NotChecked=0, Total=3306 [2022-07-12 12:29:15,058 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 84 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:15,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1018 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:29:15,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2022-07-12 12:29:15,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 726. [2022-07-12 12:29:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 665 states have (on average 1.2691729323308272) internal successors, (844), 666 states have internal predecessors, (844), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-12 12:29:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 927 transitions. [2022-07-12 12:29:15,124 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 927 transitions. Word has length 312 [2022-07-12 12:29:15,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:15,124 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 927 transitions. [2022-07-12 12:29:15,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 12:29:15,125 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 927 transitions. [2022-07-12 12:29:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-07-12 12:29:15,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:15,129 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:15,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 12:29:15,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:15,343 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1480488866, now seen corresponding path program 1 times [2022-07-12 12:29:15,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:15,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918468142] [2022-07-12 12:29:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:15,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-12 12:29:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-12 12:29:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-12 12:29:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-07-12 12:29:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:29:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-12 12:29:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-07-12 12:29:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-12 12:29:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2022-07-12 12:29:16,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 7 proven. 4186 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 12:29:16,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:16,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918468142] [2022-07-12 12:29:16,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918468142] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:29:16,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105145738] [2022-07-12 12:29:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:16,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:16,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:29:16,613 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:29:16,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 12:29:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:17,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-12 12:29:17,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:29:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 19 proven. 4186 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 12:29:17,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:29:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4224 backedges. 7 proven. 4186 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 12:29:19,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105145738] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:29:19,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:29:19,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 102 [2022-07-12 12:29:19,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117212448] [2022-07-12 12:29:19,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:29:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-07-12 12:29:19,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-07-12 12:29:19,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4672, Invalid=5630, Unknown=0, NotChecked=0, Total=10302 [2022-07-12 12:29:19,770 INFO L87 Difference]: Start difference. First operand 726 states and 927 transitions. Second operand has 102 states, 102 states have (on average 4.96078431372549) internal successors, (506), 97 states have internal predecessors, (506), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:29:21,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:21,241 INFO L93 Difference]: Finished difference Result 1822 states and 2419 transitions. [2022-07-12 12:29:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-07-12 12:29:21,242 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 4.96078431372549) internal successors, (506), 97 states have internal predecessors, (506), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 313 [2022-07-12 12:29:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:21,247 INFO L225 Difference]: With dead ends: 1822 [2022-07-12 12:29:21,247 INFO L226 Difference]: Without dead ends: 1128 [2022-07-12 12:29:21,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4678, Invalid=5828, Unknown=0, NotChecked=0, Total=10506 [2022-07-12 12:29:21,252 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 968 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:21,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1384 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 12:29:21,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-07-12 12:29:21,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 1110. [2022-07-12 12:29:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1049 states have (on average 1.2621544327931362) internal successors, (1324), 1050 states have internal predecessors, (1324), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-12 12:29:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1407 transitions. [2022-07-12 12:29:21,359 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1407 transitions. Word has length 313 [2022-07-12 12:29:21,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:21,360 INFO L495 AbstractCegarLoop]: Abstraction has 1110 states and 1407 transitions. [2022-07-12 12:29:21,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 4.96078431372549) internal successors, (506), 97 states have internal predecessors, (506), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:29:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1407 transitions. [2022-07-12 12:29:21,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-07-12 12:29:21,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:21,369 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:21,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 12:29:21,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 12:29:21,583 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:21,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:21,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1574301454, now seen corresponding path program 2 times [2022-07-12 12:29:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:21,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595780209] [2022-07-12 12:29:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:21,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-07-12 12:29:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-07-12 12:29:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-07-12 12:29:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-07-12 12:29:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:29:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-07-12 12:29:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-07-12 12:29:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-07-12 12:29:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2022-07-12 12:29:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 17616 backedges. 7 proven. 17578 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 12:29:25,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:25,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595780209] [2022-07-12 12:29:25,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595780209] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:29:25,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744326650] [2022-07-12 12:29:25,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:29:25,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:25,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:29:25,276 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:29:25,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 12:29:25,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 12:29:25,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:29:25,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 12:29:25,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:29:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 17616 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17609 trivial. 0 not checked. [2022-07-12 12:29:25,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:29:25,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744326650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:29:25,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:29:25,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [102] total 105 [2022-07-12 12:29:25,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741265436] [2022-07-12 12:29:25,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:29:25,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:29:25,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:25,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:29:25,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4678, Invalid=6242, Unknown=0, NotChecked=0, Total=10920 [2022-07-12 12:29:25,925 INFO L87 Difference]: Start difference. First operand 1110 states and 1407 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 12:29:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:26,151 INFO L93 Difference]: Finished difference Result 3078 states and 3928 transitions. [2022-07-12 12:29:26,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 12:29:26,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 505 [2022-07-12 12:29:26,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:26,165 INFO L225 Difference]: With dead ends: 3078 [2022-07-12 12:29:26,166 INFO L226 Difference]: Without dead ends: 1998 [2022-07-12 12:29:26,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4682, Invalid=6448, Unknown=0, NotChecked=0, Total=11130 [2022-07-12 12:29:26,173 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 83 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:26,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1018 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:29:26,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2022-07-12 12:29:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1112. [2022-07-12 12:29:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1051 states have (on average 1.2616555661274975) internal successors, (1326), 1052 states have internal predecessors, (1326), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-12 12:29:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1409 transitions. [2022-07-12 12:29:26,275 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1409 transitions. Word has length 505 [2022-07-12 12:29:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:26,275 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1409 transitions. [2022-07-12 12:29:26,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 12:29:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1409 transitions. [2022-07-12 12:29:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2022-07-12 12:29:26,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:26,284 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:26,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-12 12:29:26,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 12:29:26,507 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:26,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash -249914232, now seen corresponding path program 1 times [2022-07-12 12:29:26,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:26,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279218544] [2022-07-12 12:29:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:26,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:29,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-07-12 12:29:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:29,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-07-12 12:29:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:29,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2022-07-12 12:29:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-07-12 12:29:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:30,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:29:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:30,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-07-12 12:29:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:30,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2022-07-12 12:29:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:30,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2022-07-12 12:29:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:30,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-07-12 12:29:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 17617 backedges. 7 proven. 17578 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 12:29:30,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:30,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279218544] [2022-07-12 12:29:30,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279218544] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:29:30,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166262330] [2022-07-12 12:29:30,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:30,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:30,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:29:30,229 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:29:30,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 12:29:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:31,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 2961 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-12 12:29:31,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:29:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 17617 backedges. 19 proven. 17578 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 12:29:31,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:29:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 17617 backedges. 7 proven. 17578 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 12:29:40,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166262330] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:29:40,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:29:40,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 97, 97] total 198 [2022-07-12 12:29:40,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662956515] [2022-07-12 12:29:40,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:29:40,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2022-07-12 12:29:40,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:29:40,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2022-07-12 12:29:40,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18544, Invalid=20462, Unknown=0, NotChecked=0, Total=39006 [2022-07-12 12:29:40,275 INFO L87 Difference]: Start difference. First operand 1112 states and 1409 transitions. Second operand has 198 states, 198 states have (on average 4.505050505050505) internal successors, (892), 193 states have internal predecessors, (892), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:29:45,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:29:45,959 INFO L93 Difference]: Finished difference Result 2974 states and 3953 transitions. [2022-07-12 12:29:45,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-07-12 12:29:45,960 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 198 states have (on average 4.505050505050505) internal successors, (892), 193 states have internal predecessors, (892), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 506 [2022-07-12 12:29:45,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:29:45,968 INFO L225 Difference]: With dead ends: 2974 [2022-07-12 12:29:45,969 INFO L226 Difference]: Without dead ends: 1894 [2022-07-12 12:29:45,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=18550, Invalid=20852, Unknown=0, NotChecked=0, Total=39402 [2022-07-12 12:29:45,975 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1839 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:29:45,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 1895 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 12:29:45,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2022-07-12 12:29:46,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1880. [2022-07-12 12:29:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1819 states have (on average 1.2567344694887301) internal successors, (2286), 1820 states have internal predecessors, (2286), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-12 12:29:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2369 transitions. [2022-07-12 12:29:46,183 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2369 transitions. Word has length 506 [2022-07-12 12:29:46,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:29:46,184 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 2369 transitions. [2022-07-12 12:29:46,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 198 states have (on average 4.505050505050505) internal successors, (892), 193 states have internal predecessors, (892), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:29:46,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2369 transitions. [2022-07-12 12:29:46,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2022-07-12 12:29:46,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:29:46,193 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:29:46,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 12:29:46,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:46,407 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:29:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:29:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash 164952872, now seen corresponding path program 2 times [2022-07-12 12:29:46,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:29:46,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923261415] [2022-07-12 12:29:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:29:46,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:29:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:29:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:58,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2022-07-12 12:29:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:58,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 790 [2022-07-12 12:29:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 805 [2022-07-12 12:29:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2022-07-12 12:29:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:29:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:29:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2022-07-12 12:29:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 847 [2022-07-12 12:29:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2022-07-12 12:29:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2022-07-12 12:29:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:29:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 72049 backedges. 7 proven. 72010 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 12:29:59,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:29:59,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923261415] [2022-07-12 12:29:59,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923261415] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:29:59,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690814445] [2022-07-12 12:29:59,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:29:59,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:29:59,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:29:59,304 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:29:59,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 12:30:00,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:30:00,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:30:00,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 4977 conjuncts, 192 conjunts are in the unsatisfiable core [2022-07-12 12:30:00,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:30:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 72049 backedges. 19 proven. 72010 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 12:30:01,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:30:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 72049 backedges. 7 proven. 72010 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 12:30:11,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690814445] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:30:11,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:30:11,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 193, 193] total 264 [2022-07-12 12:30:11,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453798433] [2022-07-12 12:30:11,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:30:11,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2022-07-12 12:30:11,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:30:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2022-07-12 12:30:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33427, Invalid=36005, Unknown=0, NotChecked=0, Total=69432 [2022-07-12 12:30:11,139 INFO L87 Difference]: Start difference. First operand 1880 states and 2369 transitions. Second operand has 264 states, 264 states have (on average 4.393939393939394) internal successors, (1160), 259 states have internal predecessors, (1160), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:30:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:30:23,831 INFO L93 Difference]: Finished difference Result 4270 states and 5513 transitions. [2022-07-12 12:30:23,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-07-12 12:30:23,832 INFO L78 Accepts]: Start accepts. Automaton has has 264 states, 264 states have (on average 4.393939393939394) internal successors, (1160), 259 states have internal predecessors, (1160), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 890 [2022-07-12 12:30:23,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:30:23,842 INFO L225 Difference]: With dead ends: 4270 [2022-07-12 12:30:23,843 INFO L226 Difference]: Without dead ends: 2422 [2022-07-12 12:30:23,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1995 GetRequests, 1732 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1859 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=33433, Invalid=36527, Unknown=0, NotChecked=0, Total=69960 [2022-07-12 12:30:23,852 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 2204 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:30:23,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2205 Valid, 1916 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 12:30:23,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2022-07-12 12:30:24,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2408. [2022-07-12 12:30:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2347 states have (on average 1.2552194290583725) internal successors, (2946), 2348 states have internal predecessors, (2946), 37 states have call successors, (37), 19 states have call predecessors, (37), 23 states have return successors, (46), 40 states have call predecessors, (46), 36 states have call successors, (46) [2022-07-12 12:30:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3029 transitions. [2022-07-12 12:30:24,056 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3029 transitions. Word has length 890 [2022-07-12 12:30:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:30:24,057 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 3029 transitions. [2022-07-12 12:30:24,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 264 states, 264 states have (on average 4.393939393939394) internal successors, (1160), 259 states have internal predecessors, (1160), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 12:30:24,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3029 transitions. [2022-07-12 12:30:24,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1155 [2022-07-12 12:30:24,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:30:24,071 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 256, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:30:24,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 12:30:24,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:30:24,300 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:30:24,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:30:24,300 INFO L85 PathProgramCache]: Analyzing trace with hash -166726346, now seen corresponding path program 3 times [2022-07-12 12:30:24,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:30:24,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474939858] [2022-07-12 12:30:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:24,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:30:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:30:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2022-07-12 12:30:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2022-07-12 12:30:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2022-07-12 12:30:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2022-07-12 12:30:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:30:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1100 [2022-07-12 12:30:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2022-07-12 12:30:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1119 [2022-07-12 12:30:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1130 [2022-07-12 12:30:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 130855 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 130848 trivial. 0 not checked. [2022-07-12 12:30:26,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:30:26,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474939858] [2022-07-12 12:30:26,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474939858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:30:26,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:30:26,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 12:30:26,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310847038] [2022-07-12 12:30:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:30:26,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 12:30:26,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:30:26,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 12:30:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:30:26,207 INFO L87 Difference]: Start difference. First operand 2408 states and 3029 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 8 states have internal predecessors, (99), 5 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-12 12:30:27,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:30:27,338 INFO L93 Difference]: Finished difference Result 4846 states and 6105 transitions. [2022-07-12 12:30:27,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 12:30:27,339 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 8 states have internal predecessors, (99), 5 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 1154 [2022-07-12 12:30:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:30:27,352 INFO L225 Difference]: With dead ends: 4846 [2022-07-12 12:30:27,353 INFO L226 Difference]: Without dead ends: 3649 [2022-07-12 12:30:27,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2022-07-12 12:30:27,356 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1233 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:30:27,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1429 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 12:30:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2022-07-12 12:30:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 3601. [2022-07-12 12:30:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 3511 states have (on average 1.2560524067217318) internal successors, (4410), 3514 states have internal predecessors, (4410), 54 states have call successors, (54), 27 states have call predecessors, (54), 35 states have return successors, (69), 59 states have call predecessors, (69), 53 states have call successors, (69) [2022-07-12 12:30:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 4533 transitions. [2022-07-12 12:30:27,772 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 4533 transitions. Word has length 1154 [2022-07-12 12:30:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:30:27,773 INFO L495 AbstractCegarLoop]: Abstraction has 3601 states and 4533 transitions. [2022-07-12 12:30:27,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 8 states have internal predecessors, (99), 5 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-12 12:30:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 4533 transitions. [2022-07-12 12:30:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1157 [2022-07-12 12:30:27,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:30:27,790 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 256, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:30:27,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 12:30:27,790 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:30:27,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:30:27,791 INFO L85 PathProgramCache]: Analyzing trace with hash 263245175, now seen corresponding path program 1 times [2022-07-12 12:30:27,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:30:27,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049799290] [2022-07-12 12:30:27,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:27,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:30:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:30:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2022-07-12 12:30:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2022-07-12 12:30:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2022-07-12 12:30:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2022-07-12 12:30:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:30:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:30:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1100 [2022-07-12 12:30:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2022-07-12 12:30:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1119 [2022-07-12 12:30:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:29,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1130 [2022-07-12 12:30:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:30:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 130855 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 130848 trivial. 0 not checked. [2022-07-12 12:30:29,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:30:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049799290] [2022-07-12 12:30:29,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049799290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:30:29,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:30:29,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 12:30:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826008719] [2022-07-12 12:30:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:30:29,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 12:30:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:30:29,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 12:30:29,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:30:29,031 INFO L87 Difference]: Start difference. First operand 3601 states and 4533 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-12 12:30:29,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:30:29,599 INFO L93 Difference]: Finished difference Result 6010 states and 7577 transitions. [2022-07-12 12:30:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:30:29,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 1156 [2022-07-12 12:30:29,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:30:29,616 INFO L225 Difference]: With dead ends: 6010 [2022-07-12 12:30:29,616 INFO L226 Difference]: Without dead ends: 3623 [2022-07-12 12:30:29,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:30:29,622 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 96 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:30:29,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 906 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 12:30:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2022-07-12 12:30:29,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3601. [2022-07-12 12:30:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 3511 states have (on average 1.2554827684420393) internal successors, (4408), 3514 states have internal predecessors, (4408), 54 states have call successors, (54), 27 states have call predecessors, (54), 35 states have return successors, (69), 59 states have call predecessors, (69), 53 states have call successors, (69) [2022-07-12 12:30:29,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 4531 transitions. [2022-07-12 12:30:29,945 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 4531 transitions. Word has length 1156 [2022-07-12 12:30:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:30:29,946 INFO L495 AbstractCegarLoop]: Abstraction has 3601 states and 4531 transitions. [2022-07-12 12:30:29,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-12 12:30:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 4531 transitions. [2022-07-12 12:30:29,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1159 [2022-07-12 12:30:29,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:30:29,958 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 256, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:30:29,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 12:30:29,959 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:30:29,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:30:29,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2137122658, now seen corresponding path program 1 times [2022-07-12 12:30:29,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:30:29,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087208724] [2022-07-12 12:30:29,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:30:29,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:31:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:25,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:31:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2022-07-12 12:31:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:25,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2022-07-12 12:31:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:25,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2022-07-12 12:31:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:25,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2022-07-12 12:31:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:31:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:31:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:25,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1100 [2022-07-12 12:31:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:25,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2022-07-12 12:31:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:25,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1119 [2022-07-12 12:31:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1130 [2022-07-12 12:31:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 130857 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 130850 trivial. 0 not checked. [2022-07-12 12:31:26,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:31:26,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087208724] [2022-07-12 12:31:26,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087208724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:31:26,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:31:26,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 12:31:26,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129280407] [2022-07-12 12:31:26,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:31:26,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 12:31:26,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:31:26,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 12:31:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:31:26,003 INFO L87 Difference]: Start difference. First operand 3601 states and 4531 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-12 12:31:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:27,240 INFO L93 Difference]: Finished difference Result 11651 states and 14736 transitions. [2022-07-12 12:31:27,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:31:27,241 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 1158 [2022-07-12 12:31:27,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:27,268 INFO L225 Difference]: With dead ends: 11651 [2022-07-12 12:31:27,269 INFO L226 Difference]: Without dead ends: 8082 [2022-07-12 12:31:27,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:31:27,277 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 353 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:27,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1423 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 12:31:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8082 states. [2022-07-12 12:31:27,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8082 to 3676. [2022-07-12 12:31:27,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3571 states have (on average 1.252870344441333) internal successors, (4474), 3571 states have internal predecessors, (4474), 69 states have call successors, (69), 27 states have call predecessors, (69), 35 states have return successors, (90), 77 states have call predecessors, (90), 68 states have call successors, (90) [2022-07-12 12:31:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 4633 transitions. [2022-07-12 12:31:27,736 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 4633 transitions. Word has length 1158 [2022-07-12 12:31:27,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:27,737 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 4633 transitions. [2022-07-12 12:31:27,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-12 12:31:27,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 4633 transitions. [2022-07-12 12:31:27,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1159 [2022-07-12 12:31:27,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:27,751 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 256, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:31:27,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 12:31:27,751 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:27,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash 278713692, now seen corresponding path program 1 times [2022-07-12 12:31:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:31:27,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228844709] [2022-07-12 12:31:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:27,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:31:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:31:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1048 [2022-07-12 12:31:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1054 [2022-07-12 12:31:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2022-07-12 12:31:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2022-07-12 12:31:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:31:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:31:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1100 [2022-07-12 12:31:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1111 [2022-07-12 12:31:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1119 [2022-07-12 12:31:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1130 [2022-07-12 12:31:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:31:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 130857 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 130857 trivial. 0 not checked. [2022-07-12 12:31:56,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:31:56,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228844709] [2022-07-12 12:31:56,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228844709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:31:56,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:31:56,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:31:56,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865964535] [2022-07-12 12:31:56,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:31:56,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:31:56,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:31:56,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:31:56,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:31:56,344 INFO L87 Difference]: Start difference. First operand 3676 states and 4633 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 12:31:56,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:31:56,859 INFO L93 Difference]: Finished difference Result 7357 states and 9290 transitions. [2022-07-12 12:31:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:31:56,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 1158 [2022-07-12 12:31:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:31:56,866 INFO L225 Difference]: With dead ends: 7357 [2022-07-12 12:31:56,867 INFO L226 Difference]: Without dead ends: 3699 [2022-07-12 12:31:56,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:31:56,872 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 79 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:31:56,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 757 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 12:31:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-07-12 12:31:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3677. [2022-07-12 12:31:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3572 states have (on average 1.2527995520716686) internal successors, (4475), 3572 states have internal predecessors, (4475), 69 states have call successors, (69), 27 states have call predecessors, (69), 35 states have return successors, (90), 77 states have call predecessors, (90), 68 states have call successors, (90) [2022-07-12 12:31:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 4634 transitions. [2022-07-12 12:31:57,271 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 4634 transitions. Word has length 1158 [2022-07-12 12:31:57,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:31:57,272 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 4634 transitions. [2022-07-12 12:31:57,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 12:31:57,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 4634 transitions. [2022-07-12 12:31:57,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1160 [2022-07-12 12:31:57,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:31:57,285 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 256, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:31:57,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 12:31:57,286 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:31:57,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:31:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1778210598, now seen corresponding path program 1 times [2022-07-12 12:31:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:31:57,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808041251] [2022-07-12 12:31:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:31:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:32:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:32:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:21,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1049 [2022-07-12 12:32:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:21,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1055 [2022-07-12 12:32:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2022-07-12 12:32:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:21,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1077 [2022-07-12 12:32:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:32:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:21,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:32:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:21,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1101 [2022-07-12 12:32:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:22,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2022-07-12 12:32:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:22,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1120 [2022-07-12 12:32:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:22,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1131 [2022-07-12 12:32:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:32:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 130858 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 130850 trivial. 0 not checked. [2022-07-12 12:32:22,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:32:22,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808041251] [2022-07-12 12:32:22,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808041251] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:32:22,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36753531] [2022-07-12 12:32:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:32:22,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:32:22,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:32:22,116 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:32:22,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process